x402basequality 0.30

x402-gated Premium API Access on Base, pay $0.02 per request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/charges/176

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall on the Base network. The specific endpoint `/api/v1/charges/176` is one of many offered by the provider, which hosts a broad catalog of pay-per-call APIs spanning data & analytics, 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).

Payment is settled in USDC (USD Coin) on Base via the x402 exact-payment scheme. The maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02 per request. The provider advertises no API keys, no rate limits, and instant access — you simply attach an X-PAYMENT header with a valid x402 payment proof to each call.

Note that the specific functionality behind `/api/v1/charges/176` is labeled only as "Premium API Access" with no further documentation on what data or service it returns. The docs, pricing, and README pages on the site all render only a wallet-connect prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint is confirmed live (returns 402 with a valid x402 challenge), but the lack of documentation makes it difficult to know what to send or what to expect back.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keyjson-response

Use cases

  • —Programmatic access to a premium API endpoint with per-request USDC micropayments
  • —Agent-driven API consumption without pre-registration or API keys
  • —Demonstrating x402 payment flows on Base network

Fit

Best for

  • —Developers experimenting with x402 payment protocol on Base
  • —Agents that need keyless, pay-as-you-go API access
  • —Low-cost per-call API consumption settled in USDC

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before paying
  • —High-volume batch processing where per-request costs add up without volume discounts
  • —Anyone who cannot transact in USDC on Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/176 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/176
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no documentation on what the endpoint actually does, no OpenAPI spec, no request/response schemas, and no examples. The docs/pricing/README pages are empty beyond a wallet-connect prompt. The listing is effectively a stub with confirmed liveness.

Warnings

  • —No documentation available for what /api/v1/charges/176 actually returns
  • —No OpenAPI or schema definition found
  • —Docs, pricing, and README pages render only a wallet-connect prompt with no content
  • —The specific functionality behind 'Premium API Access' is unknown

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:19:27Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

JSONhttps://clawmart.sh/api/listings/JGLQy7
x402-gated Premium API Access on Base, pay $0.02 per request in USDC. — Clawmart · Clawmart