x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol on the Base network. The specific resource `/api/v1/trades/76` appears to be part of a broader platform offering dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request in USDC.
The endpoint accepts POST requests and returns JSON. Payment is settled on-chain via USDC (contract 0x8335…2913) on Base, using the x402 "exact" scheme. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02. There are no API keys, no rate limits, and no subscription commitments — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
The specific functionality behind `/api/v1/trades/76` is not documented in the crawled material. The platform's landing page lists categories like Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure, but this particular trades endpoint is not among the advertised routes. It may represent a trade-related data lookup or a less-publicized endpoint. Without further documentation or example responses, the exact payload and output remain unclear.
Capabilities
Use cases
- —Accessing trade-related data on a per-request payment basis without needing an API key
- —Integrating low-cost pay-per-call endpoints into agent workflows on Base
- —Programmatic access to premium data feeds settled in USDC
Fit
Best for
- —Agents or bots that need keyless, on-demand API access with crypto micropayments
- —Developers prototyping x402-based payment flows on Base
- —Use cases requiring low-friction, no-subscription API consumption
Not for
- —Users who need detailed documentation or guaranteed SLAs before integrating
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/trades/76 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but the specific /api/v1/trades/76 resource is not documented anywhere in the crawled material. No request/response schema, no examples, and docs/pricing/README pages all render only a wallet-connect prompt with no useful content.
Warnings
- —The specific endpoint /api/v1/trades/76 is not listed among the advertised APIs on the landing page — its exact functionality is unknown.
- —Documentation pages (/docs, /pricing, /README, /api) returned no meaningful content beyond a 'Connect wallet' prompt.
- —No request body schema or response schema is available; callers must discover behavior empirically.
- —The platform advertises many endpoint categories but provides no detailed API documentation for any of them.
Citations
- —The endpoint returns a 402 challenge with x402Version 1, exact scheme, on Base network, requiring 20000 base units of USDChttps://lowpaymentfee.com/api/v1/trades/76
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/trades/76
- —Platform advertises $0.02 per request, no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —Platform lists endpoints in Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com