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Coin Railz Token Approval Transaction Generator
x402
Coin Railz Token Approval Transaction Generator is a paid API for AI agents from coinrailz.com, paid per call via x402, $0.2/call, status unknown (last checked 2026-09-15).
Generates ERC-20 token approval transactions required for DeFi agent interactions with smart contracts
Price / call$0.2
Success—
StatusUnknown
How this service works
Token approval transaction generator - required infrastructure for DeFi agents (B2B2C infrastructure)
Output
Returns a JSON object with success status, service name ('approval-manager'), a result message, and a UTC timestamp confirming the approval transaction was generated.
Example use cases
Automated liquidity provision setup
“I'm running a bot that provides liquidity on Curve Finance. I need to approve my DAI and USDC tokens so the pool contract can access them — generate those approval transactions right now.”
Batch token swap execution
“My agent is about to execute multiple swaps across different DEXes today. Can you generate approval transactions for USDT, WETH, and USDC tokens so everything is ready to go without delays?”
Yield farming bot initialization
“I'm deploying an AI agent to farm yield on Aave. It needs approval to deposit my stablecoins into the lending protocol. Please generate the token approval transaction so my agent can start farming immediately.”
Technical details
Endpoint
POSThttps://coinrailz.com/x402/approval-managerWhen to prefer
Use this endpoint when a DeFi agent needs to programmatically generate ERC-20 token approval transactions before executing swaps, liquidity provisions, or any smart contract interaction requiring token allowances. It is essential B2B2C infrastructure for automated trading bots and AI agents operating in DeFi environments where manual wallet approvals are not feasible.
Side effects
- Invalid token contract address returns error
- Invalid spender contract address returns error
- Insufficient USDC balance for $0.20 service fee
- Malformed wallet address causes transaction generation failure
- Unsupported chain or token standard returns error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| query | string | Query parameter for the service |
Output
Schema · Response
{
"type": "application/json",
"format": "json",
"example": {
"result": "Service executed successfully",
"service": "approval-manager",
"success": true,
"timestamp": "2026-02-07T01:49:56.224Z"
}
}Tags
x402
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