rubric-protocol.com

Name: rubric-protocol.com
Price: 0.005 USDC
Availability: InStock

Prove your AI followed the rules — without exposing your models or data. Rubric creates tamper-evident, independently verifiable audit trails for every AI decision.

OtherLiveeip155:8453Exactvia cdp

https://rubric-protocol.com/v1/x402/tiered-attest

Calls · 30d

14↓ 33%

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far.

$37.26

Verified settled volume

886 settlements proven x402 by their on-chain EIP-3009 marker.

$0.0050

Listed price

As published in the catalog. Always read the live 402 before paying.

Calls · 30d

Upstream's own call count for this endpoint, not ours.

Unique payers · 30d

Last called 2026-09-18 14:16Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0xaB6731A0BcDf511c2842C768a03448075aB654ca

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "Payment required: POST with PAYMENT-SIGNATURE header",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    }
  ],
  "contact": "/contact?topic=x402",
  "gateway": "/docs.html#specifications",
  "resource": {
    "url": "https://rubric-protocol.com/v1/x402/tiered-attest",
    "tags": [
      "attestation",
      "compliance",
      "audit"
    ],
    "iconUrl": "https://rubric-protocol.com/favicon.ico",
    "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.",
    "serviceName": "Rubric Protocol"
  },
  "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",
            "x402Payment": "object — payment block injected into your `data` before committing. Returned because the commitment covers it and you cannot reconstruct it: {x402Version, scheme, network, asset, amountAtomic, payer}",
            "attestationId": "string",
            "commitmentSalt": "string — opening salt; recompute SHA-256(salt + RFC8785({...data, x402Payment})) to verify. Not the decryption key.",
            "payloadCommitment": "string — commitment to your `data` PLUS `x402Payment`, not to `data` alone"
          }
        }
      },
      "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",
      "x402Payment": "object — payment block injected into your `data` before committing. Returned because the commitment covers it and you cannot reconstruct it: {x402Version, scheme, network, asset, amountAtomic, payer}",
      "attestationId": "string",
      "commitmentSalt": "string — opening salt; recompute SHA-256(salt + RFC8785({...data, x402Payment})) to verify. Not the decryption key.",
      "payloadCommitment": "string — commitment to your `data` PLUS `x402Payment`, not to `data` alone"
    }
  }
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.005USDC≈ $0.005 USD

on Base · exact scheme

Pay 0.005 USDC on Base to 0xaB67…654ca. The signed payment is good for 2 minutes.

Paid to: 0xaB67…654ca
USD Coin contract: 0x8335…02913
Payment window: 2 minutes
As published: 5000 smallest units
Buys: One post-quantum-signed AI decision attestation, anchored to Hedera mainnet HCS.
Returns: application/json

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
    "scheme": "exact",
    "network": "base",
    "mimeType": "application/json",
    "resource": "https://rubric-protocol.com/v1/x402/tiered-attest",
    "description": "One post-quantum-signed AI decision attestation, anchored to Hedera mainnet HCS.",
    "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"
      }
    },
    "maxAmountRequired": "5000",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "data": "object (optional) — attested content",
          "agentId": "string (optional)"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {}
    },
    "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"
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json"
              ],
              "type": "string"
            }
          }
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog: 2026-07-23 17:22Z
Last indexed by Roundhouse: 2026-09-25 08:10Z
Last enriched (probe, favicon, geo): 2026-09-23 23:15Z
x402 version: 1
Max timeout: 120s
Liveness probe: HTTP 402

Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md

Show the prompt

Using Roundhouse, look up the x402 service rubric-protocol.com and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=rubric-protocol.com'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://rubric-protocol.com/v1/x402/tiered-attest, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.