x402basequality 0.25

x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/ach/186

What it does

lowpaymentfee.com is an x402-protocol API marketplace that gates access to a variety of endpoints behind per-request USDC micropayments on the Base network. The platform advertises four categories of APIs: 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 $0.02 per request.

The specific endpoint at `/api/v1/ach/186` is labeled "Premium API Access" and returns a live x402 challenge requesting up to 20,000 base units of USDC (0x8335…) on Base, which equals $0.02. Payment is made via the x402 exact scheme with no API keys or rate limits required. The payTo address is `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` and the timeout is 300 seconds.

Documentation is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no indication of what the `/api/v1/ach/186` endpoint actually returns. The endpoint path suggests it may relate to ACH (Automated Clearing House) payment processing, but this is speculative. Without documentation or example responses, it is unclear what data or functionality this endpoint provides.

Capabilities

x402-paymentusdc-micropaymentbase-networkper-request-billingno-api-keypost-endpoint

Use cases

  • —Accessing data analytics or AI inference endpoints with per-request crypto micropayments
  • —Querying financial data (prices, exchange rates, gas estimates) without subscription commitments
  • —Using utility services (geocoding, validation, conversion) on a pay-as-you-go basis

Fit

Best for

  • —Developers who want keyless, pay-per-request API access via crypto
  • —Agents or bots that need programmatic access to diverse utility endpoints settled on Base
  • —Users who prefer micropayment models over monthly subscriptions

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before integrating
  • —Anyone requiring high-volume access where per-request pricing becomes expensive
  • —Users without access to USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/ach/186 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/ach/186
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is zero documentation on what /api/v1/ach/186 actually does or returns. No OpenAPI spec, no example requests/responses, and all doc pages are blank beyond a wallet connect prompt. The listing is effectively a stub.

Warnings

  • —No documentation available — /docs, /api, /pricing, and /README pages all show only 'Connect wallet' with no content
  • —No OpenAPI or schema definition for any endpoint
  • —The specific endpoint path '/api/v1/ach/186' is not listed on the homepage; its purpose is unknown
  • —The 'Premium API Access' label is generic and does not describe actual functionality
  • —ACH in the path may imply regulated financial services — verify compliance before use

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 02:02:17Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/nwyGAb
x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart