x402basequality 0.25

Pay-per-call ACH endpoint 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/ach/200

What it does

lowpaymentfee.com hosts a collection of pay-per-request API endpoints gated by the x402 protocol on the Base network. This specific endpoint (`/api/v1/ach/200`) is listed under the title "Premium API Access." The site advertises a flat $0.02 per request across all its endpoints, paid in USDC (USD Coin) on Base with no API keys, no rate limits, and no minimum commitments.

The x402 challenge confirms the endpoint is live, accepting POST requests and requiring an exact payment of 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals = $0.02) to wallet 0x1A2B…85F3. The payment timeout is 300 seconds. Beyond the endpoint name "Premium API Access" and the path segment "ach/200," there is no documentation describing what this endpoint actually returns or what input it expects. The site's docs, pricing, and API pages all render only a "Connect wallet" prompt with no further content.

The broader lowpaymentfee.com platform lists endpoints across categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. However, the specific functionality of `/api/v1/ach/200` is unclear — the "ach" path segment may relate to ACH (Automated Clearing House) banking data or could be a generic label. Without documentation or example responses, the actual capability of this endpoint cannot be confirmed.

Capabilities

x402-paymentusdc-basepay-per-requestno-api-keypost-endpoint

Use cases

  • —Programmatic access to an ACH-related service with per-call USDC micropayments
  • —Agent-driven API consumption without pre-registration or API key management
  • —Integrating x402-gated endpoints into automated workflows on Base

Fit

Best for

  • —Developers experimenting with x402 pay-per-call protocols
  • —Agents that need keyless, on-demand API access settled in USDC on Base
  • —Use cases where avoiding subscription commitments is preferred

Not for

  • —Users who need well-documented endpoints with clear input/output schemas
  • —High-volume production workloads requiring SLAs or guaranteed uptime
  • —Anyone needing free or fiat-only payment options

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/ach/200 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/ach/200
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what the endpoint does, what inputs it accepts, or what it returns. Docs pages render only 'Connect wallet' with no content. The endpoint path 'ach/200' and title 'Premium API Access' are not self-explanatory. This is effectively a stub listing.

Warnings

  • —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'
  • —The actual functionality of /api/v1/ach/200 is unknown; 'Premium API Access' is not descriptive
  • —No input schema or output schema beyond the basic HTTP POST method is provided
  • —No example requests or responses available anywhere in crawled content

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 02:01:25Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

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