x402basequality 0.30

Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/charges/34

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a collection of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, settled in USDC on the Base network, with no API keys, rate limits, or commitments required.

The specific endpoint `/api/v1/charges/34` is labeled "Premium API Access" in the x402 challenge but lacks detailed documentation about what data or functionality it returns. The x402 challenge confirms it is live, accepts POST requests, and requires a payment of up to 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) to the address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`. 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 data export — all at the same $0.02 price point. However, documentation pages (docs, pricing, README) all resolve to a minimal "Connect wallet" page with no further technical detail. Without OpenAPI schemas, example requests/responses, or detailed docs, the exact input parameters and output format for this specific endpoint remain unknown.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestjson-responseno-api-key

Use cases

  • —Programmatic access to premium API functionality with per-request USDC micropayments
  • —Agent-driven workflows that need keyless, on-demand API access settled on Base
  • —Exploring x402 payment protocol integration for pay-as-you-go services

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents needing keyless, instant API access without subscriptions
  • —Low-volume or sporadic API consumers who prefer per-call pricing

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before integrating
  • —High-volume consumers who would benefit from bulk pricing or rate-limited plans
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/34 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/34
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge is live and confirms pricing and payment details, but the endpoint's actual functionality is entirely undocumented. No OpenAPI schema, no example requests or responses, and all documentation pages render only a 'Connect wallet' prompt. The label 'Premium API Access' is generic and uninformative. This is effectively a stub listing.

Warnings

  • —The specific functionality of /api/v1/charges/34 ('Premium API Access') is not documented anywhere in the crawled material.
  • —All documentation pages (/docs, /pricing, /README, /api) return only a 'Connect wallet' prompt with no technical content.
  • —No OpenAPI spec, input schema, or example responses are available — callers cannot know what to send or what to expect back.
  • —The endpoint path '/api/v1/charges/34' with a numeric ID suggests this may be a charge/invoice endpoint rather than a reusable API, but this is unconfirmed.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:50:24Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/jUVCTh
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart