Compound DeFi APY data via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint provides Compound protocol APY (Annual Percentage Yield) data through a pay-per-call x402 micropayment model settled in USDC on the Base network. It is part of a broader suite of APIs offered by lowpaymentfee.com covering DeFi, finance, AI/ML, analytics, and utility services, all priced at $0.02 per request.
The endpoint accepts POST requests and returns JSON. Payment is handled via the x402 protocol: callers include an X-PAYMENT header with a signed payment of up to 20,000 base units of USDC (i.e., $0.02) to the provider's address on Base. No API keys, accounts, or rate limits are required — access is purely payment-gated.
Documentation beyond the landing page is sparse. The docs, API, pricing, and README pages all resolve to a minimal "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The specific fields returned by the Compound APY endpoint (e.g., which markets, supply vs. borrow APY, time ranges) are not documented and must be discovered by calling the endpoint.
Capabilities
Use cases
- —Fetching current Compound protocol APY rates for portfolio dashboards
- —Comparing DeFi lending/borrowing yields programmatically
- —Automated yield farming strategy evaluation
- —Agent-driven DeFi analytics and reporting
Fit
Best for
- —AI agents needing on-demand DeFi yield data without API key management
- —Developers building DeFi dashboards who want simple pay-per-call pricing
- —Automated systems that need Compound APY data with minimal integration overhead
Not for
- —High-frequency polling where $0.02 per request adds up quickly
- —Users who need detailed historical APY time series (not documented)
- —Anyone requiring comprehensive multi-protocol DeFi data in a single call
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/defi/compound/apy \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-signed-payment>"Endpoint
Quality
The endpoint is live (returns a valid x402 402 challenge) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no example payloads, and all documentation pages beyond the landing page are empty stubs. The specific data returned by this Compound APY endpoint is entirely undocumented.
Warnings
- —No OpenAPI or schema documentation available — request and response formats are unknown
- —All doc/pricing/API/README pages return only a 'Connect wallet' prompt with no content
- —The specific Compound markets, APY types, and response fields are not documented anywhere in the crawl
- —This endpoint is part of a large suite of APIs that all appear to share the same generic 'Premium API Access' description, raising questions about whether all endpoints are fully implemented
Citations
- —Endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units USDC on Basehttps://lowpaymentfee.com/api/v1/defi/compound/apy
- —All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is USDC on Basehttps://lowpaymentfee.com/api/v1/defi/compound/apy