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defiexec-build
x402
defiexec-build is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Generates ready-to-sign EVM calldata for depositing into or redeeming from Aave v3, Compound v3, or any ERC-4626 vault on Base, including ERC-20 approval calldata and expected output amounts.
Price / call$0.05
Success—
StatusUnknown
How this service works
Non-custodial yield deposit/redeem calldata for Base: give protocol (aave-v3, compound-v3 or erc4626), asset or vault, raw amount, action and recipient; we read the protocol on-chain state and return ready-to-sign transaction calldata plus the ERC-20 approval (deposit only) and the expected shares or assets. You sign with your own wallet — we never hold or move funds.
Output
Returns ready-to-sign transaction calldata for the deposit or redeem action, an ERC-20 approval calldata object (for deposits), and the expected number of shares (on deposit) or underlying assets (on redeem) based on current on-chain protocol state.
Example use cases
Aave v3 USDC yield deposit
“Generate the calldata to deposit 500000000 raw USDC into Aave v3 on Base, with recipient 0xDEAD...BEEF — I want the ERC-20 approval data and how many aTokens I should expect back.”
Compound v3 max redeem
“Build me the redeem calldata for Compound v3 on Base to withdraw max USDC to my wallet 0x1234...5678 — I want to pull everything out at once.”
ERC-4626 vault share redemption
“I want to redeem 200000000 shares from the ERC-4626 vault at 0xVault...Addr on Base back to 0xMyWallet...here — can you give me the ready-to-sign transaction calldata?”
Technical details
Endpoint
GEThttps://api.agentstools.dev/yield/buildWhen to prefer
Use this endpoint when you need non-custodial, ready-to-sign calldata for Base yield protocols (Aave v3, Compound v3, or any ERC-4626 vault) without connecting to a wallet SDK or writing contract interaction code. Ideal for AI agents that need to automate DeFi yield strategies while keeping the user in full custody of their funds.
Side effects
- Unsupported protocol specified — only aave-v3, compound-v3, erc4626 accepted
- Invalid or unrecognized asset symbol for the specified protocol
- Vault address not resolvable on-chain for erc4626
- Amount of zero or malformed raw amount string
- Invalid recipient address format
- Compound III requested with non-base asset — only base asset earns yield
- On-chain state read failure or RPC timeout
- Payment not received — x402 payment required before response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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