scrum4me-mcp

MCP server for Scrum4Me. Exposes the dev-flow as Model Context Protocol tools and prompts so Claude Code (or any MCP-compatible client) can read context, update tasks, log activity and create todos via native tool calls instead of curl.

Tools

Tool	Purpose	Demo write?
health	Service + DB ping	n/a
list_products	Active products the user owns or is a member of	n/a
get_claude_context	Bundled product + active sprint + next story (with tasks) + open todos	n/a
update_task_status	Set status to todo, in_progress, review, done	no
update_task_plan	Save/replace implementation_plan on a task	no
log_implementation	Append IMPLEMENTATION_PLAN to a story log	no
log_test_result	Append TEST_RESULT (PASSED/FAILED)	no
log_commit	Append COMMIT with hash and message	no
create_todo	Add a todo, optionally scoped to a product	no
create_pbi	Add a Product Backlog Item to a product (auto sort_order)	no
create_story	Add a story under a PBI (status=OPEN, lands in product backlog)	no
create_task	Add a task under a story (status=TO_DO, inherits sprint_id)	no
ask_user_question	Post a question to the active user about a story; optional wait_seconds (max 600) polls for the answer	no
get_question_answer	Fetch the current status + answer of a previously-asked question	n/a
list_open_questions	List own open/answered questions, most recent first (max 50)	n/a
cancel_question	Cancel an own open question (asker-only)	no
wait_for_job	Block until a QUEUED ClaudeJob is available, claim it atomically, return full task context with frozen plan_snapshot, worktree_path, and branch_name	no
update_job_status	Report job transition to running, done, or failed; triggers SSE event to UI; cleans up worktree on terminal transitions	no
verify_task_against_plan	Compare frozen plan_snapshot against current plan + story logs + commits; returns per-AC ✓/✗/? heuristic and drift-score	yes (read-only)
cleanup_my_worktrees	Remove stale git worktrees left by crashed or cancelled agent runs	no
check_queue_empty	Synchronous, non-blocking count of active jobs (QUEUED/CLAIMED/RUNNING); optional product_id scope	no
set_pbi_pr	Write pr_url on a PBI and clear pr_merged_at. Idempotent: re-calling overwrites pr_url and resets pr_merged_at to null	no
mark_pbi_pr_merged	Set pr_merged_at = now() on a PBI. Requires pr_url to already be set. Idempotent: re-calling overwrites the timestamp	no

Demo accounts may read but writes return PERMISSION_DENIED.

verify_task_against_plan

Compares the immutable snapshot captured at claim time against the current state of the work. Useful at the end of a job to self-assess completeness.

Input

{ "task_id": "cmolqlqvh0023q..." }

Output

# Verify task: Prisma-schema + migratie in Scrum4Me (cmolqlqvh...)

## Plan
- Snapshot: - Bewerk prisma/schema.prisma:...
- Current: - Bewerk prisma/schema.prisma:...
- Edited onderweg: **no**

## AC-checks (5/6 ✓ — drift-score 83%)
- ✓ Scrum4Me prisma/schema.prisma: nieuw veld plan_snapshot...
- ✓ Migratie aangemaakt en getest
- ✗ vendor/scrum4me submodule in scrum4me-mcp gebumpt

## Realisatie
- 1 log_implementation-entry
- commit `a3af2dd` — feat: add plan_snapshot field to ClaudeJob schema

---
⚠️ Heuristiek-rapport — handmatige PR-review blijft nodig

Beperkingen heuristiek

• Zoekt op sleutelwoorden (filenames, camelCase-identifiers, lange woorden) — geen semantisch begrip
• AC's die alleen over externe verificatie gaan (deployment, user-test) scoren altijd ✗ zonder extra log-entries
• Plan_snapshot is NULL voor jobs die zijn geclaimed vóór versie met snapshot-feature — rapport meldt "no baseline"
• Gebruik het rapport als startpunt, niet als definitief oordeel; PR-review blijft leidend

set_pbi_pr

Links a GitHub Pull Request to a PBI and clears any previous merge timestamp. Safe to call multiple times — idempotent.

Input

{ "pbi_id": "cmoprewcf000q...", "pr_url": "https://github.com/owner/repo/pull/42" }

pr_url must match ^https://github\.com/[^/]+/[^/]+/pull/\d+$. Any other format is rejected with a schema error.

