2s

Name: 2s
Price: 0.00216 USDC
Availability: InStock

Certificate Transparency recon for a domain — discover its subdomains and issued certificates from public CT logs (passive attack-surface mapping). Pass domain. Returns the deduplicated set of subdomains seen across all certs (subdomains + subdomainCount), and the certificates (issuer, validity window, SAN dns names), most recent first. Sourced from SSLMate certSpotter (primary) with a crt.sh fallback — keyless. Live CT-log data over a huge append-only dataset an LLM cannot enumerate. For external attack-surface discovery, shadow-IT/subdomain inventory, and certificate monitoring. Note: CT shows names that ever appeared in a cert, not necessarily live hosts.

InferenceLiveeip155:8453Exactvia cdp

https://2s.io/api/domain/ct-logs

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.

$0.0022

Listed price

As published in the catalog. Always read the live 402 before paying.

Calls · 30d

Upstream's own call count for this endpoint, not ours.

Unique payers · 30d

Last called 2026-06-17 21:46Z

—

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": "5400",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "name": "USDC",
        "version": "1",
        "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
      },
      "payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
      "amount": "5400",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://2s.io/api/domain/ct-logs",
    "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": "Certificate Transparency recon for a domain — discover its subdomains and issued certificates from public CT logs (passive attack-surface mapping). Pass domain. Returns the deduplicated set of subdomains seen across all certs (subdomains + subdomainCount), and the certificates (issuer, validity window, SAN dns names), most recent first. Sourced from SSLMate certSpotter (primary) with a crt.sh fallback — keyless. Live CT-log data over a huge append-only dataset an LLM cannot enumerate. For external attack-surface discovery, shadow-IT/subdomain inventory, and certificate monitoring. Note: CT shows names that ever appeared in a cert, not necessarily live hosts.",
    "serviceName": "2s"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "limit": 50,
            "domain": "example.com"
          }
        },
        "output": {
          "type": "json",
          "schema": {
            "type": "object",
            "properties": {
              "ok": {
                "type": "boolean"
              },
              "items": {
                "type": "array",
                "items": {
                  "type": "object",
                  "properties": {
                    "certs": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "issuer": {
                            "type": "string"
                          },
                          "dnsNames": {
                            "type": "array",
                            "items": {
                              "type": "string"
                            }
                          },
                          "notAfter": {
                            "type": "string"
                          },
                          "notBefore": {
                            "type": "string"
                          }
                        }
                      }
                    },
                    "domain": {
                      "type": "string"
                    },
                    "provider": {
                      "type": "string"
                    },
                    "certCount": {
                      "type": "integer"
                    },
                    "truncated": {
                      "type": "boolean"
                    },
                    "subdomains": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    },
                    "subdomainCount": {
                      "type": "integer"
                    }
                  }
                }
              },
              "total": {
                "type": "integer"
              },
              "source": {
                "type": "object",
                "properties": {
                  "url": {
                    "type": "string"
                  },
                  "license": {
                    "type": "string"
                  },
                  "provider": {
                    "type": "string"
                  }
                }
              }
            }
          },
          "example": {
            "ok": true,
            "items": [
              {
                "certs": [
                  {
                    "issuer": "C=US, O=DigiCert Inc",
                    "dnsNames": [
                      "example.com",
                      "www.example.com"
                    ],
                    "notAfter": "2027-01-01T00:00:00Z",
                    "notBefore": "2026-01-01T00:00:00Z"
                  }
                ],
                "domain": "example.com",
                "provider": "certspotter",
                "certCount": 12,
                "truncated": false,
                "subdomains": [
                  "example.com",
                  "www.example.com",
                  "api.example.com"
                ],
                "subdomainCount": 3
              }
            ],
            "total": 1,
            "source": {
              "url": "https://sslmate.com/ct_search_api/",
              "license": "CT log data is public; certSpotter free tier is keyless (rate-limited).",
              "provider": "Certificate Transparency logs (SSLMate certSpotter / crt.sh)"
            }
          }
        }
      },
      "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": {
                "required": [
                  "domain"
                ],
                "properties": {
                  "limit": {
                    "type": "integer",
                    "description": "Max certs returned (1-500, default 100)."
                  },
                  "domain": {
                    "type": "string",
                    "description": "Domain to enumerate (e.g. example.com)."
                  }
                }
              }
            }
          },
          "output": {
            "type": "object",
            "properties": {
              "ok": {
                "type": "boolean"
              },
              "items": {
                "type": "array",
                "items": {
                  "type": "object",
                  "properties": {
                    "certs": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "issuer": {
                            "type": "string"
                          },
                          "dnsNames": {
                            "type": "array",
                            "items": {
                              "type": "string"
                            }
                          },
                          "notAfter": {
                            "type": "string"
                          },
                          "notBefore": {
                            "type": "string"
                          }
                        }
                      }
                    },
                    "domain": {
                      "type": "string"
                    },
                    "provider": {
                      "type": "string"
                    },
                    "certCount": {
                      "type": "integer"
                    },
                    "truncated": {
                      "type": "boolean"
                    },
                    "subdomains": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    },
                    "subdomainCount": {
                      "type": "integer"
                    }
                  }
                }
              },
              "total": {
                "type": "integer"
              },
              "source": {
                "type": "object",
                "properties": {
                  "url": {
                    "type": "string"
                  },
                  "license": {
                    "type": "string"
                  },
                  "provider": {
                    "type": "string"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "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.

