Keystone Opportunity API

Deterministically score a task brief for deliverables, acceptance criteria, deadlines, constraints, and usable scope before committing time. No AI calls; same brief always yields the same score.

Open endpoint ↗

Price per call: $0.001
Chain: Base
Method: POST
Paid calls · 30 days: 8

Call it from code

This API is run by its own provider and paid directly through x402. We list it so you can find it; we don't route or hold the payment.

import { x402Client, wrapFetchWithPayment } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";

const client = new x402Client();
registerExactEvmScheme(client, { signer: agentAccount });

const pay = wrapFetchWithPayment(fetch, client);
const res = await pay("https://keystone-opportunity-api.keystone-opportunity.workers.dev/v1/brief-check", { method: "POST" });
console.log(await res.json());

https://keystone-opportunity-api.keystone-opportunity.workers.dev/v1/brief-check