Free SKILL.md scraped from GitHub. Clone the repo or copy the file directly into your Claude Code skills directory.
npx versuz@latest install jamie-bitflight-claude-skills-plugins-plugin-creator-skills-claude-session-data-schema-referengit clone https://github.com/Jamie-BitFlight/claude_skills.gitcp claude_skills/SKILL.MD ~/.claude/skills/jamie-bitflight-claude-skills-plugins-plugin-creator-skills-claude-session-data-schema-referen/SKILL.md--- name: claude-session-data-schema-reference description: Claude Code session log schema — JSONL record types, message structure, tool call/result pairing, subagent file locations, team session layout, task/plan/team configuration paths. Use when parsing ~/.claude/projects/**/*.jsonl files, writing PostToolUse hooks that measure response sizes, building session analyzers, or any agent that reads or queries Claude session transcripts. user-invocable: false allowed-tools: Read --- # Claude Code Session Log Schema Reference skill for the JSONL session log format written by Claude Code under `~/.claude/projects/`. All claims in the reference are sourced from direct JSONL file inspection and verified against the LM Assist TypeScript source. No fields are inferred. ## When to Load Load `./references/schema.md` when you need: - Directory structure and project-key encoding rules - Complete record type discriminator (`system`, `user`, `assistant`, `result`, `progress`, `summary`, `file-history-snapshot`) - Field-level schema for each record type - Tool call / tool result pairing algorithm - Subagent and team session file naming conventions - Task, plan, and team configuration paths - Hook integration — how `PostToolUse` `tool_response` maps to `tool_result.content` - What is NOT in the logs (per-tool token costs, streaming events, hook records, per-tool timing) ## Source Schema verified 2026-03-24. Source reference: `./references/schema.md`.