x402basequality 0.35

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/2023-01

What it does

This endpoint at lowpaymentfee.com provides access to a backup resource dated 2023-01 via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of API categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and no commitments required.

The specific endpoint `/api/v1/backups/2023-01` accepts POST requests and is gated by an x402 payment challenge settled in USDC on the Base network. The maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02. Payment is made via the `exact` scheme to the specified payTo address, with a timeout of 300 seconds. The response MIME type is `application/json`.

The broader platform advertises endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and more — all at the same $0.02 price point. However, documentation beyond the landing page is extremely sparse; the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available for this or any other endpoint on the platform.

Capabilities

x402-paymentusdc-basebackup-datajson-responseper-request-pricingno-api-key

Use cases

  • —Retrieving archived backup data from January 2023
  • —Programmatic access to backup snapshots via micropayment
  • —Agent-driven data retrieval with on-chain USDC settlement

Fit

Best for

  • —Agents needing pay-per-call access to backup data without API key management
  • —Developers experimenting with x402 payment-gated endpoints
  • —Accessing archived data snapshots with minimal friction

Not for

  • —Users needing detailed API documentation or request/response schemas before integrating
  • —High-volume bulk data retrieval where per-request costs add up
  • —Anyone requiring non-crypto payment methods

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/backups/2023-01 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/backups/2023-01
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page listing, and no example payloads. The purpose of the 'backups/2023-01' resource is unclear — it could be test/demo data. The docs, pricing, and README pages are all empty beyond a wallet connect prompt.

Warnings

  • —No OpenAPI or schema documentation available for any endpoint on the platform
  • —All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no content
  • —The purpose and contents of the /api/v1/backups/2023-01 resource are undocumented — it may be demo/test data
  • —No request body schema or response schema is documented anywhere
  • —The platform lists many diverse API categories but provides no evidence of actual functionality behind them

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 15:37:17Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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