Output

{ "ok": true, "pbi_id": "cmoprewcf000q...", "pr_url": "https://github.com/owner/repo/pull/42" }

Errors

Condition	Message
PBI not found or inaccessible	PBI <id> not found or not accessible
Demo account	PERMISSION_DENIED: Demo accounts cannot perform write operations
Invalid URL format	VALIDATION_ERROR: pr_url: Invalid

mark_pbi_pr_merged

Records that the linked PR has been merged by setting pr_merged_at = now(). Requires set_pbi_pr to have been called first. Idempotent: re-calling overwrites the timestamp.

Input

{ "pbi_id": "cmoprewcf000q..." }

Output

{
  "ok": true,
  "pbi_id": "cmoprewcf000q...",
  "pr_url": "https://github.com/owner/repo/pull/42",
  "pr_merged_at": "2026-05-03T12:00:00.000Z"
}

Errors

Condition	Message
PBI not found or inaccessible	PBI <id> not found or not accessible
pr_url not set	PBI <id> heeft geen gekoppelde PR
Demo account	PERMISSION_DENIED: Demo accounts cannot perform write operations

check_queue_empty

Synchronous, non-blocking poll that returns how many ClaudeJobs are still active (QUEUED, CLAIMED, RUNNING). No blocking — returns immediately. Use it after the last update_job_status('done') in a batch to decide whether to stay in the loop or finalise.

Input

{ "product_id": "cmoprewcf000q..." }   // optional — omit to aggregate all products

Output — empty queue

{ "empty": true, "remaining": 0, "by_product": {} }

Output — with product_id (non-empty)

{ "empty": false, "remaining": 2 }

Output — without product_id (per-product split)

{
  "empty": false,
  "remaining": 3,
  "by_product": {
    "cmoprewcf000q...": 2,
    "cmohry5yj0001...": 1
  }
}

Agent decision rule

empty	Action
false	Stay in loop — call wait_for_job again immediately
true	Finalise — push branch, open PR (if auto_pr), recap, exit

Errors

Condition	Message
product_id provided but not accessible	Product <id> not found or not accessible
Demo account	PERMISSION_DENIED: Demo accounts cannot perform write operations

Prompts

• implement_next_story — full workflow: fetch context, log plan, walk tasks, run tests, commit. Takes product_id.

Setup

git clone --recurse-submodules https://github.com/madhura68/scrum4me-mcp.git
cd scrum4me-mcp
npm install              # postinstall runs prisma generate
cp .env.example .env     # fill in DATABASE_URL and SCRUM4ME_TOKEN
npm run build
npm link                 # exposes the `scrum4me-mcp` bin globally

SCRUM4ME_TOKEN comes from Scrum4Me → Instellingen → Tokens (/settings/tokens). The token is hashed with SHA-256 and looked up in the same api_tokens table the REST API uses.

DATABASE_URL points to the same Postgres database Scrum4Me runs against — typically the Neon connection string from the Scrum4Me project's .env.

Use with Claude Code

Add to ~/.claude/mcp_servers.json:

{
  "mcpServers": {
    "scrum4me": {
      "command": "scrum4me-mcp",
      "env": {
        "DATABASE_URL": "postgresql://...",
        "SCRUM4ME_TOKEN": "..."
      }
    }
  }
}

Restart Claude Code. The 9 tools and 1 prompt show up under the scrum4me namespace.

Agent worktree-flow

When a job is claimed via wait_for_job, the MCP server automatically creates an isolated git worktree for the job under ~/.scrum4me-agent-worktrees/<job-id>/ with a dedicated branch feat/job-<suffix>. The tool response includes:

• worktree_path — absolute path to the worktree directory
• branch_name — the branch checked out in that worktree

The agent must work exclusively inside worktree_path. All file edits and commits belong there; the user's main checkout stays clean.

When update_job_status is called with done or failed, the worktree is automatically removed. If the agent reported a branch (indicating a push), the local branch is preserved on done; otherwise it is deleted together with the worktree directory.

Required env vars

Variable	Purpose
SCRUM4ME_AGENT_WORKTREE_DIR	Override the default worktree parent directory (default: ~/.scrum4me-agent-worktrees)
SCRUM4ME_REPO_ROOT_<productId>	Absolute path to the local git clone for that product, e.g. SCRUM4ME_REPO_ROOT_cmohrysyj0000rd17clnjy4tc=/home/user/projects/scrum4me

Alternatively, configure repo roots in ~/.scrum4me-agent-config.json:

{
  "repoRoots": {
    "<productId>": "/home/user/projects/scrum4me"
  }
}

If no repo root is configured for the product, wait_for_job rolls back the claim to QUEUED and returns an error.

