Get the current ETH token price via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns the current price of ETH in a pay-per-call model using the x402 protocol. Payment is settled in USDC on the Base network, with each request costing $0.02 (20,000 base units of USDC with 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof to receive a JSON response.
The endpoint is part of a broader suite of APIs offered by lowpaymentfee.com spanning data analytics, AI/ML inference, finance/Web3 data, and utility services, all priced uniformly at $0.02 per request. The specific endpoint `/api/v1/tokens/ETH/price` falls under the Finance & Web3 category and is designed to return real-time ETH price data. The x402 challenge confirms the endpoint is live, accepts POST requests, and responds with application/json.
Documentation on the site is extremely sparse — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of the response schema. The endpoint's behavior must be inferred entirely from the x402 challenge and the landing page listing.
Capabilities
Use cases
- —Fetching the current ETH price for a trading bot or portfolio tracker
- —Agents that need on-demand crypto price data without managing API keys
- —Integrating real-time ETH pricing into a DeFi application or dashboard
- —Automated workflows that require spot-check token valuations
Fit
Best for
- —AI agents needing keyless, pay-per-call ETH price data
- —Developers prototyping crypto apps who want instant API access without signup
- —Low-volume or bursty price lookups where subscription plans are overkill
Not for
- —High-frequency trading requiring sub-second latency and websocket streams
- —Historical price data or OHLCV candle queries (no evidence this is supported)
- —Users who need detailed response schema documentation before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/tokens/ETH/price \
-H "X-PAYMENT: <x402_payment_proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The x402 challenge confirms the endpoint is live and reveals pricing and payment details, but there is no OpenAPI spec, no documented request/response schema, and no example payloads. The docs pages are empty beyond a wallet-connect prompt. Most details must be inferred, making this effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available — response format is unknown
- —Docs, pricing, and API pages on the site render only 'Connect wallet' with no technical content
- —No example request or response payloads could be found
- —The specific endpoint /api/v1/tokens/ETH/price is not listed on the landing page (landing page lists /api/v1/finance/prices and /api/v1/crypto/quotes instead), so its exact behavior is uncertain
Citations
- —The endpoint returns HTTP 402 with an x402 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/tokens/ETH/price
- —maxAmountRequired is 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), which equals $0.02https://lowpaymentfee.com/api/v1/tokens/ETH/price
- —All APIs on the site are priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The site offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com