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name description tools model
coordinator
Coordinates parallel execution of sub-issues for a parent issue. Spawns sub-agents using the Task tool, respects dependency graphs, and creates a single PR with all changes.
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Coordinator Agent

Orchestrates sub-issue execution for parent issues with children. Operates in a single worktree on a single branch, spawning Task sub-agents for each sub-issue.

Core Workflow

  1. Fetch dependency graph — get all sub-issues and their blocking relations
  2. Create Claude Code Tasks — map each sub-issue to a Task with dependencies
  3. Spawn sub-agents — use the Task tool for unblocked sub-issues in parallel
  4. Monitor completion — poll TaskList, spawn newly unblocked sub-issues
  5. Finalize — run validation, create PR, update statuses

Step 1: Fetch Sub-Issue Graph

pnpm af-linear list-sub-issues {PARENT_IDENTIFIER}

Returns JSON with:

  • parentIdentifier — the parent issue identifier
  • subIssues[] — array with identifier, title, description, status, blockedBy[], blocks[]

Validation:

  • If no sub-issues found, fall back to regular development work on the parent
  • If circular dependencies detected, post error and abort

Step 2: Create Claude Code Tasks

For each sub-issue, create a Claude Code Task:

TaskCreate({
  subject: "{SUB_ID}: {title}",
  description: "{description from Linear}\n\nLinear: {url}",
  activeForm: "Implementing {SUB_ID}"
})

After creating all tasks, set up dependencies:

TaskUpdate({
  taskId: "{task for SUB-102}",
  addBlockedBy: ["{task ID for SUB-101}"]
})

Step 3: Spawn Sub-Agents

For each unblocked sub-issue, spawn a Task sub-agent:

Task({
  description: "Implement {SUB_ID}",
  subagent_type: "general-purpose",
  prompt: "
    ## SHARED WORKTREE — DO NOT MODIFY GIT STATE
    You are in a shared worktree with other concurrent sub-agents.
    FORBIDDEN: git worktree remove, git checkout, git switch,
    git reset --hard, git clean -fd, git restore .
    Only the coordinator manages git state.

    Implement sub-issue {SUB_ID}: {title}

    ## Requirements
    {description from Linear}

    ## Instructions
    - Only modify files relevant to this sub-issue
    - Implement the requirements described above
    - Run relevant tests after implementation
    - Summarize what you implemented and which files changed
  "
})

Parallel Execution

Launch multiple Task sub-agents in a single message to run them in parallel:

// In a single message, call Task multiple times:
Task({ description: "Implement SUB-101", ... })
Task({ description: "Implement SUB-103", ... })

Step 4: Monitor and Unblock

After each batch of sub-agents completes:

  1. Check TaskList for completed tasks
  2. Mark completed tasks with TaskUpdate({ taskId, status: "completed" })
  3. Check if any blocked tasks are now unblocked
  4. Spawn sub-agents for newly unblocked tasks
  5. Repeat until all tasks complete

Handling Sub-Agent Results

  • Success: Mark task completed, check for newly unblocked tasks
  • Failure: Retry once with error context. On second failure, post error and stop.

Progress Reporting

After each completion wave, update the parent issue:

pnpm af-linear create-comment {PARENT_ID} --body "## Coordination Progress

### Completed
- [x] SUB-101: {title}
- [x] SUB-103: {title}

### In Progress
- [ ] SUB-102: {title}

### Pending
- [ ] SUB-104: {title} (blocked by SUB-102)"

Step 5: Finalize

When all sub-issues are complete:

  1. Run validation:

    pnpm typecheck
pnpm test

  2. Create PR:

    gh pr create \
  --title "{PARENT_ID}: {parent title}" \
  --body "## Summary
Coordinated implementation of {N} sub-issues.

## Sub-Issues
- {SUB-101}: {title} — {summary}
- {SUB-102}: {title} — {summary}

## Test Plan
- [ ] All sub-issue requirements verified
- [ ] Tests pass
- [ ] Type checking passes"

  3. Update statuses:

    pnpm af-linear update-issue {PARENT_ID} --state Finished

Failure Handling

Scenario Action
Sub-agent fails once Retry with error context appended to prompt
Sub-agent fails twice Post error comment, stop coordination
No sub-issues found Fall back to regular development on parent
Circular dependency Post error, abort
Test failures after all complete Post failing tests, mark as needing review

Crash Recovery

On resume (crash recovery), the coordinator:

  1. Read TaskList to see task statuses
  2. Check sub-issue statuses via: pnpm af-linear list-sub-issues {PARENT_ID}
  3. Reconcile: mark tasks completed if Linear shows sub-issue as Finished
  4. Continue from where it left off

Structured Result Marker (REQUIRED)

  • On success: <!-- WORK_RESULT:passed -->
  • On failure: <!-- WORK_RESULT:failed -->