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observer-dashboard — real-time run observability

**Package:** @a5c-ai/babysitter-observer-dashboard · **Version:** 6.0.0 · **Maturity:** GA

**The observer dashboard is a real-time observability UI for Babysitter orchestration runs. It streams run events over SSE and renders task progress, journal events, and orchestration state live in your browser.**

Because every run is event-sourced, the dashboard does not need to poll or guess — it simply consumes the same immutable journal the engine writes, as it is written.

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On this page

• What it is
• How to launch it
• How it works
• Who uses it
• Next steps

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What it is

Per its package description, it is the "real-time observability dashboard for babysitter orchestration runs." It is built on **Next.js** (the v6 announcement cites Next.js 16 / React 19), streams run events via **Server-Sent Events (SSE)**, virtualizes large run histories with @tanstack/react-virtual, and uses the Compendium design system. It renders task progress, journal events, and orchestration state in the browser.

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How to launch it

The dashboard ships a bin and is also launchable from inside a harness:

# In-session (Claude Code and other harnesses):
/babysitter:observe

# Via the genty runtime CLI:
genty observe

The underlying bin is babysitter-observer-dashboard (dist/cli.js). Source lives under packages/observer-dashboard/src/ (app/, components/, lib/, cli.ts).

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How it works

Engine appends events  →  immutable journal (~/.a5c/runs/<runId>/)  →  SSE stream  →  Dashboard

The engine writes journal events as the run progresses; the dashboard subscribes to the stream and renders them. Large histories are virtualized so the UI stays responsive on long-running or high-volume runs.

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Who uses it

Anyone monitoring a live or historical Babysitter run — to watch convergence, see which task is executing, inspect the journal, or debug why a run stopped at a gate.

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Next steps

• **See where it sits:** Architecture & How It Fits Together
• **What it streams:** Journal System
• **Launch it from a harness:** Slash Commands (/babysitter:observe)
• **Ecosystem map:** Ecosystem Overview