Parameter parsing error: "Cannot destructure property 'workspaceRoot' of 'args.params' as it is undefined"

[rheeger]

Most CircleCI MCP tools fail with this error when using the MCP in Devin. list_followed_projects and config_helper work, but others like get_latest_pipeline_status fail even with correct parameters. This indicates a bug in the MCP server's parameter handling.

Reproduction:

• Connect Circle MCP to Devin
• Use list_followed_projects to get projectSlug.
• Try calling failing tools with projectSlug or workspace params.

Example:

mcp-cli tool call get_latest_pipeline_status --server circleci --input '{"projectSlug": "gh/endaoment/endaoment-backend"}'

[ryan-circleci]

Thanks for the feedback @rheeger! We acknowledge and are currently looking into a solution to address this.

[ryan-circleci]

@rheeger Thanks again for identifying and raising this issue. We have implemented a fix for it.

Feel free to let us know whether or not you notice any better MCP performance at this point.

[blalor]

I'm having this issue, as well, using https://github.com/f/mcptools

[:~] ➜ mcp version
MCP Tools version 0.7.1
[:~] ➜ CIRCLECI_TOKEN=my-circleci-token mcp call get_latest_pipeline_status --format pretty --params '{"projectSlug":"gh/org/repo","branch":"main"}' npx -y @circleci/mcp-server-circleci@0.14.1
{
  "content": [
    {
      "text": "Cannot destructure property 'workspaceRoot' of 'args.params' as it is undefined.",
      "type": "text"
    }
  ],
  "isError": true
}

I get this with @circleci/mcp-server-circleci@latest, as well.

[blalor]

Ok, this works:

[:~] ➜ CIRCLECI_TOKEN=my-circleci-token mcp call get_latest_pipeline_status --format pretty --params '{"params":{"projectSlug":"gh/org/repo","branch":"main"}} npx -y @circleci/mcp-server-circleci@0.14.1
{
  "content": [
    {
      "text": "Cannot destructure property 'workspaceRoot' of 'args.params' as it is undefined.",
      "type": "text"
    }
  ],
  "isError": true
}

Note the params key within the params payload.