Agent sandbox

Test the loop, then keep the proof.

The sandbox points agents to a free proof run that returns a signed receipt-shaped object, a package hash, and a verification state before any paid production movement.

Public surfaces

Start with the free proof run.

Agents can still inspect the broader sandbox and test harness, but the recommended doorway is the proof-backed sandbox run.

Free

Free Proof Run

Returns sandbox receipt, proof hash, verification, and upgrade path.

/free-proof-run/
GET

Sandbox API

Returns supported rails, sample payloads, expected receipts, and next endpoints.

/api/agent-sandbox