Roundhouse

VerityLayer

Verity is an independent, fail-closed verification engine that catches your AI

InferenceLiveeip155:8453Exactvia cdp
https://api.veritylayer.dev/verify
Fact-checkVerificationTrustAi-safetyReceipts
Activity
—
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record.
$4.85
Verified settled volume
41 settlements proven x402 by their on-chain EIP-3009 marker.
$0.250
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-07-05 19:13Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x89d38023167bdA453BeD9F6CbF22dDd1EC5f70a7

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.

Accepts

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

0.25USDC≈ $0.25 USD
on Base · exact scheme

Pay 0.25 USDC on Base to 0x89d3…f70a7. The signed payment is good for 5 minutes.

Paid to
0x89d3…f70a7
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
250000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x89d38023167bdA453BeD9F6CbF22dDd1EC5f70a7",
    "amount": "250000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "claim": "The Eiffel Tower is in Paris."
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "verdict": "supported",
          "evidence": [
            "Encyclopaedia Britannica — Eiffel Tower, Paris, France."
          ],
          "reasoning": "Multiple authoritative sources place the Eiffel Tower on the Champ de Mars in Paris, France.",
          "confidence": 0.97
        }
      }
    },
    "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",
              "required": [
                "claim"
              ],
              "properties": {
                "claim": {
                  "type": "string"
                },
                "context": {
                  "type": "string"
                }
              }
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "title": "VerifyResponse",
              "required": [
                "verdict",
                "confidence",
                "reasoning",
                "evidence"
              ],
              "properties": {
                "receipt": {
                  "anyOf": [
                    {
                      "type": "object",
                      "additionalProperties": true
                    },
                    {
                      "type": "null"
                    }
                  ],
                  "title": "Receipt",
                  "default": null
                },
                "verdict": {
                  "enum": [
                    "supported",
                    "unsupported",
                    "uncertain"
                  ],
                  "type": "string",
                  "title": "Verdict"
                },
                "evidence": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  },
                  "title": "Evidence"
                },
                "reasoning": {
                  "type": "string",
                  "title": "Reasoning"
                },
                "confidence": {
                  "type": "number",
                  "title": "Confidence"
                }
              },
              "description": "A Verdict plus (when signing is configured) a self-contained Ed25519 receipt —\nproof forever that Verity issued exactly this verdict for exactly this claim."
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-07-05 19:13Z
Last indexed by Roundhouse
2026-08-04 03:20Z
Last enriched (probe, favicon, geo)
2026-09-14 00:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 405
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

Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record. 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 VerityLayer 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=VerityLayer'
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://api.veritylayer.dev/verify, 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.