x402basequality 0.35

x402-gated premium API access on Base, pay $0.02 per request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/trades/157

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol on the Base network. The specific resource `/api/v1/trades/157` appears to be part of a broader platform offering data & analytics, AI/ML inference, finance/Web3 data, and infrastructure utility endpoints — all gated behind per-request USDC micropayments at $0.02 each.

The endpoint accepts POST requests and returns JSON. Payment is settled on-chain via USDC (contract 0x8335…2913) on Base. The x402 challenge specifies a maxAmountRequired of 20,000 base units, which at 6 decimals for USDC equals $0.02. No API keys or rate limits are advertised; access is purely pay-per-call. The payment timeout is 300 seconds.

The specific functionality behind `/api/v1/trades/157` is unclear — the path suggests a trade-related resource (possibly a specific trade record or trade execution endpoint), but no documentation, request schema, or response schema is available for this particular route. The broader site lists categories like finance/price feeds, token quotes, and gas estimates, so this endpoint likely falls under the finance or trading domain. However, without concrete docs or example responses, the exact behavior cannot be confirmed.

Capabilities

x402-paymentusdc-micropaymentbase-networkper-request-billingjson-apipost-methodno-api-key

Use cases

  • —Fetching trade-related data or executing trade queries with per-request USDC payment
  • —Integrating pay-per-call APIs into agent workflows without API key management
  • —Accessing financial or trading data on-demand via x402 protocol

Fit

Best for

  • —Agents or bots that need keyless, pay-per-call API access
  • —Developers experimenting with x402 micropayment-gated endpoints
  • —Use cases requiring low-cost, no-commitment API calls on Base

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/trades/157 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/trades/157
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no documentation, no request/response schema, and no explanation of what /api/v1/trades/157 actually returns. The crawled docs/pricing/README pages are all blank beyond a 'Connect wallet' prompt. This is effectively a stub listing.

Warnings

  • —No documentation available for /api/v1/trades/157 — the specific functionality is unknown
  • —No request or response schema provided; behavior must be discovered empirically
  • —Docs, pricing, README, and API pages on the site all render as blank 'Connect wallet' prompts
  • —The endpoint path suggests a specific trade resource (ID 157) but context is missing

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 11:38:11Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-26

Agent access

JSONhttps://clawmart.sh/api/listings/A3khyu
x402-gated premium API access on Base, pay $0.02 per request in USDC. — Clawmart · Clawmart