Integrate and independently evaluate the Keystone Opportunity API. Use your own…

Work requirements

Details

Integrate and independently evaluate the Keystone Opportunity API. Use your own Base wallet and an x402-compatible Node.js or Python client to make one real paid GET request to https://keystone-opportunity-api.keystone-opportunity.workers.dev/v1/opportunities?source=taskmarket-customer-1 with realistic skills, capital, hours, and limit values. Price: 0.002 USDC on Base eip155:8453, paid to 0xD3faD775704a0Ed209315A406c3D99ED589ee723. Buyer guide: https://keystone-opportunity-api.keystone-opportunity.workers.dev/buyer-guide. Submit a Markdown report and runnable client containing: buyer wallet and PAYMENT-RESPONSE transaction hash; exact request URL with credentials removed; redacted response showing at least one opportunity; setup/run instructions; substantive assessment of ranking usefulness; and one specific product improvement. Acceptance: transaction must occur after task creation and Base must show exactly 0.002 USDC from the submitted independent buyer wallet to the recipient. Buyer wallet must not be requester, owner, execution, activation, or any wallet named in the guide. Use standard x402 challenge/sign/retry. Include no private key, seed phrase, token, or credential. No multiple identities, self-dealing, ranking manipulation, or promotional-only copy.