Roundhouse AI

2s

Search the NTSB civil aviation accident & incident database (CAROL) — US events from 1962 to present plus selected foreign investigations. Filter by aircraft registration (N-number, partial match), US state (2-letter code or name), make, model, city, and/or event date range (dateFrom/dateTo as YYYY-MM-DD). At least one filter is required. Returns matching events newest-first: NTSB number, event date/type, city/state/country, aircraft registration(s)/make(s)/model(s), highest injury level, onboard & on-ground injury counts, report type/status, and a link to the official NTSB case page. Data: NTSB (U.S. public domain), live. For aviation safety research, fleet/tail-number history, incident due-diligence, and accident-trend analysis.

SearchLiveeip155:8453Exactvia cdp
https://2s.io/api/aviation/accidents
Public-recordsIdentifiersAi-agentsUs-gov-datax402
Settlements · 30d
1,178↑ 64%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$15.85
Verified settled volume
A floor: summed over 5,000 of 36,082 verified settlements.
$0.0012
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 2026-06-17 21:45Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5

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 required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "name": "USDC",
        "version": "1",
        "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
      },
      "payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
      "amount": "3000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://2s.io/api/aviation/accidents",
    "tags": [
      "public-records",
      "identifiers",
      "ai-agents",
      "us-gov-data",
      "x402",
      "upto-billing",
      "ai-gateway",
      "agent-infrastructure"
    ],
    "iconUrl": "https://2s.io/icon-512.png",
    "mimeType": "application/json",
    "description": "Search the NTSB civil aviation accident & incident database (CAROL) — US events from 1962 to present plus selected foreign investigations. Filter by aircraft registration (N-number, partial match), US state (2-letter code or name), make, model, city, and/or event date range (dateFrom/dateTo as YYYY-MM-DD). At least one filter is required. Returns matching events newest-first: NTSB number, event date/type, city/state/country, aircraft registration(s)/make(s)/model(s), highest injury level, onboard & on-ground injury counts, report type/status, and a link to the official NTSB case page. Data: NTSB (U.S. public domain), live. For aviation safety research, fleet/tail-number history, incident due-diligence, and accident-trend analysis.",
    "serviceName": "2s"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "limit": 5,
            "registration": "N1330Y"
          }
        },
        "output": {
          "type": "json",
          "schema": {
            "type": "object",
            "properties": {
              "count": {
                "type": "integer"
              },
              "items": {
                "type": "array",
                "items": {
                  "type": "object",
                  "properties": {
                    "city": {
                      "type": "string"
                    },
                    "make": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    },
                    "mkey": {
                      "type": "string"
                    },
                    "model": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    },
                    "state": {
                      "type": "string"
                    },
                    "country": {
                      "type": "string"
                    },
                    "eventDate": {
                      "type": "string"
                    },
                    "eventType": {
                      "type": "string"
                    },
                    "reportUrl": {
                      "type": "string"
                    },
                    "ntsbNumber": {
                      "type": "string"
                    },
                    "reportType": {
                      "type": "string"
                    },
                    "registration": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    },
                    "reportStatus": {
                      "type": "string"
                    },
                    "injuriesOnboard": {
                      "type": "integer"
                    },
                    "injuriesOnGround": {},
                    "highestInjuryLevel": {
                      "type": "string"
                    }
                  }
                }
              },
              "query": {
                "type": "object",
                "properties": {
                  "limit": {
                    "type": "integer"
                  },
                  "registration": {
                    "type": "string"
                  }
                }
              },
              "total": {
                "type": "integer"
              },
              "source": {
                "type": "object",
                "properties": {
                  "provider": {
                    "type": "string"
                  }
                }
              },
              "truncated": {
                "type": "boolean"
              }
            }
          },
          "example": {
            "count": 1,
            "items": [
              {
                "city": "Cleburne",
                "make": [
                  "Cessna"
                ],
                "mkey": "203161",
                "model": [
                  "172"
                ],
                "state": "Texas",
                "country": "United States",
                "eventDate": "2026-06-09T21:20:00Z",
                "eventType": "Accident",
                "reportUrl": "https://data.ntsb.gov/carol-main-public/basic-public/event/203161?type=Aviation",
                "ntsbNumber": "WPR26LA215",
                "reportType": "Prelim",
                "registration": [
                  "N1330Y"
                ],
                "reportStatus": "In work",
                "injuriesOnboard": 0,
                "injuriesOnGround": null,
                "highestInjuryLevel": "None"
              }
            ],
            "query": {
              "limit": 5,
              "registration": "N1330Y"
            },
            "total": 1,
            "source": {
              "provider": "NTSB — National Transportation Safety Board (CAROL)"
            },
            "truncated": false
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "queryParams"
            ],
            "properties": {
              "type": {
                "const": "http"
              },
              "method": {
                "const": "GET"
              },
              "queryParams": {
                "properties": {
                  "city": {
                    "type": "string",
                    "description": "Event city (partial match)."
                  },
                  "make": {
                    "type": "string",
                    "description": "Aircraft make (partial match), e.g. Cessna."
                  },
                  "limit": {
                    "type": "integer",
                    "description": "Max records to return (1-100, default 25)."
                  },
                  "model": {
                    "type": "string",
                    "description": "Aircraft model (partial match), e.g. 172."
                  },
                  "state": {
                    "type": "string",
                    "description": "US state, 2-letter code (TX) or full name."
                  },
                  "dateTo": {
                    "type": "string",
                    "description": "Latest event date, YYYY-MM-DD."
                  },
                  "dateFrom": {
                    "type": "string",
                    "description": "Earliest event date, YYYY-MM-DD."
                  },
                  "registration": {
                    "type": "string",
                    "description": "Aircraft registration / N-number (partial match), e.g. N1330Y."
                  }
                }
              }
            }
          },
          "output": {
            "type": "object",
            "properties": {
              "count": {
                "type": "integer"
              },
              "items": {
                "type": "array",
                "items": {
                  "type": "object",
                  "properties": {
                    "city": {
                      "type": "string"
                    },
                    "make": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    },
                    "mkey": {
                      "type": "string"
                    },
                    "model": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    },
                    "state": {
                      "type": "string"
                    },
                    "country": {
                      "type": "string"
                    },
                    "eventDate": {
                      "type": "string"
                    },
                    "eventType": {
                      "type": "string"
                    },
                    "reportUrl": {
                      "type": "string"
                    },
                    "ntsbNumber": {
                      "type": "string"
                    },
                    "reportType": {
                      "type": "string"
                    },
                    "registration": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    },
                    "reportStatus": {
                      "type": "string"
                    },
                    "injuriesOnboard": {
                      "type": "integer"
                    },
                    "injuriesOnGround": {},
                    "highestInjuryLevel": {
                      "type": "string"
                    }
                  }
                }
              },
              "query": {
                "type": "object",
                "properties": {
                  "limit": {
                    "type": "integer"
                  },
                  "registration": {
                    "type": "string"
                  }
                }
              },
              "total": {
                "type": "integer"
              },
              "source": {
                "type": "object",
                "properties": {
                  "provider": {
                    "type": "string"
                  }
                }
              },
              "truncated": {
                "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.

