# x402 Trading Hub - Wallet Approvals

> x402 Trading Hub - Wallet Approvals is a paid API for AI agents from trading-hub-v4-omega.vercel.app, paid per call via x402, $0.15/call, status unknown (last checked 2026-11-06).

Submits or retrieves on-chain wallet token approval transactions for trading operations

## Facts

- Endpoint: POST https://trading-hub-v4-omega.vercel.app/api/wallet/approvals?utm_source=zero.xyz
- Price: $0.15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-06
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-trading-hub-wallet-approvals-510310cd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rPWgdefr_vxT715C66N_N

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402-trading-hub-wallet-approvals-510310cd -d '<json body>'
```

Example prompt: Approve USDC spending for my wallet 0xABC...123 so the trading contract at 0xDEF...456 can spend up to 1000 USDC on Base mainnet before I execute my swap.

## When to prefer this

Use this endpoint when you need to programmatically submit or manage ERC-20 token approvals as part of a DeFi or on-chain trading workflow within the x402 Trading Hub ecosystem. Prefer this over manual wallet interactions when automating multi-step trading pipelines that require approval before swap or deposit steps, or when building agents that orchestrate on-chain transactions end-to-end.

## Known failure modes

- Insufficient gas or gas estimation failure causing transaction revert
- Invalid wallet address or spender contract address format
- Chain ID mismatch or unsupported network
- Token contract not found or non-ERC-20 contract
- Approval amount exceeds balance or max uint256 overflow
- Missing or malformed required fields in request body returning 400
- Payment not received or x402 payment header invalid returning 402
- Transaction pending timeout on slow networks

## How this service works

67 paid endpoints for on-chain, forex, stocks &amp; market intelligence

## Output

Returns confirmation of the wallet approval transaction including the transaction hash, approval status, the spender address authorized, the approved token amount, and optionally the on-chain receipt or block confirmation details.

## Request schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-trading-hub-wallet-approvals-510310cd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from trading-hub-v4-omega.vercel.app](https://www.zero.xyz/host/trading-hub-v4-omega.vercel.app/llms.txt)