0.00216USDC≈ $0.00216 USD

on Base · exact scheme

Pay 0.00216 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: 2160 smallest units

2160units

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": "2160",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "name": "USDC",
      "version": "1",
      "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
    },
    "payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
    "amount": "2160",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "limit": 50,
          "domain": "example.com"
        }
      },
      "output": {
        "type": "json",
        "schema": {
          "type": "object",
          "properties": {
            "ok": {
              "type": "boolean"
            },
            "items": {
              "type": "array",
              "items": {
                "type": "object",
                "properties": {
                  "certs": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "properties": {
                        "issuer": {
                          "type": "string"
                        },
                        "dnsNames": {
                          "type": "array",
                          "items": {
                            "type": "string"
                          }
                        },
                        "notAfter": {
                          "type": "string"
                        },
                        "notBefore": {
                          "type": "string"
                        }
                      }
                    }
                  },
                  "domain": {
                    "type": "string"
                  },
                  "provider": {
                    "type": "string"
                  },
                  "certCount": {
                    "type": "integer"
                  },
                  "truncated": {
                    "type": "boolean"
                  },
                  "subdomains": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    }
                  },
                  "subdomainCount": {
                    "type": "integer"
                  }
                }
              }
            },
            "total": {
              "type": "integer"
            },
            "source": {
              "type": "object",
              "properties": {
                "url": {
                  "type": "string"
                },
                "license": {
                  "type": "string"
                },
                "provider": {
                  "type": "string"
                }
              }
            }
          }
        },
        "example": {
          "ok": true,
          "items": [
            {
              "certs": [
                {
                  "issuer": "C=US, O=DigiCert Inc",
                  "dnsNames": [
                    "example.com",
                    "www.example.com"
                  ],
                  "notAfter": "2027-01-01T00:00:00Z",
                  "notBefore": "2026-01-01T00:00:00Z"
                }
              ],
              "domain": "example.com",
              "provider": "certspotter",
              "certCount": 12,
              "truncated": false,
              "subdomains": [
                "example.com",
                "www.example.com",
                "api.example.com"
              ],
              "subdomainCount": 3
            }
          ],
          "total": 1,
          "source": {
            "url": "https://sslmate.com/ct_search_api/",
            "license": "CT log data is public; certSpotter free tier is keyless (rate-limited).",
            "provider": "Certificate Transparency logs (SSLMate certSpotter / crt.sh)"
          }
        }
      }
    },
    "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": {
              "required": [
                "domain"
              ],
              "properties": {
                "limit": {
                  "type": "integer",
                  "description": "Max certs returned (1-500, default 100)."
                },
                "domain": {
                  "type": "string",
                  "description": "Domain to enumerate (e.g. example.com)."
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog: 2026-06-17 21:46Z
Last indexed by Roundhouse: 2026-07-17 19:20Z
Last enriched (probe, favicon, geo): 2026-09-22 03:45Z
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/domain/ct-logs, 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.