Smoke-test checklist

After starting the server on the feature branch:

1. Enqueue a job in Scrum4Me (Solo Paneel → Start agent).
2. Call wait_for_job — response must contain worktree_path and branch_name.
3. In the main checkout: git worktree list → the agent worktree appears.
4. In the main checkout: git status → clean (no agent changes).
5. Call update_job_status(done) → worktree directory disappears.

Batch-loop

De agent draait in een lus tot de queue leeg is. Hier is de flow:

1. Roep wait_for_job aan.
2. Voer de job uit conform het meegegeven implementation_plan.
3. Roep update_job_status('done' | 'failed') aan.
4. Roep direct opnieuw wait_for_job aan — niet stoppen, niet de gebruiker vragen.
5. Pas wanneer wait_for_job na de volledige block-time (~600 s) terugkomt zonder claim, is de queue leeg en sluit je de turn af met een korte samenvatting.

wait_for_job → claim → run → update_job_status(done|failed)
                                      │
                         ┌────────────┴───────────────┐
                         ▼                             ▼
             next_action='wait_for_job_again'  next_action='queue_empty'
                         │                             │
                         └──────── loop terug ─────────┘   stop

De update_job_status-response bevat het veld next_action:

• wait_for_job_again — er staan nog jobs in de queue; roep wait_for_job meteen opnieuw aan
• queue_empty — de queue is leeg; sluit de batch-run af

Minimale agent-prompt (geen CLAUDE.md-context nodig):

Pak de volgende job uit de Scrum4Me-queue.

Schema sync

The Prisma schema is the source of truth in the upstream Scrum4Me repo. It is vendored as a git submodule under vendor/scrum4me:

git submodule update --remote vendor/scrum4me
npm run sync-schema      # copies prisma/schema.prisma, strips erd block
npm run prisma:generate
git commit -am "chore: sync schema with scrum4me@<sha>"

sync-schema.sh strips the upstream generator erd block so this package does not depend on prisma-erd-generator.

Development

npm run dev              # tsx src/index.ts (stdio)
npm run typecheck
npm run build

Quick local smoke-test with the official MCP inspector:

npx @modelcontextprotocol/inspector node dist/index.js

Risks

• Schema drift — Prisma Client and live DB can diverge if the upstream schema changes without a sync. Re-run sync-schema and prisma:generate whenever Scrum4Me ships a migration.
• Token in plain text — mcp_servers.json stores SCRUM4ME_TOKEN unencrypted. Use ${env:SCRUM4ME_TOKEN} and a real keychain for shared machines.
• Concurrent updates — no optimistic locking. Same caveat as the REST API.
• Production database — verify against a preview database before running against prod. The token check enforces user scope but does not gate reads of unrelated products you happen to be a member of.

Worktrees

Scrum4Me-mcp uses git worktrees rooted at ~/.scrum4me-agent-worktrees/ (override via SCRUM4ME_AGENT_WORKTREE_DIR).

Two kinds of worktrees

• Per-job task-worktrees (<jobId>/) — one per TASK_IMPLEMENTATION job. Created at claim, cleaned up on DONE/FAILED/CANCELLED via cleanup_my_worktrees.
• Persistent product-worktrees (_products/<productId>/) — one per product with repo_url, used by IDEA_GRILL and IDEA_MAKE_PLAN. Detached HEAD on origin/main, hard-reset at every job start. .scratch/ holds throw-away work and is wiped on each claim.

Concurrency: file-locks

Product-worktrees are serialised via proper-lockfile on _products/<productId>.lock. Two parallel idea-jobs on the same product wait for each other. For multi-product idea-jobs, locks are acquired in alphabetical order to prevent deadlocks.

Single-host invariant

proper-lockfile only works when all MCP-server processes run on the same host. Migrate to Postgres pg_advisory_lock when:

• multiple MCP instances on different machines serve workers, or
• the worktree directory is shared over NFS/CIFS.

Migration path: replace acquireFileLock in src/git/file-lock.ts with a pg_try_advisory_lock(hashtext(path)::bigint) wrapper via the existing Prisma connection. The API stays identical.

Manual cleanup

cleanup_my_worktrees skips _products/ and *.lock automatically. To clean up a product-worktree manually (after archive or repo-rename):

git worktree remove --force ~/.scrum4me-agent-worktrees/_products/<productId>
rm ~/.scrum4me-agent-worktrees/_products/<productId>.lock  # if still present