extract-transcripts

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Extract readable transcripts from Claude Code and Codex CLI session JSONL files

9installs
Source0xbigboss/claude-code
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NPX Install

npx skill4agent add 0xbigboss/claude-code extract-transcripts

Tags

Translated version includes tags in frontmatter
transcript-extractionclaude-codecodex-cliduckdb-indexjsonl-processing

SKILL.md Content

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Extract Transcripts

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

Scripts

Claude Code Sessions

bash
# 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

bash
# 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:
bash
# 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