x402basequality 0.30

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/wire/125

What it does

lowpaymentfee.com is a pay-per-request API platform that uses the x402 protocol to accept USDC payments on the Base network. The specific endpoint `/api/v1/wire/125` is listed as "Premium API Access" and returns a standard x402 402 challenge requesting up to 20,000 base units of USDC (i.e., $0.02) per call. No API keys or rate limits are required; callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The broader platform advertises multiple API categories including 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 endpoints are uniformly priced at $0.02 per request.

However, the specific functionality behind `/api/v1/wire/125` is not documented beyond the label "Premium API Access." The crawled docs, pricing, and README pages all returned only a "Connect wallet" prompt with no additional technical documentation, input/output schemas, or usage examples. Without knowing what this endpoint actually returns, callers should treat it as an opaque paid endpoint until further documentation is available.

Capabilities

x402-paymentusdc-base-networkpay-per-requestno-api-keyhttp-post

Use cases

  • —Programmatic access to a paid API endpoint without traditional API key registration
  • —Agent-driven workflows that need to pay per call using USDC on Base
  • —Testing x402 protocol integrations with a low-cost endpoint

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —AI agents that can autonomously pay for API calls via crypto
  • —Users who want no-signup, no-rate-limit API access

Not for

  • —Users who need detailed documentation or guaranteed SLAs before integrating
  • —Anyone without a Base-network USDC wallet or x402-compatible client

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wire/125 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/wire/125
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, confirming it accepts USDC on Base at $0.02/request. However, there is no documentation of what the endpoint actually does, no input/output schema, no examples, and the docs/pricing/README pages are all empty beyond a wallet-connect prompt. The specific purpose of /api/v1/wire/125 is unknown.

Warnings

  • —No documentation available — docs, pricing, and README pages all render only 'Connect wallet' with no content.
  • —The specific functionality of /api/v1/wire/125 ('Premium API Access') is completely undocumented.
  • —No OpenAPI spec, no input schema, and no output schema are provided.
  • —No example requests or responses are available to verify what data the endpoint returns.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:46:11Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/4rKXKG
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart