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, finance & Web3 data, and infrastructure utilities — all priced at $0.02 per request, settled in USDC on the Base network.
The specific endpoint `/api/v1/wire/166` is listed as "Premium API Access" with a maximum cost of 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals). It accepts HTTP POST requests and returns application/json. Payment is handled via the x402 exact-payment scheme: callers attach an X-PAYMENT header with a signed payment to the payTo address. No API keys, rate limits, or upfront commitments are required — access is instant once payment is included.
Documentation on the site is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional content. There is no OpenAPI spec, no request/response schema documentation, and no examples for what `/api/v1/wire/166` actually returns. The endpoint is confirmed live (returns 402 challenge correctly), but without documentation it is unclear what data or functionality "Premium API Access" specifically provides. The site's landing page groups endpoints into categories (analytics, AI, finance, utilities) but this particular wire/166 path does not appear in any of those listed categories.
Capabilities
Use cases
- —Programmatic access to premium data or services with per-request USDC micropayments
- —Agent-driven API consumption without pre-registration or API key management
- —Integrating pay-as-you-go endpoints into crypto-native workflows on Base
Fit
Best for
- —Developers wanting zero-commitment, pay-per-use API access
- —AI agents that can settle x402 payments autonomously on Base
- —Users who prefer crypto micropayments over subscription billing
Not for
- —Users who need detailed API documentation or request/response schemas 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/wire/166 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <signed-x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, confirming pricing and payment details. However, there is no documentation, no OpenAPI spec, no request/response schema, and no explanation of what this specific endpoint actually does. The generic title 'Premium API Access' and the wire/166 path do not map to any documented category on the site. This is effectively a stub listing.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
- —No OpenAPI or schema definition for this endpoint
- —The path /api/v1/wire/166 does not appear in the site's listed API catalog — its specific functionality is unknown
- —No request body schema or response examples available
Citations
- —Endpoint returns 402 with x402 challenge advertising USDC on Base at maxAmountRequired 20000 (0.02 USD)https://lowpaymentfee.com/api/v1/wire/166
- —Site advertises $0.02/request pricing with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —USDC contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 uses 6 decimalshttps://lowpaymentfee.com