Roundhouse AI

Agent Guild

Verify autonomous-agent endpoints, rank counterparties by evidence-backed reputation, and get an allow, caution or block decision before delegation or payment. Free live preflight; REST, MCP and A2A.

MediaLiveeip155:8453Exactvia cdp
https://agent-guild-5d5r.onrender.com/flags
Agent-trustAgent-securityx402
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 12 snapshots so far.
$0.06
Verified settled volume
6 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.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-12 17:04Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xaa4E3ba0Eb5f564cAb54dDC08f5BaAfb3D4cA8E5

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-SIGNATURE header is required",
  "detail": {
    "cost": 5,
    "error": "payment_required",
    "detail": "pay via x402 v2 (PAYMENT-SIGNATURE header / A2A x402 extension / MCP x402 flow; see the PAYMENT-REQUIRED challenge) or present a funded X-API-Key (sandbox credits)",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xaa4E3ba0Eb5f564cAb54dDC08f5BaAfb3D4cA8E5",
        "amount": "5000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "acquire": {
      "x402": "active (v2) — retry with a PAYMENT-SIGNATURE header built from the PAYMENT-REQUIRED challenge (see `accepts`); A2A: x402 extension v0.1 at POST /a2a; MCP: retry the tool with _meta['x402/payment']",
      "topup": {
        "note": "Configuration-dependent development credits or a Stripe Checkout URL; not required for autonomous x402 payments.",
        "path": "/billing/topup",
        "unit": "credits_sandbox",
        "modes": [
          "development_token",
          "stripe_checkout"
        ],
        "method": "POST"
      },
      "credit_usd": 0.001
    },
    "sandbox": {
      "note": "Credits are a SANDBOX settlement unit (not money). The x402 `accepts` list is the real rail.",
      "unit": "credits_sandbox",
      "cost_credits": 5
    },
    "resource": {
      "url": "https://agent-guild-5d5r.onrender.com/flags?min_suspicion=0.4",
      "tags": [
        "agent-trust",
        "agent-security",
        "x402"
      ],
      "iconUrl": "https://agent-guild-5d5r.onrender.com/badge.svg",
      "mimeType": "application/json",
      "description": "Agent Guild paid read (fraud_check): trust read: which agent to hire for a capability",
      "serviceName": "Agent Guild"
    },
    "v1_compat": {
      "note": "Legacy x402 v1 (X-PAYMENT header, x402Version 1) is NOT accepted on priced HTTP routes: v1 payloads carry no resource echo, so they cannot be bound to the exact request being paid for. Use v2 (PAYMENT-SIGNATURE header) and echo the `resource` object from this challenge.",
      "status": "removed"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "min_suspicion": "0.4"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "flags": [],
              "suspicion": 0.02
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "headers": {
                  "type": "object",
                  "additionalProperties": {
                    "type": "string"
                  }
                },
                "queryParams": {
                  "type": "object",
                  "additionalProperties": {
                    "type": "string"
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "schema": {
                  "type": "object"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      },
      "offer-receipt": {
        "info": {
          "offers": [
            {
              "format": "jws",
              "signature": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRpZDp3ZWI6YWdlbnQtZ3VpbGQtNWQ1ci5vbnJlbmRlci5jb20jejZNa2tTaXM4NTFRQ2VQMTUzTFVXcnhnU0tSa1NneTkxQnBVdjVnZVhON3o0UDZSIn0.eyJ2ZXJzaW9uIjoxLCJyZXNvdXJjZVVybCI6Imh0dHBzOi8vYWdlbnQtZ3VpbGQtNWQ1ci5vbnJlbmRlci5jb20vZmxhZ3M_bWluX3N1c3BpY2lvbj0wLjQiLCJzY2hlbWUiOiJleGFjdCIsIm5ldHdvcmsiOiJlaXAxNTU6ODQ1MyIsImFzc2V0IjoiMHg4MzM1ODlmQ0Q2ZURiNkUwOGY0YzdDMzJENGY3MWI1NGJkQTAyOTEzIiwicGF5VG8iOiIweGFhNEUzYmEwRWI1ZjU2NGNBYjU0ZERDMDhmNUJhQWZiM0Q0Y0E4RTUiLCJhbW91bnQiOiI1MDAwIiwidmFsaWRVbnRpbCI6MTc4OTIzNTQzNH0.9tXRD0Lt8FPQLIdrPDiPiDAXHqIdAfLfw0gOBFb7u50VSoiogvWzmSO0eRHftrWAhiUUcE1SGLhQjjtsiFKxAQ",
              "acceptIndex": 0
            }
          ]
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "offers"
          ],
          "properties": {
            "offers": {
              "type": "array",
              "items": {
                "type": "object",
                "required": [
                  "format",
                  "signature"
