Which version of MCP protocol does Opencode support ? #4283

Open
opened 2026-02-16 17:43:17 -05:00 by yindo · 1 comment
Owner

Originally created by @abda11ah on GitHub (Jan 6, 2026).

Originally assigned to: @thdxr on GitHub.

Question

Hi, I'm trying to develop a small MCP server that can send push notifications to the client (Opencode) without the client requesting them (a bit like SSE notifications).
This is part of the latest versions of the MCP protocol 2025-11-26

I would like to know which version of the protocol is supported so i can specify it. I couldn't find this information anywhere.

Originally created by @abda11ah on GitHub (Jan 6, 2026). Originally assigned to: @thdxr on GitHub. ### Question Hi, I'm trying to develop a small MCP server that can send push notifications to the client (Opencode) without the client requesting them (a bit like SSE notifications). This is part of the latest versions of the MCP protocol 2025-11-26 I would like to know which version of the protocol is supported so i can specify it. I couldn't find this information anywhere.
yindo added the docs label 2026-02-16 17:43:17 -05:00
Author
Owner

@abda11ah commented on GitHub (Jan 6, 2026):

Ok, I launched my MCP server as 2025-11-25 version , i got :

Server's protocol version is not supported: 2025-11-25

Then i launched it again as "2025-06-18" and it worked.

@abda11ah commented on GitHub (Jan 6, 2026): Ok, I launched my MCP server as 2025-11-25 version , i got : `Server's protocol version is not supported: 2025-11-25` Then i launched it again as "2025-06-18" and it worked.
Sign in to join this conversation.
1 Participants
Notifications
Due Date
No due date set.
Dependencies

No dependencies set.

Reference: anomalyco/opencode#4283