Does this tool support batch conversion?

Yes, you can use the --all flag to process every session file within a directory simultaneously, with options to skip empty or warmup sessions.

Can I see Claude's internal thinking process in the output?

Yes, by using the --include-thinking flag, the extractor will include Claude's thinking blocks as blockquotes in the Markdown file.

What session file formats are supported?

The skill supports .jsonl session files generated by Claude Code and rollout.jsonl/history.jsonl files from Codex CLI.

How do I search through all my past Claude sessions?

You can use the transcript_index.py script to index your sessions into a DuckDB database, allowing for fast keyword searches across all projects.

Claude Transcript Extractor

Name: Claude Transcript Extractor
Author: 0xBigBoss

by0xBigBoss

•

Developer Tools

Converts Claude Code and Codex CLI session logs into clean, searchable Markdown transcripts with advanced indexing capabilities.

This skill provides a robust suite of tools for managing and analyzing Claude Code and Codex CLI session history by parsing raw JSONL log files into readable Markdown. It allows developers to audit AI interactions, including tool calls, internal thinking blocks, and session metadata such as git branches and model usage. With an integrated DuckDB-based indexer, users can perform high-performance searches across thousands of historical sessions, filter by project or date, and generate concise summaries, making it an essential utility for documenting and retrieving past AI-assisted workflows.

Key Features

01Supports extraction of tool calls, execution results, and internal thinking blocks.

02Compatibility with both Claude Code and Codex CLI session file formats.

03Converts raw JSONL session logs into human-readable Markdown transcripts.

04Batch processing capabilities to summarize or convert entire directories of logs.

05Includes a DuckDB-powered indexer for fast, incremental search across session history.

0628 GitHub stars

Use Cases

01Auditing AI-generated code changes and reasoning processes across complex projects.

02Searching for specific past solutions or bug fixes within a massive history of AI interactions.

03Generating clean documentation and reports from collaborative AI pair-programming sessions.

What are Skills?·How to Install

Install with 🐟 Skill.Fish

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

For use in Claude.ai and ChatGPT

Download Skill