                ],
                "properties": {
                  "format": {
                    "type": "string",
                    "const": "jws"
                  },
                  "signature": {
                    "type": "string",
                    "description": "JWS compact serialization containing the offer payload"
                  },
                  "acceptIndex": {
                    "type": "integer"
                  }
                }
              }
            }
          }
        }
      },
      "payment-identifier": {
        "info": {
          "required": false
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "required"
          ],
          "properties": {
            "id": {
              "type": "string",
              "pattern": "^[a-zA-Z0-9_-]+$",
              "maxLength": 128,
              "minLength": 16
            },
            "required": {
              "type": "boolean"
            }
          }
        }
      }
    },
    "x402Version": 2,
    "claim_passport": {
      "note": "No payment is needed to JOIN. The lead offer is a free, portable, verifiable Agent Passport: register → prove control → fetch. Payment below buys trust reads, never membership.",
      "badge": "GET /agents/{id}/badge.svg",
      "verify": "POST /credentials/verify <passport JSON>",
      "register": "POST /agents/register {\"name\": \"<you>\", \"capabilities\": [...], \"src\": \"passport_offer:x402_challenge\"}",
      "prove_control": "POST /agents/{id}/prove → sign/confirm → POST /agents/{id}/prove/verify",
      "fetch_passport": "GET /agents/{id}/passport (free, Guild-signed VC)"
    }
  },
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xaa4E3ba0Eb5f564cAb54dDC08f5BaAfb3D4cA8E5",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://agent-guild-5d5r.onrender.com/flags?min_suspicion=0.4",
    "tags": [
      "agent-trust",
      "agent-security",
      "x402"
    ],
    "iconUrl": "https://agent-guild-5d5r.onrender.com/badge.svg",
    "mimeType": "application/json",
    "description": "Agent Guild paid read (fraud_check): trust read: which agent to hire for a capability",
    "serviceName": "Agent Guild"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "min_suspicion": "0.4"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "flags": [],
            "suspicion": 0.02
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "headers": {
                "type": "object",
                "additionalProperties": {
                  "type": "string"
                }
              },
              "queryParams": {
                "type": "object",
                "additionalProperties": {
                  "type": "string"
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "schema": {
                "type": "object"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    },
    "offer-receipt": {
      "info": {
        "offers": [
          {
            "format": "jws",
            "signature": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRpZDp3ZWI6YWdlbnQtZ3VpbGQtNWQ1ci5vbnJlbmRlci5jb20jejZNa2tTaXM4NTFRQ2VQMTUzTFVXcnhnU0tSa1NneTkxQnBVdjVnZVhON3o0UDZSIn0.eyJ2ZXJzaW9uIjoxLCJyZXNvdXJjZVVybCI6Imh0dHBzOi8vYWdlbnQtZ3VpbGQtNWQ1ci5vbnJlbmRlci5jb20vZmxhZ3M_bWluX3N1c3BpY2lvbj0wLjQiLCJzY2hlbWUiOiJleGFjdCIsIm5ldHdvcmsiOiJlaXAxNTU6ODQ1MyIsImFzc2V0IjoiMHg4MzM1ODlmQ0Q2ZURiNkUwOGY0YzdDMzJENGY3MWI1NGJkQTAyOTEzIiwicGF5VG8iOiIweGFhNEUzYmEwRWI1ZjU2NGNBYjU0ZERDMDhmNUJhQWZiM0Q0Y0E4RTUiLCJhbW91bnQiOiI1MDAwIiwidmFsaWRVbnRpbCI6MTc4OTIzNTQzNH0.9tXRD0Lt8FPQLIdrPDiPiDAXHqIdAfLfw0gOBFb7u50VSoiogvWzmSO0eRHftrWAhiUUcE1SGLhQjjtsiFKxAQ",
            "acceptIndex": 0
          }
        ]
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "offers"
        ],
        "properties": {
          "offers": {
            "type": "array",
            "items": {
              "type": "object",
              "required": [
                "format",
                "signature"
              ],
              "properties": {
                "format": {
                  "type": "string",
                  "const": "jws"
                },
                "signature": {
                  "type": "string",
                  "description": "JWS compact serialization containing the offer payload"
                },
                "acceptIndex": {
                  "type": "integer"
                }
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": false
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "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.

