●

Rubric Protocol — Post-Quantum AI Attestation

Verification PAYMENT-READY

payment-ready until 2026-08-20

Post-quantum attestation and evidence services for AI agents. Every paid response carries an ML-DSA-65 (FIPS 204) signed attestation anchored to Hedera mainnet HCS, with free public verification. Catalog: pay-per-call decision attestation from $0.005, bulk hash anchoring from $0.000027/record, attested gpt-4o-mini inference binding prompt and response hashes to the exact model version, agent operating-history lookups computed from records that cannot be backdated, independent attestation audits with mirror-node confirmation, attested Hedera network facts from $0.001, and a regulatory-change feed for AI systems. A failed mint is never charged.

Pay from $0.001 to $0.50 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

first settlement 2026-07-25 · $2.95 all-time · settled via coinbase, payAI

BASE URL https://rubric-protocol.com │ WEBSITE https://rubric-protocol.com │ ENDPOINTS 10 │ NETWORK Base │ ASSET USDC │ MEMBER SINCE 2026-07-25 │ MONITORED SINCE 2026-07-25

ASSESSMENT

updated 10m ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 100%

uptime 24h: 100%
uptime 7d: 100%
uptime 30d: 100%
uptime 90d: 100%
response p95: 296ms
avg response: 344ms
total checks: 1,712

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.001 to $0.50 (p5 in Verification)

price (min): $0.001
price (max): $0.50
category percentile (min): p5 in Verification
category percentile (max): p80 in Verification
endpoints / prices: 10 / 9
model: tiered
stability: 100%

risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age: -
registrar: -
hosting: custom
domain created: ---

Identity facts, not a risk score.

traction $2.935 30d · 6 buyers

volume 30d: $2.935
buyers 30d: 6
settlements 30d: 135
first settlement: 2026-07-25
last settlement: 2026-08-13
top buyer share: 68% of 30d volume
trend 7d vs 30d: 0.10x the 30d daily rate
networks: eip155:8453
volume all-time: $2.95
settlements all-time: 135
median settlement 30d: $0.005
max settlement 30d: $0.50
settled via: coinbase ($2.48, 127 tx), payAI ($0.45, 8 tx)

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is a concentration signal, not part of the ranking score.

CHANGES

1 event, detecting since 2026-07-24

Payout, price, and schema changes detected on this service's x402 wire. A payout rotation at an unchanged price shows up here even when nothing else moves. Full feed at /changes.

changes schema changed 16d ago (1 since 2026-07-24)

schema changed · 16d ago

endpoint added GET /v1/x402/agent-record/rubric-assert

endpoint added GET /v1/x402/attested-inference

endpoint added GET /v1/x402/hedera-facts/all

endpoint added GET /v1/x402/hedera-facts/exchange-rate

endpoint added GET /v1/x402/regwatch-feed

endpoint added GET /v1/x402/statement

endpoint added GET /v1/x402/tiered-attest-batch

endpoint added GET /v1/x402/tiered-attest-batch-xl

endpoint added GET /v1/x402/verify-audit

schema added GET /v1/x402/agent-record/rubric-assert exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 2

schema added GET /v1/x402/attested-inference exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 2

schema added GET /v1/x402/hedera-facts/all exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 2

schema added GET /v1/x402/hedera-facts/exchange-rate exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 2

schema added GET /v1/x402/regwatch-feed exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 2

schema added GET /v1/x402/statement exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 2

schema added GET /v1/x402/tiered-attest-batch exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 2

schema added GET /v1/x402/tiered-attest-batch-xl exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 2

schema added GET /v1/x402/verify-audit exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 2

see all changes for this service

WHAT IT DOES

ai-derived

No AI synthesis has been produced for this service yet.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD	PATH	PRICE	NETWORK	ASSET	402 CHANNEL
GET	/v1/x402/agent-record/rubric-assert	$0.005	Base	USDC	header
GET	/v1/x402/attested-inference	$0.01	Base	USDC	header
GET	/v1/x402/hedera-facts/all	$0.003	Base	USDC	header
GET	/v1/x402/hedera-facts/exchange-rate	$0.001	Base	USDC	header
GET	/v1/x402/regwatch-feed	$0.05	Base	USDC	header
GET	/v1/x402/statement	$0.50	Base	USDC	header
POST	/v1/x402/tiered-attest	$0.005	Base	USDC	header
GET	/v1/x402/tiered-attest-batch	$0.035	Base	USDC	header
GET	/v1/x402/tiered-attest-batch-xl	$0.135	Base	USDC	header
GET	/v1/x402/verify-audit	$0.002	Base	USDC	header

