httprr trace v1 898 3757 POST https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-opus-4-5-20251101-v1%3A0/invoke-with-response-stream HTTP/1.1 Host: bedrock-runtime.us-east-1.amazonaws.com User-Agent: langchaingo-httprr Content-Length: 549 Authorization: AWS4-HMAC-SHA256 test-api-key Content-Type: application/json X-Amzn-Bedrock-Accept: */* {"anthropic_version":"bedrock-2023-05-31","max_tokens":512,"messages":[{"role":"user","content":[{"type":"text","text":"Calculate 15 * 8"}]}],"tools":[{"name":"calculator","description":"A calculator that can perform basic arithmetic operations","input_schema":{"type":"object","properties":{"operation":{"type":"string","description":"The operation to perform","enum":["add","subtract","multiply","divide"]},"a":{"type":"number","description":"First number"},"b":{"type":"number","description":"Second number"}},"required":["operation","a","b"]}}]}HTTP/2.0 200 OK Content-Length: 3526 Content-Type: application/vnd.amazon.eventstream Date: Fri, 23 Jan 2026 13:55:45 GMT X-Amzn-Bedrock-Content-Type: application/json X-Amzn-Requestid: 3b114b7d-74f7-4006-a4dc-8040d2f5943c KxV :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"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","p":"abcdefghijklmn"} T.BKmC :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdGFydCIsImluZGV4IjowLCJjb250ZW50X2Jsb2NrIjp7InR5cGUiOiJ0b29sX3VzZSIsImlkIjoidG9vbHVfYmRya18wMTFnNUdaS0N0RWJDVGdZRHJ6cThkR3EiLCJuYW1lIjoiY2FsY3VsYXRvciIsImlucHV0Ijp7fX19","p":"abcdefghijkl"}3T!Kђ` :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiJ9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXY"}C,1uKUPP6 :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IntcIm9wZXJhdGkifX0=","p":"abcdefghijklmnopqrstuvwx"}B!Kђ` :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6Im9uXCI6IFwibXVsIn19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLM"}9;K&= :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6InRpcGx5XCIifX0=","p":"abcde"}K2",KKAV :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiwgXCJhXCI6IDE1In19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWX"};)K١ :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiwgXCJiXCI6IDh9In19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTU"}{KY :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdG9wIiwiaW5kZXgiOjB9","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWX"},KKAV :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9kZWx0YSIsImRlbHRhIjp7InN0b3BfcmVhc29uIjoidG9vbF91c2UiLCJzdG9wX3NlcXVlbmNlIjpudWxsfSwidXNhZ2UiOnsib3V0cHV0X3Rva2VucyI6ODV9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOP"}3`KB :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9zdG9wIiwiYW1hem9uLWJlZHJvY2staW52b2NhdGlvbk1ldHJpY3MiOnsiaW5wdXRUb2tlbkNvdW50Ijo2MjgsIm91dHB1dFRva2VuQ291bnQiOjg1LCJpbnZvY2F0aW9uTGF0ZW5jeSI6MjA5MSwiZmlyc3RCeXRlTGF0ZW5jeSI6MTQ5NX19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKL"}m1143 685 POST https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-opus-4-5-20251101-v1%3A0/invoke HTTP/1.1 Host: bedrock-runtime.us-east-1.amazonaws.com User-Agent: langchaingo-httprr Content-Length: 830 Accept: */* Authorization: AWS4-HMAC-SHA256 test-api-key Content-Type: application/json {"anthropic_version":"bedrock-2023-05-31","max_tokens":512,"messages":[{"role":"user","content":[{"type":"text","text":"Calculate 15 * 8"}]},{"role":"assistant","content":[{"type":"tool_use","id":"toolu_bdrk_011g5GZKCtEbCTgYDrzq8dGq","name":"calculator","input":{"a":15,"b":8,"operation":"multiply"}}]},{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_bdrk_011g5GZKCtEbCTgYDrzq8dGq","content":"120"}]}],"tools":[{"name":"calculator","description":"A calculator that can perform basic arithmetic operations","input_schema":{"type":"object","properties":{"operation":{"type":"string","description":"The operation to perform","enum":["add","subtract","multiply","divide"]},"a":{"type":"number","description":"First number"},"b":{"type":"number","description":"Second number"}},"required":["operation","a","b"]}}]}HTTP/2.0 200 OK Content-Length: 401 Content-Type: application/json Date: Fri, 23 Jan 2026 13:55:48 GMT X-Amzn-Bedrock-Input-Token-Count: 727 X-Amzn-Bedrock-Invocation-Latency: 1742 X-Amzn-Bedrock-Output-Token-Count: 13 X-Amzn-Requestid: 101d568b-8000-4380-a3b1-5182624f82a9 {"model":"claude-opus-4-5-20251101","id":"msg_bdrk_01398kT2xK59CqL5iz7eXdVB","type":"message","role":"assistant","content":[{"type":"text","text":"15 × 8 = **120**"}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":727,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":0},"output_tokens":13}}899 4306 POST https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-haiku-4-5-20251001-v1%3A0/invoke-with-response-stream