mcp-plane

mcp server (stdio) exposing the plane rest api as tools so an mcp client can drive plane directly.

Configuration

Set three environment variables:

Variable	Required	Default	Notes
PLANE_API_TOKEN	yes	—	personal access token from plane → settings → api tokens. placeholders like changeme are rejected.
PLANE_WORKSPACE	yes	—	workspace slug (the value in plane urls).
PLANE_BASE_URL	yes	—	self-hosted plane base url, no trailing slash.

Running

The published npm package is the recommended path — no build step, no binary to manage manually:

PLANE_BASE_URL=... PLANE_API_TOKEN=... PLANE_WORKSPACE=... \
  npx -y @c3-oss/mcp-plane

@c3-oss/mcp-plane is a thin JS shim that delegates to the prebuilt Go binary matching your platform (darwin/linux × amd64/arm64), distributed via npm optionalDependencies. No postinstall download.

Or build locally:

just build
PLANE_BASE_URL=... PLANE_API_TOKEN=... PLANE_WORKSPACE=... ./bin/mcp-plane

Either way, the binary speaks JSON-RPC 2.0 over stdio per the MCP specification. Logs go to stderr; stdout is reserved for the protocol.

Registering with an MCP client

Claude Desktop / Claude Code (~/.claude.json), via npx:

{
  "mcpServers": {
    "plane": {
      "command": "npx",
      "args": ["-y", "@c3-oss/mcp-plane"],
      "env": {
        "PLANE_BASE_URL": "https://plane.example.com",
        "PLANE_API_TOKEN": "...",
        "PLANE_WORKSPACE": "..."
      }
    }
  }
}

Or pointing at a locally-built binary:

{
  "mcpServers": {
    "plane": {
      "command": "/abs/path/to/bin/mcp-plane",
      "env": {
        "PLANE_BASE_URL": "https://plane.example.com",
        "PLANE_API_TOKEN": "...",
        "PLANE_WORKSPACE": "..."
      }
    }
  }
}

Tools

23 tools registered. See docs/tools.md for the full table with input schemas; summary below.

Group	Tools
Projects	plane_project_list
Issues	plane_issue_create, plane_issue_list, plane_issue_get, plane_issue_get_by_identifier, plane_issue_update, plane_issue_delete
States / Labels	plane_state_list, plane_label_list
Comments	plane_comment_list, plane_comment_add, plane_comment_update, plane_comment_delete
Activities	plane_activity_list
Attachments	plane_attachment_list, plane_attachment_init_upload, plane_attachment_complete_upload, plane_attachment_upload, plane_attachment_read
Higher-level	plane_issue_transfer, plane_issue_workpad_upsert
Sanity	plane_workspace_info, plane_health

Inputs accept plane-native ids (uuid for project/issue/state/label, or the workspace identifier like PROJ-7 for the by-identifier lookups). plane_project_list returns project ids and identifiers for project-scoped tools.

Verifying

See docs/verifying.md for an end-to-end stdin/stdout probe and a manual smoke test.

Development

Toolchain is pinned via devbox; enter with devbox shell. then:

just build         # compile bin/mcp-plane
just test-race     # full race detector
just lint          # golangci-lint v2
just ci            # local mirror of the PR pipeline
just snapshot      # goreleaser --snapshot (writes dist/ with SBOMs)
just docker-build  # build the local docker image

See AGENTS.md for the canonical project guide.

License

To the extent possible under law, Caian Ertl has waived all copyright and related or neighboring rights to this work. In the spirit of freedom of information, I encourage you to fork, modify, change, share, or do whatever you like with this project! ^C ^V