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DeFi Yield Preview (Base)
x402
DeFi Yield Preview (Base) is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns expected shares/assets and safety flags for a proposed yield deposit or redeem on Base, without building the full transaction calldata.
Price / call$0.01
Success—
StatusUnknown
How this service works
Lightweight yield preview for Base without calldata: give protocol, asset or vault, raw amount and action and get the expected shares or assets and the safety flags (paused/frozen/cap, empty-vault inflation risk). A cheap check before you build the full transaction.
Output
Returns the expected output amount (shares for a deposit, or underlying assets for a redeem) in raw atomic units, along with safety flags indicating whether the protocol or vault is paused, frozen, at capacity, or at risk of share inflation (for empty ERC-4626 vaults). This is a read-only simulation — no transaction is built or submitted.
Example use cases
Safe Aave deposit preflight check
“I want to deposit 5000000000 raw USDC into Aave v3 on Base — can you preview the expected aTokens I'd receive and tell me if there are any safety issues like the pool being paused or at cap?”
ERC-4626 vault redeem simulation
“I'm about to redeem 250000 shares from this ERC-4626 vault on Base at address 0xAbC123... — can you simulate what underlying assets I'd get back and flag any inflation or empty-vault risks before I build the transaction?”
Compound v3 deposit safety check
“Check what I'd get depositing 2000000000 raw USDC into Compound v3 on Base and let me know if the market is frozen or at its supply cap before I proceed.”
Technical details
Endpoint
GEThttps://api.agentstools.dev/yield/previewWhen to prefer
Use this endpoint as a cheap read-only preflight step before calling defiexec-build to construct the actual calldata. It is ideal when you need to verify expected output amounts, check safety flags, or confirm a vault is not paused/frozen/at-cap before committing to a transaction. Prefer it over directly building a transaction when you want to surface risks (e.g. ERC-4626 inflation attacks on empty vaults) without spending gas or exposing private keys. It covers Aave v3, Compound v3, and any Base ERC-4626 vault.
Side effects
- Unknown or unsupported asset symbol returns an error
- Invalid vault address that cannot be resolved on-chain
- Amount of zero or non-numeric amount string
- Protocol enum value not one of aave-v3, compound-v3, erc4626
- Vault is resolvable but empty, triggering inflation risk flag rather than a hard error
- Network or RPC timeout when fetching on-chain state
- Payment failure (x402) if USDC payment not included
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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