OnchainExpat x402 APIs
externalPay-per-request AI, crypto, proxy, and utility APIs using x402 protocol
Price
from $0.0100
up to $2.00 per request
Network
base
Category
ai
On-chain txns
26
Uptime
95%
Avg latency
552ms
Checks
160
Status
Healthy
Base URL
Endpoints (50)
Discovered from on-chain x402 payment activity. Prices shown are per-call in USDC.
Check token approvals/permits with risk assessment
Decode and analyze smart contract with AI-powered plain English explanation
Analyze wallet DeFi positions across Uniswap, Aave, staking, and more
Check ENS domain expiration dates for wallet addresses
Get real-time gas prices with EIP-1559 data and recommendations
Get NFT metadata, ownership history, and collection info
Get token price data with market cap, volume, and price changes
Get website/domain trust score with WHOIS, SSL, and pattern analysis
Get token holder distribution, whale concentration, and centralization metrics
Get comprehensive token metadata with security analysis
Token safety bundle — unified risk score from multiple sources
Decode transaction with AI-powered plain English explanation
Wallet forensics bundle — full dossier with identity, DeFi, approvals
Get wallet identity with ENS, labels, activity, and risk assessment
Get wallet identity across all supported chains (ETH, Base, Arbitrum, Polygon, Optimism)
Submit a bug report for x402 APIs
Request a new tool or endpoint
Fetch URL through residential proxy
Fetch URL through geo-targeted residential proxy
Get proxy service usage statistics
General-purpose deep research with sourced AI report
Deep token research report with on-chain + web + AI synthesis
Deep wallet research dossier with cross-chain analysis
Website competitive intelligence report
Quick compliance check for an x402 endpoint
Full endpoint review with ERC-8004 on-chain feedback
Get air quality data
Search books
Get country information
Get cryptocurrency price and market data
Convert fiat currency (USD, EUR, GBP, etc.) — for crypto prices use /crypto/price
Convert address to coordinates
Get GitHub repository info
Get top Hacker News stories
Get IP geolocation
Search news articles
Search food nutrition data
Get Pokemon information
Get stock quote
Get current weather for a location
Get Wikipedia article summary
Venice AI Uncensored Chat (no content filtering)
Venice AI Code Generation (Qwen Coder, Grok Code)
Venice AI Uncensored Image Generation (Chroma, Lustify)
Venice AI Deep Reasoning (chain-of-thought models)
Approval checker (refundable escrow)
Contract decoder (refundable escrow)
DeFi positions (refundable escrow)
ENS expiry (refundable escrow)
Gas oracle (refundable escrow)
Payment
How to call
# one-time setup
npx @apihubio/cli register
npx @apihubio/cli topup 10
# call it
npx @apihubio/cli call https://x402.onchainexpat.com \
-X POST \
-d '{ /* check provider docs for input */ }'
# or save it to Claude/Cursor/Codex
npx @apihubio/cli install
npx @apihubio/cli add https://x402.onchainexpat.comVia direct x402 (advanced)Bring your own wallet
import { wrapFetchWithPayment } from "@x402/fetch";
import { createWalletClient, http } from "viem";
import { privateKeyToAccount } from "viem/accounts";
import { base } from "viem/chains";
const account = privateKeyToAccount("0xYOUR_PRIVATE_KEY");
const client = createWalletClient({ account, chain: base, transport: http() });
const x402Fetch = wrapFetchWithPayment(client);
const res = await x402Fetch("https://x402.onchainexpat.com", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ /* check provider docs for input */ }),
});
const data = await res.json();This is an external service not operated by APIHub. Listing data is sourced from public on-chain records and third-party indexes. Payment goes directly to the service provider via the x402 protocol. APIHub does not guarantee availability, accuracy, or quality of external services.