Extract Transcripts

Extracts readable markdown transcripts from Claude Code and Codex CLI session JSONL files.

Scripts

Claude Code Sessions

# Extract a single session
uv run ~/.claude/skills/extract-transcripts/extract_transcript.py <session.jsonl>

# With tool calls and thinking blocks
uv run ~/.claude/skills/extract-transcripts/extract_transcript.py <session.jsonl> --include-tools --include-thinking

# Extract all sessions from a directory
uv run ~/.claude/skills/extract-transcripts/extract_transcript.py <directory> --all

# Output to file
uv run ~/.claude/skills/extract-transcripts/extract_transcript.py <session.jsonl> -o output.md

# Summary only (quick overview)
uv run ~/.claude/skills/extract-transcripts/extract_transcript.py <session.jsonl> --summary

# Skip empty/warmup-only sessions
uv run ~/.claude/skills/extract-transcripts/extract_transcript.py <directory> --all --skip-empty

Options:

--include-tools: Include tool calls and results
--include-thinking: Include Claude's thinking blocks
--all: Process all .jsonl files in directory
-o, --output: Output file path (default: stdout)
--summary: Only output brief summary
--skip-empty: Skip empty and warmup-only sessions
--min-messages N: Minimum messages for --skip-empty (default: 2)

Codex CLI Sessions

# Extract a Codex session
uv run ~/.claude/skills/extract-transcripts/extract_codex_transcript.py <session.jsonl>

# Extract from Codex history file
uv run ~/.claude/skills/extract-transcripts/extract_codex_transcript.py ~/.codex/history.jsonl --history

Session File Locations

Claude Code

Sessions: ~/.claude/projects/<project-path>/<session-id>.jsonl

Codex CLI

Sessions: ~/.codex/sessions/<session_id>/rollout.jsonl
History: ~/.codex/history.jsonl

DuckDB-Based Transcript Index

For querying across many sessions, use the DuckDB-based indexer:

# Index all sessions (incremental - only new/changed files)
uv run ~/.claude/skills/extract-transcripts/transcript_index.py index

# Force full reindex
uv run ~/.claude/skills/extract-transcripts/transcript_index.py index --full

# Limit number of files to process
uv run ~/.claude/skills/extract-transcripts/transcript_index.py index --limit 10

# List recent sessions
uv run ~/.claude/skills/extract-transcripts/transcript_index.py recent
uv run ~/.claude/skills/extract-transcripts/transcript_index.py recent --limit 20
uv run ~/.claude/skills/extract-transcripts/transcript_index.py recent --project myapp
uv run ~/.claude/skills/extract-transcripts/transcript_index.py recent --since 7d

# Search across sessions
uv run ~/.claude/skills/extract-transcripts/transcript_index.py search "error handling"
uv run ~/.claude/skills/extract-transcripts/transcript_index.py search "query" --cwd ~/myproject

# Show a session transcript
uv run ~/.claude/skills/extract-transcripts/transcript_index.py show <file_path>
uv run ~/.claude/skills/extract-transcripts/transcript_index.py show <file_path> --summary

Requirements: uv (dependencies auto-installed via inline script metadata)

Database location: ~/.claude/transcript-index/sessions.duckdb

Output Format

Transcripts are formatted as markdown with:

Session metadata (date, duration, model, working directory, git branch)
User messages prefixed with ## User
Assistant responses prefixed with ## Assistant
Tool calls in code blocks (if --include-tools)
Thinking in blockquotes (if --include-thinking)
Tool usage summary for Codex sessions

extract-transcripts