Roundhouse

Blackbird API

Pay-per-call access to the Blackbird restaurant network via Flynet — restaurants, locations, check-ins, challenges, and specials over x402 and MPP. No accounts, no API keys.

OtherLiveeip155:8453Exactvia cdp
https://the-stables-blackbird-api.vercel.app/api/payment_intents/:id/refund
RestaurantsDiningBlackbirdFlynetCheck-ins
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 10 snapshots so far.
$0.21
Verified settled volume
41 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
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 2026-08-03 18:56Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xcb140ce79474d917db4152303db4d28fe27286bf

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.

Accepts

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

0.005USDC≈ $0.005 USD
on Base · exact scheme

Pay 0.005 USDC on Base to 0xcb14…286bf. The signed payment is good for 5 minutes.

Paid to
0xcb14…286bf
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
5000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xcb140ce79474d917db4152303db4d28fe27286bf",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {},
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "pathParams": {
          "id": "Unique identifier (UUID format)"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "properties": {}
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        }
      }
    },
    "routeTemplate": "/api/payment_intents/:id/refund"
  },
  "sign-in-with-x": {
    "info": {
      "uri": "https://the-stables-blackbird-api.vercel.app/api/payment_intents/7c65ff1b-6282-4261-ae34-a86ecf855786/refund",
      "nonce": "31b036ef2e2d4296004d035a7680d604",
      "domain": "the-stables-blackbird-api.vercel.app",
      "version": "1",
      "issuedAt": "2026-08-03T18:56:29.064Z",
      "resources": [
        "https://the-stables-blackbird-api.vercel.app/api/payment_intents/7c65ff1b-6282-4261-ae34-a86ecf855786/refund"
      ]
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "domain",
        "address",
        "uri",
        "version",
        "chainId",
        "type",
        "nonce",
        "issuedAt",
        "signature"
      ],
      "properties": {
        "uri": {
          "type": "string",
          "format": "uri"
        },
        "type": {
          "type": "string"
        },
        "nonce": {
          "type": "string"
        },
        "domain": {
          "type": "string"
        },
        "address": {
          "type": "string"
        },
        "chainId": {
          "type": "string"
        },
        "version": {
          "type": "string"
        },
        "issuedAt": {
          "type": "string",
          "format": "date-time"
        },
        "notBefore": {
          "type": "string",
          "format": "date-time"
        },
        "requestId": {
          "type": "string"
        },
        "resources": {
          "type": "array",
          "items": {
            "type": "string",
            "format": "uri"
          }
        },
        "signature": {
          "type": "string"
        },
        "statement": {
          "type": "string"
        },
        "expirationTime": {
          "type": "string",
          "format": "date-time"
        }
      }
    },
    "supportedChains": [
      {
        "type": "eip191",
        "chainId": "eip155:8453"
      }
    ]
  }
}

Provenance

Seen in the source catalog
2026-08-03 18:56Z
Last indexed by Roundhouse
2026-09-02 18:50Z
Last enriched (probe, favicon, geo)
2026-09-14 01:15Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 404
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. 10 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 Blackbird API 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=Blackbird%20API'
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://the-stables-blackbird-api.vercel.app/api/payment_intents/:id/refund, 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.