Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The site hosts a broad catalog of pay-per-request APIs spanning data & analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). Each request costs $0.02 in USDC on the Base network, with no API keys, no rate limits, and no minimum commitments required.
The specific endpoint `/api/v1/generate/resource/79` is listed as "Premium API Access" and accepts HTTP POST requests. The x402 challenge confirms it is live, requesting up to 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) per call, paid to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. Settlement uses the "exact" scheme with a 300-second timeout.
Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no examples available. The exact functionality behind `resource/79` is unclear; the site's landing page groups endpoints into categories but does not list this specific resource path, so its precise behavior cannot be confirmed from available material.
Capabilities
Use cases
- —Programmatic access to utility or generation endpoints without managing API keys
- —Agent-driven workflows that pay per call using USDC on Base
- —Integrating low-cost API calls into Web3 applications
Fit
Best for
- —Developers wanting zero-signup, pay-per-use API access
- —AI agents with x402-compatible wallets on Base
- —Prototyping workflows that need cheap, keyless API calls
Not for
- —Users who need detailed API documentation or guaranteed SLAs
- —Applications requiring high-throughput with predictable billing (subscription model preferred)
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/79 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI spec, no request/response schema, and no examples. The exact functionality of resource/79 is unknown. Docs pages return only a wallet-connect prompt.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
- —No OpenAPI or schema describing request/response format for this endpoint
- —The specific resource path /api/v1/generate/resource/79 is not listed on the site's landing page; its exact functionality is unknown
- —No examples or sample responses available
Citations
- —The endpoint returns a 402 x402 challenge requesting up to 20,000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/generate/resource/79
- —The site advertises $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/generate/resource/79
- —Available API categories include Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructurehttps://lowpaymentfee.com