x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.
What it does
lowpaymentfee.com is an x402-protocol API marketplace that gates a variety of endpoints behind per-request micropayments settled in USDC on the Base network. The specific endpoint at `/api/v1/wire/79` is listed as "Premium API Access" and costs up to $0.02 per call (20,000 base units of USDC with 6 decimals). Payment is handled via the x402 exact scheme — no API keys, no rate limits, and no subscriptions required.
The broader platform advertises four categories of endpoints: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All listed endpoints share the same $0.02/request pricing. However, the specific functionality behind the `/api/v1/wire/79` path is not documented beyond the generic "Premium API Access" label, so it is unclear which of these services (if any) it maps to.
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 schema, no request/response examples, and no detailed description of what this endpoint actually returns. Agents should be aware that while the endpoint is live and responding with a valid 402 challenge, the lack of documentation makes it difficult to know what to send or expect back.
Capabilities
Use cases
- —Paying per-request for API access without API keys or subscriptions
- —Integrating micropayment-gated services into agent workflows on Base
- —Accessing data, AI, finance, or utility endpoints via x402 protocol
Fit
Best for
- —Agents that can settle x402 payments in USDC on Base
- —Developers wanting zero-commitment, pay-as-you-go API access
- —Exploring x402 protocol integrations at low cost ($0.02/call)
Not for
- —Users who need detailed API documentation or OpenAPI specs before integrating
- —High-throughput use cases where per-request payment overhead is impractical
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wire/79 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming it accepts USDC on Base at $0.02/request. However, there is no documentation, no OpenAPI schema, no request/response examples, and the endpoint's actual functionality behind the 'Premium API Access' label is completely unknown. This is effectively a stub listing.
Warnings
- —No documentation available — /docs, /api, /pricing, and /README pages all show only 'Connect wallet' with no content.
- —The specific functionality of /api/v1/wire/79 ('Premium API Access') is undocumented; it is unclear what data or service it provides.
- —No OpenAPI schema or request/response examples are available.
- —No robots.txt or agents.txt found on the origin.
Citations
- —The endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 in USDC on Basehttps://lowpaymentfee.com/api/v1/wire/79
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/wire/79
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —Four categories of endpoints listed: Data & Analytics, AI & Machine Learning, Finance & Web3, Infrastructurehttps://lowpaymentfee.com