353 pay-per-call blockchain analytics endpoints across Base, Tron, Bitcoin, XRP, and Kaspa via x402.
What it does
EruditePay x402 Facilitator exposes 353 x402-payable blockchain analytics endpoints covering Base, Tron, Bitcoin, XRP, and Kaspa. The specific endpoint listed here (`/v1/pay/supported`) returns the supported chains, currencies, fees, and settlement addresses for the EruditePay payment system. It costs $0.001 per call in USDC on Base (eip155:8453) or USDT on Tron.
The broader API surface spans wallet profiling, token prices (single and batch, OHLCV history up to 365 days), DEX quotes and trades (Uniswap V3, Aerodrome, SunSwap), whale tracking, stablecoin analytics, NFT metadata and collection stats, DeFi TVL/yield/lending rates, exchange inflow/outflow monitoring, sanctions checks (OFAC SDN), token security audits (honeypot, rug-pull scoring via GoPlus), MEV sandwich detection, arbitrage opportunity scanning, cross-chain bridge quotes (via deBridge), gas/energy price oracles with forecasts, and merchant payment link creation. Prices range from $0.001 to $0.10 per call depending on endpoint complexity. Payment is accepted as USDC on Base or USDT on Tron, settled via the x402 protocol through the facilitator at bridge.eruditepay.com.
The API provides a full OpenAPI 3.1 spec, robots.txt allowing crawlers, and a free preview mechanism in the 402 challenge response. Bundle purchases are available ($0.10 for 60s gas oracle access, $0.50 for 60s all-intel access). The facilitator itself supports 20 blockchains for settlement at 0.5% per settlement with free verification.
Capabilities
Use cases
- —AI agents querying real-time token prices, wallet balances, and DeFi yields across Base and Tron
- —Compliance bots running OFAC sanctions checks and address risk scoring before processing transactions
- —Trading bots scanning for DEX arbitrage opportunities, volume anomalies, and MEV sandwich attacks
- —Portfolio trackers aggregating cross-chain wallet holdings with P&L calculations
- —Token launch monitors detecting new deployments, early buyers, and rug-pull risk scores
Fit
Best for
- —Agent-native pay-per-call blockchain data without API keys or subscriptions
- —Multi-chain analytics spanning Base and Tron in a single API
- —Token security auditing including honeypot detection and tax analysis
- —Real-time whale and exchange flow monitoring
Not for
- —Historical data beyond what GeckoTerminal/DefiLlama provide (no proprietary indexer disclosed)
- —Executing on-chain transactions (read-only analytics, no swap execution)
- —Chains beyond Base, Tron, Bitcoin, XRP, and Kaspa for analytics endpoints
Quick start
# Query supported payment chains (costs $0.001 USDC on Base)
curl -X GET https://bridge.eruditepay.com/v1/pay/supported \
-H 'X-PAYMENT: <x402-payment-header>'Example
Response
{
"fees": {
"merchant_fee_bps": 100,
"merchant_fee_pct": "1%"
},
"chains": [
{
"id": "base",
"name": "Base",
"network": "eip155:8453",
"currencies": [
{
"name": "USD Coin",
"symbol": "USDC",
"contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"decimals": 6
}
],
"settlement_address": "0x6961b88476a9b89C4ed97A4aF4D190754d5e70A1"
},
{
"id": "tron",
"name": "Tron",
"network": "tron:0x2b6653dc",
"currencies": [
{
"name": "Tether USD",
"symbol": "USDT",
"contract": "TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t",
"decimals": 6
}
],
"settlement_address": "TUv24DV84iMN7WR1Kt2SLZfJbfLgkX3FEp"
}
]
}Endpoint
Quality
Full OpenAPI 3.1 spec with 353 endpoints, live 402 challenge with free preview data, clear pricing in human-readable USD, and dual-network payment support. Docked slightly because response schemas are not detailed (only 200/402 status codes, no field-level output schemas) and no example responses are provided per-endpoint in the spec.
Warnings
- —Response schemas in the OpenAPI spec lack field-level detail — only status codes 200 and 402 are documented without response body schemas
- —The /docs, /api, /pricing, and /README paths on x402.eruditepay.com all return 'Cannot GET' — documentation appears to live at docs.eruditepay.com but was not crawled
- —Claims of 20 supported settlement chains and FinCEN MSB registration could not be independently verified from the crawl data alone
- —The sanctions-check endpoint touches regulated compliance territory — users should verify accuracy independently
Citations
- —353 x402-payable blockchain analytics endpoints across Base, Tron, Bitcoin, XRP, and Kaspahttps://x402.eruditepay.com
- —Payment accepted as USDC on Base (eip155:8453) or USDT on Tron (tron:0x2b6653dc)https://x402.eruditepay.com
- —0.5% per settlement, verification is freehttps://x402.eruditepay.com
- —FinCEN MSB Registered, BSA ID 31000324258137https://x402.eruditepay.com
- —Facilitator supports 20 blockchains including Bitcoin, Tron, XRP, Dogecoin, Litecoinhttps://x402.eruditepay.com
- —/v1/pay/supported endpoint costs $0.001 USDC (amount 1000 with 6 decimals)https://x402.eruditepay.com/v1/pay/supported