x402basequality 0.30

x402-gated backup 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/backups/9

What it does

This endpoint at lowpaymentfee.com provides a "Premium API Access" resource at the path `/api/v1/backups/9`. It is part of a broader platform offering dozens of pay-per-request API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all gated via the x402 payment protocol on the Base network.

The specific `/api/v1/backups/9` endpoint accepts POST requests and returns `application/json`. Payment is settled in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The payment timeout is 300 seconds. No API keys or rate limits are advertised; access is granted purely through the x402 payment header.

The platform's landing page lists a uniform $0.02/request pricing model across all endpoints with no minimums or commitments. However, the specific functionality of the `/api/v1/backups/9` endpoint is not documented beyond the generic "Premium API Access" label. There is no OpenAPI spec, no detailed documentation, and the docs/pricing/API pages all render only a "Connect wallet" prompt with no additional content. The actual data returned by this backup endpoint is unknown.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestjson-responsepost-method

Use cases

  • —Retrieving backup data via a single pay-per-call transaction
  • —Agent-driven access to backup resources without API key management
  • —Programmatic data retrieval settled in USDC on Base

Fit

Best for

  • —Agents or services that need keyless, pay-per-use API access
  • —Users who prefer crypto micropayments over subscription billing
  • —Workflows requiring on-demand backup data retrieval

Not for

  • —Users who need detailed documentation or schema guarantees before integrating
  • —High-volume batch operations where per-request pricing is inefficient
  • —Users without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/backups/9 \
  -H "X-PAYMENT: <x402-payment-header>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/backups/9
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documentation beyond a generic label, no request/response schema, and no indication of what data the /api/v1/backups/9 endpoint actually returns. The docs, pricing, and API pages are all empty beyond a wallet-connect prompt.

Warnings

  • —No documentation exists for the /api/v1/backups/9 endpoint — its actual functionality is unknown
  • —No OpenAPI or JSON schema available for request or response payloads
  • —All doc/pricing/API pages render only 'Connect wallet' with no content
  • —The 'backups/9' path suggests a resource ID but no context is given for what backup data is served

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 16:09:41Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/3CxqVV
x402-gated backup endpoint on Base, pay-per-call with USDC at $0.02/request. — Clawmart · Clawmart