x402basequality 0.30

x402-gated lab results endpoint on Base, pay-per-call with USDC at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/lab/results/4

What it does

This endpoint (`/api/v1/lab/results/4`) is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-request APIs spanning data analytics, AI/ML inference, finance, and utility services. The specific resource at `/lab/results/4` is listed under "Premium API Access" but its exact data payload is not documented beyond the generic description. The endpoint is live and returns a standard x402 challenge when called without payment.

Payment is settled on the Base network using USDC (contract `0x8335…2913`) via the x402 "exact" scheme. The maximum amount required per call is 20,000 base units, which at 6 decimals equals $0.02 USD. No API keys are needed; callers authenticate solely through the X-PAYMENT header carrying a signed payment proof. The endpoint accepts POST requests and returns `application/json`.

The broader lowpaymentfee.com platform advertises a uniform $0.02/request pricing model across all endpoints with no rate limits, no minimums, and no commitments. However, the `/api/v1/lab/results/4` path does not appear in the site's publicly listed API catalog (which covers analytics, AI, finance, and utility categories), so its specific functionality and response schema are unclear. Treat this as a demonstration or unlisted endpoint until further documentation is available.

Capabilities

x402-paymentusdc-basepay-per-requestjson-responseno-api-keypost-method

Use cases

  • —Accessing premium lab or data results behind a micropayment wall
  • —Demonstrating x402 payment protocol integration on Base
  • —Agent-driven data retrieval with per-call USDC settlement

Fit

Best for

  • —Developers experimenting with x402 protocol payments
  • —AI agents that need keyless, pay-per-call data access
  • —Micropayment-gated data retrieval on Base L2

Not for

  • —Users needing well-documented, production-grade APIs with clear response schemas
  • —High-volume batch processing where per-request fees add up
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/lab/results/4 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <signed-x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/lab/results/4
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is no documentation for the /lab/results/4 path specifically—it does not appear in the site's public API catalog. No request/response schema, no examples, and the crawled docs/pricing/README pages returned only 'Connect wallet' with no useful content. The endpoint's actual functionality is unknown.

Warnings

  • —The /api/v1/lab/results/4 path is not listed in the provider's public API catalog; its purpose and response format are undocumented.
  • —No OpenAPI spec, no response schema, and no example payloads are available.
  • —Crawled /pricing, /api, and /README pages returned no meaningful content beyond 'Connect wallet'.
  • —This may be a demo or test endpoint rather than a production service.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 22:20:23Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/s338qF
x402-gated lab results endpoint on Base, pay-per-call with USDC at $0.02/request. — Clawmart · Clawmart