Pay-per-call ACH endpoint on Base via x402 — $0.02/request in USDC, no API keys required.
What it does
lowpaymentfee.com hosts a collection of pay-per-request API endpoints settled via the x402 protocol on the Base network using USDC. The specific endpoint at `/api/v1/ach/10` is listed under "Premium API Access" and accepts POST requests. Payment is made per-call with no API keys, no rate limits, and no upfront commitments — each request costs $0.02 (20,000 base units of USDC with 6 decimals) paid to the on-chain address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base.
The provider's landing page advertises a broad catalog of endpoints spanning data & analytics, AI & machine learning (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints share the same $0.02/request pricing model. However, the specific functionality of the `/api/v1/ach/10` path is not documented beyond the generic "Premium API Access" label — the "ach" path segment suggests ACH (Automated Clearing House) payment-related functionality, but no request/response schema or detailed documentation is available.
Documentation pages (/docs, /api, /pricing, /README) all returned only a "Connect wallet" prompt with no substantive content, so the actual input parameters, response format, and precise capabilities of this endpoint remain unknown. The endpoint is live and returns a valid x402 402 challenge.
Capabilities
Use cases
- —Programmatic ACH-related lookups or operations paid per-call via USDC on Base
- —Agent-driven financial workflows that need keyless, pay-as-you-go API access
- —Integrating low-cost payment-gated endpoints into automated pipelines
Fit
Best for
- —Developers wanting zero-signup, pay-per-call API access
- —AI agents with x402-compatible wallets on Base
- —Use cases requiring micropayment-gated financial endpoints
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —High-volume batch processing where per-call pricing may add up
- —Anyone needing non-crypto payment rails
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ach/10 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no documentation, no request/response schema, and the actual functionality behind '/api/v1/ach/10' is undescribed. All doc pages return only 'Connect wallet' with no content. This is effectively a stub listing.
Warnings
- —No documentation available — all doc pages (/docs, /api, /pricing, /README) return only 'Connect wallet' with no content
- —The exact functionality of /api/v1/ach/10 is unknown; 'Premium API Access' is the only description provided
- —No request or response schema is published; callers cannot know what parameters to send or what to expect back
- —The 'ach' path segment suggests ACH payment functionality but this is unconfirmed
Citations
- —The endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/ach/10
- —All endpoints are priced at $0.02/request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The provider offers endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categorieshttps://lowpaymentfee.com
- —Documentation pages return only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs