Roundhouse

Web Search for AI Agents

Deploy serverless functions globally in seconds. No cold starts, 330+ cities, infinite concurrency, and pay only for CPU time. Support for JavaScript, TypeScript, Python, and Rust.

SearchLiveeip155:8453Exactvia cdp
https://agent-search.centorprat.workers.dev/search
SearchWeb-searchSerpAgentsExa-alternative
Settlements · 30d
592
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$14.47
Verified settled volume
592 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0060
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-25 19:40Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x8d38D6026cf3A9805DE9c5F0611ceE95B532B120

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 required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x8d38D6026cf3A9805DE9c5F0611ceE95B532B120",
      "amount": "6000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x8d38D6026cf3A9805DE9c5F0611ceE95B532B120",
      "amount": "6000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
      },
      "payTo": "3644DrcePengCVjznEa59Dm7Mu7Acr522NvYyapHRHQh",
      "amount": "6000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://agent-search.centorprat.workers.dev/search",
    "tags": [
      "search",
      "web-search",
      "serp",
      "agents",
      "exa-alternative"
    ],
    "mimeType": "application/json",
    "description": "Web search API for AI agents, an Exa / Tavily alternative that costs less than both: Google-quality results re-ranked for authority (primary sources first), merged with papers (arXiv, Semantic Scholar), GitHub and news when the query needs them. Category (news, research paper, github, financial, company, pdf, docs), include/exclude domains, country, language, city, freshness, private mode. Each result: domain authority rank and type. ~1.7 s.",
    "serviceName": "Web Search for AI Agents"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "query": "x402 payment protocol",
            "numResults": 5
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "count": 5,
            "query": "x402 payment protocol",
            "results": [
              {
                "url": "https://x402.org/",
                "type": "web",
                "score": 2.1,
                "title": "x402",
                "domain": "x402.org",
                "snippet": "...",
                "position": 1,
                "authorityRank": null
              }
            ]
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "required": [
                  "query"
                ],
                "properties": {
                  "time": {
                    "type": "string",
                    "description": "freshness: hour, day, week, month or year (optional)"
                  },
                  "query": {
                    "type": "string",
                    "description": "What to search for"
                  },
                  "country": {
                    "type": "string",
                    "description": "2-letter country the results are for: us, gb, de, es, fr, in, br, ... (default us)"
                  },
                  "private": {
                    "type": "boolean",
                    "description": "true = the query is not logged or cached (default false)"
                  },
                  "category": {
                    "type": "string",
                    "description": "news | research paper | github | financial | company | pdf | docs"
                  },
                  "language": {
                    "type": "string",
                    "description": "result language, e.g. en, es, de"
                  },
                  "location": {
                    "type": "string",
                    "description": "city or region, e.g. Austin, Texas"
                  },
                  "numResults": {
                    "type": "integer",
                    "description": "1-10 (default 10)"
                  },
                  "excludeDomains": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    },
                    "description": "never these domains"
                  },
                  "includeDomains": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    },
                    "description": "only these domains"
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "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.

0.006USDC≈ $0.006 USD
on Base · exact scheme

Pay 0.006 USDC on Base to 0x8d38…2B120. The signed payment is good for 5 minutes.

Paid to
0x8d38…2B120
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
6000 smallest units
6000units
on Polygon · 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
0x8d38…2B120
Token contract
0x3c49…c3359
Payment window
5 minutes
6000units
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
3644Dr…HRHQh
Token contract
EPjFWd…TDt1v
Payment window
5 minutes
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x8d38D6026cf3A9805DE9c5F0611ceE95B532B120",
    "amount": "6000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x8d38D6026cf3A9805DE9c5F0611ceE95B532B120",
    "amount": "6000",
    "scheme": "exact",
    "network": "eip155:137",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
    },
    "payTo": "3644DrcePengCVjznEa59Dm7Mu7Acr522NvYyapHRHQh",
    "amount": "6000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "query": "x402 payment protocol",
          "numResults": 5
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "count": 5,
          "query": "x402 payment protocol",
          "results": [
            {
              "url": "https://x402.org/",
              "type": "web",
              "score": 2.1,
              "title": "x402",
              "domain": "x402.org",
              "snippet": "...",
              "position": 1,
              "authorityRank": null
            }
          ]
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "required": [
                "query"
              ],
              "properties": {
                "time": {
                  "type": "string",
                  "description": "freshness: hour, day, week, month or year (optional)"
                },
                "query": {
                  "type": "string",
                  "description": "What to search for"
                },
                "country": {
                  "type": "string",
                  "description": "2-letter country the results are for: us, gb, de, es, fr, in, br, ... (default us)"
                },
                "private": {
                  "type": "boolean",
                  "description": "true = the query is not logged or cached (default false)"
                },
                "category": {
                  "type": "string",
                  "description": "news | research paper | github | financial | company | pdf | docs"
                },
                "language": {
                  "type": "string",
                  "description": "result language, e.g. en, es, de"
                },
                "location": {
                  "type": "string",
                  "description": "city or region, e.g. Austin, Texas"
                },
                "numResults": {
                  "type": "integer",
                  "description": "1-10 (default 10)"
                },
                "excludeDomains": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  },
                  "description": "never these domains"
                },
                "includeDomains": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  },
                  "description": "only these domains"
                }
              }
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-25 19:40Z
Last indexed by Roundhouse
2026-10-26 14:50Z
Last enriched (probe, favicon, geo)
2026-10-26 12:15Z
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

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 Web Search for AI Agents 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=Web%20Search%20for%20AI%20Agents'
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-search.centorprat.workers.dev/search, 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. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.