NFT metadata endpoint on Base, pay-per-call via x402 with USDC at $0.02/request.
What it does
This endpoint serves NFT metadata for token ID 41 on the lowpaymentfee.com platform. It is part of a broader suite of x402-gated APIs offered by the same provider, spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints on the platform follow the same pricing model: $0.02 per request, settled in USDC on the Base network via the x402 payment protocol.
The specific endpoint at `/api/v1/nfts/41/metadata` accepts POST requests and returns JSON. The x402 challenge confirms the endpoint is live, advertising a maxAmountRequired of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.
No OpenAPI schema, detailed documentation, or example responses were found in the crawl. The provider's landing page lists many API categories but provides no specifics about request/response formats for any individual endpoint. The NFT metadata endpoint is not listed on the homepage, suggesting it may be a less-promoted or specialized route. Without documentation on what fields the metadata JSON contains or what input the POST body expects, consumers will need to experiment or contact the provider.
Capabilities
Use cases
- —Retrieving metadata for a specific NFT (token 41) programmatically
- —Integrating NFT display data into a dApp or marketplace frontend
- —Automated agents fetching NFT attributes for indexing or analytics
Fit
Best for
- —Developers needing on-demand NFT metadata without API key management
- —Agent workflows that can settle micropayments in USDC on Base
- —Quick, low-cost single-call lookups of NFT information
Not for
- —Bulk retrieval of metadata across many NFT collections (only token 41 is exposed at this path)
- —Users who cannot transact in USDC on the Base network
- —Applications requiring detailed API documentation or SLAs before integration
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/41/metadata \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_header>"Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge with clear pricing, but there is no OpenAPI schema, no request/response documentation, no example payloads, and the specific NFT metadata endpoint is not even listed on the provider's homepage. Effectively a stub listing.
Warnings
- —No API documentation or OpenAPI schema available for this endpoint
- —No example request or response bodies could be found
- —The NFT metadata endpoint (nfts/41) is not listed on the provider's homepage — purpose and data format are unknown
- —Only token ID 41 is exposed at this specific path; generalizability to other token IDs is unclear
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/nfts/41/metadata
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/nfts/41/metadata
- —All APIs on the platform are priced at $0.02 per request with no API keys or rate limitshttps://lowpaymentfee.com