DeFi liquidity data for LRC (Loopring) via pay-per-call x402 on Base network.
What it does
This endpoint at lowpaymentfee.com provides DeFi liquidity data for the LRC (Loopring) token. It is part of a broader suite of APIs offered by the provider spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all gated behind the x402 payment protocol on the Base network.
The endpoint accepts POST requests and returns JSON. Payment is settled in USDC on Base (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) 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 — consistent with the provider's advertised flat $0.02/request pricing across all endpoints. No API keys are required; access is granted immediately upon valid x402 payment. The provider advertises no rate limits.
Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what fields the liquidity endpoint accepts or returns. The endpoint is confirmed live (returns a proper 402 challenge), but the actual data schema and response format must be discovered by calling it. The specific endpoint path suggests it returns liquidity metrics for the LRC token in a DeFi context, but the exact fields, data sources, and update frequency are unknown.
Capabilities
Use cases
- —Querying current liquidity metrics for LRC (Loopring) across DeFi protocols
- —Building dashboards that track DeFi liquidity for specific tokens
- —Automated trading bots that need liquidity depth data before executing swaps
- —Research and analytics on Loopring token market conditions
Fit
Best for
- —Agents or bots needing on-demand DeFi liquidity snapshots for LRC
- —Developers who want keyless, pay-per-call access without signup
- —x402-native applications settling micropayments in USDC on Base
Not for
- —Users needing comprehensive multi-token liquidity aggregation in a single call
- —Anyone requiring detailed API documentation or guaranteed SLAs before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/defi/LRC/liquidity \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages are empty stubs showing only 'Connect wallet'. The actual data returned is entirely unknown.
Warnings
- —No API documentation available — docs, pricing, and README pages all render only 'Connect wallet'
- —No OpenAPI or output schema provided; request and response formats are unknown
- —No information on data sources, update frequency, or coverage for LRC liquidity data
- —Provider offers a very broad set of endpoints (analytics, AI, finance, utils) all at $0.02 — quality and depth of each is unverified
Citations
- —Endpoint returns 402 with x402 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/defi/LRC/liquidity
- —Max amount required is 20000 base units of USDC (= $0.02) per requesthttps://lowpaymentfee.com/api/v1/defi/LRC/liquidity
- —Provider advertises $0.02/request flat pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/defi/LRC/liquidity
- —Documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs