Complete observability for Claude Code — without wrappers, SDKs, or cloud dependencies. Real-time cost tracking, tool latency, and subagent visibility while your session is live.
Claude writes JSONL transcripts, but they're not usable in real time. By the time you notice something's wrong, you've already burned the budget.
Per-model token usage with automatic cost calculation. Watch spending accumulate as your session runs — catch runaway costs before they land on your bill.
Every tool call with execution time, success/failure status, and arguments. p50 and p95 latency breakdown so you know exactly which tools are slow.
Session timeline with subagent tracking and filtering. See the parent-child agent hierarchy, costs per agent, and independent tool activity side by side.
No wrappers. No SDK changes. No cloud. Works entirely via Claude Code hooks — one observagent init command installs everything automatically.
Three commands. No config files. No accounts. No cloud. Just visibility into what your agents are actually doing.
Available on npm. Requires Node.js 18 or later.
Installs relay.py and registers Claude Code hooks automatically in ~/.claude/settings.json.
Run a Claude Code session — the dashboard shows live activity at localhost:4999.
No accounts, no API keys, no telemetry. ObservAgent runs entirely on your machine and never sends data anywhere.