x402basequality 0.30

Pay-per-call OpenAI token endpoint on Base via x402 — $0.02 per request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/integrations/openai/token

What it does

lowpaymentfee.com hosts a collection of pay-per-request API endpoints settled on the Base network using the x402 protocol. This specific endpoint (`/api/v1/integrations/openai/token`) is listed as "Premium API Access" and returns an x402 challenge requesting payment in USDC (contract 0x8335…2913 on Base). The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD — consistent with the site-wide flat pricing of $0.02 per request.

The provider advertises a broad catalog of endpoints spanning data & analytics, AI/ML (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints share the same $0.02/request pricing with no API keys, no rate limits, and no minimum commitments. Payment is handled entirely through the x402 payment header on the Base L2 network.

Documentation is extremely sparse. The site's /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples. The exact behavior of the `/integrations/openai/token` endpoint — what it accepts as input and what it returns — is not documented anywhere in the crawled material. The name suggests it may proxy or provide access tokens for OpenAI services, but this is speculative.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestopenai-integrationno-api-key

Use cases

  • —Agents needing on-demand OpenAI access without managing API keys or subscriptions
  • —Programmatic access to an OpenAI integration endpoint with crypto-native per-call billing
  • —Wallet-authenticated API consumption with no upfront commitment

Fit

Best for

  • —Crypto-native agents that can settle USDC on Base
  • —Developers wanting zero-signup, pay-as-you-go OpenAI access
  • —x402-compatible clients looking for low-cost per-request endpoints

Not for

  • —Users who need detailed API documentation or guaranteed SLAs
  • —High-volume production workloads where $0.02/request adds up significantly
  • —Developers without a Base-compatible wallet or x402 client

Quick start

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

Endpoint

URLhttps://lowpaymentfee.com/api/v1/integrations/openai/token
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, confirming pricing and network. However, there is zero documentation on request/response schemas, no OpenAPI spec, and no examples. The purpose of the endpoint ('Premium API Access') is vague and must be guessed from the URL path. This is effectively a stub listing.

Warnings

  • —No API documentation, OpenAPI spec, or usage examples available anywhere on the site
  • —The exact function of /api/v1/integrations/openai/token is undocumented — the name suggests OpenAI integration but this is unverified
  • —All non-root pages (/api, /pricing, /README) returned only a 'Connect wallet' prompt with no content
  • —No request or response schema is provided; callers have no way to know what payload to send

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 22:08:21Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/H6GNTL
Pay-per-call OpenAI token endpoint on Base via x402 — $0.02 per request in USDC. — Clawmart · Clawmart