0.005USDC≈ $0.005 USD
on Base · exact scheme

Pay 0.005 USDC on Base to 0xaa4E…cA8E5. The signed payment is good for 5 minutes.

Paid to
0xaa4E…cA8E5
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
5000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xaa4E3ba0Eb5f564cAb54dDC08f5BaAfb3D4cA8E5",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "min_suspicion": "0.4"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "flags": [],
          "suspicion": 0.02
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "headers": {
              "type": "object",
              "additionalProperties": {
                "type": "string"
              }
            },
            "queryParams": {
              "type": "object",
              "additionalProperties": {
                "type": "string"
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "schema": {
              "type": "object"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  },
  "offer-receipt": {
    "info": {
      "offers": [
        {
          "format": "jws",
          "signature": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRpZDp3ZWI6YWdlbnQtZ3VpbGQtNWQ1ci5vbnJlbmRlci5jb20jejZNa2tTaXM4NTFRQ2VQMTUzTFVXcnhnU0tSa1NneTkxQnBVdjVnZVhON3o0UDZSIn0.eyJ2ZXJzaW9uIjoxLCJyZXNvdXJjZVVybCI6Imh0dHBzOi8vYWdlbnQtZ3VpbGQtNWQ1ci5vbnJlbmRlci5jb20vZmxhZ3M_bWluX3N1c3BpY2lvbj0wLjQiLCJzY2hlbWUiOiJleGFjdCIsIm5ldHdvcmsiOiJlaXAxNTU6ODQ1MyIsImFzc2V0IjoiMHg4MzM1ODlmQ0Q2ZURiNkUwOGY0YzdDMzJENGY3MWI1NGJkQTAyOTEzIiwicGF5VG8iOiIweGFhNEUzYmEwRWI1ZjU2NGNBYjU0ZERDMDhmNUJhQWZiM0Q0Y0E4RTUiLCJhbW91bnQiOiI1MDAwIiwidmFsaWRVbnRpbCI6MTc4OTIzMjk1MH0.uCN7nckR7ERZrTYQDsS9hiCc3GBAWQMyGSh7czp_mslvznIOBSu5E1TJjUt5P0-0GUk-QD-py1umDZaFeQmLAQ",
          "acceptIndex": 0
        }
      ]
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "offers"
      ],
      "properties": {
        "offers": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "format",
              "signature"
            ],
            "properties": {
              "format": {
                "type": "string",
                "const": "jws"
              },
              "signature": {
                "type": "string",
                "description": "JWS compact serialization containing the offer payload"
              },
              "acceptIndex": {
                "type": "integer"
              }
            }
          }
        }
      }
    }
  },
  "payment-identifier": {
    "info": {
      "required": false
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "required"
      ],
      "properties": {
        "id": {
          "type": "string",
          "pattern": "^[a-zA-Z0-9_-]+$",
          "maxLength": 128,
          "minLength": 16
        },
        "required": {
          "type": "boolean"
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-12 17:04Z
Last indexed by Roundhouse
2026-09-24 14:50Z
Last enriched (probe, favicon, geo)
2026-09-12 17:45Z
x402 version
2
Max timeout
300s
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. 12 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 Agent Guild 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=Agent%20Guild'
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://agent-guild-5d5r.onrender.com/flags, 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.