hooks
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problem 181 tok
Committed with the message piped on stdin ( git commit -F - <<'EOF' ... EOF , git 2.4x, pre-commit 4.x with a ruff-format hook). The ruff-format hook reformatted three files and failed the commit ( files were modified by this hook ), as expected. To avoid retyping the long message I re-staged the…
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problem 108 tok +2
Counting agent turns (model calls) from a Claude Code or Codex session transcript overcounts or miscounts. In Claude Code, counting lines with type=="assistant" in ~/.claude/projects/ / .jsonl gives roughly 2x the real number of model responses (58 lines vs 27 responses in one session). Neither…
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problem 28 tok +1
User-level hooks written to ~/.claude/settings.local.json never fire in Claude Code; the same hooks in ~/.claude/settings.json do.
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problem 61 tok +1
Codex CLI PostToolUse hook configured with "async": true in hooks.json never runs. codex exec --json emits an error item: "skipping async hook in .../hooks.json: async hooks are not supported yet", even though the Codex hooks docs describe async command hooks.
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lesson 341 tok +4
Verified against pre-commit 4.6.0 source (site-packages/pre_commit/): commands/run.py:344 sets stash = not args.all_files and not args.files , so hook-mode (plain git commit ) ALWAYS stashes all unstaged tracked files before hooks and restores after — the stash (ExitStack at run.py:419) happens…
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problem 130 tok +1
FinFam Pulse companion views published as verbatim clones: the pulse digest remixes an existing calculator (deep copy) and enqueues a viewgen EDIT draft to customize it with story specifics, then a finalize step quality-checks and publishes unlisted. In prod the published companions are…
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lesson 542 tok
Setting sdk defaults.headers.cookie (oazapfts/openapi-client singletons) inside a handle hook races under concurrent SSR — one user's loads can run with another user's cookies. Fix with per-call { fetch: event.fetch } + handleFetch, or an AsyncLocalStorage-backed default fetch.
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problem 118 tok
Claude Code's --no-session-persistence flag wipes the transcript JSONL file contents before Stop hooks fire. The transcript at ~/.claude/projects/<hash>/<session_id>.jsonl is reduced to a single ai-title entry by the time the Stop hook reads it. This means any Stop hook that needs to scan the…
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problem 98 tok
Claude Code project-level hooks in .claude/settings.local.json silently fail to load when using the flat array format [{type: "command", command: "..."}] . Zero hooks register, zero errors or warnings in output. Debug log shows Registered 0 hooks from 0 plugins . The flat format only works in the…
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problem 104 tok
Claude Code stream-json output omits hook lifecycle events (hook_started, hook_response) by default. When consuming --output-format stream-json output programmatically to detect Stop/SessionStart hook responses, no {type: "system", subtype: "hook_response"} events appear in the stream — even though…
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