HTTP/1.1 Host: bedrock-runtime.us-east-1.amazonaws.com User-Agent: langchaingo-httprr Content-Length: 549 Authorization: AWS4-HMAC-SHA256 test-api-key Content-Type: application/json X-Amzn-Bedrock-Accept: */* {"anthropic_version":"bedrock-2023-05-31","max_tokens":512,"messages":[{"role":"user","content":[{"type":"text","text":"Calculate 15 * 8"}]}],"tools":[{"name":"calculator","description":"A calculator that can perform basic arithmetic operations","input_schema":{"type":"object","properties":{"operation":{"type":"string","description":"The operation to perform","enum":["add","subtract","multiply","divide"]},"a":{"type":"number","description":"First number"},"b":{"type":"number","description":"Second number"}},"required":["operation","a","b"]}}]}HTTP/2.0 200 OK Content-Length: 4075 Content-Type: application/vnd.amazon.eventstream Date: Fri, 23 Jan 2026 13:55:49 GMT X-Amzn-Bedrock-Content-Type: application/json X-Amzn-Requestid: 3900aaaa-dffa-4f91-a8d8-d9c658a087a2 K?,8 :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"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","p":"abcdefghijklm"}R*VK# :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdGFydCIsImluZGV4IjowLCJjb250ZW50X2Jsb2NrIjp7InR5cGUiOiJ0b29sX3VzZSIsImlkIjoidG9vbHVfYmRya18wMVRhYlVTMnZITHhXYnU4dmlrS0ZXN20iLCJuYW1lIjoiY2FsY3VsYXRvciIsImlucHV0Ijp7fX19","p":"abcdefghijklmnopqrstuvwxyzABCDEF"}ae`K :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiJ9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTU"}hi+Ka :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IntcIm9wZXJhdGlvIn19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVW"},KKAV :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6Im5cIjogXCIifX0=","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01"}}Km :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6Im11In19","p":"abcde"}t KX@2G :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6Imx0aXBseVwiIn19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJK"}ֺ2 KPe :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiwgXCJhXCI6IDE1In19","p":"abcdefghijklmnopqrs"} }K  :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiwgXCJiXCI6ICJ9fQ==","p":"abcdefghijklmnopqrstu"}Y@K :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6Ijh9In19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKL"}+9KPY :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdG9wIiwiaW5kZXgiOjB9","p":"abcdefghijklmnopqrstuvwxyzABCDE"},KKAV :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9kZWx0YSIsImRlbHRhIjp7InN0b3BfcmVhc29uIjoidG9vbF91c2UiLCJzdG9wX3NlcXVlbmNlIjpudWxsfSwidXNhZ2UiOnsib3V0cHV0X3Rva2VucyI6ODZ9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOP"} sK :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9zdG9wIiwiYW1hem9uLWJlZHJvY2staW52b2NhdGlvbk1ldHJpY3MiOnsiaW5wdXRUb2tlbkNvdW50Ijo2MjgsIm91dHB1dFRva2VuQ291bnQiOjg2LCJpbnZvY2F0aW9uTGF0ZW5jeSI6NzczLCJmaXJzdEJ5dGVMYXRlbmN5Ijo1ODd9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234"}U=1144 701 POST https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-haiku-4-5-20251001-v1%3A0/invoke HTTP/1.1 Host: bedrock-runtime.us-east-1.amazonaws.com User-Agent: langchaingo-httprr Content-Length: 830 Accept: */* Authorization: AWS4-HMAC-SHA256 test-api-key Content-Type: application/json {"anthropic_version":"bedrock-2023-05-31","max_tokens":512,"messages":[{"role":"user","content":[{"type":"text","text":"Calculate 15 * 8"}]},{"role":"assistant","content":[{"type":"tool_use","id":"toolu_bdrk_01TabUS2vHLxWbu8vikKFW7m","name":"calculator","input":{"a":15,"b":8,"operation":"multiply"}}]},{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_bdrk_01TabUS2vHLxWbu8vikKFW7m","content":"120"}]}],"tools":[{"name":"calculator","description":"A calculator that can perform basic arithmetic operations","input_schema":{"type":"object","properties":{"operation":{"type":"string","description":"The operation to perform","enum":["add","subtract","multiply","divide"]},"a":{"type":"number","description":"First number"},"b":{"type":"number","description":"Second number"}},"required":["operation","a","b"]}}]}HTTP/2.0 200 OK Content-Length: 418 Content-Type: application/json Date: Fri, 23 Jan 2026 13:55:51 GMT X-Amzn-Bedrock-Input-Token-Count: 727 X-Amzn-Bedrock-Invocation-Latency: 651 X-Amzn-Bedrock-Output-Token-Count: 17 X-Amzn-Requestid: 31182cb3-bc92-49f7-be09-8645949b7e67 {"model":"claude-haiku-4-5-20251001","id":"msg_bdrk_01Af21KBSmLHDB4WzAC4cshX","type":"message","role":"assistant","content":[{"type":"text","text":"The result of 15 × 8 is **120**."