B3

B3 Blockscout/search API

Blockscout search functionality

GitHub OpenAPI

Operations 2

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/b3/refs/heads/main/openapi/b3-blockscout-search-api-openapi.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/b3-blockscout-search-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

b3-blockscout-search-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  description: Cached proxy layer for multiple blockchain APIs with 24-hour caching and automatic fallback across chains. Supports both Blockscout and ThirdWeb Insights APIs. Add ?mintlify parameter for Mintlify-compatible version.
  version: 1.0.0
  title: B3 Data API - Multi-Chain Data Blockscout/search API
  contact:
    name: B3 Team
    url: https://b3.fun
  license:
    name: Apache 2.0
    url: http://www.apache.org/licenses/LICENSE-2.0.html
servers:
- url: https://data-api.b3.fun/
  description: B3 Data API - Multi-Chain Proxy
tags:
- name: blockscout/search
  description: Blockscout search functionality
paths:
  /blockscout/search:
    get:
      parameters:
      - in: query
        name: q
        schema:
          type: string
          example: USDT
      summary: Search
      operationId: search
      responses:
        '200':
          description: Search Response
          content:
            application/json:
              schema:
                type: object
                required:
                - items
                - next_page_params
                properties:
                  items:
                    type: array
                    items:
                      oneOf:
                      - $ref: '#/components/schemas/SearchResultToken'
                      - $ref: '#/components/schemas/SearchResultAddressOrContract'
                      - $ref: '#/components/schemas/SearchResultBlock'
                      - $ref: '#/components/schemas/SearchResultTransaction'
                  next_page_params:
                    type: object
                    example:
                      address_hash: '0x052Ad78E3aA0b0F2D3912FD3b50a9a289CF2f7Aa'
                      block_hash: null
                      holder_count: 548
                      inserted_at: '2021-12-07T08:39:01.062253Z'
                      item_type: token
                      items_count: 50
                      name: RealToken S 13245 Monica St Detroit MI
                      q: '1'
                      transaction_hash: null
        '400':
          description: Bad Input Parameter
      tags:
      - blockscout/search
  /blockscout/search/check-redirect:
    get:
      parameters:
      - in: query
        name: q
        schema:
          type: string
          example: USDT
      summary: Search Redirect
      operationId: search redirect
      responses:
        '200':
          description: Search Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SearchResultRedirect'
        '400':
          description: Bad Input Parameter
      tags:
      - blockscout/search
components:
  schemas:
    SearchResultAddressOrContract:
      required:
      - address
      - is_smart_contract_verified
      - name
      - type
      - url
      properties:
        address:
          type: string
          example: '0xe2FBdeADC82c71C1b8bFf9CA4f9E7666224A362c'
        is_smart_contract_verified:
          type: boolean
          example: true
        name:
          type: string
          example: Name
        type:
          type: string
          example: address|contract
        url:
          type: string
          example: /xdai/mainnet/address/0xc1c1031e4A44B98707203480029e6576CB3267e3
    SearchResultRedirect:
      required:
      - parameter
      - redirect
      - type
      properties:
        parameter:
          type: string
          example: '0xEb533ee5687044E622C69c58B1B12329F56eD9ad'
        redirect:
          type: boolean
        type:
          type: string
          example: address | block | transaction
    SearchResultToken:
      required:
      - address
      - address_url
      - exchange_rate
      - icon_url
      - is_smart_contract_verified
      - name
      - symbol
      - token_type
      - token_url
      - total_supply
      - type
      properties:
        address:
          type: string
          example: '0xdAC17F958D2ee523a2206206994597C13D831ec7'
        address_url:
          type: string
          example: /address/0xdAC17F958D2ee523a2206206994597C13D831ec7
        exchange_rate:
          type: string
          example: '0.999813'
        icon_url:
          type: string
          example: https://raw.githubusercontent.com/trustwallet/assets/master/blockchains/ethereum/assets/0xdAC17F958D2ee523a2206206994597C13D831ec7/logo.png
        is_smart_contract_verified:
          type: boolean
          example: true
        name:
          type: string
          example: Tether USD
        symbol:
          type: string
          example: USDT
        token_type:
          type: string
          example: ERC-20
        token_url:
          type: string
          example: /token/0xdAC17F958D2ee523a2206206994597C13D831ec7
        total_supply:
          type: string
          example: '39030615894320966'
        type:
          type: string
          example: token
    SearchResultBlock:
      required:
      - block_hash
      - block_number
      - timestamp
      - type
      - url
      properties:
        block_hash:
          type: string
          example: '0xba83e9ba0b43e8d112a07fdab08d53f473d2b7fb0e585bd437ae739933db203e'
        block_number:
          type: integer
          example: 24816691
        timestamp:
          type: string
          example: '2022-10-31T07:18:05.000000Z'
        type:
          type: string
          example: block
        url:
          type: string
          example: /xdai/mainnet/block/0xba83e9ba0b43e8d112a07fdab08d53f473d2b7fb0e585bd437ae739933db203e
    SearchResultTransaction:
      required:
      - timestamp
      - transaction_hash
      - type
      - url
      properties:
        timestamp:
          type: string
          example: '2022-10-31T07:18:05.000000Z'
        transaction_hash:
          type: string
          example: '0xe38c6772f33edfbd218f59853befe18391cb786f911fb6c0b00ed6dd72ef6e69'
        type:
          type: string
          example: transaction
        url:
          type: string
          example: /xdai/mainnet/tx/0xe38c6772f33edfbd218f59853befe18391cb786f911fb6c0b00ed6dd72ef6e69
  securitySchemes:
    clientId:
      type: apiKey
      in: header
      name: x-client-id
      description: thirdweb client ID in headers
    secretKey:
      type: apiKey
      in: header
      name: x-secret-key
      description: thirdweb secret key in headers
    dashboard:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: thirdweb JWT + Client ID
    clientId-query:
      type: apiKey
      in: query
      name: clientId
      description: thirdweb client ID in query params
x-proxy-info:
  supported-chains:
  - chainId: 243
    name: Reach Testnet
    network: reach-testnet
    apiUrl: https://reach-testnet.explorer.caldera.xyz/api/v2
  - chainId: 1993
    name: B3 Testnet
    network: b3-testnet
    apiUrl: https://sepolia.explorer.b3.fun/api/v2
  - chainId: 4224
    name: Arpachain
    network: arpachain
    apiUrl: https://arpachain.calderaexplorer.xyz/api/v2
  - chainId: 8333
    name: B3 Mainnet
    network: b3
    apiUrl: https://blockscout.b3.fun/api/v2
  - chainId: 19934
    name: B4 Testnet
    network: b4-testnet
    apiUrl: https://b4-testnet.explorer.caldera.xyz/api/v2
  - chainId: 10211403
    name: GLHF Testnet
    network: glhf-testnet
    apiUrl: https://glhf-testnet.explorer.caldera.xyz/api/v2
  supported-services:
  - name: blockscout
    path: /blockscout/*
    description: Blockchain explorer API with multi-chain fallback
  - name: thirdweb-insights
    path: /insights/*
    description: ThirdWeb Insights API for chain analytics
  default-chain: 8333
  cache-duration: 24 hours
  cache-strategy: KV store
  fallback-strategy: 'Blockscout: Query default chain first, then all chains in parallel if no results. ThirdWeb: Direct chain query only.'