// What is an AI harness, and who actually runs the tools?
// Teaching excerpts; see the explanation and boundaries on the episode page.

// A tool request is data
const call = { id: "call_1", name: "runTests" };

// Check permission before execution
let result = { error: "blocked" };
if (call.name === "runTests") {
  if (permissions.tests === true) {
    result = await runTests();
  }
}
await model.next({ call, result });

// Return the result to the model
// Same runTests request, permission off:
{ error: "blocked" }

// Permission on, actual test summary:
{ failed: 1, passed: 0 }