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.
Call it yourself
curl for this page
This API
curl "https://apis.io/api/v1/apis/b3-insights-resolve-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"Discovery needs no key. Ratings and market analysis are Pro.
OpenAPI Specification
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 Insights/resolve 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: insights/resolve
description: ThirdWeb Insights ENS resolution
paths:
/insights/v1/resolve/{input}:
get:
description: Resolve
summary: Resolve
tags:
- insights/resolve
parameters:
- $ref: '#/components/parameters/input'
- name: chain
in: query
required: false
deprecated: true
description: Use chain_id instead
schema:
type: array
example:
- 20
- 56
- 1
items:
type: number
- name: chain_id
in: query
required: false
description: The chain ID(s) to request the data for. You can specify multiple chain IDs, up to a maximum of 55. Use repeated query parameters, e.g., `?chain_id=20&chain_id=56`. Optional, because a single chain can as well be specified as a subdomain
schema:
type: array
example:
- 20
- 56
- 1
items:
type: number
responses:
'200':
description: Successful response
content:
application/json:
schema:
type: object
properties:
data:
type: object
properties:
blocks:
type: array
items:
type: object
properties:
chain_id:
type: number
block_number:
type: number
block_hash:
type: string
parent_hash:
type: string
block_timestamp:
type: number
nonce:
type: string
sha3_uncles:
type: string
mix_hash:
type: string
miner:
type: string
state_root:
type: string
transactions_root:
type: string
receipts_root:
type: string
logs_bloom:
type: string
size:
type: number
extra_data:
type: string
difficulty:
type: string
total_difficulty:
type: string
transaction_count:
type: number
gas_limit:
type: number
gas_used:
type: number
withdrawals_root:
type: string
base_fee_per_gas:
type: number
required:
- chain_id
- block_number
- block_hash
- parent_hash
- block_timestamp
- nonce
- sha3_uncles
- mix_hash
- miner
- state_root
- transactions_root
- receipts_root
- logs_bloom
- size
- extra_data
- difficulty
- total_difficulty
- transaction_count
- gas_limit
- gas_used
- withdrawals_root
- base_fee_per_gas
transactions:
type: array
items:
type: object
properties:
chain_id:
type: string
block_number:
type: number
block_hash:
type: string
block_timestamp:
type: number
hash:
type: string
nonce:
type: number
transaction_index:
type: number
from_address:
type: string
to_address:
type: string
value:
type: string
gas_price:
type: string
gas:
type: number
function_selector:
type: string
data:
type: string
max_fee_per_gas:
type: string
max_priority_fee_per_gas:
type: string
transaction_type:
type: number
r:
type: string
s:
type: string
v:
type: string
access_list_json:
type: string
authorization_list_json:
type: string
contract_address:
type: string
gas_used:
type: number
cumulative_gas_used:
type: number
effective_gas_price:
type: string
blob_gas_used:
type: number
blob_gas_price:
type: string
logs_bloom:
type: string
status:
type: number
required:
- chain_id
- block_number
- block_hash
- block_timestamp
- hash
- nonce
- transaction_index
- from_address
- to_address
- value
- gas_price
- gas
- function_selector
- data
- max_fee_per_gas
- max_priority_fee_per_gas
- transaction_type
- r
- s
- v
events:
type: array
items:
type: object
properties:
chain_id:
type: string
block_number:
type: number
block_hash:
type: string
block_timestamp:
type: number
transaction_hash:
type: string
transaction_index:
type: number
log_index:
type: number
address:
type: string
data:
type: string
topics:
type: array
items:
type: string
required:
- chain_id
- block_number
- block_hash
- block_timestamp
- transaction_hash
- transaction_index
- log_index
- address
- data
- topics
address:
type: string
title: address (hex or ENS)
example: vitalik.eth
type:
type: string
enum:
- block
- transaction
- event_signature
- function_signature
- address
- contract
- unknown
required:
- type
aggregations: {}
meta:
type: object
properties:
chain_ids:
type: array
items:
type: number
address:
type: string
signature:
type: string
page:
type: number
limit_per_chain:
type: number
total_items:
type: number
total_pages:
type: number
required:
- chain_ids
- page
- limit_per_chain
- total_items
- total_pages
required:
- meta
'400':
description: Bad request
content:
application/json:
schema:
type: object
properties:
error:
type: string
required:
- error
'500':
description: Internal server error
content:
application/json:
schema:
type: object
properties:
error:
type: string
required:
- error
components:
parameters:
input:
schema:
anyOf:
- type: string
pattern: ^0x[a-fA-F0-9]{64}$
title: hash
example: '0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984'
- type: string
pattern: ^0x[a-fA-F0-9]{8}$
title: function selector
example: '0xe8bb3b6c'
- type: string
pattern: ^\d+$
title: block number string
example: '20000000'
- type: string
title: address (hex or ENS)
example: vitalik.eth
description: Can be a block number, transaction or block hash, address, event signature or function selector
example: '0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984'
required: true
name: input
in: path
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.'