Roundhouse AI

api.generalrelay.xyz

Real-time maritime data, paid per call. Ask for a vessel by MMSI and get its position and metadata.

SearchLiveeip155:8453Exactvia cdp
https://api.generalrelay.xyz/v1/vessels
Calls · 30d
14→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 25 snapshots so far.
$0.66
Verified settled volume
33 settlements proven x402 by their on-chain EIP-3009 marker.
$0.020
Listed price
As published in the catalog. Always read the live 402 before paying.
14
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-09 19:19Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xcd329EfE4eCb2e87866f75bCf7944550F530e246

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",
  "accepts": [
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
      },
      "payTo": "9BpudpCnChrpp4KfnxAE3r2TXKJTLmvVpF8WSViuaJZ9",
      "amount": "20000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "feePayer": "0xc6699d2aadA6c36Dfea5C248DD70f9CB0235cB63"
      },
      "payTo": "0xcd329EfE4eCb2e87866f75bCf7944550F530e246",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "feePayer": "0xCA5e87f82B3FA093800e6ad67D621A427D79c70D"
      },
      "payTo": "0xcd329EfE4eCb2e87866f75bCf7944550F530e246",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
      },
      "payTo": "9BpudpCnChrpp4KfnxAE3r2TXKJTLmvVpF8WSViuaJZ9",
      "amount": "20000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HX97oTB6wbJ3TtP4sSSYfFuiBSvJYm4ShqyagXGrSQ8r"
      },
      "payTo": "9BpudpCnChrpp4KfnxAE3r2TXKJTLmvVpF8WSViuaJZ9",
      "amount": "20000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.generalrelay.xyz/v1/vessels",
    "mimeType": "application/json",
    "description": "Search vessels by identity, location, or both. Charged per non-empty result: empty array, 400, 500, 503 settle nothing."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "imo": 9394521,
            "lat": 51.5,
            "lon": 0.5,
            "mmsi": "232004521",
            "name": "PACIFIC",
            "lat_max": 52,
            "lat_min": 51,
            "lon_max": 1,
            "lon_min": 0,
            "radius_km": 50
          }
        },
        "output": {
          "type": "json",
          "example": {
            "description": "Search vessels by identity, location, or both. Charged per non-empty result: empty array, 400, 500, 503 settle nothing."
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [],
                "properties": {
                  "imo": {
                    "type": "integer",
                    "description": "IMO number, exact match. A seven-digit international ship identifier. ANDs with name/mmsi/spatial filters."
                  },
                  "lat": {
                    "type": "number",
                    "description": "Center latitude in decimal degrees, for radius mode. Must be between -90 and 90."
                  },
                  "lon": {
                    "type": "number",
                    "description": "Center longitude in decimal degrees, for radius mode. Must be between -180 and 180."
                  },
                  "mmsi": {
                    "type": "string",
                    "pattern": "^[0-9]{9}$",
                    "description": "The vessel's MMSI, exactly nine decimal digits, e.g. 366123456. Sent as text: leading zeros are significant. ANDs with other identity/spatial filters."
                  },
                  "name": {
                    "type": "string",
                    "description": "Vessel name, case-insensitive substring match. Leading and trailing whitespace is stripped. Example: name=PACIFIC matches \"PACIFIC ENDEAVOUR\". Combines with spatial and other identity filters."
                  },
                  "lat_max": {
                    "type": "number",
                    "description": "Northern latitude bound in decimal degrees, for bbox mode. Must be between -90 and 90, and greater than or equal to lat_min. The span (lat_max - lat_min) must not exceed 5°."
                  },
                  "lat_min": {
                    "type": "number",
                    "description": "Southern latitude bound in decimal degrees, for bbox mode. Must be between -90 and 90, and less than or equal to lat_max. The span (lat_max - lat_min) must not exceed 5°."
                  },
                  "lon_max": {
                    "type": "number",
                    "description": "Eastern longitude bound in decimal degrees, for bbox mode. Must be between -180 and 180, and greater than or equal to lon_min. The span (lon_max - lon_min) must not exceed 5°."
                  },
                  "lon_min": {
                    "type": "number",
                    "description": "Western longitude bound in decimal degrees, for bbox mode. Must be between -180 and 180, and less than or equal to lon_max. The span (lon_max - lon_min) must not exceed 5°."
                  },
                  "radius_km": {
                    "type": "number",
                    "description": "Search radius in kilometers, for radius mode. Must be between 0.1 and 500."
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "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.

20000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to
9Bpudp…uaJZ9
Token contract
EPjFWd…TDt1v
Payment window
5 minutes
0.02USDC≈ $0.02 USD
on Base · exact scheme

Pay 0.02 USDC on Base to 0xcd32…0e246. The signed payment is good for 5 minutes.

