chore(mcp): upgrade mcp client to 1.27.2 (2025-11-25 protocol)#904
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edis-uipath wants to merge 2 commits into
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chore(mcp): upgrade mcp client to 1.27.2 (2025-11-25 protocol)#904edis-uipath wants to merge 2 commits into
edis-uipath wants to merge 2 commits into
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Upgrades the `mcp` SDK from 1.26.0 to the latest stable 1.27.2, whose LATEST_PROTOCOL_VERSION is "2025-11-25". The MCP client negotiates the SDK's latest protocol version on initialize, so this is what lets UiPath MCP servers offer tasks to the agent (prerequisite for suspend-on-UiPath-task). The forked streamable-HTTP transport (which adds UiPath's session-id save/provide layer, needed so a suspended agent resumes onto the same MCP session) is kept as-is: the official client/streamable_http.py is byte-identical between 1.26.0 and 1.27.2, so there is nothing to re-sync, and the official client still offers no way to provide an initial session id through its public entrypoint. Adds a guard test that LATEST_PROTOCOL_VERSION is 2025-11-25, the task result types (CreateTaskResult / GetTaskResult / TaskMetadata) are importable, and Result exposes _meta. Full test suite green (2081 passed). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Pull request overview
Updates the project’s MCP SDK dependency to a tasks-capable protocol baseline by upgrading mcp to 1.27.2 (LATEST protocol 2025-11-25) and adding a small guard test to fail loudly on accidental downgrades.
Changes:
- Bump
mcppin from1.26.0→1.27.2inpyproject.toml. - Regenerate
uv.lockto reflect the new pinned MCP version. - Add a new test module to assert the MCP SDK’s latest protocol version and the presence of task-related types.
Reviewed changes
Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
pyproject.toml |
Pins mcp to 1.27.2 so the SDK negotiates the tasks-capable protocol. |
uv.lock |
Updates the lockfile to match the new MCP pin and resolution metadata. |
tests/agent/tools/test_mcp/test_protocol_version.py |
Adds guard tests for protocol version and SDK surface area (tasks + result metadata). |
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| def test_result_exposes_meta() -> None: | ||
| # The UiPath-job marker rides the result's _meta; the client reads it to detect a UiPath job. | ||
| assert "meta" in Result.model_fields |
Removes tests/agent/tools/test_mcp/test_protocol_version.py. It pinned task-type imports (CreateTaskResult / TaskMetadata) and the 2025-11-25 constant — assumptions the long-running-job design has moved away from: the chosen _meta-based contract doesn't use the SDK task types (which 2.x removes anyway). The version bump stands on the rest of the mcp suite. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Upgrade the MCP client to
mcp==1.27.2(2025-11-25 protocol)Bumps the
mcpSDK from 1.26.0 → 1.27.2 (latest stable), whoseLATEST_PROTOCOL_VERSIONis2025-11-25. The MCP client negotiates the SDK's latest protocol version oninitialize, so this is what lets UiPath MCP servers advertise long-running work to the agent.Why the fork stays
The forked streamable-HTTP transport (
agent/tools/mcp/streamable_http.py) exists to add UiPath's session-id save + provide layer (SessionInfo/SessionInfoFactory), which lets a suspended agent resume onto the same MCP session. We keep it because:client/streamable_http.pyis byte-identical between 1.26.0 and 1.27.2 (git diff --statis empty), so there's nothing to re-sync against this release.streamable_http_client()entrypoint. So the provide-on-resume capability still has to live in our fork.The fork reads the negotiated protocol version from the server's
InitializeResult(it doesn't hardcode one), so the bump alone flips negotiation to2025-11-25— no transport change needed.Changes
pyproject.toml:mcp==1.26.0→mcp==1.27.2;uv.lockregenerated.Testing
tests/agent/tools/test_mcp/— 57 passed.ruff check/ruff formatclean.🤖 Generated with Claude Code