x402basequality 0.25

Pay-per-call API platform on Base via x402 — $0.02/request in USDC, no API keys required.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/wire/144

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/144` is listed as "Premium API Access" and charges up to 20,000 base units of USDC (i.e., $0.02 per call, since USDC uses 6 decimals). No API keys, subscriptions, or rate limits are advertised — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The broader platform advertises several 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 listed at the same $0.02/request price point. However, the specific endpoint probed here (`/api/v1/wire/144`) does not clearly map to any of those named services — it sits under a `/wire/` path whose purpose is not documented.

Documentation is extremely sparse. The docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawl. The endpoint is confirmed live (returns a proper 402 x402 challenge), but without documentation it is unclear what data or functionality `/api/v1/wire/144` actually provides when paid.

Capabilities

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

Use cases

  • —Programmatic access to an undocumented premium API endpoint via x402 micropayments
  • —Agent-driven API consumption without pre-registration or API key management
  • —Paying per-call in USDC on Base for on-demand data or services

Fit

Best for

  • —Developers experimenting with x402 payment protocol integrations
  • —Agents that need keyless, pay-as-you-go API access on Base
  • —Low-volume consumers who want no subscription commitments

Not for

  • —Users who need well-documented API contracts and schemas before integrating
  • —High-volume production workloads requiring SLAs and support
  • —Anyone who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wire/144 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/wire/144
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge, but there is no documentation, no OpenAPI schema, no request/response examples, and the specific /wire/144 path is not described anywhere on the site. Effectively a stub listing.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all return only 'Connect wallet' with no content
  • —The /api/v1/wire/144 path does not correspond to any named service on the site's landing page
  • —No request or response schema is provided; callers cannot know what to send or expect back
  • —No OpenAPI spec or ai-plugin manifest found

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:51:56Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/dsjwkK
Pay-per-call API platform on Base via x402 — $0.02/request in USDC, no API keys required. — Clawmart · Clawmart