Yearn Finance pool data via x402 micropayment on Base network, $0.02 per request.
What it does
This endpoint provides DeFi pool data from Yearn Finance, accessible through the x402 payment protocol on the Base network. Each request costs $0.02 (20,000 base units of USDC with 6 decimals) and requires no API keys, rate limits, or subscriptions — just a per-call micropayment in USDC on Base.
The endpoint is part of a broader platform at lowpaymentfee.com that offers various pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities, all priced at $0.02 per request. The x402 challenge confirms the endpoint is live and accepts POST requests with JSON responses.
Specific details about the response schema (e.g., which Yearn pool fields are returned — APY, TVL, token composition, etc.) are not documented in the available crawl material. The docs, pricing, and API pages all require wallet connection and provide no additional technical documentation. Users should expect a JSON response containing Yearn pool information, but the exact structure is unspecified.
Capabilities
Use cases
- —Retrieve current Yearn Finance pool data for portfolio dashboards
- —Automate DeFi yield comparisons across Yearn pools
- —Feed Yearn pool metrics into trading bots or analytics pipelines
- —Agent-driven DeFi research without managing API keys
Fit
Best for
- —AI agents needing on-demand DeFi pool data without subscription overhead
- —Developers building yield aggregator dashboards
- —Automated trading systems comparing DeFi yields
Not for
- —High-frequency polling where per-request costs accumulate quickly
- —Users needing detailed API documentation before integration
- —Historical time-series pool data (no evidence this is supported)
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/defi/yearn/pools \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is confirmed live via 402 challenge with clear pricing, but there is no documentation of request parameters, response schema, or example responses. The docs pages all just show 'Connect wallet' with no technical content.
Warnings
- —No API documentation available — response schema is unknown
- —No example requests or responses provided
- —All doc/pricing/API pages require wallet connection and contain no readable content
- —Unclear what specific Yearn pool data fields are returned
Citations
- —Endpoint returns 402 with x402 challenge accepting USDC on Base network at 20000 base units (~$0.02)https://lowpaymentfee.com/api/v1/defi/yearn/pools
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/defi/yearn/pools