0.0012USDC≈ $0.0012 USD
on Base · exact scheme

Pay 0.0012 USDC on Base to 0x2b6D…C32C5. The signed payment is good for 1 minute.

Paid to
0x2b6D…C32C5
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
1200 smallest units
1200units
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
TW6nta…cyWhn
Token contract
EPjFWd…TDt1v
Payment window
1 minute
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
    "amount": "1200",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "name": "USDC",
      "version": "1",
      "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
    },
    "payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
    "amount": "1200",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "limit": 5,
          "registration": "N1330Y"
        }
      },
      "output": {
        "type": "json",
        "schema": {
          "type": "object",
          "properties": {
            "count": {
              "type": "integer"
            },
            "items": {
              "type": "array",
              "items": {
                "type": "object",
                "properties": {
                  "city": {
                    "type": "string"
                  },
                  "make": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    }
                  },
                  "mkey": {
                    "type": "string"
                  },
                  "model": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    }
                  },
                  "state": {
                    "type": "string"
                  },
                  "country": {
                    "type": "string"
                  },
                  "eventDate": {
                    "type": "string"
                  },
                  "eventType": {
                    "type": "string"
                  },
                  "reportUrl": {
                    "type": "string"
                  },
                  "ntsbNumber": {
                    "type": "string"
                  },
                  "reportType": {
                    "type": "string"
                  },
                  "registration": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    }
                  },
                  "reportStatus": {
                    "type": "string"
                  },
                  "injuriesOnboard": {
                    "type": "integer"
                  },
                  "injuriesOnGround": {},
                  "highestInjuryLevel": {
                    "type": "string"
                  }
                }
              }
            },
            "query": {
              "type": "object",
              "properties": {
                "limit": {
                  "type": "integer"
                },
                "registration": {
                  "type": "string"
                }
              }
            },
            "total": {
              "type": "integer"
            },
            "source": {
              "type": "object",
              "properties": {
                "provider": {
                  "type": "string"
                }
              }
            },
            "truncated": {
              "type": "boolean"
            }
          }
        },
        "example": {
          "count": 1,
          "items": [
            {
              "city": "Cleburne",
              "make": [
                "Cessna"
              ],
              "mkey": "203161",
              "model": [
                "172"
              ],
              "state": "Texas",
              "country": "United States",
              "eventDate": "2026-06-09T21:20:00Z",
              "eventType": "Accident",
              "reportUrl": "https://data.ntsb.gov/carol-main-public/basic-public/event/203161?type=Aviation",
              "ntsbNumber": "WPR26LA215",
              "reportType": "Prelim",
              "registration": [
                "N1330Y"
              ],
              "reportStatus": "In work",
              "injuriesOnboard": 0,
              "injuriesOnGround": null,
              "highestInjuryLevel": "None"
            }
          ],
          "query": {
            "limit": 5,
            "registration": "N1330Y"
          },
          "total": 1,
          "source": {
            "provider": "NTSB — National Transportation Safety Board (CAROL)"
          },
          "truncated": false
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "queryParams"
          ],
          "properties": {
            "type": {
              "const": "http"
            },
            "method": {
              "const": "GET"
            },
            "queryParams": {
              "properties": {
                "city": {
                  "type": "string",
                  "description": "Event city (partial match)."
                },
                "make": {
                  "type": "string",
                  "description": "Aircraft make (partial match), e.g. Cessna."
                },
                "limit": {
                  "type": "integer",
                  "description": "Max records to return (1-100, default 25)."
                },
                "model": {
                  "type": "string",
                  "description": "Aircraft model (partial match), e.g. 172."
                },
                "state": {
                  "type": "string",
                  "description": "US state, 2-letter code (TX) or full name."
                },
                "dateTo": {
                  "type": "string",
                  "description": "Latest event date, YYYY-MM-DD."
                },
                "dateFrom": {
                  "type": "string",
                  "description": "Earliest event date, YYYY-MM-DD."
                },
                "registration": {
                  "type": "string",
                  "description": "Aircraft registration / N-number (partial match), e.g. N1330Y."
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-06-17 21:45Z
Last indexed by Roundhouse
2026-07-17 19:20Z
Last enriched (probe, favicon, geo)
2026-09-21 01:45Z
x402 version
2
Max timeout
60s
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

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. 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 2s 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=2s'
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://2s.io/api/aviation/accidents, 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.