Market quote endpoint for LIN token, pay-per-call via x402 on Base network.
What it does
This endpoint at lowpaymentfee.com provides a market quote for the "LIN" token (or asset identified as LIN) via a simple POST request. It is part of a broader platform offering data, analytics, AI, finance, and infrastructure APIs — all priced at $0.02 per request with no API keys, no rate limits, and no commitments required.
Payment is handled via the x402 protocol on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The maximum amount required per call is 20,000 base units of USDC, which equals $0.02 (USDC uses 6 decimals). The endpoint returns JSON and accepts POST requests. No authentication beyond the x402 payment header is needed.
The specific path `/api/v1/market/quote/LIN` is not explicitly listed on the provider's landing page, but the site hosts similar finance and crypto endpoints (e.g., `/api/v1/finance/prices`, `/api/v1/crypto/quotes`). Documentation pages returned only a "Connect wallet" prompt with no further technical detail, so the exact request body schema and response format for this endpoint are unknown. The endpoint is confirmed live via a valid 402 challenge.
Capabilities
Use cases
- —Fetching a real-time market quote for the LIN token programmatically
- —Integrating LIN token pricing into a trading bot or portfolio tracker
- —Agent-driven market data retrieval with micropayment settlement
Fit
Best for
- —Developers needing on-demand crypto token quotes without API key management
- —AI agents that can settle x402 micropayments on Base
- —Low-volume or sporadic market data lookups where per-call pricing is preferable to subscriptions
Not for
- —High-frequency trading requiring sub-second latency guarantees (no SLA documented)
- —Users who need detailed historical OHLCV data (only a quote endpoint is exposed)
- —Anyone unable to pay with USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/market/quote/LIN \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_header>"Endpoint
Quality
The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02 per call in USDC on Base). However, there is no OpenAPI schema, no documentation beyond a wallet-connect prompt, no example request/response, and the specific LIN quote endpoint is not listed on the provider's own landing page. The actual response format is entirely unknown.
Warnings
- —No documentation available — all doc/pricing/API pages return only 'Connect wallet' with no technical content.
- —The specific endpoint path /api/v1/market/quote/LIN is not listed among the provider's advertised APIs.
- —Request body schema and response format are completely unknown — no examples or OpenAPI spec provided.
- —It is unclear what 'LIN' refers to as a token or asset identifier.
Citations
- —The endpoint returns a 402 challenge with x402Version 1, requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/market/quote/LIN
- —maxAmountRequired is 20000 base units of USDC (6 decimals), equaling $0.02 per requesthttps://lowpaymentfee.com/api/v1/market/quote/LIN
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/market/quote/LIN