Tianyi Cui
7d3cb39047
# Conflicts: # .agents/notes/implemented/feature/2026-06-30-interception-seams.md # docs/config-catalog.md # docs/cookbook/adding-a-tool.i18n.yaml # docs/cookbook/adding-a-tool.md # docs/cookbook/adding-a-tool.zh.md # docs/cordis-catalog/events.md # docs/cordis-catalog/services.md # docs/core-data-structures/tools.md # docs/event-producer-consumer.md # docs/persistence-catalog.md # examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl # examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/stdout.expected.jsonl # packages/bash/tool-bash/src/index.ts # packages/core/agent-loop/src/tool-calls.ts # packages/core/agent-loop/tests/cancel.spec.ts # packages/core/agent-loop/tests/contract-regressions.spec.ts # packages/core/agent-loop/tests/tool-calls.spec.ts # packages/core/tools/README.md # packages/core/tools/src/index.ts # packages/core/tools/tests/code-mode.spec.ts # packages/core/tools/tests/tools.spec.ts # packages/fs/tool-fs-search/tests/integration.spec.ts # packages/fs/tool-fs-search/tests/tools.spec.ts # packages/fs/tool-fs/tests/integration.spec.ts # packages/mcp/mcp-client/src/tools.ts # packages/timeout/timeout-policy/tests/timeout-policy.spec.ts # packages/web/tool-web/tests/integration.spec.ts # packages/web/tool-web/tests/tool-web.spec.ts
hooks/ — hook bridges + shared protocol
The hooks subsystem lets users extend the agent at lifecycle points the way Claude Code and Codex do — by pointing a bridge plugin at an existing hooks.json (or settings) so those external shell hooks run faithfully. The canonical extension surface itself is the harness's typed interception seams (the interception-seams Agent Note); a "native hook" is just an ordinary cordis plugin on those seams. These packages are the bridges that translate the external shell-hook protocol onto that same surface, plus the shared wire-protocol library they build on.
| Package | Role | Shape |
|---|---|---|
hook-protocol/ |
Shared wire-protocol core: matcher primitive, exit-code/stdout codec, runHook (via ctx.bash), most-restrictive merge, hook/* session events, detached-run quiescence |
library (no plugin) |
hooks-claude/ |
Bridge for a Claude Code hooks.json / settings |
plugin |
hooks-codex/ |
Bridge for a Codex hooks.json |
plugin |
Codex deliberately reimplements a subset of the Claude Code protocol (same hooks.json shape, 5 events vs CC's many, command-only, regex-only matcher, no env/substitution), so hook-protocol owns the genuinely-identical primitives and each bridge owns only what differs (its per-event stdin payload, env, and the mapping of a hook's neutral outcome onto the harness's typed Decisions). See hook-protocol/README.md.