10 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /v1/x402/agent-record/rubric-assert returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request

curl -i 'https://rubric-protocol.com/v1/x402/agent-record/rubric-assert'

// 402 response (captured by monitor) · 10 payloads · click to expand

[
  {
    "error": "PAYMENT-SIGNATURE header is required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
        "amount": "5000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://rubric-protocol.com/v1/x402/tiered-attest",
      "mimeType": "application/json",
      "description": "Tamper-evident audit log record for an AI agent decision: signed compliance evidence anchored to public consensus for independent verification. Post-quantum ML-DSA-65 (FIPS 204) signature, Hedera mainnet HCS anchor, free public verification — for agent action provenance, audit trails, and AI governance evidence."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "data": "object (optional) — attested content",
              "agentId": "string (optional)"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "paid": "boolean",
              "topic": "string",
              "settled": "boolean",
              "success": "boolean",
              "algorithm": "ML-DSA-65",
              "verifyUrl": "string — free public verification",
              "attestationId": "string"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "properties": {
                    "data": {
                      "type": "object",
                      "description": "Content to attest"
                    },
                    "agentId": {
                      "type": "string",
                      "description": "Caller-supplied agent identifier"
                    }
                  }
                },
                "type": {
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ]
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ]
                }
              }
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                }
              }
            }
          }
        },
        "discoverable": true
      }
    },
    "x402Version": 2,
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "data": "object (optional) — attested content",
          "agentId": "string (optional)"
        }
      },
      "output": {
        "paid": "boolean",
        "topic": "string",
        "settled": "boolean",
        "success": "boolean",
        "algorithm": "ML-DSA-65",
        "verifyUrl": "string — free public verification",
        "attestationId": "string"
      }
    }
  },
  {
    "error": "Payment required: POST with PAYMENT-SIGNATURE header",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
        "amount": "35000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://rubric-protocol.com/v1/x402/tiered-attest-batch",
      "mimeType": "application/json",
      "description": "Batch attestation for AI agent decision streams: up to 1000 leaves under one post-quantum ML-DSA-65 (FIPS 204) signed Merkle root, anchored to Hedera mainnet HCS. Per-leaf attestation IDs with free public verification. $0.035 per batch — tamper-evident audit trails at agentic-telemetry scale."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "leaves": "array of {data: object} — up to 1000 items to attest",
              "agentId": "string (optional)"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "paid": "boolean",
              "topic": "string",
              "batchId": "string",
              "settled": "boolean",
              "success": "boolean",
              "accepted": "number",
              "algorithm": "ML-DSA-65",
              "attestationIds": "string[] — one per leaf",
              "paymentReceipt": "object — per-leaf dataHash + payment stamp; opens the commitment sealed in each record",
              "verifyUrlPattern": "string"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "properties": {
                    "leaves": {
                      "type": "array",
                      "items": {
                        "type": "object"
                      },
                      "maxItems": 1000,
                      "description": "Items to attest; each becomes a Merkle leaf with its own attestation ID"
                    },
                    "agentId": {
                      "type": "string",
                      "description": "Caller-supplied agent identifier"
                    }
                  }
                },
                "type": {
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ]
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ]
                }
              }
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                }
              }
            }
          }
        },
        "discoverable": true
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required: POST with PAYMENT-SIGNATURE header",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
        "amount": "135000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://rubric-protocol.com/v1/x402/tiered-attest-batch-xl",
      "mimeType": "application/json",
      "description": "Batch attestation for AI agent decision streams: up to 5000 leaves under one post-quantum ML-DSA-65 (FIPS 204) signed Merkle root, anchored to Hedera mainnet HCS. Per-leaf attestation IDs with free public verification. $0.135 per batch — tamper-evident audit trails at agentic-telemetry scale."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "leaves": "array of {data: object} — up to 5000 items to attest",
              "agentId": "string (optional)"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "paid": "boolean",
              "topic": "string",
              "batchId": "string",
              "settled": "boolean",
              "success": "boolean",
              "accepted": "number",
              "algorithm": "ML-DSA-65",
              "attestationIds": "string[] — one per leaf",
              "paymentReceipt": "object — per-leaf dataHash + payment stamp; opens the commitment sealed in each record",
              "verifyUrlPattern": "string"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "properties": {
