x402basequality 0.30

Premium API access via x402 micropayment on Base — $0.02 per request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/apikeys/84

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" gated by the x402 payment protocol. The site offers a broad catalog of pay-per-call APIs spanning data & analytics (metrics, reports, data export, insights), AI & machine learning (sentiment analysis, text summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are priced at $0.02 per request, settled in USDC on the Base network with no API keys, no rate limits, and no minimum commitments.

The specific endpoint `/api/v1/apikeys/84` is listed as "Premium API Access" and returns a live x402 challenge requesting up to 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals = $0.02) per call. Payment is made via the x402 exact scheme, with a 300-second timeout. The endpoint accepts HTTP POST and returns application/json.

Documentation is extremely sparse — the /docs, /pricing, /api, 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 from the crawled material. The actual functionality behind this particular endpoint path (`/apikeys/84`) is unclear; it may provision or retrieve an API key, but this is speculative. Users should expect to experiment or contact the provider for details.

Capabilities

x402-paymentusdc-basepay-per-requestmicropaymentapi-key-managementjson-response

Use cases

  • —Acquiring or managing API keys for the lowpaymentfee.com platform via programmatic x402 payment
  • —Agents autonomously purchasing API access without pre-registration or API key provisioning
  • —Integrating pay-per-use API access into automated workflows on Base network

Fit

Best for

  • —Developers wanting zero-signup, pay-as-you-go API access
  • —AI agents that need to autonomously purchase API credentials
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users needing detailed API documentation or OpenAPI specs before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/apikeys/84 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/apikeys/84
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no OpenAPI spec, no request/response schema, and all documentation pages are empty beyond a wallet-connect prompt. The purpose of the /apikeys/84 path is ambiguous. Effectively a stub listing.

Warnings

  • —No OpenAPI or schema documentation available — all doc pages render only 'Connect wallet'
  • —The specific functionality of /api/v1/apikeys/84 is unclear; 'Premium API Access' is a generic label
  • —No request body schema or response examples are documented anywhere in the crawled material
  • —The site lists many other endpoints but none have documented input/output schemas

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 15:20:50Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/a94zAm
Premium API access via x402 micropayment on Base — $0.02 per request in USDC. — Clawmart · Clawmart