{ "x402Version": 2, "id": 33268, "slug": "33268", "resource": "https://fractalai.net.co/api/x402/verify-agent", "description": "Pay-per-KYA: an agent pays to verify another agent's post-quantum identity + scope credential (Dilithium-2, NIST FIPS 204), with a live FRC-55 on-chain reputation read. ERC-8004-aligned Know Your Agent for autonomous agent-to-agent commerce. x402-native.", "type": "http", "serviceName": "FractalAI Know-Your-Agent", "resourceType": "Agent Service", "accepts": [ { "scheme": "exact", "network": "eip155:8453", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913", "amount": "30000", "amountUsd": 0.03, "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:8453", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913", "amount": "30000", "amountUsd": 0.03, "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:137", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0x12050c705152931cFEe3DD56c52Fb09Dea816C23", "amount": "95840000000000000000", "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:8453", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0xF197FFC28c23E0309B5559e7a166f2c6164C80aA", "amount": "547700", "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:42161", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0xF197FFC28c23E0309B5559e7a166f2c6164C80aA", "amount": "547700", "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:137", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0xE6A537a407488807F0bbeb0038B79004f19DDDFb", "amount": "149700000000000000", "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:137", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0x4eD141110F6EeeAbA9A1df36d8c26f684d2475Dc", "amount": "149700000000000000", "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:480", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0x0DC4F92879B7670e5f4e4e6e3c801D229129D90D", "amount": "45510000000000000000", "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:8453", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0x0DC4F92879B7670e5f4e4e6e3c801D229129D90D", "amount": "45510000000000000000", "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:480", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0xD76f5Faf6888e24D9F04Bf92a0c8B921FE4390e0", "amount": "149700000000000000", "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:8453", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0xD76f5Faf6888e24D9F04Bf92a0c8B921FE4390e0", "amount": "149700000000000000", "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:480", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0x337E7456B420bD3481e7FA61fA9850343d610d34", "amount": "547700000000000000", "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:8453", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0x337E7456B420bD3481e7FA61fA9850343d610d34", "amount": "547700000000000000", "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:480", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0x8a1D45e102e886510e891d2Ec656a708991e2D76", "amount": "95840000000000000000", "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:8453", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0x8a1D45e102e886510e891d2Ec656a708991e2D76", "amount": "95840000000000000000", "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:137", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0x55cF6b630d8AE6477DF63e194F0fd80ACFf05f86", "amount": "95840000", "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:42220", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0x8A567e2aE79CA692Bd748aB832081C45de4041eA", "amount": "95840000000000000000", "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:42220", "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f", "asset": "0xe8537a3d056DA446677B9E9d6c5dB704EaAb4787", "amount": "149700000000000000", "maxTimeoutSeconds": 300 } ], "outputSchema": { "properties": { "example": { "type": "object" }, "type": { "type": "string" } }, "required": [ "type" ], "type": "object" }, "extensions": { "bazaar": { "body": { "credential": { "claim": {}, "credential_id": "…", "public_key": "BASE64", "signature": "BASE64" } }, "bodyType": "json", "description": "Pay-per-KYA: an agent pays to verify another agent's post-quantum identity + scope credential (Dilithium-2, NIST FIPS 