                    "leaves": {
                      "type": "array",
                      "items": {
                        "type": "object"
                      },
                      "maxItems": 5000,
                      "description": "Items to attest; each becomes a Merkle leaf with its own attestation ID"
                    },
                    "agentId": {
                      "type": "string",
                      "description": "Caller-supplied agent identifier"
                    }
                  }
                },
                "type": {
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ]
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ]
                }
              }
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                }
              }
            }
          }
        },
        "discoverable": true
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required: POST with PAYMENT-SIGNATURE header",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
        "amount": "500000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://rubric-protocol.com/v1/x402/statement",
      "mimeType": "application/json",
      "description": "Signed monthly x402 spend statement for one agent: totals, per-payment lines, Merkle root. The statement is itself an ML-DSA-65 attestation anchored to Hedera mainnet HCS. Render, verify, and print the response free at https://rubric-protocol.com/statement.html"
    },
    "extensions": {},
    "x402Version": 2,
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "format": "string (optional) - 'json' (default) or 'csv'",
          "period": "string (required) - YYYY-MM",
          "agentId": "string (required) - agent whose spend to report"
        }
      },
      "output": {
        "paid": "boolean",
        "lines": "array - per-payment ledger lines",
        "topic": "string",
        "settled": "boolean",
        "success": "boolean",
        "algorithm": "ML-DSA-65",
        "statement": "object - totals, period, merkleRoot",
        "verifyUrl": "string - free public verification",
        "attestationId": "string"
      }
    }
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://rubric-protocol.com/v1/x402/attested-inference",
      "mimeType": "application/json",
      "description": "Attested LLM inference: gpt-4o-mini chat completion plus a post-quantum signed, Hedera-anchored attestation binding the prompt hash, response hash, exact model version, and timestamp. Evidence of which model said what, when — for agents whose decisions may be questioned later."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "POST",
            "bodyType": "json",
            "bodyFields": {
              "messages": "array (required) — OpenAI chat messages, max 8K prompt tokens",
              "max_tokens": "number (optional, capped at 1000)",
              "temperature": "number (optional)"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "paid": true,
              "model": "gpt-4o-mini-2024-07-18",
              "settled": true,
              "success": true,
              "operator": "Rubric Protocol",
              "verifyUrl": "https://rubric-protocol.com/v1/verify/9b98c940-d198-4218-b89a-ebdfd8830175",
              "promptHash": "3e25b554c4ba852a",
              "responseHash": "2d45563c7e93715f",
              "attestationId": "9b98c940-d198-4218-b89a-ebdfd8830175"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ]
                }
              }
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                }
              }
            }
          }
        },
        "discoverable": true
      }
    },
    "x402Version": 2,
    "outputSchema": {
      "type": "object",
      "properties": {
        "paid": {
          "type": "boolean"
        },
        "settled": {
          "type": "boolean"
        },
        "success": {
          "type": "boolean"
        }
      }
    }
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
        "amount": "2000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://rubric-protocol.com/v1/x402/verify-audit",
      "mimeType": "application/json",
      "description": "Independent audit of a Rubric attestation: signature validity, HCS sequence, and direct Hedera mirror-node confirmation. Returns a signed verdict carrying its own attestation ID — a verification you can cite as evidence."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "POST",
            "bodyType": "json",
            "bodyFields": {
              "attestationId": "string (required) — Rubric attestation ID to audit"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "paid": true,
              "settled": true,
              "success": true,
              "verdict": {
                "found": true,
                "status": "anchored",
                "hcsSequence": 280715,
                "mirrorConfirmed": true,
                "auditedAttestationId": "a4cdbce7-05c6-4325-9ac6-e711f480887e"
              },
              "operator": "Rubric Protocol",
              "verifyUrl": "https://rubric-protocol.com/v1/verify/6b586b66-4984-4a3e-a981-bfcc077a8e4c",
              "auditAttestationId": "6b586b66-4984-4a3e-a981-bfcc077a8e4c"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ]
                }
              }
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                }
              }
            }
          }
        },
        "discoverable": true
      }
    },
    "x402Version": 2,
    "outputSchema": {
      "type": "object",
      "properties": {
        "paid": {
          "type": "boolean"
        },
        "settled": {
          "type": "boolean"
        },
        "success": {
          "type": "boolean"
        }
      }
    }
  },
  {
    "error": "PAYMENT-SIGNATURE header is required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
        "amount": "5000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://rubric-protocol.com/v1/x402/agent-record/rubric-assert",
      "mimeType": "application/json",
