Roundhouse AI

witness.holoweave.org

Web bot auth signature verification for AI agents. Verifies an RFC 9421 HTTP message signature against the Ed25519 key published at the agent's key directory, and returns a signed attestation naming the component that failed.

SocialLiveeip155:8453Exactvia cdp
https://witness.holoweave.org/v1/wba-signature
Calls · 30d
8→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 4 snapshots so far.
$1.82
Verified settled volume
67 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
8
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-26 15:45Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x99750832036f54aa0c12cfa3b46827f2babcbbdd

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": "POST a JSON body to this URL with a PAYMENT-SIGNATURE header. A GET advertises the price and returns no verdict.",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x99750832036f54aa0c12cfa3b46827f2babcbbdd",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://witness.holoweave.org/v1/wba-signature",
    "mimeType": "application/json",
    "description": "Does your signature verify against the key you published? RFC 9421 signature base, Ed25519"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "request_sample": {
              "url": "https://example.com/foo",
              "method": "POST",
              "headers": {
                "Date": "Tue, 20 Apr 2021 02:07:55 GMT",
                "Signature": "sig1=:base64signature==:",
                "Signature-Agent": "\"https://signer.example\"",
                "Signature-Input": "sig1=(\"date\" \"@method\" \"@authority\");created=1618884473;keyid=\"poqkLGiymh_W0uP6PZFw-dvez3QJT5SolqXBCW38r0U\""
              }
            }
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "example": {
            "signature": {
              "alg": "ed25519",
              "value": "base64...",
              "key_id": "aw-attest-2026-08"
            },
            "attestation": {
              "verdict": "fail",
              "endpoint": "wba-signature",
              "evidence": {
                "results": {
                  "sig1": {
                    "reason": "key_not_selectable",
                    "verified": null
                  }
                }
              },
              "findings": [
                {
                  "code": "SIG_KEY_NOT_SELECTABLE",
                  "detail": "keyid is the kid, not the RFC 7638 thumbprint, so the signature was never tested.",
                  "severity": "blocking"
                }
              ]
            }
          }
        }
      },
      "schema": {
        "type": "object",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "request_sample"
                ],
                "properties": {
                  "key_directory": {
                    "type": "string",
                    "format": "uri",
                    "description": "Optional. The agent's JWKS. Taken from the Signature-Agent header when omitted."
                  },
                  "request_sample": {
                    "type": "object",
                    "required": [
                      "url",
                      "headers"
                    ],
                    "properties": {
                      "url": {
                        "type": "string",
                        "format": "uri",
                        "description": "Full request URL; @authority, @path and @query are derived from it"
                      },
                      "method": {
                        "type": "string",
                        "description": "HTTP method"
                      },
                      "headers": {
                        "type": "object",
                        "description": "All headers, including Signature-Input, Signature and Signature-Agent"
                      }
                    },
                    "description": "The signed request to verify, as it was sent."
                  }
                }
              },
              "type": {
                "const": "http"
              },
              "method": {
                "const": "POST"
              },
              "bodyType": {
                "const": "json"
              }
            }
          },
          "output": {
            "type": "object"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Accepts

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

0.01USDC≈ $0.01 USD
on Base · exact scheme

Pay 0.01 USDC on Base to 0x9975…cbbdd. The signed payment is good for 1 minute.

Paid to
0x9975…cbbdd
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
10000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x99750832036f54aa0c12cfa3b46827f2babcbbdd",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "request_sample": {
            "url": "https://example.com/foo",
            "method": "POST",
            "headers": {
              "Date": "Tue, 20 Apr 2021 02:07:55 GMT",
              "Signature": "sig1=:base64signature==:",
              "Signature-Agent": "\"https://signer.example\"",
              "Signature-Input": "sig1=(\"date\" \"@method\" \"@authority\");created=1618884473;keyid=\"poqkLGiymh_W0uP6PZFw-dvez3QJT5SolqXBCW38r0U\""
            }
          }
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "example": {
          "signature": {
            "alg": "ed25519",
            "value": "base64...",
            "key_id": "aw-attest-2026-08"
          },
          "attestation": {
            "verdict": "fail",
            "endpoint": "wba-signature",
            "evidence": {
              "results": {
                "sig1": {
                  "reason": "key_not_selectable",
                  "verified": null
                }
              }
            },
            "findings": [
              {
                "code": "SIG_KEY_NOT_SELECTABLE",
                "detail": "keyid is the kid, not the RFC 7638 thumbprint, so the signature was never tested.",
                "severity": "blocking"
              }
            ]
          }
        }
      }
    },
    "schema": {
      "type": "object",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "request_sample"
              ],
              "properties": {
                "key_directory": {
                  "type": "string",
                  "format": "uri",
                  "description": "Optional. The agent's JWKS. Taken from the Signature-Agent header when omitted."
                },
                "request_sample": {
                  "type": "object",
                  "required": [
                    "url",
                    "headers"
                  ],
                  "properties": {
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "description": "Full request URL; @authority, @path and @query are derived from it"
                    },
                    "method": {
                      "type": "string",
                      "description": "HTTP method"
                    },
                    "headers": {
                      "type": "object",
                      "description": "All headers, including Signature-Input, Signature and Signature-Agent"
                    }
                  },
                  "description": "The signed request to verify, as it was sent."
                }
              }
            },
            "type": {
              "const": "http"
            },
            "method": {
              "const": "POST"
            },
            "bodyType": {
              "const": "json"
            }
          }
        },
        "output": {
          "type": "object"
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-08-26 15:45Z
Last indexed by Roundhouse
2026-08-29 00:30Z
Last enriched (probe, favicon, geo)
2026-09-24 11:45Z
x402 version
2
Max timeout
60s
Liveness probe
HTTP 410
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. 4 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 witness.holoweave.org 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=witness.holoweave.org'
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://witness.holoweave.org/v1/wba-signature, 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.