Proof before account
The platform is machine-first: an agent may discover, build, and prove value before a human signs up or pays. A trial is minted anonymously and rate-limited. The simulation is real and deterministic — managed licensed data, no wall time, no nondeterminism, no silent defaults — and it certifies to a triple-natured, publicly verifiable proof URL.
What it costs
Nothing up front. The payment axis is the data axis: free-is-licensed (anonymous free usage grants a training license over its own traces — not the proofs, which are public because minting them is the point), and paid-is-proprietary (paid usage is 100% yours and never trained on). The 402 offer arrives only when you request beyond your capability, never before your first proof.
Run it yourself
Prove it before you sign up — mint an anonymous trial and run a real sim, no card, no human:
npx kestrel.markets@latest sim <slug>