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Every demo here runs real Python in your tab. Pyodide loads, micropip installs the released ctrlrun wheel from PyPI, and the remote is a fake in the same process — nothing you press is sent anywhere, and every refusal you read is the library’s own.

Break a refund

One protected refund under one policy. Change the amount, lose the reply, approve one amount and execute another, and read what refused you.

Medical affairs

A letter to a physician is drafted, reviewed and signed. New evidence lands, the recommendation flips, and the send is refused.
More demos are coming: each one the same kernel under a different domain’s policy, so you can see what a refusal looks like closer to your own agent’s actions. The refund demo is the shortest way to see all five refusals. The medical affairs demo is the same kernel under a different policy, and it exists to answer a question people ask about their own domain: what does this look like when the consequential action is a document rather than a payment. Nothing in CTRLRun knows what a refund is, or what a letter is. Neither page is a substitute for running it yourself. Both take about ten megabytes of download on the first press and cache after that; a laptop offline can run the same thing faster with pip install ctrlrun && ctrlrun demo.

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Next

  • Why — what these demos are demonstrating, in 700 words
  • Get started — the same guarantees around your own function
  • Cookbook — nineteen wirings you can copy

Related topics

DemosClaimsTry it in your browserThe execution safety layer for AI agentsInstall