YFI liquidity data via x402 micropayment on Base network, $0.02 per request.
What it does
This endpoint provides DeFi liquidity data for the YFI (yearn.finance) token, accessible via the x402 payment protocol. It is part of a broader suite of APIs offered by lowpaymentfee.com covering data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and no commitments required.
Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The x402 challenge confirms the endpoint is live and accepts POST requests. The maxAmountRequired is 20000 base units of USDC (6 decimals), which equals $0.02 USD per call. The endpoint returns application/json responses.
Documentation beyond the landing page is extremely sparse — the /docs, /api, /pricing, and /README pages all appear to require wallet connection and provide no additional content. There is no OpenAPI schema, no example request/response payloads, and no detailed description of the data fields returned. The specific structure of the YFI liquidity response must be discovered by making a paid request.
Capabilities
Use cases
- —Querying current liquidity metrics for YFI across DeFi protocols
- —Building dashboards that track YFI liquidity depth over time
- —Automated trading bots that factor in YFI liquidity before executing trades
- —Portfolio analytics tools needing on-demand DeFi liquidity snapshots
Fit
Best for
- —Agents or bots that need pay-per-call DeFi data without API key management
- —Developers prototyping DeFi dashboards who want instant access
- —Low-volume consumers who prefer micropayments over monthly subscriptions
Not for
- —High-frequency trading requiring sub-second latency guarantees (no SLA documented)
- —Users who need comprehensive historical liquidity data (no evidence of historical support)
- —Anyone needing detailed documentation or schema before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/defi/YFI/liquidity \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) with clear pricing ($0.02 USDC on Base), but there is no OpenAPI schema, no request/response examples, and all documentation pages are gated behind wallet connection. The actual data returned is unknown, making this effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available — response structure is unknown
- —All doc pages (/docs, /api, /pricing, /README) return only a wallet-connect prompt with no content
- —No example request or response payloads could be obtained
- —The specific endpoint /api/v1/defi/YFI/liquidity is not listed on the landing page; only broader categories are shown — this specific route may be undocumented or auto-generated
Citations
- —Endpoint returns HTTP 402 with x402 challenge, confirming it is livehttps://lowpaymentfee.com/api/v1/defi/YFI/liquidity
- —Payment is 20000 base units of USDC (6 decimals = $0.02) on Base networkhttps://lowpaymentfee.com/api/v1/defi/YFI/liquidity
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/defi/YFI/liquidity
- —Site advertises $0.02/request, no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —Documentation pages (/docs, /api, /pricing, /README) show only 'Connect wallet' with no further contenthttps://lowpaymentfee.com/docs