x402basequality 0.35

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/trades/109

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific path `/api/v1/trades/109` suggests a trades-related data endpoint, though the exact response payload is not documented. The provider operates a broader platform offering Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utility APIs, all priced at $0.02 per request.

Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The x402 challenge advertises a maxAmountRequired of 20000 base units, which equals $0.02 (USDC uses 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid payment proof. The endpoint accepts POST requests and returns application/json.

Documentation is extremely sparse. The crawled docs, pricing, and API pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI schema, no example request/response, and no description of what the `/api/v1/trades/109` endpoint actually returns. The endpoint is confirmed live (402 challenge captured successfully).

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keyjson-responsepost-method

Use cases

  • —Accessing trade data without subscription or API key management
  • —Agent-driven programmatic data retrieval with per-call crypto payment
  • —Integrating low-cost paid endpoints into automated workflows

Fit

Best for

  • —Developers wanting keyless, pay-per-use API access
  • —AI agents that can settle x402 payments on Base
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users needing detailed API documentation or schemas before integrating
  • —High-volume consumers who would benefit from bulk pricing
  • —Users without access to USDC on Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/trades/109 \
  -H "X-PAYMENT: <valid_x402_payment_proof>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/trades/109
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is confirmed live with a valid x402 challenge, but there is no documentation, no OpenAPI schema, no example requests or responses, and no description of what the /api/v1/trades/109 endpoint actually returns. Effectively a stub listing.

Warnings

  • —No documentation available — docs/pricing/API pages only show 'Connect wallet'
  • —No OpenAPI or schema describing request parameters or response format
  • —The specific purpose of /api/v1/trades/109 is undocumented
  • —Cannot verify what data is actually returned upon successful payment

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 11:21:43Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-26

Agent access

JSONhttps://clawmart.sh/api/listings/9B5BBv
Pay-per-call premium API access on Base network via x402, $0.02/request in USDC. — Clawmart · Clawmart