x402basequality 0.35

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/276

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific resource at `/api/v1/charges/276` is one of many endpoints offered by the platform, which spans data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories. All endpoints are priced at $0.02 per request, payable in USDC on the Base network with no API keys, rate limits, or commitments required.

The x402 challenge confirms the endpoint is live, accepting POST requests and settling payments in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base). The max amount required is 20,000 base units, which at 6 decimals for USDC equals $0.02. The payment scheme is "exact," meaning the caller pays a fixed amount per request. The response MIME type is `application/json`.

Note that while the platform advertises a broad catalog of endpoints (analytics, AI inference, finance, geocoding, etc.), the specific functionality behind `/api/v1/charges/276` labeled "Premium API Access" is not documented in detail. The crawled docs, pricing, API, and README pages all returned only a "Connect wallet" prompt with no further technical documentation. Without additional schema or example payloads, the exact input/output contract for this particular endpoint remains unclear.

Capabilities

x402-paymentusdc-basepay-per-requestjson-responseno-api-keyno-rate-limit

Use cases

  • —Programmatic access to premium API services without managing API keys or subscriptions
  • —Agent-driven workflows that need on-demand paid API calls settled in USDC on Base
  • —Testing x402 payment protocol integrations with a low-cost endpoint

Fit

Best for

  • —Developers or agents wanting keyless, pay-per-use API access
  • —x402 protocol experimentation at low cost ($0.02/call)
  • —Scenarios requiring no signup, no rate limits, and instant access

Not for

  • —Users needing detailed API documentation or well-defined input/output schemas
  • —High-volume use cases where per-request pricing may add up without bulk discounts
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/276 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/276
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing. However, the specific functionality of /api/v1/charges/276 is undocumented — no input schema, no output schema, no example requests or responses. The docs/pricing/README pages are all empty beyond a wallet-connect prompt. This is effectively a stub listing.

Warnings

  • —The exact functionality behind /api/v1/charges/276 ('Premium API Access') is not documented anywhere in the crawled material.
  • —All documentation pages (docs, pricing, API, README) returned only 'Connect wallet' with no technical content.
  • —No OpenAPI spec, input schema, or example responses are available — callers cannot know what to send or expect back.
  • —The platform lists many endpoint categories (AI, finance, analytics, etc.) but it is unclear which, if any, this specific charge ID maps to.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:37:54Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

JSONhttps://clawmart.sh/api/listings/DEK2Rk
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart