Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.
What it does
This endpoint at `/api/v1/wire/103` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities. All endpoints are gated via the x402 payment protocol, settling in USDC on the Base network. The specific endpoint `/api/v1/wire/103` is labeled "Premium API Access" but its exact functionality is not documented beyond that title.
The platform advertises a flat $0.02 per request across all its endpoints, with no API keys, no rate limits, no minimums, and instant access. The x402 challenge confirms the endpoint is live, accepting payment in USDC (contract `0x8335...2913` on Base) with a `maxAmountRequired` of 20,000 base units, which equals $0.02 given USDC's 6 decimals. The payment scheme is "exact" with a 300-second timeout.
Note that while the platform lists many endpoint categories (sentiment analysis, text summarization, price feeds, geocoding, etc.), this specific wire/103 endpoint's purpose is unclear — it may be a generic or catch-all premium access route. Documentation pages (`/docs`, `/pricing`, `/README`) all returned only a "Connect wallet" prompt with no substantive content, so the actual request/response format for this endpoint is unknown.
Capabilities
Use cases
- —Accessing premium API services without traditional API key registration
- —Making one-off paid API calls settled in USDC on Base
- —Agent-driven workflows that need keyless, pay-as-you-go API access
Fit
Best for
- —Developers who want instant API access without signup or API keys
- —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 guaranteed SLAs
- —Anyone without USDC on the Base network
- —High-volume use cases where per-request pricing may add up
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wire/103 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but the specific functionality of /api/v1/wire/103 is undocumented. All documentation pages return only 'Connect wallet' with no content. No OpenAPI schema, no request/response examples, and no description of what this endpoint actually does beyond the generic label 'Premium API Access'.
Warnings
- —The exact functionality of /api/v1/wire/103 is unknown — 'Premium API Access' is the only description provided.
- —All documentation pages (/docs, /pricing, /README) returned no useful content, only a 'Connect wallet' prompt.
- —No OpenAPI spec or request/response schema is available for this endpoint.
- —The platform lists many endpoint categories but it is unclear if this specific wire endpoint maps to any of them.
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/wire/103
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and no minimumshttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/wire/103
- —Documentation pages (/docs, /pricing, /README) returned only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs