What problem does it solve? Past coding-agent sessions are scattered across raw stores like ~/.claude/projects, ~/.codex/sessions, and ~/.copilot/session-store.db, which can total gigabytes and are impractical to grep manually. This Skill provides a read-only, incrementally refreshed index over all of them so questions about past work can be answered cheaply and deterministically. ## Core Features & Use Cases - Cross-agent session search: Query sessions from GitHub Copilot CLI, Claude Code, Codex CLI, and opencode with one command, scoped to the current project or across all projects. - Full-text search and transcripts: Use FTS5 search to find sessions mentioning an error or file, then view compact or full transcripts filtered by role, tool, or keyword. - Stats and index health: Aggregate usage by agent, day, project, tool, branch, repo, and model, and inspect or rebuild the index when needed. - Use Case: You hit an ECONNREFUSED error and suspect you solved it before. Run a search across all indexed sessions, find the matching session, and view the compact transcript to recover the fix. ## Quick Start Ask the agent to use agent-log to find which past session touched a specific file or mentioned a specific error message.