DeFi liquidity data for FXS token, paid per-request via x402 on Base network.
What it does
This endpoint provides DeFi liquidity information for the FXS (Frax Share) token. It is part of the lowpaymentfee.com platform, which offers a broad catalog of pay-per-call APIs settled via the x402 protocol on the Base network using USDC. Each request costs $0.02 (20,000 base units of USDC with 6 decimals) and requires no API keys, subscriptions, or rate limits — just an x402 payment header.
The specific endpoint at `/api/v1/defi/FXS/liquidity` accepts POST requests and returns JSON. While the site's landing page lists many endpoint categories (analytics, AI/ML, finance, infrastructure), this particular endpoint falls under the DeFi / Finance & Web3 category. The exact response schema is not documented in the crawled material, so the structure of the returned liquidity data must be inferred from the endpoint path: it likely includes liquidity pool metrics, TVL, or similar DeFi analytics for the FXS token.
The platform advertises uniform $0.02 pricing across all endpoints, no API keys, no rate limits, and instant access. Documentation pages (/docs, /pricing, /README) returned only a "Connect wallet" prompt with no substantive content, so detailed request/response schemas are unavailable.
Capabilities
Use cases
- —Querying current liquidity metrics for the FXS (Frax Share) token across DeFi protocols
- —Building dashboards that track FXS liquidity depth over time
- —Automated trading bots that check FXS liquidity before executing swaps
- —Portfolio analytics tools needing real-time DeFi liquidity data
Fit
Best for
- —Agents or bots that need on-demand FXS liquidity data without managing API keys
- —Developers prototyping DeFi analytics with minimal setup
- —Pay-as-you-go access to token-specific liquidity information
Not for
- —Users needing detailed API documentation or response schema guarantees before integrating
- —High-frequency bulk data consumers who would benefit from subscription pricing
- —Non-crypto use cases unrelated to DeFi liquidity
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/defi/FXS/liquidity \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_header>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 per request in USDC on Base). However, there is no documented request or response schema, no examples, and all documentation pages returned only a wallet-connect prompt. The specific data returned by this DeFi liquidity endpoint is entirely inferred from the URL path.
Warnings
- —No request or response schema documented anywhere in crawled material
- —Documentation pages (/docs, /pricing, /README) contain no substantive content — only a 'Connect wallet' prompt
- —This specific endpoint (/api/v1/defi/FXS/liquidity) is not listed on the site's landing page catalog, raising questions about its provenance
- —Exact response format and fields are unknown — integration requires trial-and-error
Citations
- —The endpoint returns a 402 challenge requiring x402 payment with USDC on Base network at maxAmountRequired of 20000 base unitshttps://lowpaymentfee.com/api/v1/defi/FXS/liquidity
- —The platform advertises $0.02 per request, no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/defi/FXS/liquidity