Everything to get going.
Docs, the open provider-change feed, the open-source runtime, and answers to the questions engineers ask first.
Docs, the feed, the runtime.
Everything is in the open. Read the docs, follow the provider-change feed, or inspect the runtime that runs on your Mac.
The Apache-2.0 daemon that runs on your Mac, plus install, the JSON CLI, and connector docs - all in the open. Start-to-reconciled in minutes.
The open event feed and CLI for provider changes that move cost, quotas, token accounting, defaults, and deprecations. The engine behind Provider Impact.
How Ottto labels every cost number - local enriched, live telemetry, connectors, and cloud billing - across every coding agent it watches.
The things you're wondering.
QDoes Ottto slow down my coding tools?
No. Ottto is out of your request path - it reads telemetry your tools already emit. Zero added latency, and nothing breaks if Ottto is down.
QCan you see my code or prompts?
Ottto is built around usage, cost, and limit signals - not your source code. You choose what each source shares, and local data stays labeled and under your control.
QMultiple accounts and plans?
Yes - that's the point. A Pro and a Business Codex, two Claude plans, an API key and some credits all reconcile into one deduped picture across every Mac.
QDo I need an API key?
No. Ottto works with subscriptions too - Pro, Max, and the rest. Subscriptions, API and credits, all first-class.
QIs my subscription safe?
Yes. Ottto observes; it never proxies your requests or holds your login, so your subscription is never at risk.
QWhat is free and open source?
You can start free, no credit card. The runtime and provider feed are open source: ottto and ai-provider-watch.
See your real numbers in minutes.
No sales call, no proxy, no slowdown. Install the app, connect your accounts, and watch every agent, machine and credit reconcile into one picture.