x402basequality 0.30

x402-gated backup/data endpoint on Base, pay $0.02 per request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/backups/2025-08

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" to a backup resource dated 2025-08, gated behind the x402 payment protocol. The endpoint returns a 402 challenge requiring payment of up to 20,000 base units of USDC (0x8335…2913 on Base network), which equals $0.02 per request (USDC uses 6 decimals). Payment is settled on-chain via the Base L2 network using the "exact" scheme.

The broader lowpaymentfee.com platform advertises a suite of x402-gated APIs spanning data/analytics (metrics, reports, data export, insights), AI/ML (sentiment analysis, text summarization, classification, embeddings), finance/Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation) — all priced at $0.02 per request with no API keys, no rate limits, and instant access.

The specific endpoint being listed (`/api/v1/backups/2025-08`) appears to serve backup data for August 2025. No OpenAPI schema, detailed documentation, or example responses are available — the docs, pricing, and README pages all resolve to a minimal "Connect wallet" prompt. The endpoint is confirmed live via its 402 challenge, but the actual payload structure and content remain undocumented.

Capabilities

x402-paymentusdc-baseper-request-billingbackup-datano-api-keyjson-response

Use cases

  • —Retrieving backup data for August 2025 via a single micropayment
  • —Agent-driven data access without API key registration
  • —Programmatic pay-per-call data retrieval on Base L2

Fit

Best for

  • —Agents or scripts that need on-demand backup data without subscription commitments
  • —Developers exploring x402 payment-gated APIs on Base
  • —Scenarios requiring keyless, pay-as-you-go API access

Not for

  • —Users needing detailed API documentation or schema guarantees before integrating
  • —High-volume batch retrieval where per-request pricing adds up
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/backups/2025-08 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/backups/2025-08
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live via its 402 challenge and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no documentation beyond a wallet-connect prompt, no example request/response bodies, and the purpose of the 'backups/2025-08' resource is unexplained. This is effectively a stub listing.

Warnings

  • —No OpenAPI or schema documentation available — actual request/response format is unknown
  • —Docs, pricing, and README pages all render only a 'Connect wallet' prompt with no substantive content
  • —The specific purpose and contents of the /api/v1/backups/2025-08 resource are undocumented
  • —The broader platform lists many endpoints but none have verifiable documentation

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 15:50:24Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/7MFVKp
x402-gated backup/data endpoint on Base, pay $0.02 per request in USDC. — Clawmart · Clawmart