SDK · runs in your browser

The seven libraries, composed — plus the agent loop.

A governed agent is cendor-sdk standing on the seven libraries. Run one here and watch them react: core's bus shows every call's tokens & cost, contextkit assembles, tokenguard budgets, guardrails gates the input, acttrace redacts & audits. Same primitives as the seven-libraries playground — here they're driven by one run(). No server, no key (bring your own to go live).

booting the runtime…
This playground is governed by Cendor itself
No serverYour key never leaves the browser$0.25 hard capInjection gate onTamper-evident audit
expand() — byte-identical original
Run the agent with your own key
No server. This page can't see your key — there's nothing to send it to. The agent loop runs in your browser (Pyodide) and calls the provider's official endpoint directly. The key lives in one in-browser variable and is sent only there. Refresh and it's gone. Check the network tab.
Use a scoped, low-limit key — create one →. The Over budget scenario still blocks pre-flight ($0); Happy path / Contains a secret make a real (cheap) call. Anthropic calls send anthropic-dangerous-direct-browser-access: true.