}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":727,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":0},"output_tokens":17}}900 4509 POST https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-sonnet-4-5-20250929-v1%3A0/invoke-with-response-stream HTTP/1.1 Host: bedrock-runtime.us-east-1.amazonaws.com User-Agent: langchaingo-httprr Content-Length: 549 Authorization: AWS4-HMAC-SHA256 test-api-key Content-Type: application/json X-Amzn-Bedrock-Accept: */* {"anthropic_version":"bedrock-2023-05-31","max_tokens":512,"messages":[{"role":"user","content":[{"type":"text","text":"Calculate 15 * 8"}]}],"tools":[{"name":"calculator","description":"A calculator that can perform basic arithmetic operations","input_schema":{"type":"object","properties":{"operation":{"type":"string","description":"The operation to perform","enum":["add","subtract","multiply","divide"]},"a":{"type":"number","description":"First number"},"b":{"type":"number","description":"Second number"}},"required":["operation","a","b"]}}]}HTTP/2.0 200 OK Content-Length: 4278 Content-Type: application/vnd.amazon.eventstream Date: Fri, 23 Jan 2026 13:55:54 GMT X-Amzn-Bedrock-Content-Type: application/json X-Amzn-Requestid: 03c39c74-191d-4284-8ede-335fb99d917f K#n :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"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","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ012345"}ʔ@K̝ :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdGFydCIsImluZGV4IjowLCJjb250ZW50X2Jsb2NrIjp7InR5cGUiOiJ0b29sX3VzZSIsImlkIjoidG9vbHVfYmRya18wMTZ5bmtwaFNMVjdnc0NSY1d1bWR1enEiLCJuYW1lIjoiY2FsY3VsYXRvciIsImlucHV0Ijp7fX19","p":"abcdefghij"}TK  :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiJ9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFG"}i(K :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IntcIm9wZXJhdGlvIn19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRST"}y]kKUPP6 :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6Im5cIjogIn19","p":"abcdefghijklmnopqrstuvwxyzABCDEF"}3`]K/V :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IlwibXVsdGlwIn19","p":"abcdefghijklmnopqrstuvwxyz"}>_KCX :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6Imx5In19","p":"abcdefgh"}"*K :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IlwiIn19","p":"abcdefghijklmnopqrstuvw"}!Kђ` :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiwgXCJhIn19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTU"}T-Kv!a :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IlwiOiAxNSJ9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ012"}acKOp :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiwgXCJiXCI6IDh9In19","p":"abcdef"}QK :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdG9wIiwiaW5kZXgiOjB9","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHI"}n8KUPP6 :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9kZWx0YSIsImRlbHRhIjp7InN0b3BfcmVhc29uIjoidG9vbF91c2UiLCJzdG9wX3NlcXVlbmNlIjpudWxsfSwidXNhZ2UiOnsib3V0cHV0X3Rva2VucyI6ODV9fQ==","p":"abcdefghijklmnop"}bvMK, :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9zdG9wIiwiYW1hem9uLWJlZHJvY2staW52b2NhdGlvbk1ldHJpY3MiOnsiaW5wdXRUb2tlbkNvdW50Ijo2MjgsIm91dHB1dFRva2VuQ291bnQiOjg1LCJpbnZvY2F0aW9uTGF0ZW5jeSI6MjA4OSwiZmlyc3RCeXRlTGF0ZW5jeSI6MTUzOX19","p":"abcdefghijklmnopqrs"}g~}*1145 703 POST https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-sonnet-4-5-20250929-v1%3A0/invoke HTTP/1.1 Host: bedrock-runtime.us-east-1.amazonaws.com User-Agent: langchaingo-httprr Content-Length: 830 Accept: */* Authorization: AWS4-HMAC-SHA256 test-api-key Content-Type: application/json {"anthropic_version":"bedrock-2023-05-31","max_tokens":512,"messages":[{"role":"user","content":[{"type":"text","text":"Calculate 15 * 8"}]},{"role":"assistant","content":[{"type":"tool_use","id":"toolu_bdrk_016ynkphSLV7gsCRcWumduzq","name":"calculator","input":{"a":15,"b":8,"operation":"multiply"}}]},{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_bdrk_016ynkphSLV7gsCRcWumduzq","content":"120"}]}],"tools":[{"name":"calculator","description":"A calculator that can perform basic arithmetic operations","input_schema":{"type":"object","properties":{"operation":{"type":"string","description":"The operation to perform","enum":["add","subtract","multiply","divide"]},"a":{"type":"number","description":"First number"},"b":{"type":"number","description":"Second number"}},"required":["operation","a","b"]}}]}HTTP/2.0 200 OK Content-Length: 419 Content-Type: application/json Date: Fri, 23 Jan 2026 13:55:57 GMT X-Amzn-Bedrock-Input-Token-Count: 727 X-Amzn-Bedrock-Invocation-Latency: 1659 X-Amzn-Bedrock-Output-Token-Count: 17 X-Amzn-Requestid: 81c125cd-41b2-4655-a0f7-1a17b31f2b7f {"model":"claude-sonnet-4-5-20250929","id":"msg_bdrk_018BJeNoft457JWc4fJdPvHh","type":"message","role":"assistant","content":[{"type":"text","text":"The result of 15 × 8 is **120**."