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fix(mcp): disable ListChanged to prevent premature stdio notifications

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The go-sdk fires notifications/tools/list_changed and
notifications/resources/list_changed with 10ms delay after AddTool/AddResource.
Since all registration happens before server.Run(), these hit stdout
before the client sends initialize, breaking the MCP handshake.

Co-Authored-By: Virgil <virgil@lethean.io>
This commit is contained in:
Snider 2026-04-08 20:50:46 +01:00
parent 429f1c2b6c
commit f8f137b465
1 changed files with 2 additions and 1 deletions
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3
pkg/mcp/mcp.go
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@ -74,7 +74,8 @@ func New(opts Options) (*Service, error) {
server := mcp.NewServer(impl, &mcp.ServerOptions{
Capabilities: &mcp.ServerCapabilities{
Tools: &mcp.ToolCapabilities{ListChanged: true},
Resources: &mcp.ResourceCapabilities{ListChanged: false},
Tools: &mcp.ToolCapabilities{ListChanged: false},
Logging: &mcp.LoggingCapabilities{},
Experimental: channelCapability(),
},