Api Endpoint

bluepages.fyi - Crypto Address ↔ Identity Lookup

Check if an address or identity exists in database. Use ?address=0x... or ?identity=@handle (works for Twitter, email, any username)

Open interactive test console

Offering

Provider: bluepages.fyi
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Security
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://bluepages.fyi/check
MIME type: application/json
First seen: 2026-10-16T02:01:31.612Z
Last seen: 2026-11-02T07:09:15.691Z
Tags: Search, Utility

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.001 USDC
Atomic price: 1000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "payTo": "0xc21bDbba05d3662f0F63AC6d209C6cb17E61aAD3"
  }
]

Observed health

Status: Healthy
Latest latency: 244 ms
Average latency: 682 ms
HTTP status: 402
Last checked: 2026-11-02T07:09:15.687Z
Reachability: 100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "address": {
          "type": "string",
          "description": "Cryptocurrency address to check"
        },
        "identity": {
          "type": "string",
          "description": "Username/handle to check (Twitter, email, etc.)"
        }
      },
      "required": []
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output 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": [],
          "properties": {
            "address": {
              "type": "string",
              "description": "Cryptocurrency address to check"
            },
            "identity": {
              "type": "string",
              "description": "Username/handle to check (Twitter, email, etc.)"
            }
          }
        }
      },
      "additionalProperties": false
    },
    "output": {
      "type": "object",
      "required": [
        "type"
      ],
      "properties": {
        "type": {
          "type": "string"
        },
        "example": {
          "type": "object",
          "properties": {
            "types": {
              "type": "array",
              "description": "Types of identities found (twitter, farcaster, email)"
            },
            "exists": {
              "type": "boolean",
              "description": "Whether data exists"
            }
          }
        }
      }
    }
  }
}