}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":727,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":0},"output_tokens":17}}896 5430 POST https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-opus-4-20250514-v1%3A0/invoke-with-response-stream HTTP/1.1 Host: bedrock-runtime.us-east-1.amazonaws.com User-Agent: langchaingo-httprr Content-Length: 549 Authorization: AWS4-HMAC-SHA256 test-api-key Content-Type: application/json X-Amzn-Bedrock-Accept: */* {"anthropic_version":"bedrock-2023-05-31","max_tokens":512,"messages":[{"role":"user","content":[{"type":"text","text":"Calculate 15 * 8"}]}],"tools":[{"name":"calculator","description":"A calculator that can perform basic arithmetic operations","input_schema":{"type":"object","properties":{"operation":{"type":"string","description":"The operation to perform","enum":["add","subtract","multiply","divide"]},"a":{"type":"number","description":"First number"},"b":{"type":"number","description":"Second number"}},"required":["operation","a","b"]}}]}HTTP/2.0 200 OK Content-Length: 5199 Content-Type: application/vnd.amazon.eventstream Date: Fri, 23 Jan 2026 13:56:01 GMT X-Amzn-Bedrock-Content-Type: application/json X-Amzn-Requestid: 3c0370a3-0428-4959-83cc-f55dac1714bc AKw :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9zdGFydCIsIm1lc3NhZ2UiOnsibW9kZWwiOiJjbGF1ZGUtb3B1cy00LTIwMjUwNTE0IiwiaWQiOiJtc2dfYmRya18wMUo4M0VSYmNiOGFxaU1wTnJQcVRFOUEiLCJ0eXBlIjoibWVzc2FnZSIsInJvbGUiOiJhc3Npc3RhbnQiLCJjb250ZW50IjpbXSwic3RvcF9yZWFzb24iOm51bGwsInN0b3Bfc2VxdWVuY2UiOm51bGwsInVzYWdlIjp7ImlucHV0X3Rva2VucyI6NDQ1LCJjYWNoZV9jcmVhdGlvbl9pbnB1dF90b2tlbnMiOjAsImNhY2hlX3JlYWRfaW5wdXRfdG9rZW5zIjowLCJvdXRwdXRfdG9rZW5zIjo0fX19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456"}fK4ӝ :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdGFydCIsImluZGV4IjowLCJjb250ZW50X2Jsb2NrIjp7InR5cGUiOiJ0ZXh0IiwidGV4dCI6IiJ9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDE"}cKrd :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiJJJ2xsIGNhbGN1bGF0ZSAifX0=","p":"abcdefghijklmnopqrs"}5K\ :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiIxNSAqICJ9fQ==","p":"abcdefghijklmnopqrs"}#K :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiI4IGZvciB5b3UuIn19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ012345678"}S݊Kf :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdG9wIiwiaW5kZXgiOjB9","p":"abcdefghijklmno"}SMK, :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdGFydCIsImluZGV4IjoxLCJjb250ZW50X2Jsb2NrIjp7InR5cGUiOiJ0b29sX3VzZSIsImlkIjoidG9vbHVfYmRya18wMTFaZEZYOFp1d3V1encyQm5paDRYVnMiLCJuYW1lIjoiY2FsY3VsYXRvciIsImlucHV0Ijp7fX19","p":"abcdefghijklmnopqrstuvw"}Dz+K&= :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiJ9fQ==","p":"abcdefghijklm"}RKF :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IntcIm9wZXJhdGkifX0=","p":"abcdefghijklmnopqrstuvwxyzABC"}Р%KFQ4 :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6Im9uXCI6In19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXY"}ŽKKe  :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiBcIm11bCJ9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJ"}#KOp :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6InRpcGx5XCIifX0=","p":"abcdefghij"}y*Kq :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiwgXCJhXCI6IDE1In19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUV"}S2 K :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiwgXCJiIn19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRST"}gvKPH :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IlwiOiA4fSJ9fQ==","p":"abcdefghijklmnopq"}EK0 :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdG9wIiwiaW5kZXgiOjF9","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTU"}KH :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9kZWx0YSIsImRlbHRhIjp7InN0b3BfcmVhc29uIjoidG9vbF91c2UiLCJzdG9wX3NlcXVlbmNlIjpudWxsfSwidXNhZ2UiOnsib3V0cHV0X3Rva2VucyI6OTl9fQ==","p":"abcdefghijklmnopqrstuv"}B.oKTtH :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9zdG9wIiwiYW1hem9uLWJlZHJvY2staW52b2NhdGlvbk1ldHJpY3MiOnsiaW5wdXRUb2tlbkNvdW50Ijo0NDUsIm91dHB1dFRva2VuQ291bnQiOjk5LCJpbnZvY2F0aW9uTGF0ZW5jeSI6NjEwNywiZmlyc3RCeXRlTGF0ZW5jeSI6Mjg5MX19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0"}EE]h1141 599 POST https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-opus-4-20250514-v1%3A0/invoke HTTP/1.1 Host: bedrock-runtime.us-east-1.amazonaws.com User-Agent: langchaingo-httprr Content-Length: 830 Accept: */* Authorization: AWS4-HMAC-SHA256 test-api-key Content-Type: application/json {"anthropic_version":"bedrock-2023-05-31","max_tokens":512,"messages":[{"role":"user","content":[{"type":"text","text":"Calculate 15 * 