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 36 from the lowpaymentfee.com platform. It is part of a broader suite of pay-per-request APIs offered by the same provider, spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints use the x402 payment protocol, settling in USDC on the Base network.
The specific endpoint at `/api/v1/nfts/36/metadata` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). No API keys are required; payment is handled inline via the X-PAYMENT header. The provider advertises no rate limits and instant access.
Documentation is minimal — there is no OpenAPI spec, no request/response schema beyond the x402 outputSchema stub, and no examples of what the metadata response actually contains. The endpoint is live (returns a proper 402 challenge), but the exact structure of the NFT metadata returned after payment is unknown from available materials. The provider's landing page lists many other endpoints at the same $0.02 price point, but this specific listing covers only the NFT metadata route for token 36.
Capabilities
Use cases
- —Retrieving metadata for NFT token #36 from this provider
- —Integrating NFT metadata lookups into agent workflows with automatic micropayments
- —Demonstrating x402 payment protocol usage for API access
Fit
Best for
- —Agents needing NFT metadata with no signup or API key
- —Developers experimenting with x402 micropayment-gated APIs
- —Low-volume, on-demand NFT metadata retrieval
Not for
- —Bulk NFT metadata retrieval across many collections or token IDs
- —Users who need detailed documentation or response schema guarantees
- —Querying NFTs outside this specific provider's catalog
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/36/metadata \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no OpenAPI spec, no request body schema, no response example, and no documentation beyond a generic landing page. The actual content of the NFT metadata is unknown.
Warnings
- —No OpenAPI or schema documentation available — request and response formats are unknown
- —Only a single NFT token ID (36) is addressed by this endpoint; generalizability is unclear
- —Landing page lists many endpoints but provides no detailed docs for any of them
- —No examples of successful responses are available
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/nfts/36/metadata
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/nfts/36/metadata
- —Provider advertises $0.02/request, no API keys, no rate limits, instant accesshttps://lowpaymentfee.com