x402basequality 0.30

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/backups/2025-06

What it does

This endpoint at lowpaymentfee.com provides a "Premium API Access" resource at the path `/api/v1/backups/2025-06`. It is part of a broader platform offering dozens of x402-gated API endpoints 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/2025-06` path suggests a backup or data-export resource scoped to June 2025. The x402 challenge confirms the endpoint is live, accepting POST requests, and requiring an exact payment of 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals = $0.02) per call. Payment is made via the X-PAYMENT header per the x402 protocol (version 1), with a 300-second timeout. No API keys or rate limits are advertised.

Documentation beyond the landing page is extremely thin — the /docs, /pricing, /api, and /README pages all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no examples of what the backup endpoint actually returns. The platform lists many other endpoints (sentiment analysis, summarization, geocoding, etc.) but provides no detail on any of them. Prospective users should be aware that the actual functionality behind this endpoint is unverified and undocumented.

Capabilities

x402-paymentusdc-basepay-per-requestdata-backupjson-responseno-api-key

Use cases

  • —Retrieving backup data for June 2025 via a single paid API call
  • —Programmatic data export with per-request USDC micropayments
  • —Agent-driven data retrieval without API key management

Fit

Best for

  • —Developers wanting keyless, pay-per-use data access on Base
  • —AI agents that can settle x402 payments in USDC
  • —Users needing backup/export data without subscription commitments

Not for

  • —Users who need detailed API documentation or response schemas before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone unable to transact in USDC on the Base L2 network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/backups/2025-06 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/backups/2025-06
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what this endpoint actually returns. No OpenAPI spec, no request/response examples, and all doc pages are empty stubs. The endpoint's purpose ('backups/2025-06') is ambiguous and unexplained.

Warnings

  • —No documentation available — /docs, /pricing, /api, and /README all return only a wallet-connect prompt with no content.
  • —No OpenAPI or schema definition for request or response payloads.
  • —The actual data returned by /api/v1/backups/2025-06 is unknown and unverifiable.
  • —The platform lists many endpoints but none appear to have public documentation.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 15:36:52Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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