agent-harness-reference
Field reference for Claude Code and GitHub Copilot CLI hook contracts. Covers hook locations, events, matchers, payloads, decisions, exit codes, timeouts, plugin roots, and cloud limits with official URLs and versioned probes. Use for harness contract, copilot cli hook behavior, hook payload format, stale plugin root, Errno 2 _dispatch.py, or before changing cross-harness hooks. Do NOT use to run the porting campaign (in the ai-agents repository, use ai-agents-portability-campaign).
- License
- MIT
Pinned to revision acff1d0a1f21, so it is the text this page describes rather than whatever the author pushed since.
Files
- skills/agent-harness-reference/SKILL.md
- skills/agent-harness-reference/references/official-hook-contracts.md
- skills/agent-harness-reference/references/probe-evidence.md
Every link opens the file at its source, pinned to the revision this page describes.