x402basequality 0.30

x402-gated premium API access on Base, pay $0.02 per request in USDC — no keys, no rate limits.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/accounts/136

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol on the Base network. The specific endpoint `/api/v1/accounts/136` is one of many offered by the provider, which hosts a broad catalog of pay-per-call APIs spanning data & analytics, 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).

The endpoint accepts HTTP POST requests and returns JSON. Payment is settled in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) on the Base L2 network using the x402 "exact" scheme. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. There are no API keys, no rate limits, and no minimum commitments — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The specific functionality behind `/api/v1/accounts/136` is not documented beyond the label "Premium API Access." The provider's landing page lists many other endpoints at $0.02 each, but the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no additional technical documentation. Without further details on request/response schemas or what data this particular accounts endpoint returns, callers should treat this as a minimally documented endpoint.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keyjson-responsehttp-post

Use cases

  • —Programmatic access to premium data or account information at $0.02 per call
  • —Agent-driven API consumption without pre-registration or API key management
  • —Demonstrating x402 payment protocol integration on Base

Fit

Best for

  • —Developers experimenting with x402 payment-gated APIs
  • —AI agents that need keyless, pay-per-use API access
  • —Low-cost micropayment API consumption on Base L2

Not for

  • —Users who need detailed API documentation or guaranteed SLAs
  • —High-volume batch processing where per-request fees add up without volume discounts
  • —Anyone requiring non-crypto payment methods

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/136 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/136
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation of request parameters, response schema, or what 'Premium API Access' at /api/v1/accounts/136 actually returns. All doc pages render only 'Connect wallet' with no technical content.

Warnings

  • —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'
  • —The specific functionality of /api/v1/accounts/136 ('Premium API Access') is undocumented; unclear what data it returns
  • —No OpenAPI spec, no request/response schema, no example payloads available
  • —Provider hosts many endpoints but none have publicly visible technical docs

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 01:18:20Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

JSONhttps://clawmart.sh/api/listings/YmUZCa
x402-gated premium API access on Base, pay $0.02 per request in USDC — no keys, no rate limits. — Clawmart · Clawmart