Paid to
0xcd32…0e246
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
20000 smallest units
0.02USDC≈ $0.02 USD
on Base · exact scheme

Pay 0.02 USDC on Base to 0xcd32…0e246. The signed payment is good for 5 minutes.

Paid to
0xcd32…0e246
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
20000 smallest units
20000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to
9Bpudp…uaJZ9
Token contract
EPjFWd…TDt1v
Payment window
5 minutes
20000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to
9Bpudp…uaJZ9
Token contract
EPjFWd…TDt1v
Payment window
5 minutes
The catalog’s raw entry
[
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
    },
    "payTo": "9BpudpCnChrpp4KfnxAE3r2TXKJTLmvVpF8WSViuaJZ9",
    "amount": "20000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "feePayer": "0xc6699d2aadA6c36Dfea5C248DD70f9CB0235cB63"
    },
    "payTo": "0xcd329EfE4eCb2e87866f75bCf7944550F530e246",
    "amount": "20000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "feePayer": "0xCA5e87f82B3FA093800e6ad67D621A427D79c70D"
    },
    "payTo": "0xcd329EfE4eCb2e87866f75bCf7944550F530e246",
    "amount": "20000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
    },
    "payTo": "9BpudpCnChrpp4KfnxAE3r2TXKJTLmvVpF8WSViuaJZ9",
    "amount": "20000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "HX97oTB6wbJ3TtP4sSSYfFuiBSvJYm4ShqyagXGrSQ8r"
    },
    "payTo": "9BpudpCnChrpp4KfnxAE3r2TXKJTLmvVpF8WSViuaJZ9",
    "amount": "20000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "imo": 9394521,
          "lat": 51.5,
          "lon": 0.5,
          "mmsi": "232004521",
          "name": "PACIFIC",
          "lat_max": 52,
          "lat_min": 51,
          "lon_max": 1,
          "lon_min": 0,
          "radius_km": 50
        }
      },
      "output": {
        "type": "json",
        "example": {
          "description": "Search vessels by identity, location, or both. Charged per non-empty result: empty array, 400, 500, 503 settle nothing."
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [],
              "properties": {
                "imo": {
                  "type": "integer",
                  "description": "IMO number, exact match. A seven-digit international ship identifier. ANDs with name/mmsi/spatial filters."
                },
                "lat": {
                  "type": "number",
                  "description": "Center latitude in decimal degrees, for radius mode. Must be between -90 and 90."
                },
                "lon": {
                  "type": "number",
                  "description": "Center longitude in decimal degrees, for radius mode. Must be between -180 and 180."
                },
                "mmsi": {
                  "type": "string",
                  "pattern": "^[0-9]{9}$",
                  "description": "The vessel's MMSI, exactly nine decimal digits, e.g. 366123456. Sent as text: leading zeros are significant. ANDs with other identity/spatial filters."
                },
                "name": {
                  "type": "string",
                  "description": "Vessel name, case-insensitive substring match. Leading and trailing whitespace is stripped. Example: name=PACIFIC matches \"PACIFIC ENDEAVOUR\". Combines with spatial and other identity filters."
                },
                "lat_max": {
                  "type": "number",
                  "description": "Northern latitude bound in decimal degrees, for bbox mode. Must be between -90 and 90, and greater than or equal to lat_min. The span (lat_max - lat_min) must not exceed 5°."
                },
                "lat_min": {
                  "type": "number",
                  "description": "Southern latitude bound in decimal degrees, for bbox mode. Must be between -90 and 90, and less than or equal to lat_max. The span (lat_max - lat_min) must not exceed 5°."
                },
                "lon_max": {
                  "type": "number",
                  "description": "Eastern longitude bound in decimal degrees, for bbox mode. Must be between -180 and 180, and greater than or equal to lon_min. The span (lon_max - lon_min) must not exceed 5°."
                },
                "lon_min": {
                  "type": "number",
                  "description": "Western longitude bound in decimal degrees, for bbox mode. Must be between -180 and 180, and less than or equal to lon_max. The span (lon_max - lon_min) must not exceed 5°."
                },
                "radius_km": {
                  "type": "number",
                  "description": "Search radius in kilometers, for radius mode. Must be between 0.1 and 500."
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-09 19:19Z
Last indexed by Roundhouse
2026-09-15 00:31Z
Last enriched (probe, favicon, geo)
2026-09-13 18:15Z
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. 25 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 api.generalrelay.xyz 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=api.generalrelay.xyz'
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.generalrelay.xyz/v1/vessels, 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.