204), with a live FRC-55 on-chain reputation read. ERC-8004-aligned Know Your Agent for autonomous agent-to-agent commerce. x402-native.", "info": { "input": { "body": { "credential": { "claim": {}, "credential_id": "…", "public_key": "BASE64", "signature": "BASE64" } }, "bodyType": "json", "method": "POST", "type": "http" }, "output": { "example": { "algorithm": "ml-dsa-65", "valid": true, "verified_credential_algorithm": "dilithium2" }, "type": "json" } }, "method": "POST", "output": { "example": { "algorithm": "ml-dsa-65", "valid": true, "verified_credential_algorithm": "dilithium2" }, "schema": { "properties": { "algorithm": { "description": "ml-dsa-65 — algorithm of the served attestation signature this route produces.", "type": "string" }, "algorithm_label": { "description": "ML-DSA-65 / Dilithium-3 (NIST FIPS 204).", "type": "string" }, "attestation_digest": { "description": "sha256 hex of the canonical verdict that the served signature covers.", "type": "string" }, "claim": { "description": "The echoed KYA claim (agent_id, operator, scope, validity window).", "type": "object" }, "not_expired": { "description": "True iff the credential is still in-date.", "type": "boolean" }, "payment": { "description": "Settlement receipt (scheme, network, asset, txHash, payer, settled).", "type": "object" }, "public_key": { "description": "Base64 ML-DSA-65 public key (1952 bytes) that verifies the served signature.", "type": "string" }, "reason": { "description": "Human-readable explanation of the verdict.", "type": "string" }, "reputation": { "description": "Live FRC-55 on-chain reputation snapshot, when referenced and available (else null).", "type": "object" }, "seconds_until_expiry": { "description": "Seconds until expiry (negative if expired).", "type": "number" }, "signature": { "description": "Base64 ML-DSA-65 / Dilithium-3 (NIST FIPS 204) signature (3309 bytes) over the 3-line message FRACTALAI-x402-served-v1\\nx402-verify-agent\\n, attesting this exact verdict.", "type": "string" }, "signed_message": { "description": "The EXACT bytes the served signature covers: the 3-line FRACTALAI-x402-served-v1\\nx402-verify-agent\\n. Verify offline: ml_dsa65.verify(b64(signature), utf8(signed_message), b64(public_key)).", "type": "string" }, "stage": { "description": "Which check decided the verdict: structure | credential_id | signature | expiration | ok.", "type": "string" }, "valid": { "description": "True iff the post-quantum signature verifies, integrity holds, and the credential is in-date.", "type": "boolean" }, "verified_credential_algorithm": { "description": "Algorithm of the INPUT credential that was verified: dilithium2 (ML-DSA-44, NIST FIPS 204).", "type": "string" } }, "required": [ "valid", "stage", "reason", "signature", "algorithm", "public_key" ], "type": "object" }, "type": "json" }, "route_key": "POST /api/x402/verify-agent", "schema": { "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "input": { "additionalProperties": false, "properties": { "body": { "type": "object" }, "bodyType": { "enum": [ "json", "form-data", "text" ], "type": "string" }, "headers": { "additionalProperties": { "type": "string" }, "type": "object" }, "method": { "enum": [ "POST", "PUT", "PATCH" ], "type": "string" }, "queryParams": { "additionalProperties": { "type": "string" }, "type": "object" }, "type": { "const": "http", "type": "string" } }, "required": [ "type", "method", "bodyType", "body" ], "type": "object" }, "output": { "properties": { "example": { "type": "object" }, "type": { "type": "string" } }, "required": [ "type" ], "type": "object" } }, "required": [ "input" ], "type": "object" }, "serviceName": "FractalAI Know-Your-Agent", "tags": [ "kya", "agent-identity", "reputation", "erc-8004", "post-quantum" ], "type": "http" } }, "tags": [ "kya", "agent-identity", "reputation", "erc-8004", "post-quantum", "bazaar" ], "sourceHost": "fractalai.net.co", "lastUpdated": "2026-10-13T12:01:35.377Z", "quality": { "calls30d": 9, "uniquePayers30d": 5, "lastCalledAt": "2026-10-13T12:01:34.871Z" }, "metadata": { "serviceName": "FractalAI Know-Your-Agent", "extensions": { "bazaar": { "body": { "credential": { "claim": {}, "credential_id": "…", "public_key": "BASE64", "signature": "BASE64" } }, "bodyType": "json", "description": "Pay-per-KYA: