x402basequality 0.30

x402-gated premium API access on Base, paid per-call in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/charges/95

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall on the Base network. The endpoint is live and returns a standard x402 challenge requiring payment in USDC (contract 0x8335…2913 on Base). The maximum amount required per call is 20,000 base units of USDC, which at 6 decimals equals $0.02 per request.

The provider's landing page advertises a broad suite of APIs spanning data & analytics (metrics, reports, data export, insights), AI & machine learning (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 via x402 on Base.

However, this specific endpoint (/api/v1/charges/95) is labeled only as "Premium API Access" with no further documentation on what data or functionality it returns. The docs, pricing, and API pages all render as wallet-connect stubs with no meaningful content. There is no OpenAPI schema, no example request/response, and no description of the input or output format beyond the x402 challenge's mimeType of application/json. The endpoint accepts POST requests. Without additional documentation it is unclear what this particular charge endpoint does or how it differs from the other listed APIs.

Capabilities

x402-paymentusdc-baseper-call-pricingjson-responsepost-method

Use cases

  • —Programmatic access to a paid API endpoint without API keys or subscriptions
  • —Agent-driven pay-per-call workflows settled in USDC on Base
  • —Testing x402 payment flows against a live endpoint

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents that need keyless, pay-per-use API access on Base
  • —Low-cost per-request API consumption without commitments

Not for

  • —Users who need detailed documentation or guaranteed SLAs before integrating
  • —Use cases requiring known, well-documented response schemas

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/95 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/95
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is no OpenAPI schema, no documentation beyond a landing page listing, no example requests or responses, and the specific functionality of /api/v1/charges/95 is undocumented. The docs/pricing/API pages are empty wallet-connect stubs.

Warnings

  • —No documentation available for this specific endpoint — functionality is unknown
  • —No OpenAPI or output schema provided beyond mimeType: application/json
  • —Docs, pricing, and API pages render only as wallet-connect stubs with no content
  • —The endpoint path '/api/v1/charges/95' does not match any of the advertised API routes on the landing page

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 04:03:58Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/AvaHnF
x402-gated premium API access on Base, paid per-call in USDC. — Clawmart · Clawmart