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defiexec-build
x402
defiexec-build is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-11).
Generates ready-to-sign transaction calldata for depositing into or redeeming from Base DeFi yield protocols (Aave v3, Compound v3, ERC-4626) without custody of user funds
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 yield action, an ERC-20 approval object (for deposits), and the expected number of shares (on deposit) or underlying assets (on redeem) based on live on-chain protocol state.
Example use cases
Example prompt
“Build me the deposit calldata to supply 1000000000 raw USDC into Aave v3 on Base — the recipient wallet is 0xAbC123... — I need the approval calldata and expected shares too so I can sign and broadcast it myself.”
Technical details
Endpoint
GEThttps://payai.agentstools.dev/yield/build?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need actual ready-to-sign transaction calldata to execute a yield deposit or redeem on Base, not just a preview of rates. Choose this over defiexec-preview when you are ready to broadcast a transaction. Prefer this over manual ABI encoding when you need correct calldata including approval steps without implementing protocol-specific logic. Ideal for non-custodial agent workflows where the agent prepares the transaction but the user signs with their own wallet.
Side effects
- Invalid or unsupported asset symbol returns an error indicating asset not found
- Vault address not resolvable on-chain returns a resolution failure
- Amount of 'max' used with deposit action (only valid for redeem) returns validation error
- Unsupported protocol enum value returns a 400-style validation error
- On-chain RPC failure or network congestion may cause timeout or stale state error
- Compound v3 asset that is not the base asset returns unsupported asset error
- Malformed recipient address returns address validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
Reviews
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