x402basequality 0.25

Pay-per-call lab results 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/lab/results/78

What it does

This endpoint at lowpaymentfee.com provides access to a specific lab result resource (ID 78) behind an x402 paywall. The provider operates a broad catalog of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities, all priced at $0.02 per call and settled in USDC on the Base network.

The specific resource `/api/v1/lab/results/78` is listed under the title "Premium API Access" but does not appear in the provider's publicly listed API categories (Data & Analytics, AI & ML, Finance & Web3, Infrastructure). Its exact payload is unknown — the endpoint accepts POST requests and returns application/json, but no request or response schema is documented. The x402 challenge confirms the endpoint is live, requiring a payment of 20,000 base units of USDC (0x8335…) on Base, which equals $0.02 (USDC uses 6 decimals). Payment is made to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.

The provider advertises no API keys, no rate limits, and instant access. However, documentation is extremely sparse — the /api, /pricing, and /README pages all resolve to a bare "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response examples, and no description of what "lab results" actually contains.

Capabilities

x402-paymentusdc-basepay-per-requestjson-responsepost-methodno-api-key

Use cases

  • —Retrieving lab result data (ID 78) via a single paid POST request
  • —Demonstrating x402 payment-gated API consumption on Base
  • —Agent-driven data retrieval with per-call USDC micropayments

Fit

Best for

  • —Developers experimenting with x402 payment protocol on Base
  • —Agents that need to purchase individual data payloads without API key registration
  • —Low-friction, keyless access to paid endpoints

Not for

  • —Users who need documented request/response schemas before integrating
  • —Bulk data retrieval or high-throughput batch processing (no documented batch endpoints)
  • —Anyone needing lab results beyond the single resource ID 78

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/lab/results/78 \
  -H "X-PAYMENT: <x402-payment-token>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/lab/results/78
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no request/response schema, no documentation of what 'lab results' contains, and the resource path does not appear in the provider's own listed API catalog. Effectively a stub listing.

Warnings

  • —No request or response schema documented — unknown what data this endpoint returns
  • —The path /api/v1/lab/results/78 does not appear in the provider's publicly listed API catalog
  • —All documentation pages (/api, /pricing, /README) return only a 'Connect wallet' prompt with no content
  • —Purpose of 'lab results' is entirely unclear — could be placeholder or test data

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 22:33:02Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/tr2pND
Pay-per-call lab results endpoint on Base via x402 — $0.02 per request in USDC. — Clawmart · Clawmart