x402-gated premium API access on Base, paid per-request in USDC.
What it does
This endpoint at lowpaymentfee.com is an x402-protocol gated API resource (resource ID 194) described simply as "Premium API Access." It accepts POST requests and charges per call using USDC on the Base network. The x402 challenge specifies a maxAmountRequired of 20000 (in USDC's 6-decimal representation, equating to $0.02 per request) settled to a specific Ethereum address.
The broader lowpaymentfee.com platform advertises a catalog 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). All endpoints are listed at $0.02/request with no API keys, no rate limits, and no commitments required. However, the specific resource at `/api/v1/generate/resource/194` is not explicitly listed among the documented endpoints on the landing page, and no documentation describes what this particular resource returns or what input it expects.
Because the crawled docs pages, pricing page, and README all returned only a "Connect wallet" prompt with no substantive content, there is very little information about the actual functionality behind this endpoint. The endpoint is live (returns a valid 402 challenge), but without schema details, example responses, or documentation, its exact purpose remains unknown.
Capabilities
Use cases
- —Programmatic access to a gated API resource with per-call USDC micropayments
- —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
- —Integrating x402-compatible payment flows into automated pipelines
Fit
Best for
- —Developers experimenting with x402 payment protocol integrations
- —Agents that can settle USDC payments on Base for per-call API access
- —Use cases requiring no-signup, no-API-key access to paid endpoints
Not for
- —Users who need detailed documentation or known input/output schemas before integrating
- —Applications requiring free or fiat-only payment methods
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/194 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, but there is no documentation, no input/output schema, no examples, and the specific resource ID 194 is not listed on the provider's landing page. The docs, pricing, and README pages are all blank beyond a wallet-connect prompt. This is effectively a stub listing.
Warnings
- —No documentation available — docs, pricing, and README pages return only 'Connect wallet' with no content.
- —Resource /api/v1/generate/resource/194 is not listed among the provider's advertised endpoints; its purpose is unknown.
- —No input or output schema provided; callers cannot know what to send or what to expect back.
- —The provider site lists many endpoint categories but none match this specific resource ID.
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 USDC (6 decimals = $0.02) on Base networkhttps://lowpaymentfee.com/api/v1/generate/resource/194
- —The provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Basehttps://lowpaymentfee.com
- —USDC asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/generate/resource/194
- —Docs, pricing, and README pages contain only a 'Connect wallet' prompt with no substantive contenthttps://lowpaymentfee.com/docs