Headless Oracle — agent-tools.cloud

Reference implementation of environment.market_state in the Verifiable Intent environment.* constraint family. Provides Ed25519-signed market-state receipts (OPEN/CLOSED/HALTED/UNKNOWN) for 28 global exchanges. Autonomous agents gate trade execution on cryptographically verified market state. Composes with environment.wallet_state for multi-venue mandates. Fail-closed: UNKNOWN always means CLOSED.

Quality grade

How grading works

B 69.7 / 100

Availability 40.0 / 40

Endpoint responded (HTTP 200)

Payability 20.0 / 20

✓ Answers a real HTTP 402 challenge
✓ Publishes a /.well-known/x402 descriptor
✓ Payment address on record
✓ Settlement network declared
✓ Price declared

Demand 9.7 / 40

5 distinct payers, 6 USDC transfers in the last 30 days

Owner verified 0.0 / 3

Nobody has claimed this listing yet

Endpoint last checked 11 h ago. On-chain activity last read 12 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass.

Paid endpoints

4 resource(s) advertised by this origin.

GET https://headlessoracle.com/v5/status

Signed market-state receipt for one exchange. Ed25519 signed, 60s TTL.

GET https://headlessoracle.com/v5/batch

Signed market-state receipts for multiple exchanges. Each receipt Ed25519 signed, 60s TTL.

GET https://headlessoracle.com/v5/status/x402

Signed market-state receipt for one exchange. OPEN/CLOSED/HALTED/UNKNOWN - Ed25519 signed, 60s TTL.

POST https://headlessoracle.com/v5/x402/mint

Mint a persistent ho_live_ API key by sending USDC on Base mainnet. Tier builder=99 USDC (50K calls/day), pro=299 USDC (200K calls/day). No signup required.

How to call

cURL · x402-fetch / x402-axios will auto-handle 402

curl -sS -i -X GET https://headlessoracle.com  # expect HTTP 402 Payment Required (about 0.001 USDC/call)

/.well-known/x402.json

https://headlessoracle.com/.well-known/x402

Listed in

Directories this entry was found in.

a2a