x402basequality 0.25

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/ehr/69

What it does

This endpoint at `/api/v1/ehr/69` is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-request APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services. The specific `/api/v1/ehr/69` 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 record data, but this is unconfirmed. The endpoint is live and returns a valid x402 challenge when called via POST.

Payment is settled on the Base network using USDC (contract `0x8335…2913`). The `maxAmountRequired` is 20,000 base units, which at 6 decimals equals $0.02 per request. The platform advertises uniform $0.02/request pricing across all endpoints, no API keys, no rate limits, and instant access. The x402 scheme used is "exact" with a 300-second payment timeout.

Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional content. There is no OpenAPI spec, no request/response schema, and no description of what data this endpoint actually returns. Without knowing the input parameters or output format, integration requires experimentation or contacting the provider directly.

Capabilities

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

Use cases

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

Fit

Best for

  • —Developers wanting keyless, pay-per-call API access
  • —AI agents with x402-compatible payment capabilities
  • —Users comfortable with USDC payments on Base L2

Not for

  • —Anyone needing documented request/response schemas before integration
  • —Use cases requiring free or subscription-based access
  • —Production systems that need SLA guarantees or support

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/ehr/69 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/ehr/69
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/69 actually does, what inputs it accepts, or what it returns. No OpenAPI spec, no examples, and all doc pages are empty. The listing is effectively a stub.

Warnings

  • —The exact purpose of /api/v1/ehr/69 is unknown — 'ehr' may imply health data, which could involve regulated (HIPAA) content
  • —All documentation pages (docs, API, pricing, README) return only 'Connect wallet' with no useful content
  • —No request or response schema is available; integration requires blind experimentation
  • —The 'ehr' path is not listed among the publicly advertised endpoints on the homepage

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 18:50:28Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-22

Agent access

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