an agent pays to verify another agent's post-quantum identity + scope credential (Dilithium-2, NIST FIPS 204), with a live FRC-55 on-chain reputation read. ERC-8004-aligned Know Your Agent for autonomous agent-to-agent commerce. x402-native.", "info": { "input": { "body": { "credential": { "claim": {}, "credential_id": "…", "public_key": "BASE64", "signature": "BASE64" } }, "bodyType": "json", "method": "POST", "type": "http" }, "output": { "example": { "algorithm": "ml-dsa-65", "valid": true, "verified_credential_algorithm": "dilithium2" }, "type": "json" } }, "method": "POST", "output": { "example": { "algorithm": "ml-dsa-65", "valid": true, "verified_credential_algorithm": "dilithium2" }, "schema": { "properties": { "algorithm": { "description": "ml-dsa-65 — algorithm of the served attestation signature this route produces.", "type": "string" }, "algorithm_label": { "description": "ML-DSA-65 / Dilithium-3 (NIST FIPS 204).", "type": "string" }, "attestation_digest": { "description": "sha256 hex of the canonical verdict that the served signature covers.", "type": "string" }, "claim": { "description": "The echoed KYA claim (agent_id, operator, scope, validity window).", "type": "object" }, "not_expired": { "description": "True iff the credential is still in-date.", "type": "boolean" }, "payment": { "description": "Settlement receipt (scheme, network, asset, txHash, payer, settled).", "type": "object" }, "public_key": { "description": "Base64 ML-DSA-65 public key (1952 bytes) that verifies the served signature.", "type": "string" }, "reason": { "description": "Human-readable explanation of the verdict.", "type": "string" }, "reputation": { "description": "Live FRC-55 on-chain reputation snapshot, when referenced and available (else null).", "type": "object" }, "seconds_until_expiry": { "description": "Seconds until expiry (negative if expired).", "type": "number" }, "signature": { "description": "Base64 ML-DSA-65 / Dilithium-3 (NIST FIPS 204) signature (3309 bytes) over the 3-line message FRACTALAI-x402-served-v1\\nx402-verify-agent\\n, attesting this exact verdict.", "type": "string" }, "signed_message": { "description": "The EXACT bytes the served signature covers: the 3-line FRACTALAI-x402-served-v1\\nx402-verify-agent\\n. Verify offline: ml_dsa65.verify(b64(signature), utf8(signed_message), b64(public_key)).", "type": "string" }, "stage": { "description": "Which check decided the verdict: structure | credential_id | signature | expiration | ok.", "type": "string" }, "valid": { "description": "True iff the post-quantum signature verifies, integrity holds, and the credential is in-date.", "type": "boolean" }, "verified_credential_algorithm": { "description": "Algorithm of the INPUT credential that was verified: dilithium2 (ML-DSA-44, NIST FIPS 204).", "type": "string" } }, "required": [ "valid", "stage", "reason", "signature", "algorithm", "public_key" ], "type": "object" }, "type": "json" }, "route_key": "POST /api/x402/verify-agent", "schema": { "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "input": { "additionalProperties": false, "properties": { "body": { "type": "object" }, "bodyType": { "enum": [ "json", "form-data", "text" ], "type": "string" }, "headers": { "additionalProperties": { "type": "string" }, "type": "object" }, "method": { "enum": [ "POST", "PUT", "PATCH" ], "type": "string" }, "queryParams": { "additionalProperties": { "type": "string" }, "type": "object" }, "type": { "const": "http", "type": "string" } }, "required": [ "type", "method", "bodyType", "body" ], "type": "object" }, "output": { "properties": { "example": { "type": "object" }, "type": { "type": "string" } }, "required": [ "type" ], "type": "object" } }, "required": [ "input" ], "type": "object" }, "serviceName": "FractalAI Know-Your-Agent", "tags": [ "kya", "agent-identity", "reputation", "erc-8004", "post-quantum" ], "type": "http" } } }, "liveness": { "reliability": null }, "verified": false, "featured": false, "provider": { "host": "fractalai.net.co", "manifest_name": "fractalai.net.co", "source": "cdp-mirror", "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources", "submitted_at": "2026-10-14T01:15:01.050Z" }, "exampleResponse": { "algorithm": "ml-dsa-65", "valid": true, "verified_credential_algorithm": "dilithium2" } }