Query Uniswap pool data via x402 micropayment — $0.02 per request on Base network.
What it does
This endpoint at lowpaymentfee.com provides access to Uniswap liquidity pool data through a pay-per-request model using the x402 protocol. Each call costs $0.02 (20,000 base units of USDC on Base network, 6 decimals). No API keys or accounts are required — payment is handled inline via the X-PAYMENT header using USDC on the Base L2 chain.
The endpoint accepts POST requests and returns JSON. It is part of a broader suite of APIs offered by lowpaymentfee.com spanning DeFi data, analytics, AI/ML inference, finance, and utility services, all priced uniformly at $0.02 per request. The site advertises no rate limits, no minimums, and instant access.
Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what parameters the Uniswap pools endpoint accepts or what fields it returns. The endpoint is confirmed live (returns a valid x402 402 challenge), but without documentation it is difficult to know exactly what data is returned or what request body format is expected.
Capabilities
Use cases
- —Retrieve current Uniswap liquidity pool information for trading or analytics
- —Feed DeFi pool data into automated trading agents without managing API keys
- —Integrate on-demand Uniswap pool queries into dashboards or bots via micropayments
Fit
Best for
- —Agents or bots that need on-demand DeFi pool data without subscription commitments
- —Developers prototyping DeFi analytics tools who want instant, keyless API access
- —Low-volume consumers who prefer pay-per-call over monthly plans
Not for
- —High-frequency trading systems that need sub-second latency and bulk data (no documented rate guarantees)
- —Users who need detailed API documentation or guaranteed schema stability before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/defi/uniswap/pools \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming it exists and accepts payments. However, there is no OpenAPI schema, no request/response examples, and all documentation pages are empty beyond a wallet-connect prompt. The actual request format and response structure are completely unknown, making this effectively a stub listing.
Warnings
- —No API documentation available — docs, pricing, and README pages all render only 'Connect wallet' with no content.
- —No OpenAPI or output schema provided; request body format and response fields are unknown.
- —No request or response examples available anywhere in crawled material.
- —Endpoint functionality is inferred solely from the URL path; actual behavior is unverified.
Citations
- —Endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/defi/uniswap/pools
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/defi/uniswap/pools
- —All APIs priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —Site offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com