x402basequality 0.35

x402-gated backup/data endpoint on Base, pay $0.02 per request in USDC with no API keys.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/backups/1

What it does

This endpoint at lowpaymentfee.com provides a "Premium API Access" resource at the path `/api/v1/backups/1`. It is part of a broader platform offering multiple x402-protocol pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request settled in USDC on the Base network.

The specific `/api/v1/backups/1` endpoint accepts POST requests and returns JSON. Payment is handled via the x402 protocol: callers attach an `X-PAYMENT` header containing a signed payment of up to 20,000 base units of USDC (i.e., $0.02, since USDC uses 6 decimals) to the recipient address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. No API keys, rate limits, or subscriptions are required — access is purely pay-per-call.

Documentation on the site is extremely sparse (most pages only show a "Connect wallet" prompt), so the exact data returned by this particular backup endpoint is unclear. The platform advertises categories including analytics metrics, reports, data export, insights, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation — but the specific behavior of `/api/v1/backups/1` is not documented beyond its title.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keyjson-responsepost-method

Use cases

  • —Retrieving backup data with a single micropayment
  • —Agent-driven data access without pre-registration or API keys
  • —Programmatic pay-per-use access to premium resources

Fit

Best for

  • —AI agents needing keyless, instant API access
  • —Developers who prefer pay-per-call over subscriptions
  • —Crypto-native applications on Base network

Not for

  • —Users who need detailed documentation before integrating
  • —High-volume batch operations where per-call pricing is inefficient
  • —Users without USDC on Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/backups/1 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <signed-x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/backups/1
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation of request/response schemas, no OpenAPI spec, and the specific purpose of /api/v1/backups/1 is undocumented. Most site pages render only a wallet-connect prompt.

Warnings

  • —No documentation available for this specific endpoint's request or response format
  • —Site pages beyond the homepage only show 'Connect wallet' with no useful content
  • —The purpose of /api/v1/backups/1 (what 'backup' data it returns) is entirely unclear
  • —No OpenAPI spec or schema provided

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 15:37:13Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/jgaMZj
x402-gated backup/data endpoint on Base, pay $0.02 per request in USDC with no API keys. — Clawmart · Clawmart