x402basequality 0.25

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/payments/270

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a catalog of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, settled in USDC on the Base network, with no API keys, no rate limits, and no commitments required.

The specific endpoint `/api/v1/payments/270` is labeled "Premium API Access" in the x402 challenge but its exact functionality is not documented beyond that label. The x402 challenge confirms it is live, accepts POST requests, and requires a payment of up to 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) to the address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`. The response MIME type is `application/json`.

Documentation on the site 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 schema, no request/response examples, and no detailed description of what this particular endpoint returns. The platform's landing page lists sibling endpoints for analytics, AI inference, finance data, and utilities, all at the same $0.02 price point, but no specifics are available for this `/payments/270` route.

Capabilities

x402-paymentusdc-base-networkpay-per-requestjson-responseno-api-keypost-method

Use cases

  • —Accessing a premium API endpoint with per-request USDC micropayments on Base
  • —Integrating x402-compatible payment flows into agent workflows
  • —Testing x402 protocol payment challenges against a live endpoint

Fit

Best for

  • —Developers experimenting with x402 payment protocol integrations
  • —Agents that need keyless, pay-per-call API access on Base
  • —Low-volume consumers who prefer no subscriptions or commitments

Not for

  • —Users who need detailed API documentation or schemas before integrating
  • —High-volume production workloads requiring SLAs or guaranteed uptime
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/payments/270 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/payments/270
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI schema, no request/response examples, and the purpose of this specific '/payments/270' route is unclear beyond the generic 'Premium API Access' label. Effectively a stub listing.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content
  • —The exact functionality of /api/v1/payments/270 is undocumented; 'Premium API Access' is the only descriptor
  • —No OpenAPI schema or request/response examples are provided
  • —No information on uptime, SLAs, or rate limits beyond the marketing claim of 'no rate limits'

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 06:48:38Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/n947pj
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart