Roundhouse

witness.holoweave.org

Web bot auth debugging for AI agents, priced per check at $0.01. RFC 7638 keyid thumbprint verification, RFC 9421 Ed25519 signature verification, and per-verifier acceptance rules. Signed attestations, published fixtures, sources with dates.

DataLiveeip155:8453Exactvia cdp
https://witness.holoweave.org/v1/tx-finality
Calls · 30d
4→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 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.
4
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-27 06:25Z
—
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/tx-finality",
    "mimeType": "application/json",
    "description": "Settlement receipt for a Base transaction, signed by an independent witness: did it succeed, which USDC transfers it carried (from, to, amount), block time, confirmations, and whether the block is safe or finalized per the chain's own tags. Verify an x402 payment you sent or received without trusting the facilitator. Onchain, keyless, Base mainnet and Sepolia."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "chain": "eip155:8453",
            "tx_hash": "0x1785dbb0ea2d2d9f415ce0cad809b7a22269e2cc223e086c26774aa0347f5127"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "example": {
            "signature": {
              "alg": "ed25519",
              "value": "base64...",
              "key_id": "aw-attest-2026-08"
            },
            "attestation": {
              "verdict": "pass",
              "endpoint": "tx-finality",
              "evidence": {
                "finality": "finalized",
                "succeeded": true,
                "transfers": [
                  {
                    "to": "0x9975…",
                    "from": "0x423d…",
                    "amount": "0.010000",
                    "symbol": "USDC"
                  }
                ],
                "block_number": 50500000,
                "confirmations": 1200
              }
            }
          }
        }
      },
      "schema": {
        "type": "object",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "tx_hash"
                ],
                "properties": {
                  "chain": {
                    "type": "string",
                    "description": "eip155:8453 (Base mainnet, default) or eip155:84532 (Base Sepolia)."
                  },
                  "expect": {
                    "type": "object",
                    "description": "Optional: { to, amount, token } — the transfer you expect; you get EXPECTED_TRANSFER_PRESENT or ABSENT."
                  },
                  "tx_hash": {
                    "type": "string",
                    "description": "The transaction hash, 0x + 64 hex."
                  }
                }
              },
              "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": {
          "chain": "eip155:8453",
          "tx_hash": "0x1785dbb0ea2d2d9f415ce0cad809b7a22269e2cc223e086c26774aa0347f5127"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "example": {
          "signature": {
            "alg": "ed25519",
            "value": "base64...",
            "key_id": "aw-attest-2026-08"
          },
          "attestation": {
            "verdict": "pass",
            "endpoint": "tx-finality",
            "evidence": {
              "finality": "finalized",
              "succeeded": true,
              "transfers": [
                {
                  "to": "0x9975…",
                  "from": "0x423d…",
                  "amount": "0.010000",
                  "symbol": "USDC"
                }
              ],
              "block_number": 50500000,
              "confirmations": 1200
            }
          }
        }
      }
    },
    "schema": {
      "type": "object",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "tx_hash"
              ],
              "properties": {
                "chain": {
                  "type": "string",
                  "description": "eip155:8453 (Base mainnet, default) or eip155:84532 (Base Sepolia)."
                },
                "expect": {
                  "type": "object",
                  "description": "Optional: { to, amount, token } — the transfer you expect; you get EXPECTED_TRANSFER_PRESENT or ABSENT."
                },
                "tx_hash": {
                  "type": "string",
                  "description": "The transaction hash, 0x + 64 hex."
                }
              }
            },
            "type": {
              "const": "http"
            },
            "method": {
              "const": "POST"
            },
            "bodyType": {
              "const": "json"
            }
          }
        },
        "output": {
          "type": "object"
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-08-27 06:24Z
Last indexed by Roundhouse
2026-08-29 00:30Z
Last enriched (probe, favicon, geo)
2026-09-12 18:15Z
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. 3 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/tx-finality, 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.