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). All endpoints are priced at $0.02 per request, payable in USDC on the Base network with no API keys, no rate limits, and no minimum commitments.
The specific endpoint `/api/v1/wire/194` 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 USDC, i.e., $0.02) per call, settled to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. The response MIME type is `application/json`.
Documentation is extremely sparse — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/wire/194` endpoint specifically returns or what input it expects beyond a POST body. The site's landing page lists many API categories but does not map individual wire IDs to specific functionality. As a result, the exact capability behind this endpoint is unclear.
Capabilities
Use cases
- —Programmatic access to premium API functionality with per-call USDC micropayments
- —Agent-driven workflows that need keyless, on-demand API access on Base
- —Integrating pay-as-you-go endpoints without subscription overhead
Fit
Best for
- —Developers wanting zero-commitment, pay-per-use API access
- —AI agents that can settle x402 payments in USDC on Base
- —Projects needing keyless API access with no rate limits
Not for
- —Users who need detailed API documentation or OpenAPI specs before integrating
- —Applications requiring free or fiat-only payment methods
- —Use cases that need guaranteed SLAs or support contracts
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wire/194 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no documentation, no OpenAPI schema, no request/response examples, and the specific functionality behind /api/v1/wire/194 is unknown. The docs/pricing/README pages are all empty beyond a wallet connect prompt.
Warnings
- —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'
- —The specific functionality of /api/v1/wire/194 is not described anywhere in the crawled content
- —No OpenAPI or JSON schema for request or response bodies
- —No request/response examples available
- —Cannot verify what data or service this endpoint actually provides
Citations
- —All endpoints priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —x402 challenge confirms maxAmountRequired of 20000 base units of USDC (0.02 USD) on Basehttps://lowpaymentfee.com/api/v1/wire/194
- —Site lists APIs across data & analytics, AI/ML, finance & Web3, and infrastructure categorieshttps://lowpaymentfee.com
- —Docs, pricing, API, and README pages render only 'Connect wallet' with no further contenthttps://lowpaymentfee.com/docs