Denis Mishin f5c5326c72 mcp: respond with jsonrpc error when MCP request is denied (#5694) ... ## Summary Individual MCP method calls may be denied (i.e. via `mcp_tool` criterion) and Pomerium has to respond with MCP protocol error, which is JSON-RPC error message, rather then with HTTP level error which seems to break some MCP clients. ## Related issues Fix https://linear.app/pomerium/issue/ENG-2521/pomerium-does-not-return-an-mcp-error-when-a-tool-call-is-unauthorized ## User Explanation <!-- How would you explain this change to the user? If this change doesn't create any user-facing changes, you can leave this blank. If filled out, add the `docs` label --> ## Checklist - [x] reference any related issues - [x] updated unit tests - [x] add appropriate label (`enhancement`, `bug`, `breaking`, `dependencies`, `ci`) - [x] ready for review		2025-07-08 09:07:26 -06:00
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messages.go	mcp: respond with jsonrpc error when MCP request is denied (#5694)	2025-07-08 09:07:26 -06:00
messages_test.go	mcp: respond with jsonrpc error when MCP request is denied (#5694)	2025-07-08 09:07:26 -06:00