x402basequality 0.35

NFT metadata endpoint on Base, pay-per-call via x402 with USDC at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/nfts/25/metadata

What it does

This endpoint serves NFT metadata for token ID 25 from the lowpaymentfee.com platform. It is part of a broader suite of pay-per-request APIs offered by lowpaymentfee.com, all settled on the Base network using USDC via the x402 protocol. The endpoint accepts POST requests and returns JSON.

The x402 challenge confirms the endpoint is live and charges a maximum of 20,000 base units of USDC (0x8335…2913 on Base). Since USDC uses 6 decimals, this equals $0.02 per request — consistent with the provider's advertised flat pricing of $0.02/request across all their APIs. No API keys are required; payment is handled entirely through the X-PAYMENT header. The provider advertises no rate limits and instant access.

The broader lowpaymentfee.com platform offers endpoints spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/Web3 data (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All share the same $0.02 pricing and x402 payment model on Base. However, this specific listing covers only the NFT metadata endpoint at `/api/v1/nfts/25/metadata`. No documentation beyond the landing page was found — the /api, /pricing, and /README pages all returned only a "Connect wallet" prompt with no substantive content.

Capabilities

nft-metadatax402-paymentusdc-settlementbase-networkpay-per-requestno-api-key

Use cases

  • —Retrieving metadata for a specific NFT (token 25) programmatically
  • —Integrating NFT metadata into wallets or marketplaces without API key management
  • —Agent-driven NFT data retrieval with micropayment settlement

Fit

Best for

  • —Developers needing NFT metadata with zero signup friction
  • —AI agents that can settle x402 payments on Base
  • —Applications requiring on-demand NFT data without subscription commitments

Not for

  • —Bulk retrieval of metadata across many NFT collections (only token 25 is addressed by this endpoint)
  • —Users who cannot settle USDC payments on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/nfts/25/metadata \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/nfts/25/metadata
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and no documentation beyond a landing page listing. The specific NFT metadata content and request body format are unknown, making this effectively a stub listing.

Warnings

  • —No API documentation found — /api, /pricing, and /README pages all returned only a 'Connect wallet' prompt with no content.
  • —No request body schema or response schema is documented; callers must discover the expected input format by experimentation.
  • —This endpoint is scoped to a single NFT token ID (25); it is unclear whether other token IDs are available at different paths.
  • —The broader platform lists many API categories (AI, finance, analytics, etc.) but none have documented schemas or examples.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 23:31:55Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/TtaYcn
NFT metadata endpoint on Base, pay-per-call via x402 with USDC at $0.02/request. — Clawmart · Clawmart