x402basequality 0.25

x402-gated premium API endpoint on Base, pay-per-request with USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/ehr/67

What it does

This endpoint at `/api/v1/ehr/67` is part of the lowpaymentfee.com platform, which offers a collection of x402-protocol pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services. The specific `/api/v1/ehr/67` path is listed under the title "Premium API Access" but its exact functionality is not documented on the site — the "ehr" prefix may suggest electronic health records or a similar domain, but this cannot be confirmed from available material.

The endpoint is live and responds with a valid x402 challenge on POST. Payment is settled on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The maximum amount required is 20,000 base units of USDC, which at 6 decimals equals $0.02 per request — consistent with the platform's uniform $0.02/request pricing. No API keys are needed; access is granted by attaching a valid X-PAYMENT header. The platform advertises no rate limits and instant access.

Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what data this endpoint actually returns. Prospective users should be aware that the endpoint's purpose and response format are unclear from publicly available information.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keypost-method

Use cases

  • —Accessing premium data behind a per-request micropayment wall
  • —Agent-driven API consumption without API key management
  • —Programmatic pay-as-you-go data retrieval on Base network

Fit

Best for

  • —Developers wanting keyless, pay-per-call API access
  • —AI agents that can settle x402 payments autonomously
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Anyone needing well-documented API contracts before integration
  • —Use cases requiring guaranteed SLAs or support
  • —Users without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/ehr/67 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/ehr/67
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is zero documentation on what /api/v1/ehr/67 actually does, no request/response schema, and no examples. The crawled docs pages are empty. The listing is effectively a stub.

Warnings

  • —The exact purpose and data returned by /api/v1/ehr/67 are unknown — 'ehr' may imply health data, which could be a regulated category
  • —No OpenAPI schema, request format, or response examples are available
  • —All documentation pages (docs, API, pricing, README) returned only a 'Connect wallet' prompt with no content
  • —The 'ehr' path segment is not listed among the publicly advertised APIs on the homepage

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 18:48:56Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/6dcayZ
x402-gated premium API endpoint on Base, pay-per-request with USDC. — Clawmart · Clawmart