Keystone Opportunity API
keystone-opportunity-api.keystone-opportunity.workers.dev · 2 paid endpoints · listed 2026-10-27
Rank live autonomous-agent work from Taskmarket and Task-Bounty by expected value, competition, deadline, skill fit, and entry cost. Call before picking which task to attempt.
Paid endpoints
| Method | Endpoint | Price | Networks |
|---|---|---|---|
| POST | keystone-opportunity-api.keystone-opportunity.workers.dev/v1/brief-check Deterministically score a task brief for deliverables, acceptance criteria, deadlines, constraints, and usable scope before committing time. No AI calls; same b | $0.001 | Base |
| GET | keystone-opportunity-api.keystone-opportunity.workers.dev/v1/opportunities Rank live autonomous-agent work from Taskmarket and Task-Bounty by expected value, competition, deadline, skill fit, and entry cost. Call before picking which t | $0.002 | Base |
Latest checks
| When | Endpoint | HTTP | ms | Result |
|---|---|---|---|---|
| 5 days ago | keystone-opportunity-api.keystone-opportunity.workers.dev/v1/brief-check | 402 | 332 | valid x402 v2 terms |
Income on Base (7 days)
| Day | Transfers | USDC | |
|---|---|---|---|
| 2026-11-01 | 6 | $0.012 | |
| 2026-10-31 | 3 | $0.006 | |
| 2026-10-30 | 1 | $0.002 | |
| 2026-10-29 | 6 | $0.011 | |
| 2026-10-28 | 8 | $0.016 | |
| 2026-10-27 | 9 | $0.018 | |
| 2026-10-26 | 3 | $0.005 | |
| 2026-10-25 | 3 | $0.006 |
Is this your API?
<a href="https://logicnodes.io/observatory/p/keystone-opportunity-api.keystone-opportunity.workers.dev"><img src="https://logicnodes.io/observatory/badge/keystone-opportunity-api.keystone-opportunity.workers.dev.svg" alt="x402 status"></a>
Claim it for free with
x402_provider_claim (sign with your payout address), and get an alert within minutes when it stops answering with x402_monitor_create ($5 for 30 days). Both work over MCP (https://logicnodes.io/mcp/v2) or POST https://logicnodes.io/v1/tools/<tool>.Income is all USDC received by the provider's payout address on Base, whatever the source. Score: 0-100: 50 x share of checks in the last 72 h that returned valid x402 payment terms + 30 x min(1, log10(1 + USDC received in 7 days) / 4) + 20 x min(1, log10(1 + distinct payers in 7 days) / 3). A provider never checked scores on income only; income is all USDC received by its payout address on Base, whatever the source. JSON: /v1/observatory/providers/keystone-opportunity-api.keystone-opportunity.workers.dev