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FractalAI PQC Proof Services

https://fractalai.net.co/api/x402/sign
● healthy a2a-agent

Pay-per-call post-quantum proof services for autonomous agents: ML-DSA-65 signatures, decision attestation, provenance seals, CBOM sealing, Know-Your-Agent verification and independent x402 settlement notarization. Every paid response carries an offline-verifiable ML-DSA-65 receipt (3309-byte signature; public key at https://fractalai.net.co/.well-known/jwks.json). ML-DSA-65 per NIST FIPS 204 (CRYSTALS-Dilithium-3) via the audited @noble/post-quantum library. Not a CMVP-validated (FIPS 140-3) module; no government-suite conformance claimed. Pre-pilot, low volume. Transport: plain HTTP+JSON x402 resources (see each skill's x-fractalai.resource); the A2A JSON-RPC message/send method is NOT implemented.

Category
a2a-agent
Chains
base, polygon, arbitrum, eip155:480
Price
$0.0050–$0.5000 USDC

Quality grade

How grading works
C+ 60.0 / 100
Availability 40.0 / 40
Endpoint responded (HTTP 402)
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 0.0 / 40
Payment address on record, not yet queried on-chain
Owner verified 0.0 / 3
Nobody has claimed this listing yet
Endpoint last checked 10 h ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass.

Paid endpoints

13 resource(s) advertised by this origin.

POST https://fractalai.net.co/api/x402/sign
POST https://fractalai.net.co/api/x402/attest-decision
POST https://fractalai.net.co/api/x402/seal
POST https://fractalai.net.co/api/x402/verify-agent
POST https://fractalai.net.co/api/x402/seal-cbom
POST https://fractalai.net.co/api/x402/attest-training
POST https://fractalai.net.co/api/x402/verify-proof
POST https://fractalai.net.co/api/x402/witness
POST https://fractalai.net.co/api/x402/midas-attest
POST https://fractalai.net.co/api/x402/sentinel-credit
POST https://fractalai.net.co/api/x402/stablecoin-receipt

Post-quantum receipt for an independently verified on-chain LatAm stablecoin transfer

POST https://fractalai.net.co/api/x402/issue-kya

Issue a re-verifiable Know-Your-Agent credential signed with ML-DSA-65

POST https://fractalai.net.co/api/x402/supplytrack-review

How to call

cURL · x402-fetch / x402-axios will auto-handle 402
curl -sS -i -X POST https://fractalai.net.co/api/x402/sign  # expect HTTP 402 Payment Required (about 0.005 USDC/call)
/.well-known/x402.json
https://fractalai.net.co/.well-known/x402

Listed in

Directories this entry was found in.

a2a