x402basequality 0.30

x402-gated backup endpoint on Base, paid per-request in USDC at $0.02.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/backups/2026-07

What it does

This endpoint at lowpaymentfee.com provides access to a backup resource at the path `/api/v1/backups/2026-07`. It is part of a broader platform that offers dozens of 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/2026-07` endpoint accepts POST requests and returns `application/json`. Payment is handled via the x402 protocol: callers must include an `X-PAYMENT` header with a valid payment proof. The challenge advertises a `maxAmountRequired` of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The payment scheme is "exact" with a 300-second timeout.

The platform advertises no API keys, no rate limits, and instant access. However, documentation is extremely thin — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no explanation of what the backup resource actually contains or what POST body it expects. The endpoint is live (returns a proper 402 challenge), but without documentation it is difficult to know what data is returned or what input is required.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestjson-responsebackup-data

Use cases

  • —Retrieving backup data for the 2026-07 period via a single paid API call
  • —Programmatic access to backup archives without API key management
  • —Agent-driven data retrieval with on-chain USDC micropayments

Fit

Best for

  • —Developers who want key-less, pay-per-call backup access
  • —AI agents with x402 payment capability on Base
  • —Users needing one-off backup retrieval without subscriptions

Not for

  • —Users who need detailed API documentation before integrating
  • —High-volume bulk backup operations where per-request pricing adds up
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/backups/2026-07 \
  -H "X-PAYMENT: <x402-payment-proof>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/backups/2026-07
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, confirming pricing and payment details. However, there is no OpenAPI spec, no documented request/response schema, no examples, and the docs pages are empty stubs. The purpose of the 'backups/2026-07' resource is unexplained, making this effectively a stub listing.

Warnings

  • —No API documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content.
  • —No request body schema or response schema documented; unclear what data this endpoint returns.
  • —The meaning of 'backups/2026-07' is not explained anywhere in the crawled material.
  • —No OpenAPI or ai-plugin manifest found.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 15:52:08Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/NNLppX
x402-gated backup endpoint on Base, paid per-request in USDC at $0.02. — Clawmart · Clawmart