[PR #64] [MERGED] feat: support StreamableHTTPClientTransport

## 📋 Pull Request Information **Original PR:** https://github.com/langchain-ai/langchainjs-mcp-adapters/pull/64 **Author:** [@leo237](https://github.com/leo237) **Created:** 4/22/2025 **Status:** ✅ Merged **Merged:** 5/13/2025 **Merged by:** [@benjamincburns](https://github.com/benjamincburns) **Base:** `main` ← **Head:** `feature/streamable-http` --- ### 📝 Commits (10+) - [`0ca7648`](https://github.com/langchain-ai/langchainjs-mcp-adapters/commit/0ca764875e973a9048038c641fee55f00a9252ad) Added support for basic streamable http adapter - [`b265abf`](https://github.com/langchain-ai/langchainjs-mcp-adapters/commit/b265abfc104719226ed36a37feea2106b57ae9d2) added tests - [`07ff66b`](https://github.com/langchain-ai/langchainjs-mcp-adapters/commit/07ff66b7b17e50346cdbbadb60415ea96ea2835a) updated example - [`e88ef0c`](https://github.com/langchain-ai/langchainjs-mcp-adapters/commit/e88ef0cdb686bf36af9ee20f96ebab86a733a324) Updated readme - [`05f4b67`](https://github.com/langchain-ai/langchainjs-mcp-adapters/commit/05f4b67484f848976fe2a64685e8a67f616b35f3) fixes formatting issues - [`ee26a0f`](https://github.com/langchain-ai/langchainjs-mcp-adapters/commit/ee26a0f016a0a08eba10314e30f7eab1a46b76ba) Use Streamable HTTP for all URLs first, fallback to SSE - [`c193c20`](https://github.com/langchain-ai/langchainjs-mcp-adapters/commit/c193c209a4107020e2b62dd26f947bedcc01fd3e) partial test rework - [`b33a2de`](https://github.com/langchain-ai/langchainjs-mcp-adapters/commit/b33a2de2aabbc7c617d99a8958c44863d53d4848) fix tests, add example (not working yet) - [`0f42f28`](https://github.com/langchain-ai/langchainjs-mcp-adapters/commit/0f42f289ff3ede513a339203688370f1c47fae86) fixes, add Streaming HTTP example w/ SSE fallback, update REAMDE - [`ce96b23`](https://github.com/langchain-ai/langchainjs-mcp-adapters/commit/ce96b23933174054c989f66f50c23432972fd9db) bump to latest MCP sdk ### 📊 Changes **13 files changed** (+1453 additions, -416 deletions) <details> <summary>View changed files</summary> 📝 `.gitignore` (+2 -1) 📝 `README.md` (+18 -12) 📝 `__tests__/client.basic.test.ts` (+139 -0) 📝 `__tests__/client.comprehensive.test.ts` (+54 -1) 📝 `__tests__/mocks.ts` (+18 -0) ➕ `examples/calculator_server_shttp_sse.ts` (+173 -0) ➕ `examples/calculator_sse_shttp_example.ts` (+204 -0) 📝 `langchain.config.js` (+1 -0) 📝 `package.json` (+3 -1) 📝 `src/client.ts` (+388 -67) 📝 `src/index.ts` (+8 -1) 📝 `src/tools.ts` (+3 -4) 📝 `yarn.lock` (+442 -329) </details> ### 📄 Description ## Description Adds support for Streamable HTTP. Related to https://github.com/langchain-ai/langchainjs-mcp-adapters/issues/59 Fixes # (issue) ## Type of change - [ ] Bug fix (non-breaking change which fixes an issue) - [X] New feature (non-breaking change which adds functionality) - [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected) - [ ] Documentation update - [ ] Refactoring (no functional changes) ## How Has This Been Tested? 1. Tests are added 2. Manually tested with a Streamable HTTP server ## Checklist: - [X] My code follows the style guidelines of this project - [X] I have performed a self-review of my own code - [X] I have commented my code, particularly in hard-to-understand areas - [X] I have made corresponding changes to the documentation - [X] My changes generate no new warnings - [X] I have added tests that prove my fix is effective or that my feature works - [X] New and existing unit tests pass locally with my changes --- <sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>

yindo commented

2026-02-16 08:17:26 -05:00

Owner

📋 Pull Request Information

Original PR: https://github.com/langchain-ai/langchainjs-mcp-adapters/pull/64
Author: @leo237
Created: 4/22/2025
Status: ✅ Merged
Merged: 5/13/2025
Merged by: @benjamincburns

Base: main ← Head: feature/streamable-http

📝 Commits (10+)

0ca7648 Added support for basic streamable http adapter
b265abf added tests
07ff66b updated example
e88ef0c Updated readme
05f4b67 fixes formatting issues
ee26a0f Use Streamable HTTP for all URLs first, fallback to SSE
c193c20 partial test rework
b33a2de fix tests, add example (not working yet)
0f42f28 fixes, add Streaming HTTP example w/ SSE fallback, update REAMDE
ce96b23 bump to latest MCP sdk

📊 Changes

13 files changed (+1453 additions, -416 deletions)

View changed files

📝 .gitignore (+2 -1)
📝 README.md (+18 -12)
📝 __tests__/client.basic.test.ts (+139 -0)
📝 __tests__/client.comprehensive.test.ts (+54 -1)
📝 __tests__/mocks.ts (+18 -0)
➕ examples/calculator_server_shttp_sse.ts (+173 -0)
➕ examples/calculator_sse_shttp_example.ts (+204 -0)
📝 langchain.config.js (+1 -0)
📝 package.json (+3 -1)
📝 src/client.ts (+388 -67)
📝 src/index.ts (+8 -1)
📝 src/tools.ts (+3 -4)
📝 yarn.lock (+442 -329)

📄 Description

Description

Adds support for Streamable HTTP. Related to https://github.com/langchain-ai/langchainjs-mcp-adapters/issues/59

Fixes # (issue)

Type of change

Bug fix (non-breaking change which fixes an issue)
New feature (non-breaking change which adds functionality)
Breaking change (fix or feature that would cause existing functionality to not work as expected)
Documentation update
Refactoring (no functional changes)

How Has This Been Tested?

Tests are added
Manually tested with a Streamable HTTP server

Checklist:

My code follows the style guidelines of this project
I have performed a self-review of my own code
I have commented my code, particularly in hard-to-understand areas
I have made corresponding changes to the documentation
My changes generate no new warnings
I have added tests that prove my fix is effective or that my feature works
New and existing unit tests pass locally with my changes

_{🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.}

yindo added the pull-request label 2026-02-16 08:17:26 -05:00

yindo closed this issue

[PR #64] [MERGED] feat: support StreamableHTTPClientTransport #69