      "description": "Unforgeable operating history for any AI agent attesting through Rubric Protocol: record count, first-seen date, continuity days, and recent activity, computed from HCS-anchored attestations that cannot be backdated. A counterparty check priced for routine use."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET"
          },
          "output": {
            "type": "json",
            "example": {
              "paid": true,
              "agentId": "rubric-assert",
              "last24h": 312,
              "last30d": 3993,
              "settled": true,
              "success": true,
              "operator": "Rubric Protocol",
              "firstSeen": "2026-07-16T09:34:36.983Z",
              "verifyUrl": "https://rubric-protocol.com/v1/verify/f0e1db0b-67da-4857-93f1-f0e6ec752e43",
              "recordCount": 3993,
              "attestationId": "f0e1db0b-67da-4857-93f1-f0e6ec752e43",
              "continuityDays": 11
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET"
                  ]
                }
              }
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                }
              }
            }
          }
        },
        "discoverable": true
      }
    },
    "x402Version": 2,
    "outputSchema": {
      "type": "object",
      "properties": {
        "paid": {
          "type": "boolean"
        },
        "settled": {
          "type": "boolean"
        },
        "success": {
          "type": "boolean"
        }
      }
    }
  },
  {
    "error": "PAYMENT-SIGNATURE header is required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://rubric-protocol.com/v1/x402/hedera-facts/exchange-rate",
      "mimeType": "application/json",
      "description": "Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET"
          },
          "output": {
            "type": "json",
            "example": {
              "fact": "supply",
              "paid": true,
              "value": {
                "total": "5000000000000000000",
                "released": "4379109625135465505"
              },
              "settled": true,
              "success": true,
              "operator": "Rubric Protocol",
              "verifyUrl": "https://rubric-protocol.com/v1/verify/f734f3ac-0d02-4214-9aca-2961f8fffd58",
              "attestationId": "f734f3ac-0d02-4214-9aca-2961f8fffd58",
              "cacheWindowSeconds": 3600
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET"
                  ]
                }
              }
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                }
              }
            }
          }
        },
        "discoverable": true
      }
    },
    "x402Version": 2,
    "outputSchema": {
      "type": "object",
      "properties": {
        "paid": {
          "type": "boolean"
        },
        "settled": {
          "type": "boolean"
        },
        "success": {
          "type": "boolean"
        }
      }
    }
  },
  {
    "error": "PAYMENT-SIGNATURE header is required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
        "amount": "3000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://rubric-protocol.com/v1/x402/hedera-facts/all",
      "mimeType": "application/json",
      "description": "Bundle of six attested Hedera network facts in one call: exchange rate, gas fees, supply, nodes, throughput, and Rubric topic state, each with its own attestation ID."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET"
          },
          "output": {
            "type": "json",
            "example": {
              "paid": true,
              "facts": {
                "supply": {
                  "attestationId": "f734f3ac-0d02-4214-9aca-2961f8fffd58"
                },
                "exchange-rate": {
                  "attestationId": "d88088bf-b28b-4e00-9983-187febf7caa3"
                }
              },
              "settled": true,
              "success": true,
              "operator": "Rubric Protocol"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET"
                  ]
                }
              }
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                }
              }
            }
          }
        },
        "discoverable": true
      }
    },
    "x402Version": 2,
    "outputSchema": {
      "type": "object",
      "properties": {
        "paid": {
          "type": "boolean"
        },
        "settled": {
          "type": "boolean"
        },
        "success": {
          "type": "boolean"
        }
      }
    }
  },
  {
    "error": "PAYMENT-SIGNATURE header is required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://rubric-protocol.com/v1/x402/regwatch-feed",
      "mimeType": "application/json",
      "description": "Structured feed of regulatory changes affecting AI systems: jurisdiction, instrument, change type, effective dates, comment deadlines. Curated by the team behind The Attestation Brief; every item attested on ingest."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET"
          },
          "output": {
            "type": "json",
            "example": {
              "paid": true,
              "items": [
                {
                  "summary": "Machine-readable disclosure mandate for AI decision systems",
                  "instrument": "SB 315",
                  "change_type": "mandate_effective",
                  "jurisdiction": "US-IL",
                  "effective_date": "2027-01-01"
                }
              ],
              "settled": true,
              "success": true,
              "operator": "Rubric Protocol",
              "itemCount": 4
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET"
                  ]
                }
              }
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                }
              }
            }
          }
        },
        "discoverable": true
      }
    },
    "x402Version": 2,
    "outputSchema": {
      "type": "object",
      "properties": {
        "paid": {
          "type": "boolean"
        },
        "settled": {
          "type": "boolean"
        },
        "success": {
          "type": "boolean"
        }
      }
    }
  }
]

