Roundhouse AI

402utils.com

Micro API utilities for AI agents, priced per call and paid in USDC over the x402 protocol. PDF, screenshot, OG-image and more — no signup, no keys.

Tradingofflineeip155:8453Exactvia cdp
https://402utils.com/v1/x402-probe
Settlements · 30d
160↓ 25%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$1.69
Verified settled volume
705 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0020
Listed price
As published in the catalog. Always read the live 402 before paying.
4
Calls · 30d
Upstream's own call count for this endpoint, not ours.
3
Unique payers · 30d
Last called 2026-07-05 19:16Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xc55A2D530b53CBaD1001e4AfD4720B7E71f9C291

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.

{
  "hint": "This endpoint is paid via the x402 protocol. Decode the base64 PAYMENT-REQUIRED response header for payment requirements, or retry with an x402 v2 client.",
  "error": "payment_required"
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.002USDC≈ $0.002 USD
on Base · exact scheme

Pay 0.002 USDC on Base to 0xc55A…9C291. The signed payment is good for 1 minute.

Paid to
0xc55A…9C291
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
2000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xc55A2D530b53CBaD1001e4AfD4720B7E71f9C291",
    "amount": "2000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "url": "https://402utils.com/v1/rss-to-json"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "isX402": true,
          "prices": [
            {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "payTo": "0x209693Bc6afc0C5328bA36FaF03C514EF312287C",
              "amount": "2000",
              "scheme": "exact",
              "network": "eip155:8453",
              "maxTimeoutSeconds": 60
            }
          ],
          "status": 402,
          "resource": "https://402utils.com/v1/rss-to-json",
          "description": "Fetch an RSS 2.0 or Atom feed and return clean JSON.",
          "x402Version": 2
        }
      }
    },
    "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"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "url"
              ],
              "properties": {
                "url": {
                  "type": "string",
                  "format": "uri",
                  "description": "Public http(s) URL of the endpoint to probe (required)."
                }
              },
              "description": "Query string only."
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "required": [
                "isX402",
                "status"
              ],
              "properties": {
                "isX402": {
                  "type": "boolean",
                  "description": "True when the target answered 402 with decodable x402 payment requirements."
                },
                "prices": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "properties": {
                      "asset": {
                        "type": "string",
                        "description": "Asset contract address or identifier."
                      },
                      "payTo": {
                        "type": "string"
                      },
                      "amount": {
                        "type": "string",
                        "description": "Price in atomic units of the asset (e.g. 6-decimal USDC)."
                      },
                      "scheme": {
                        "type": "string"
                      },
                      "network": {
                        "type": "string",
                        "description": "Network id, e.g. eip155:8453 (v2) or base-sepolia (v1)."
                      },
                      "maxTimeoutSeconds": {
                        "type": "number"
                      }
                    }
                  },
                  "description": "One entry per accepts[] payment option; fields are copied only when advertised."
                },
                "reason": {
                  "enum": [
                    "undecodable_402",
                    "too_many_redirects"
                  ],
                  "type": "string",
                  "description": "Why isX402 is false despite an unusual (but definitive) response."
                },
                "status": {
                  "type": "integer",
                  "description": "HTTP status the target answered with."
                },
                "resource": {
                  "type": "string",
                  "description": "Resource URL advertised in the payment payload."
                },
                "discovery": {
                  "type": "object",
                  "description": "Bazaar/discovery extension object, passed through verbatim when present."
                },
                "description": {
                  "type": "string",
                  "description": "Human description advertised by the target."
                },
                "x402Version": {
                  "type": "integer",
                  "description": "x402 protocol version (2 = PAYMENT-REQUIRED header payload, 1 = 402 body payload)."
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-07-05 19:16Z
Last indexed by Roundhouse
2026-07-25 00:00Z
Last enriched (probe, favicon, geo)
2026-09-14 05:45Z
x402 version
2
Max timeout
60s
Liveness probe
HTTP 0
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 402utils.com 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=402utils.com'
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://402utils.com/v1/x402-probe, 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.