x402basequality 0.30

Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/generate/resource/54

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The site hosts a broad catalog of pay-per-request APIs spanning data & analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). Each call costs $0.02 in USDC on the Base network, with no API keys, no rate limits, and no minimum commitments required.

The specific resource probed (/api/v1/generate/resource/54) returned a valid x402 402 challenge advertising a maxAmountRequired of 20,000 base units of USDC (0x8335… on Base, 6 decimals = $0.02). Payment is made via the x402 "exact" scheme to the specified payTo address. The endpoint accepts HTTP POST requests and returns application/json responses. Timeout for payment settlement is 300 seconds.

Documentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no additional technical content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawled material. The exact functionality behind "/api/v1/generate/resource/54" is unclear beyond the generic label "Premium API Access." Prospective callers should be aware that without documented input/output schemas, integration requires experimentation or direct contact with the provider.

Capabilities

x402-paymentusdc-basepay-per-requestjson-apino-api-keyhttp-post

Use cases

  • —Programmatic access to premium API resources without traditional API key management
  • —Agent-driven workflows that need instant, keyless API access paid in USDC on Base
  • —Integrating pay-per-use utility or generation endpoints into automated pipelines

Fit

Best for

  • —Developers wanting zero-signup, pay-as-you-go API access
  • —AI agents with x402-compatible wallets on Base
  • —Low-volume or bursty workloads where per-request pricing is economical

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscription plans
  • —Anyone without a Base-network USDC wallet or x402-compatible client

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/54 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/generate/resource/54
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no usage examples, and the specific functionality of resource/54 is undefined. Documentation pages are effectively empty. This is essentially a stub listing.

Warnings

  • —No OpenAPI or schema documentation available — input/output formats are unknown
  • —All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no content
  • —The specific purpose of /api/v1/generate/resource/54 is not documented; 'Premium API Access' is a generic label
  • —No request or response examples could be sourced

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 22:50:36Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/7qsb2D
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart