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 specific resource path `/api/v1/wire/186` is not explicitly listed on the provider's landing page among their named API categories, so its exact functionality is unclear. However, the provider operates a broad suite of pay-per-call APIs spanning data & analytics, AI & machine learning (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation).
The endpoint is live and returns a valid x402 challenge. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with the "exact" scheme. The maximum amount required is 20,000 base units, which at 6 decimals equals $0.02 per request — consistent with the provider's advertised flat pricing of $0.02/request across all endpoints. The provider advertises no API keys, no rate limits, and instant access.
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 documentation, and no usage examples available. The specific purpose of the `/api/v1/wire/186` path cannot be determined from the available material. Agents should treat this as an opaque premium endpoint until better documentation surfaces.
Capabilities
Use cases
- —Programmatic access to a premium API endpoint with per-call USDC micropayments
- —Agent-driven workflows needing keyless, pay-as-you-go API access on Base
- —Integrating x402-compatible payment flows into automated pipelines
Fit
Best for
- —Developers or agents already set up with x402 payment on Base
- —Use cases requiring no-signup, no-API-key access
- —Low-volume, pay-per-call consumption patterns
Not for
- —Users who need detailed API documentation or response schemas before integrating
- —High-volume consumers who need bulk pricing or rate-limit guarantees
- —Anyone without a Base-network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wire/186 \
-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, but the specific functionality of /api/v1/wire/186 is undocumented. No OpenAPI spec, no request/response schemas, no examples, and all documentation pages are empty beyond a wallet-connect prompt. This is effectively a stub listing.
Warnings
- —The specific endpoint /api/v1/wire/186 is not listed among the provider's named APIs — its purpose is unknown.
- —All documentation pages (/docs, /api, /pricing, /README) return only a 'Connect wallet' prompt with no usable content.
- —No request or response schema is available; callers cannot know what to send or what to expect back.
- —No OpenAPI or ai-plugin manifest found.
Citations
- —The provider advertises $0.02/request flat pricing with no API keys, no rate limits, and instant access on the Base network.https://lowpaymentfee.com
- —The x402 challenge specifies maxAmountRequired of 20000 base units of USDC (6 decimals) on Base, equaling $0.02.https://lowpaymentfee.com/api/v1/wire/186
- —The provider lists API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure.https://lowpaymentfee.com