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FractalAI Pay-per-Proof

Pay-per-Proof: one post-quantum ML-DSA-65 / Dilithium-3 (NIST FIPS 204) signature over your message/hash, x402-native.

Host	fractalai.net.co
Price	$0.005–$0.05 per call
Network	Base
Paid endpoints listed	11
Calls, last 30 days*	79
Most unique payers on one endpoint (30 days)*	6
Last paid call*	2026-10-18
Tags	post-quantum, ml-dsa-65, signature, c2pa, provenance, kya, agent-identity, ai-agent

* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.

Endpoints

URL	Method	Price
`https://fractalai.net.co/api/x402/sign` Pay-per-Proof: one post-quantum ML-DSA-65 / Dilithium-3 (NIST FIPS 204) signature over your message/hash, x402-native.	POST	$0.02
`https://fractalai.net.co/api/x402/verify-proof` Pay-per-Verify: an agent pays $0.01 to verify a post-quantum (ML-DSA-65 / Dilithium-3 or Dilithium-2, NIST FIPS 204;…	POST	$0.01
`https://fractalai.net.co/api/x402/witness` FractalAI Notary: pay for an independent ML-DSA-65 attestation of an x402 settlement.	POST	$0.005
`https://fractalai.net.co/api/x402/midas-attest` Signed attestation of an Aave V3 position's liquidation risk right now: health factor, debt, collateral, risk tier and…	POST	$0.01
`https://fractalai.net.co/api/x402/attest-decision` Pay-per-Attestation: an AI agent pays to seal its own decision (input hash, output, model, timestamp) in FractalAI's…	POST	$0.05
`https://fractalai.net.co/api/x402/seal-cbom` Pay-per-CBOM-Seal: a drand-timestamped, re-verifiable seal over a CycloneDX CBOM (ECMA-424) cryptographic inventory —…	POST	$0.05
`https://fractalai.net.co/api/x402/attest-training` Pay-per-Training-Provenance: an agent pays to seal the provenance of a dataset or training run — a C2PA-compatible…	POST	$0.05
`https://fractalai.net.co/api/x402/verify-agent` Pay-per-KYA: an agent pays to verify another agent's post-quantum identity + scope credential (Dilithium-2, NIST FIPS…	POST	$0.03
`https://fractalai.net.co/api/x402/seal` Pay-per-Seal: one post-quantum (Dilithium-3) provenance seal + a self-contained ML-DSA-65/Dilithium-3 (NIST FIPS 204)…	POST	$0.05
`https://fractalai.net.co/api/x402/issue-kya` Pay-per-KYA-credential: a post-quantum-signed agent identity + scope credential — a Dilithium-3 (NIST FIPS 204)…	POST	$0.05
`https://fractalai.net.co/api/x402/stablecoin-receipt` Post-quantum ML-DSA-65 receipt for an on-chain LatAm stablecoin transfer	POST	$0.01

Source: x402 Bazaar discovery API (Coinbase CDP) · Licence: Public discovery metadata; descriptions by each provider. Listed in x402 pay-per-call APIs. We list tools; we do not test, rate or endorse them.

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