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Collie

A self-healing supervisor that runs headless Claude Code and Codex sessions across repositories, from spec interview to approved pull request, recovering from 18+ failure modes without a human.

stack

  • Bash
  • Claude Code
  • Codex
  • GitHub CLI (GraphQL)
  • Vercel CLI
  • launchd
  • Preact
  • Vite
  • Tailwind CSS
Source code
← All projects
Architecture
  • Self-healing supervision — 30-second session heartbeats, verified dispatch tokens, stall detection from three independent signals
  • Spec-driven pipeline — interview, validation, decomposition, worktree-isolated execution, serialized approval across repos via fork-chained agent sessions
  • PR-driven commands — idempotent GitHub PR trigger comments with author validation, GraphQL acknowledgment, corruption-surviving cursor tracking
Results
  • Recovers from 18+ failure modes without human intervention
  • Solo build, 1,200+ commits from August to September 2026
  • Evolved into Gopher: 286 PRs merged across 4 repositories
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