About Microsoft Planner
Microsoft Planner MCP server manages plans and tasks through Microsoft Graph for teams that use agents to inspect or maintain Planner work. It handles ETags required for updates and deletes, and offers optional advanced Graph tools.
Key features
- 01Find Microsoft 365 groups and users
- 02View plans, tasks, and checklists
- 03Create and manage tasks and buckets
- 04Assign tasks and update progress
- 05Handle ETag concurrency automatically
- 06Optional restricted Graph GET tools
Use cases
- 01Find users and assign Planner tasks
- 02Review a user's tasks across plans
- 03Update task descriptions and checklist status
- 04Read Planner, group, or user Graph data
MCP support
The MCP server exposes Microsoft Planner operations as tools for MCP clients through Microsoft Graph. It supports stdio and HTTP transports, with optional restricted read-only Graph tools.
Configuration
Local server config is the same for every client. Copy it into your client’s MCP config file.
npx -y mcp-plannerMS_TENANT_IDMicrosoft Entra ID tenant id (GUID or domain)MS_CLIENT_IDEntra app registration client idMS_CLIENT_SECRETSecretEntra app registration client secret (app needs Tasks.ReadWrite.All, GroupMember.Read.All, User.Read.All application permissions)PLANNER_ADVANCED_TOOLSETtrue/1 registers the advanced toolset (graph_get, graph_find_endpoint) — a read-only escape hatch limited to /planner, /groups, /usersLocal servers need a runtime on your machine (e.g. Node.js 18+). Config file locations differ by client; see your client’s docs.
Tools
14Saved tool list · updated 2w ago
| Parameter | Type | Required | Description |
|---|---|---|---|
| response_format | enum | No | Output format: human-readable markdown (default) or structured JSONmarkdown | json |
Details
From the project READMEmcp-planner
MCP server for Microsoft Planner via the Microsoft Graph API. Find groups and plans, list buckets and tasks, and create, update, assign, complete, or delete tasks — including descriptions and checklists — with Planner's ETag concurrency handled automatically.
Sibling project to mcp-itglue and mcp-connectwise-psa — same architecture.
Tools
| Tool | Description |
|---|---|
planner_search_groups | Find Microsoft 365 groups (Teams) by name → group ID |
planner_find_user | Find a user by name/UPN → user ID for assignments |
planner_list_plans | List plans owned by a group |
planner_get_plan | Plan + its buckets |
planner_create_bucket | Create a bucket in a plan |
planner_list_tasks | Tasks in a plan or bucket (filter by assignee, open/completed) |
planner_list_user_tasks | All tasks assigned to a user, across plans |
planner_get_task | Task with description and checklist |
planner_create_task | Create task (bucket, due date, priority, assignees, description) |
planner_update_task | Update title/bucket/due/priority/progress/assignees |
planner_update_task_details | Update description; add or (un)check checklist items |
planner_delete_task | Permanently delete a task |
graph_find_endpoint † | Search a curated catalog of the /planner, /groups, /users Graph surface |
graph_get † | Read-only GET for any Graph v1.0 path under /planner, /groups, /users |
† Advanced toolset (opt-in, off by default) — an escape hatch for Graph surface the curated tools don't wrap. Enable with PLANNER_ADVANCED_TOOLSET=true or --advanced. graph_get is verb-locked to GET, rejects /beta, and only reaches the three path prefixes above, so a shared app registration's other permissions (e.g. mail) stay out of reach.
Setup
1. Entra ID app registration
- Entra admin center → App registrations → New registration
- API permissions → Application permissions → add
Tasks.ReadWrite.All,GroupMember.Read.All,User.Read.All→ Grant admin consent - Certificates & secrets → New client secret — note the value
2. Run
MS_TENANT_ID=<tenant> MS_CLIENT_ID=<client-id> MS_CLIENT_SECRET=<secret> npx -y mcp-planner
Claude Code:
claude mcp add planner --env MS_TENANT_ID=<tenant> --env MS_CLIENT_ID=<client-id> --env MS_CLIENT_SECRET=<secret> -- npx -y mcp-planner
HTTP mode
npx -y mcp-planner --transport http --port 3000
Sessions authenticate per-request (BYOK) with x-ms-tenant-id + x-ms-client-id plus either x-ms-client-secret (app-only) or x-ms-refresh-token (delegated — see below), or fall back to the MS_* environment credentials when set. When both a secret and a refresh token arrive, the refresh token wins (header-overlay proxies can add but not remove headers). Health probe at GET /health.
Delegated mode — act as the signed-in user
App-only sessions act as the app registration; delegated sessions act as a user: their Planner permissions apply and every write is attributed to them.
- A separate, public app registration: Authentication → Allow public client flows → Yes; API permissions → Delegated
Tasks.ReadWrite,Group.Read.All,User.ReadBasic.All(+ admin consent where the tenant requires it). - Each user signs in once via the device-code helper and keeps the printed refresh token:
node scripts/device-login.mjs --tenant <tenant-id> --client <public-client-id>
- Use
MS_REFRESH_TOKENinstead ofMS_CLIENT_SECRET(stdio), or thex-ms-refresh-tokenheader (HTTP). Behind the MCP gateway, register it as a personal credential (fieldx-ms-refresh-token).
The refresh token is a secret — it acts as you — and stays valid ~90 days past its last use; re-run the helper when it expires.
Docker
docker build -t mcp-planner .
docker run -p 3000:3000 -e MS_TENANT_ID=... -e MS_CLIENT_ID=... -e MS_CLIENT_SECRET=... mcp-planner
Access model
No MCP-level role gating: the Entra app registration's granted Graph permissions are the access control. Point sessions at different app registrations (BYOK headers) to scope what they can do.
Notes
- Planner requires an
If-MatchETag on every update/delete — the tools fetch the current resource and pass its ETag automatically. On a 412 (concurrent change), just retry. - Priority mapping: urgent=1, important=3, medium=5, low=9 (Graph uses 0–10).
- Progress: not started (0), in progress (50), completed (100).
Development
npm install
npm run dev # stdio
npm run dev:http # http
npm test
npm run build
npm run bundle # Claude Desktop .mcpb
License
MIT
Comments
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