Pay-per-use DeFi yield intelligence with risk-adjusted allocation recommendations via x402 micropayments.
What it does
The Silverback `/api/v1/defi-yield` endpoint provides risk-adjusted DeFi yield intelligence. Given a token (symbol like USDC, WETH, SOL, or a contract address) and an optional risk tolerance level (low, medium, or high), it returns yield opportunities with APR data, risk scores, and portfolio allocation recommendations. The endpoint costs $0.03 per call, paid in USDC via the x402 micropayment protocol.
Silverback is part of a broader suite of 11 DeFi intelligence and execution endpoints covering swap routing, technical analysis, arbitrage scanning, token audits, whale tracking, wallet portfolios, pool analysis, holder analytics, and Jupiter (Solana) quotes. All endpoints use the x402 protocol: an initial request returns a 402 Payment Required challenge, the caller signs a USDC authorization (on Base, Solana, or SKALE), and resubmits with a payment proof header to receive the JSON response. No subscriptions or API keys are required.
The endpoint accepts POST requests with a JSON body. Both parameters (`token` and `riskTolerance`) are optional, so a bare POST with an empty body should return general yield opportunities. Responses include a `success` boolean field. The API is hosted on Render and confirmed live via a 402 challenge response during probing.
Capabilities
Use cases
- —AI agents autonomously scanning for the best yield opportunities across DeFi protocols
- —Portfolio managers evaluating risk-adjusted returns before allocating capital
- —Bots comparing yield rates across protocols for a specific token
- —Building dashboards that display current DeFi yield opportunities with risk scores
Fit
Best for
- —Autonomous DeFi agents needing on-demand yield data without API keys
- —Developers building yield comparison tools with pay-per-call pricing
- —Agents that need risk-scored yield recommendations for portfolio allocation
Not for
- —High-frequency polling where $0.03 per call adds up quickly
- —Users who need historical yield time-series data (endpoint returns current opportunities)
- —Direct yield farming execution — this is intelligence only, not an execution endpoint
Quick start
curl -X POST https://silverback-x402.onrender.com/api/v1/defi-yield \
-H "Content-Type: application/json" \
-d '{"token": "USDC", "riskTolerance": "medium"}'Example
Request
{
"token": "USDC",
"riskTolerance": "medium"
}Endpoint
Quality
Full OpenAPI schema with clear endpoint descriptions and pricing. The endpoint is confirmed live (402 challenge captured). However, no example response body is available, the external docs link returns a 404, and response schema details are absent, preventing a higher score.
Warnings
- —No example response body available — response structure is inferred from the OpenAPI description only
- —External docs at https://docs.silverbackdefi.app/ were not crawled and the /docs path on the server returns 404
- —Response schema is not defined in the OpenAPI spec; only a text description ('Yield opportunities with APR, risk scores, and allocation') is provided
- —The x402 challenge object captured was empty, so payment network details (Base/Solana/SKALE) come from the OpenAPI guidance text only
Citations
- —The defi-yield endpoint costs $0.03 per call (heavy analysis tier)https://silverback-x402.onrender.com
- —Silverback provides 11 pay-per-use DeFi intelligence endpoints via x402 micropaymentshttps://silverback-x402.onrender.com
- —Payments accepted in USDC on Base, Solana, and SKALEhttps://silverback-x402.onrender.com
- —The defi-yield endpoint accepts token and riskTolerance parameters and returns yield opportunities with APR, risk scores, and allocationhttps://silverback-x402.onrender.com
- —The endpoint returned a 402 status confirming it is livehttps://silverback-x402.onrender.com/api/v1/defi-yield