8"}]},{"role":"assistant","content":[{"type":"tool_use","id":"toolu_bdrk_011ZdFX8Zuwuuzw2Bnih4XVs","name":"calculator","input":{"a":15,"b":8,"operation":"multiply"}}]},{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_bdrk_011ZdFX8Zuwuuzw2Bnih4XVs","content":"120"}]}],"tools":[{"name":"calculator","description":"A calculator that can perform basic arithmetic operations","input_schema":{"type":"object","properties":{"operation":{"type":"string","description":"The operation to perform","enum":["add","subtract","multiply","divide"]},"a":{"type":"number","description":"First number"},"b":{"type":"number","description":"Second number"}},"required":["operation","a","b"]}}]}HTTP/2.0 200 OK Content-Length: 315 Content-Type: application/json Date: Fri, 23 Jan 2026 13:56:07 GMT X-Amzn-Bedrock-Input-Token-Count: 544 X-Amzn-Bedrock-Invocation-Latency: 3164 X-Amzn-Bedrock-Output-Token-Count: 12 X-Amzn-Requestid: 11e83262-5667-44b5-9717-93d44d83a83b {"model":"claude-opus-4-20250514","id":"msg_bdrk_0185QZkGAedts7pxUjdh2YDa","type":"message","role":"assistant","content":[{"type":"text","text":"15 * 8 = 120"}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":544,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":12}}898 5440 POST https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-sonnet-4-20250514-v1%3A0/invoke-with-response-stream HTTP/1.1 Host: bedrock-runtime.us-east-1.amazonaws.com User-Agent: langchaingo-httprr Content-Length: 549 Authorization: AWS4-HMAC-SHA256 test-api-key Content-Type: application/json X-Amzn-Bedrock-Accept: */* {"anthropic_version":"bedrock-2023-05-31","max_tokens":512,"messages":[{"role":"user","content":[{"type":"text","text":"Calculate 15 * 8"}]}],"tools":[{"name":"calculator","description":"A calculator that can perform basic arithmetic operations","input_schema":{"type":"object","properties":{"operation":{"type":"string","description":"The operation to perform","enum":["add","subtract","multiply","divide"]},"a":{"type":"number","description":"First number"},"b":{"type":"number","description":"Second number"}},"required":["operation","a","b"]}}]}HTTP/2.0 200 OK Content-Length: 5209 Content-Type: application/vnd.amazon.eventstream Date: Fri, 23 Jan 2026 13:56:09 GMT X-Amzn-Bedrock-Content-Type: application/json X-Amzn-Requestid: de48f38b-1789-4816-9f57-a98d90f7c8a0 CKַ :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9zdGFydCIsIm1lc3NhZ2UiOnsibW9kZWwiOiJjbGF1ZGUtc29ubmV0LTQtMjAyNTA1MTQiLCJpZCI6Im1zZ19iZHJrXzAxQ0NwREc5QXpyTmo0S3JUY1RORUtoTiIsInR5cGUiOiJtZXNzYWdlIiwicm9sZSI6ImFzc2lzdGFudCIsImNvbnRlbnQiOltdLCJzdG9wX3JlYXNvbiI6bnVsbCwic3RvcF9zZXF1ZW5jZSI6bnVsbCwidXNhZ2UiOnsiaW5wdXRfdG9rZW5zIjo0NDUsImNhY2hlX2NyZWF0aW9uX2lucHV0X3Rva2VucyI6MCwiY2FjaGVfcmVhZF9pbnB1dF90b2tlbnMiOjAsIm91dHB1dF90b2tlbnMiOjV9fX0=","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234"}z=K :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdGFydCIsImluZGV4IjowLCJjb250ZW50X2Jsb2NrIjp7InR5cGUiOiJ0ZXh0IiwidGV4dCI6IiJ9fQ==","p":"ab"}Krd :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiJJJ2xsIGNhbGN1bGF0ZSAxNSJ9fQ==","p":"abcdefghijklmno"}Q]HKH :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiIgKiA4ICJ9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01"}bK :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiJmb3IgeW91LiJ9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ012"}{9K8 :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdG9wIiwiaW5kZXgiOjB9","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0"}OOK[L :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdGFydCIsImluZGV4IjoxLCJjb250ZW50X2Jsb2NrIjp7InR5cGUiOiJ0b29sX3VzZSIsImlkIjoidG9vbHVfYmRya18wMTRGVkN6aHFEVjI2Nks1Q2tUVGtUWHIiLCJuYW1lIjoiY2FsY3VsYXRvciIsImlucHV0Ijp7fX19","p":"abcdefghijklmnopqrstuvwxy"}4|gKPH :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiJ9fQ==","p":"abcdefghijklmnopqrstuvwxy"}Ь3KV :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IntcIm9wZXJhdGlvIn19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234"}K7 :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6Im5cIjoifX0=","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQR"}KOp :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiBcIm11bHRpcGwifX0=","p":"abcdef"}[j)K١ :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6InlcIiJ9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ012"}rK0at :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiwgXCJhXCI6IDE1In19","p":"abcdefghijkl"}@ KPe :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiwgXCJiXCIifX0=","p":"abcdefghijklmnopqrstuvw"})/H*Kq :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IjogOH0ifX0=","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123"}I1K :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdG9wIiwiaW5kZXgiOjF9","p":"abcdefghi"}96#K :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9kZWx0YSIsImRlbHRhIjp7InN0b3BfcmVhc29uIjoidG9vbF91c2UiLCJzdG9wX3NlcXVlbmNlIjpudWxsfSwidXNhZ2UiOnsib3V0cHV0X3Rva2VucyI6OTl9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFG"}36aNKr :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9zdG9wIiwiYW1hem9uLWJlZHJvY2staW52b2NhdGlvbk1ldHJpY3MiOnsiaW5wdXRUb2tlbkNvdW50Ijo0NDUsIm91dHB1dFRva2VuQ291bnQiOjk5LCJpbnZvY2F0aW9uTGF0ZW5jeSI6MTI2NywiZmlyc3RCeXRlTGF0ZW5jeSI6NjU4fX0=","p":"abcdefghijklmnopqrst"}wk1143 601 POST https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-sonnet-4-20250514-v1%3A0/invoke HTTP/1.1 Host: bedrock-runtime.us-east-1.amazonaws.com User-Agent: langchaingo-httprr Content-Length: 830 Accept: */* Authorization: AWS4-HMAC-SHA256 test-api-key Content-Type: application/json {"anthropic_version":"bedrock-2023-05-31","max_tokens":512,"messages":[{"role":"user","content":[{"type":"text","text":"Calculate 15 * 8"}]},{"role":"assistant","content":[{"type":"tool_use","id":"toolu_bdrk_014FVCzhqDV266K5CkTTkTXr","name":"calculator","input":{"a":15,"b":8,"operation":"multiply"}}]},{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_bdrk_014FVCzhqDV266K5CkTTkTXr","content":"120"}]}],"tools":[{"name":"calculator","description":"A calculator that can perform basic arithmetic operations","input_schema":{"type":"object","properties":{"operation":{"type":"string","description":"The operation to perform","enum":["add","subtract","multiply","divide"]},"a":{"type":"number","description":"First number"},"b":{"type":"number","description":"Second number"}},"required":["operation","a","b"]}}]}HTTP/2.0 200 OK Content-Length: 317 Content-Type: application/json Date: Fri, 23 Jan 2026 13:56:12 GMT X-Amzn-Bedrock-Input-Token-Count: 544 X-Amzn-Bedrock-Invocation-Latency: 1631 X-Amzn-Bedrock-Output-Token-Count: 12 X-Amzn-Requestid: bcf91295-d08f-49e5-96b4-80e20d8661a5 {"model":"claude-sonnet-4-20250514","id":"msg_bdrk_017E3A7gpdQwt5sBNN6EuHxt","type":"message","role":"assistant","content":[{"type":"text","text":"15 * 8 = 120"}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":544,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":12}}900 6223 POST https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-3-7-sonnet-20250219-v1%3A0/invoke-with-response-stream HTTP/1.1 Host: bedrock-runtime.us-east-1.amazonaws.com User-Agent: langchaingo-httprr Content-Length: 549 Authorization: AWS4-HMAC-SHA256 test-api-key Content-Type: application/json X-Amzn-Bedrock-Accept: */* {"anthropic_version":"bedrock-2023-05-31","max_tokens":512,"messages":[{"role":"user","content":[{"type":"text","text":"Calculate 15 * 8"}]}],"tools":[{"name":"calculator","description":"A calculator that can perform basic arithmetic operations","input_schema":{"type":"object","properties":{"operation":{"type":"string","description":"The operation to perform","enum":["add","subtract","multiply","divide"]},"a":{"type":"number","description":"First number"},"b":{"type":"number","description":"Second number"}},"required":["operation","a","b"]}}]}HTTP/2.0 200 OK Content-Length: 5992 Content-Type: application/vnd.amazon.eventstream Date: Fri, 23 Jan 2026 13:56:13 GMT X-Amzn-Bedrock-Content-Type: application/json X-Amzn-Requestid: 1db27929-60bd-45d4-921b-cbe71506cbc2 Ka :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9zdGFydCIsIm1lc3NhZ2UiOnsibW9kZWwiOiJjbGF1ZGUtMy03LXNvbm5ldC0yMDI1MDIxOSIsImlkIjoibXNnX2JkcmtfMDFNamhpTlF4Yml3bmN5dHFCSmEzWmUxIiwidHlwZSI6Im1lc3NhZ2UiLCJyb2xlIjoiYXNzaXN0YW50IiwiY29udGVudCI6W10sInN0b3BfcmVhc29uIjpudWxsLCJzdG9wX3NlcXVlbmNlIjpudWxsLCJ1c2FnZSI6eyJpbnB1dF90b2tlbnMiOjQ0NSwiY2FjaGVfY3JlYXRpb25faW5wdXRfdG9rZW5zIjowLCJjYWNoZV9yZWFkX2lucHV0X3Rva2VucyI6MCwib3V0cHV0X3Rva2VucyI6NH19fQ==","p":"abcdefg"}K :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdGFydCIsImluZGV4IjowLCJjb250ZW50X2Jsb2NrIjp7InR5cGUiOiJ0ZXh0IiwidGV4dCI6IiJ9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLM"}GKx> :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiJJJ2xsIGNhbGN1bGF0ZSAifX0=","p":"abc"}}K :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiIxNSDDlyJ9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWX"}N Ky :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiIgOCBmb3IifX0=","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOP"}cmK :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiIgeW91IHVzaW5nIn19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ012"}5FK2 :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiIgdGhlIGNhbGN1bGF0b3IgdG9vbCJ9fQ==","p":"abcdefghijklmn"}epK5Ǵ :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiIuIn19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMN"}wK{& :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdG9wIiwiaW5kZXgiOjB9","p":"abcdef"}]:hK2X :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdGFydCIsImluZGV4IjoxLCJjb250ZW50X2Jsb2NrIjp7InR5cGUiOiJ0b29sX3VzZSIsImlkIjoidG9vbHVfYmRya18wMVE4eTVBOWJYS0xoZFJ5cjNkZkpRMWYiLCJuYW1lIjoiY2FsY3VsYXRvciIsImlucHV0Ijp7fX19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWX"}CKH :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiJ9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOP"}[ Ku :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IntcIm9wZXJhIn19","p":"abcdefghijklmnopqrst"}3K@* :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6InRpb25cIjogXCJtdSJ9fQ==","p":"abcdefghijklmnop"}^2hK  :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6Imx0aXBsIn19","p":"abcdefghijklmnopqrstuvwxyzABC"}ꋮK&= :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6InlcIiJ9fQ==","p":"abcdefghi"} 㾧$K{1 :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiwgXCJhXCIifX0=","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRST"} HK7 :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IjogMTUifX0=","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQR"}N.K1 :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiwgXCJiXCI6IDh9In19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"}GYKs :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdG9wIiwiaW5kZXgiOjF9","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJK"}J1-Kv!a :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9kZWx0YSIsImRlbHRhIjp7InN0b3BfcmVhc29uIjoidG9vbF91c2UiLCJzdG9wX3NlcXVlbmNlIjpudWxsfSwidXNhZ2UiOnsib3V0cHV0X3Rva2VucyI6MTAzfX0=","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQ"}[I:lK :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9zdG9wIiwiYW1hem9uLWJlZHJvY2staW52b2NhdGlvbk1ldHJpY3MiOnsiaW5wdXRUb2tlbkNvdW50Ijo0NDUsIm91dHB1dFRva2VuQ291bnQiOjEwMywiaW52b2NhdGlvbkxhdGVuY3kiOjE2NzYsImZpcnN0Qnl0ZUxhdGVuY3kiOjU2Nn19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWX"} 1145 617 POST https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-3-7-sonnet-20250219-v1%3A0/invoke HTTP/1.1 Host: bedrock-runtime.us-east-1.amazonaws.com User-Agent: langchaingo-httprr Content-Length: 830 Accept: */* Authorization: AWS4-HMAC-SHA256 test-api-key Content-Type: application/json {"anthropic_version":"bedrock-2023-05-31","max_tokens":512,"messages":[{"role":"user","content":[{"type":"text","text":"Calculate 15 * 8"}]},{"role":"assistant","content":[{"type":"tool_use","id":"toolu_bdrk_01Q8y5A9bXKLhdRyr3dfJQ1f","name":"calculator","input":{"a":15,"b":8,"operation":"multiply"}}]},{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_bdrk_01Q8y5A9bXKLhdRyr3dfJQ1f","content":"120"}]}],"tools":[{"name":"calculator","description":"A calculator that can perform basic arithmetic operations","input_schema":{"type":"object","properties":{"operation":{"type":"string","description":"The operation to perform","enum":["add","subtract","multiply","divide"]},"a":{"type":"number","description":"First number"},"b":{"type":"number","description":"Second number"}},"required":["operation","a","b"]}}]}HTTP/2.0 200 OK Content-Length: 334 Content-Type: application/json Date: Fri, 23 Jan 2026 13:56:15 GMT X-Amzn-Bedrock-Input-Token-Count: 543 X-Amzn-Bedrock-Invocation-Latency: 734 X-Amzn-Bedrock-Output-Token-Count: 17 X-Amzn-Requestid: c3a44fa4-dae5-4ac3-a9a0-83eec088b2a7 {"model":"claude-3-7-sonnet-20250219","id":"msg_bdrk_01DKGKY6iNzdXAnD28t1cZDB","type":"message","role":"assistant","content":[{"type":"text","text":"The result of 15 × 8 = 120"}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":543,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":17}}899 5354 POST https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-3-5-haiku-20241022-v1%3A0/invoke-with-response-stream HTTP/1.1 Host: bedrock-runtime.us-east-1.amazonaws.com User-Agent: langchaingo-httprr Content-Length: 549 Authorization: AWS4-HMAC-SHA256 test-api-key Content-Type: application/json X-Amzn-Bedrock-Accept: */* {"anthropic_version":"bedrock-2023-05-31","max_tokens":512,"messages":[{"role":"user","content":[{"type":"text","text":"Calculate 15 * 8"}]}],"tools":[{"name":"calculator","description":"A calculator that can perform basic arithmetic operations","input_schema":{"type":"object","properties":{"operation":{"type":"string","description":"The operation to perform","enum":["add","subtract","multiply","divide"]},"a":{"type":"number","description":"First number"},"b":{"type":"number","description":"Second number"}},"required":["operation","a","b"]}}]}HTTP/2.0 200 OK Content-Length: 5123 Content-Type: application/vnd.amazon.eventstream Date: Fri, 23 Jan 2026 13:56:18 GMT X-Amzn-Bedrock-Content-Type: application/json X-Amzn-Requestid: 8f7ae543-536c-46a1-bef2-3b442575e437 &Ke< :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9zdGFydCIsIm1lc3NhZ2UiOnsibW9kZWwiOiJjbGF1ZGUtMy01LWhhaWt1LTIwMjQxMDIyIiwiaWQiOiJtc2dfYmRya18wMUp0clRMcXg0N1AxS1BSM0RMWmZlZkIiLCJ0eXBlIjoibWVzc2FnZSIsInJvbGUiOiJhc3Npc3RhbnQiLCJjb250ZW50IjpbXSwic3RvcF9yZWFzb24iOm51bGwsInN0b3Bfc2VxdWVuY2UiOm51bGwsInVzYWdlIjp7ImlucHV0X3Rva2VucyI6Mzk2LCJjYWNoZV9jcmVhdGlvbl9pbnB1dF90b2tlbnMiOjAsImNhY2hlX3JlYWRfaW5wdXRfdG9rZW5zIjowLCJvdXRwdXRfdG9rZW5zIjoxfX19","p":"abcdefghijklmnopqrstuvwxyzAB"}k.K :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdGFydCIsImluZGV4IjowLCJjb250ZW50X2Jsb2NrIjp7InR5cGUiOiJ0ZXh0IiwidGV4dCI6IiJ9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01"}/K)) :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiJJIn19","p":"ab"}oKUPP6 :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiInbGwgaGVscCB5b3UgY2FsY3VsYXRlIDE1In19","p":"abcdefghijklmnopqrstuvwx"}E K :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiIgbXVsdGlwbGllZCBieSA4In19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMN"}~L-Kv!a :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjowLCJkZWx0YSI6eyJ0eXBlIjoidGV4dF9kZWx0YSIsInRleHQiOiIgdXNpbmcgdGhlIGNhbGN1bGF0b3IgdG9vbC4ifX0=","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTU"}{KwkH :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdG9wIiwiaW5kZXgiOjB9","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUV"}oUKo :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdGFydCIsImluZGV4IjoxLCJjb250ZW50X2Jsb2NrIjp7InR5cGUiOiJ0b29sX3VzZSIsImlkIjoidG9vbHVfYmRya18wMTFQYkN2Y2hZOFZqUE1DNUpoVVVBZUMiLCJuYW1lIjoiY2FsY3VsYXRvciIsImlucHV0Ijp7fX19","p":"abcdefghijklmnopqrstuvwxyzABCDE"}dcKUPP6 :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiJ9fQ==","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJ"}z͕K4ӝ :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IntcIm9wIn19","p":"abcdefghijk"}VLٟK :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6ImVyYXRpb25cIiJ9fQ==","p":"abcdefghijklmnopqrstuvwxyz"}E5K&" :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IjogXCJtdWx0aXBseVwiIn19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ012"}$TK - :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiwgXCJhXCI6IDE1In19","p":"ab"}/xKh0y :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IiwgIn19","p":"abcdefghijklmnopqrstuvwxyzABCDEFGHIJK"}K4ӝ :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19kZWx0YSIsImluZGV4IjoxLCJkZWx0YSI6eyJ0eXBlIjoiaW5wdXRfanNvbl9kZWx0YSIsInBhcnRpYWxfanNvbiI6IlwiYlwiOiA4fSJ9fQ==","p":"abc"}籩Kf :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoiY29udGVudF9ibG9ja19zdG9wIiwiaW5kZXgiOjF9","p":"abcdefghijklmno"}y'0jK :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9kZWx0YSIsImRlbHRhIjp7InN0b3BfcmVhc29uIjoidG9vbF91c2UiLCJzdG9wX3NlcXVlbmNlIjpudWxsfSwidXNhZ2UiOnsib3V0cHV0X3Rva2VucyI6MTA1fX0=","p":"abcdefghijklmnopqr"}HK'\ :event-typechunk :content-typeapplication/json :message-typeevent{"bytes":"eyJ0eXBlIjoibWVzc2FnZV9zdG9wIiwiYW1hem9uLWJlZHJvY2staW52b2NhdGlvbk1ldHJpY3MiOnsiaW5wdXRUb2tlbkNvdW50IjozOTYsIm91dHB1dFRva2VuQ291bnQiOjEwNSwiaW52b2NhdGlvbkxhdGVuY3kiOjMyNDEsImZpcnN0Qnl0ZUxhdGVuY3kiOjE4ODl9fQ==","p":"abcdefghij"}& 1144 629 POST https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-3-5-haiku-20241022-v1%3A0/invoke HTTP/1.1 Host: bedrock-runtime.us-east-1.amazonaws.com User-Agent: langchaingo-httprr Content-Length: 830 Accept: */* Authorization: AWS4-HMAC-SHA256 test-api-key Content-Type: application/json {"anthropic_version":"bedrock-2023-05-31","max_tokens":512,"messages":[{"role":"user","content":[{"type":"text","text":"Calculate 15 * 8"}]},{"role":"assistant","content":[{"type":"tool_use","id":"toolu_bdrk_011PbCvchY8VjPMC5JhUUAeC","name":"calculator","input":{"a":15,"b":8,"operation":"multiply"}}]},{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_bdrk_011PbCvchY8VjPMC5JhUUAeC","content":"120"}]}],"tools":[{"name":"calculator","description":"A calculator that can perform basic arithmetic operations","input_schema":{"type":"object","properties":{"operation":{"type":"string","description":"The operation to perform","enum":["add","subtract","multiply","divide"]},"a":{"type":"number","description":"First number"},"b":{"type":"number","description":"Second number"}},"required":["operation","a","b"]}}]}HTTP/2.0 200 OK Content-Length: 346 Content-Type: application/json Date: Fri, 23 Jan 2026 13:56:21 GMT X-Amzn-Bedrock-Input-Token-Count: 494 X-Amzn-Bedrock-Invocation-Latency: 895 X-Amzn-Bedrock-Output-Token-Count: 20 X-Amzn-Requestid: 3df50cff-ffc3-40c2-aa7e-6b6d2813796d {"model":"claude-3-5-haiku-20241022","id":"msg_bdrk_018AiTCyTdCNNd6RwrDia86Z","type":"message","role":"assistant","content":[{"type":"text","text":"The result of 15 multiplied by 8 is 120."}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":494,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":20}}