OVER TIME

All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/rubric-protocol-post-quantum-ai-attestation/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME

30d UPTIME 100%

RESPONSE TIME

AVG RESP 344ms

PRICE (captured 402, USD)

Median across 10 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)

price percentile in Verification

site signals present (of 6)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)

DISTINCT BUYERS

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-07-28 · last up 2026-08-13

402 payload captured
accepts[] array present
payTo address recoverable
payTo at accepts[0].payTo (conformant shape)
payTo is a valid on-chain address
atomic price declared
atomic price in a sane range
asset (token) address declared
network resolves to CAIP-2
payment scheme declared
served over HTTPS
declares the current x402 version (2)
EIP-712 domain parameters present on every EVM entry
x402 v2 envelope delivered in the payment-required header

SITE PILLARS

homepage reachable
openapi doc
pricing page
llms.txt
robots.txt
terms page

recent checks (18) live · click to expand

TIME STATUS RESP CAUSE

15:22:06 UTC ● OK 162ms

15:06:07 UTC ● OK 317ms

14:50:05 UTC ● OK 249ms

14:34:05 UTC ● OK 277ms

14:18:05 UTC ● OK 291ms

14:02:04 UTC ● OK 289ms

13:46:04 UTC ● OK 347ms

13:30:02 UTC ● OK 261ms

13:14:03 UTC ● OK 320ms

12:58:02 UTC ● OK 244ms

12:42:02 UTC ● OK 284ms

12:26:05 UTC ● OK 294ms

12:10:05 UTC ● OK 110ms

11:54:06 UTC ● OK 223ms

11:38:08 UTC ● OK 267ms

11:22:06 UTC ● OK 243ms

11:06:06 UTC ● OK 170ms

10:50:07 UTC ● OK 241ms

EMBED THIS BADGE

Show that Rubric Protocol — Post-Quantum AI Attestation is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

status

Rubric Protocol — Post-Quantum AI Attestation uptime on x402-list — live uptime

// HTML

<a href="https://x402-list.com/services/rubric-protocol-post-quantum-ai-attestation?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/rubric-protocol-post-quantum-ai-attestation.svg" alt="Rubric Protocol — Post-Quantum AI Attestation listed on x402-list" height="28">
</a>

// Markdown

[![Rubric Protocol — Post-Quantum AI Attestation on x402-list](https://x402-list.com/badge/rubric-protocol-post-quantum-ai-attestation.svg)](https://x402-list.com/services/rubric-protocol-post-quantum-ai-attestation?utm_source=badge&utm_medium=referral&utm_campaign=embed)

// HTML · live uptime variant

<a href="https://x402-list.com/services/rubric-protocol-post-quantum-ai-attestation?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/rubric-protocol-post-quantum-ai-attestation.svg?data=uptime" alt="Rubric Protocol — Post-Quantum AI Attestation uptime on x402-list" height="28">
</a>

RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]

Earn the verified tier: x402list pays a real call to this endpoint and, if it delivers, the service is delivery-verified. The fee covers the cost of the probe, not the badge; there is no refund if the call does not deliver. Agent and API only, no in-browser signing. See /api.

[ verify this service ($0.25) ]

To request delisting, email info@x402-list.com or update your listing at /services/rubric-protocol-post-quantum-ai-attestation/update.