Roundhouse AI

x402.blocknotify.com

Browse 32K+ providers and 98K+ paid API endpoints. Connect a wallet, pay-per-call in USDC on Base. No keys, no subscriptions. Powered by the x402 protocol.

DataLiveeip155:8453Exactvia cdp
https://x402.blocknotify.com/v1/resolve-token
Activity
—
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record.
$0.01
Verified settled volume
2 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 2026-06-18 04:43Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xD1C1931e3740371033c994df775bdE553A99366F

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 0xD1C1…9366F. The signed payment is good for 5 minutes.

Paid to
0xD1C1…9366F
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": "0xD1C1931e3740371033c994df775bdE553A99366F",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "chain": "ethereum",
          "symbol": "UNI"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "ok": true,
          "token": {
            "name": "Uniswap",
            "chain": "ethereum",
            "source": "registry",
            "symbol": "UNI",
            "address": "0x1f9840a85d5af5bf1d1762f925bdaddc4201f984",
            "decimals": 18
          },
          "candidates": []
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "anyOf": [
                {
                  "required": [
                    "symbol"
                  ]
                },
                {
                  "required": [
                    "address"
                  ]
                }
              ],
              "properties": {
                "chain": {
                  "enum": [
                    "ethereum",
                    "polygon",
                    "arbitrum",
                    "optimism",
                    "base"
                  ],
                  "type": "string",
                  "description": "Target EVM chain. The merchant maps this to the appropriate RPC for simulation."
                },
                "symbol": {
                  "type": "string",
                  "maxLength": 20,
                  "minLength": 1,
                  "description": "Token ticker (e.g. \"USDC\", \"UNI\"). Resolved via local registry first, then BlockNotify."
                },
                "address": {
                  "type": "string",
                  "pattern": "^0x[a-fA-F0-9]{40}$",
                  "description": "ERC-20 contract address. Use to resolve a specific token or to disambiguate when a symbol is shared."
                }
              }
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "required": [
                "ok",
                "token"
              ],
              "properties": {
                "ok": {
                  "type": "boolean",
                  "const": true
                },
                "token": {
                  "type": "object",
                  "required": [
                    "chain",
                    "address",
                    "decimals",
                    "symbol",
                    "source"
                  ],
                  "properties": {
                    "name": {
                      "type": "string"
                    },
                    "chain": {
                      "enum": [
                        "ethereum",
                        "polygon",
                        "arbitrum",
                        "optimism",
                        "base"
                      ],
                      "type": "string",
                      "description": "Target EVM chain. The merchant maps this to the appropriate RPC for simulation."
                    },
                    "source": {
                      "enum": [
                        "registry",
                        "blocknotify",
                        "user"
                      ],
                      "type": "string",
                      "description": "Resolution provenance: registry = local hardcoded list, blocknotify = remote token database, user = caller-supplied tokenAddress + decimals."
                    },
                    "symbol": {
                      "type": "string"
                    },
                    "address": {
                      "type": "string",
                      "pattern": "^0x[a-fA-F0-9]{40}$",
                      "description": "Canonical ERC-20 contract address."
                    },
                    "decimals": {
                      "type": "integer",
                      "maximum": 36,
                      "minimum": 0
                    },
                    "ambiguous": {
                      "type": "object",
                      "description": "Set when the symbol matched multiple tokens; documents the count and the picked candidate id.",
                      "additionalProperties": true
                    }
                  },
                  "description": "Normalized token identity. `source` indicates whether the answer came from the local hardcoded registry or the BlockNotify token database."
                },
                "candidates": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "properties": {
                      "id": {
                        "type": "string"
                      },
                      "name": {
                        "type": "string"
                      },
                      "symbol": {
                        "type": "string"
                      },
                      "address": {
                        "type": "string",
                        "pattern": "^0x[a-fA-F0-9]{40}$",
                        "description": "Candidate token contract address."
                      }
                    }
                  },
                  "description": "Other tokens matching the symbol on the same chain (only present for ambiguous symbol lookups)."
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-06-18 04:43Z
Last indexed by Roundhouse
2026-07-09 13:30Z
Last enriched (probe, favicon, geo)
2026-09-22 17:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 400
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

Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record. 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 x402.blocknotify.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=x402.blocknotify.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://x402.blocknotify.com/v1/resolve-token, 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.