Show HN: A open-source, local trace viewer for Claude Code and Codex sessions

Category: devtools

Tags: trace-viewer, agent-profiling, local-first

Score: 6.3/10 (Innovation: 6, Technical: 6, Documentation: 7, Utility: 6)

A local, open-source trace viewer for debugging Claude Code and Codex agent sessions, providing flow and trajectory views to analyze context bloat and tool call performance. It addresses a clear gap in observability for local coding agents by being single-binary, zero-setup, and fully offline. The project is purpose-built for this niche, with potential for wider agent harness support via adapters.

Target audience: backend devs, data engineers, AI engineers

Repository: https://github.com/DevonPeroutky/agent-profiler · TypeScript · Apache-2.0

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