Roundhouse

URL Metadata Link Preview

URL metadata / link preview: title, description, Open Graph and Twitter tags, canonical URL, favicon, language, author/dates, RSS/Atom feeds, hreflang, robots and JSON-LD. Fast one-fetch SEO metadata. Charged only on success.

DataLiveeip155:8453Exactvia cdp
https://ryumoon-x402-tools.ryumoon.workers.dev/metadata
Link previewUrl metadataOpen graphSeoFavicon
Calls · 30d
8
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 7 snapshots so far.
$0.07
Verified settled volume
29 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0010
Listed price
As published in the catalog. Always read the live 402 before paying.
8
Calls · 30d
Upstream's own call count for this endpoint, not ours.
3
Unique payers · 30d
Last called 2026-11-06 19:05Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x6E131DA10b0D717104c491391d47c2EB0Ef01e73

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": "0x6E131DA10b0D717104c491391d47c2EB0Ef01e73",
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://ryumoon-x402-tools.ryumoon.workers.dev/metadata",
    "tags": [
      "link preview",
      "url metadata",
      "open graph",
      "seo",
      "favicon"
    ],
    "iconUrl": "https://ryumoon-x402-tools.ryumoon.workers.dev/favicon.ico",
    "mimeType": "application/json",
    "description": "URL metadata / link preview: title, description, Open Graph and Twitter tags, canonical URL, favicon, language, author/dates, RSS/Atom feeds, hreflang, robots and JSON-LD. Fast one-fetch SEO metadata. Charged only on success.",
    "serviceName": "URL Metadata Link Preview"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "url": "https://github.com"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "url": "https://github.com/",
            "feeds": [],
            "image": "https://github.githubassets.com/og.png",
            "title": "GitHub",
            "favicon": "https://github.githubassets.com/favicons/favicon.svg",
            "language": "en",
            "siteName": "GitHub",
            "openGraph": {
              "type": "object",
              "title": "GitHub"
            },
            "statusCode": 200,
            "description": "Join the world's most widely adopted developer platform...",
            "jsonLdTypes": [
              "Organization"
            ],
            "canonicalUrl": "https://github.com/"
          }
        }
      },
      "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",
                    "description": "Public http(s) URL or bare domain"
                  },
                  "jsonld": {
                    "type": "boolean",
                    "description": "Include raw JSON-LD objects (default true)"
                  }
                }
              }
            },
            "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.

0.001USDC≈ $0.001 USD
on Base · exact scheme

Pay 0.001 USDC on Base to 0x6E13…01e73. The signed payment is good for 2 minutes.

Paid to
0x6E13…01e73
USD Coin contract
0x8335…02913
Payment window
2 minutes
As published
1000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x6E131DA10b0D717104c491391d47c2EB0Ef01e73",
    "amount": "1000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "url": "https://github.com"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "url": "https://github.com/",
          "feeds": [],
          "image": "https://github.githubassets.com/og.png",
          "title": "GitHub",
          "favicon": "https://github.githubassets.com/favicons/favicon.svg",
          "language": "en",
          "siteName": "GitHub",
          "openGraph": {
            "type": "object",
            "title": "GitHub"
          },
          "statusCode": 200,
          "description": "Join the world's most widely adopted developer platform...",
          "jsonLdTypes": [
            "Organization"
          ],
          "canonicalUrl": "https://github.com/"
        }
      }
    },
    "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",
                  "description": "Public http(s) URL or bare domain"
                },
                "jsonld": {
                  "type": "boolean",
                  "description": "Include raw JSON-LD objects (default true)"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-11-06 19:05Z
Last indexed by Roundhouse
2026-11-10 10:10Z
Last enriched (probe, favicon, geo)
2026-11-06 10:15Z
x402 version
2
Max timeout
120s
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. 7 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 URL Metadata Link Preview 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=URL%20Metadata%20Link%20Preview'
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://ryumoon-x402-tools.ryumoon.workers.dev/metadata, 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.