Fetch a verified contract's ABI and metadata by address, keylessly, from Sourcify
Fetch a verified contract's ABI and metadata by address, keylessly, from Sourcify. Returns the ABI plus a summarized list of function and event signatures, the contract name and compiler, and proxy detection (is_proxy + implementation address). Block explorers gate the ABI behind an API key; this does not. Chains: base, ethereum, arbitrum, optimism, polygon, bsc, avalanche. No API keys, no LLM, one x402 USDC micropayment per call.
3000 (raw units)
price
16
calls / 30d
2
unique payers
2026-09-18
updated
Provider
abi.cyberwarex.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x058D0Cc5CC97e61e8A9f38D6d6365bce525921B2",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "3000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"address": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
"chain": "ethereum"
},
"type": "http"
},
"output": {
"example": {
"abi_entries": 16,
"address": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
"chain": "ethereum",
"compiler": "0.4.19+commit.c4cbbb05",
"events": [
"Transfer(address,address,uint256)"
],
"functions": [
"approve(address,uint256)",
"transfer(address,uint256)",
"withdraw(uint256)"
],
"is_proxy": false,
"match": "exact_match",
"name": "WETH9",
"source": "Sourcify",
"verified": true
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"address": {
"description": "Contract address (0x + 40 hex chars, required).",
"pattern": "^0x[a-fA-F0-9]{40}$",
"type": "string"
},
"chain": {
"description": "EVM chain (default base).",
"enum": [
"arbitrum",
"avalanche",
"base",
"bsc",
"ethereum",
"optimism",
"polygon"
],
"type": "string"
}
},
"required": [
"address"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"abi": {
"description": "the full ABI (JSON array).",
"type": "array"
},
"abi_entries": {
"type": "integer"
},
"address": {
"type": "string"
},
"chain": {
"type": "string"
},
"compiler": {
"type": [
"string",
"null"
]
},
"events": {
"items": {
"type": "string"
},
"type": "array"
},
"functions": {
"items": {
"type": "string"
},
"type": "array"
},
"implementation": {
"description": "logic address if proxy.",
"type": [
"string",
"null"
]
},
"is_proxy": {
"type": "boolean"
},
"match": {
"description": "exact_match or match.",
"type": [
"string",
"null"
]
},
"name": {
"type": [
"string",
"null"
]
},
"source": {
"type": "string"
},
"verified": {
"description": "true if Sourcify has verified source.",
"type": "boolean"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://abi.cyberwarex.com/abi" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://abi.cyberwarex.com/abi");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://abi.cyberwarex.com/abi")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/6838.json, and this resource appears in /discovery/resources and /discovery/search.