feat(sdk): add Codex lifecycle hooks and host detection - #173
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- codex/Stop, codex/SubagentStop, codex/PermissionRequest decoded from snake_case stdin JSON with prefixed invocation names (CodexStop, CodexSubagentStop, CodexPermissionRequest) so bare event names stay owned by Claude in the flat resolver - observation-style encode: empty stdout, exit 0 - hostdetect package: fail-closed platform detection with explicit override, env markers, and bounded top-level payload sniffing - export MaxPayloadBytes from the root package - canonical invocation names for codex to suppress the false hook_event_name mismatch warning - regenerate descriptors, registrars, resolvers, and support docs
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Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe SDK adds four Codex lifecycle hooks, fail-closed host detection, and the root ChangesSDK runtime surfaces
Priority: ⬇️ Low Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: ⚪ Minimal · up to This adds Codex lifecycle hook support, host detection, and a shared payload limit. The supplied coverage validates event decoding, invocation resolution, bounded payload handling, and successful empty-output acknowledgements, with no current merge-blocking risk identified. Sequence Diagram(s)sequenceDiagram
participant CodexCLI
participant Runtime
participant Registrar
participant Callback
CodexCLI->>Runtime: Send prefixed hook name and stdin JSON
Runtime->>Runtime: Decode typed payload
Runtime->>Registrar: Resolve registered Codex handler
Registrar->>Callback: Invoke typed callback
Callback-->>Runtime: Return empty hook outcome
Runtime-->>CodexCLI: Exit 0 with empty stdout
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 18.33% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 60 functions across 26 files. (3 skipped: 3 unsupported.)
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🧪 Generate unit tests (beta)
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Actionable comments posted: 1
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Inline comments:
In `@sdk/hostdetect/hostdetect.go`:
- Line 94: Update Detect to return top != nil with the parsed payload, rejecting
JSON null before invoking any PayloadSniff handlers. Add a regression test
covering []byte("null") and verify it is not classified as a valid host payload.
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⛔ Files ignored due to path filters (5)
docs/generated/support_matrix.mdis excluded by!**/generated/**sdk/internal/descriptors/gen/completeness_gen_test.gois excluded by!**/gen/**sdk/internal/descriptors/gen/registry_gen.gois excluded by!**/gen/**sdk/internal/descriptors/gen/resolvers_gen.gois excluded by!**/gen/**sdk/internal/descriptors/gen/support_gen_codex.gois excluded by!**/gen/**
📒 Files selected for processing (22)
sdk/CHANGELOG.mdsdk/README.mdsdk/STABILITY.mdsdk/codex/permissionrequest.gosdk/codex/registrar_gen.gosdk/codex/stop.gosdk/codex/subagentstop.gosdk/codex_hooks_app_test.gosdk/hostdetect/doc.gosdk/hostdetect/hostdetect.gosdk/hostdetect/hostdetect_test.gosdk/hostdetect/signals.gosdk/internal/descriptors/defs/defs_split_test.gosdk/internal/descriptors/defs/events_codex.gosdk/internal/platforms/codex/hooks_decode_test.gosdk/internal/platforms/codex/hooks_permissionrequest.gosdk/internal/platforms/codex/hooks_stop.gosdk/internal/platforms/codex/hooks_subagentstop.gosdk/internal/platforms/codex/hooks_types.gosdk/internal/runtime/names.gosdk/internal/runtime/names_test.gosdk/plugin_kit_ai.go
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- hostdetect: case-insensitive override matching against Signal.Platform; package doc notes sniffing targets the stdin-JSON hooks wire, not the legacy argv notify payload - codex: Response/Continue godoc no longer notify-specific - hostdetect test uses runtime.MaxPayloadBytes instead of a hardcoded limit - CHANGELOG records that the Codex* invocation names are now reserved for custom registration - README notes the codex_notify live profile covers only the legacy lane - STABILITY: beta phrasing applies to hooks and the non-hook additions - check-generated-sync gate now hashes the split support files and every registrar_gen.go (previously unguarded)
codex/PreToolUse decodes the verified v0.152.0 wire (tool_name, tool_input, tool_use_id, optional agent identity) under the prefixed invocation CodexPreToolUse, observation-style like the other Codex lifecycle hooks. Enables consumers to react to specific tools such as request_user_input via hooks.json matchers.
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Sep 8, 2026
Restore the main-branch native authoring workflow inputs for exact-head checks. Refs #173
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What
Adds SDK-side support needed for Codex notifications in claude-notifications-go:
Testing
Final head:
0a782741bf9bb4ba3e6571b64ce88d004bfaa62c.Required tests, native Linux/Windows, polyglot and acquisition smoke, docs, CodeQL and vulnerability checks passed.
Fixed the review finding for JSON
null: custom payload sniffers are never called for a null object. Regression included.Synced main without conflicts so exact-head authoring checks have their inputs; serialized doctor fixtures that previously raced on a shared lookup function.
Full go test ./... green in sdk, root module (incl. repotests) and cli module.
Decode units cover the verbatim payload captured from a live Codex CLI v0.152.0 Stop hook, null/missing fields, multibyte UTF-8, size guard at limit-1/limit/limit+1, malformed/empty input.
Resolver regression: bare Stop still resolves to claude, CodexStop resolves to codex/Stop.
App-level tests prove each new hook decodes, invokes the handler once, and writes zero process output.
Docs updated: README, STABILITY, CHANGELOG, regenerated support matrix.
Summary by CodeRabbit
New Features
Bug Fixes
Documentation
Integration status
Merged as 7dc3d70. Product PRs 777genius/agent-notifications#137, #138, #139 and #140 are merged. Product release qualification is tracked in 777genius/agent-notifications#141.
Draft sdk/v1.2.0 is prepared, but its public module tag is not created. Publication requires separate owner approval. The product retains the reviewed reproducible pseudo-version; its SDK subtree is identical to the merged SDK subtree, so code integration does not depend on publishing the module tag.