MacOS Copilot Visual Studio Code Agent Mode - sequencialthinking

[deividfortuna]

Describe the bug
Every command that triggers sequencialthinking mcp is returning error.

To Reproduce
Steps to reproduce the behavior:

1. Copilot in Agent mode do any query with #sequentialthinking eg. #sequentialthinking how to create a new react project?

Expected behavior
Think, create a plan and then print out instructions about how to create a new react project.

Logs

GitHub Copilot
2025-05-13 15:53:38.039 [warning] Tool bb7_sequentialthinking failed validation: object has unsupported schema keyword 'minimum'
2025-05-13 15:53:38.039 [warning] Tool bb7_sequentialthinking failed validation: object has unsupported schema keyword 'minimum'
2025-05-13 15:53:38.039 [warning] Tool bb7_sequentialthinking failed validation: object has unsupported schema keyword 'minimum'
2025-05-13 15:53:38.039 [warning] Tool bb7_sequentialthinking failed validation: object has unsupported schema keyword 'minimum'
2025-05-13 15:53:38.447 [info] Request ID for failed request: 93b7029a-bd34-462b-81b4-29b0ac6dac45
2025-05-13 15:53:38.448 [error] Request Failed: 400 Bad Request
2025-05-13 15:53:38.451 [error] Error: Failed to compute args for tool: "bb7_sequentialthinking" (at tsx element Ok > YM > mde > jSe > tS > Cre > rr)

Additional context
This is probably not an issue with the MCP itself since it wasn't changed in a while, but likely something changed with copilot which might require changes in the MCP?

[ennbou]

what is sequentialthinking context ? it's your instructions file ?

[jmythms]

I have the same issue on Windows. Nothing else in context. Noticed that problem started after updating VS Code to v1.100, and persists in v1.100.1.

Version: 1.100.1 (user setup)
Commit: 91fa95bccb027ece6a968589bb1d662fa9c8e170
Date: 2025-05-09T15:43:50.040Z
Electron: 34.5.1
ElectronBuildId: 11369351
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.26100

[deividfortuna]

what is sequentialthinking context ? it's your instructions file ?

I use #sequentialthinking to trigger copilot agent to use the sequentialthinking MCP

[mikr13]

Having same issue after vs code update, think something changed in new one.

[kolodach]

Having the same issue.

[DaveSkender]

I just updated to VS Code v1.100.2 and this specific issue seems to have been resolved.

Failed to compute args for tool: "f1e_sequentialthinking" (at tsx element Ok > YM > mde > jSe > tS > Cre > rr)

UPDATE: I take that back. It works/fails intermittently, but can't explain why and under what circumstances yet.