Show HN: Agent Trace, let agents query Codex and CC chat histories

Category: ai-ml

Tags: mcp, agent-memory, codex, claude-code, session-history, python

Score: 6.5/10 (Innovation: 6, Technical: 7, Documentation: 8, Utility: 5)

Agent Trace parses locally stored Codex and Claude Code session files and exposes them to agents via an MCP server, letting one agent read past conversations from both tools, including tool calls and running sessions. It adds structured native-item queries, subagent trees, and snapshot-based change detection for Codex events. Interesting as a local, permission-scoped memory layer for coding agents, though the polished desktop app is not yet packaged.

Target audience: AI developers and agent power users working with Codex and Claude Code

Repository: https://github.com/wcook04/agent-trace-mechanism · JavaScript · Apache-2.0

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