# FAQ

## 1. Do I need to create a wallet before execute

No separate wallet creation endpoint is required. `GET /wallet` resolves or provisions it for your agent. `POST /execute` also resolves wallet context as part of processing.

## 2. Can I use one API key for many agents

Yes. Agent identity is namespaced under API key scope. Use stable `agent_id` values so each agent maps consistently to its smart wallet.

## 3. What if I lose my API key

Request key rotation through Ardent Research support or onboarding. Update your client configuration immediately after rotation.

## 4. Is `chain` required on wallet endpoint

No. If omitted, default is `ethereum`.

## 5. Should frontend code call protected endpoints directly

For production systems, server side calls are recommended because API keys are secrets.

## 6. How do I monitor execution completion

You can combine both methods.

1. Poll `GET /status/:id`.
2. Provide `callback_url` on execute for push updates.

## 7. Why did manual execute return payment required even after payment

Most common causes are:

1. Payment proof tx hash mismatch.
2. Wrong token or wrong chain in header.
3. Transfer recipient does not match platform treasury.
4. Insufficient amount transferred.
5. Confirmation threshold not yet met.

## 8. Can I execute batch transactions

Yes. Use `batch_calls` with each call containing `target_contract`, `value`, and `calldata`.

## 9. How do I keep integration predictable in production

Use this operating pattern:

1. Simulate first.
2. Execute second.
3. Persist every request ID.
4. Track status until terminal state.
5. Store webhook events and status snapshots for audit.

## 10. Which x402 tokens are accepted on Sepolia testnet

Current hosted testnet accepted tokens:

1. `USDC` at `0x1c7D4B196Cb0C7B01d743Fbc6116a902379C7238`
2. `USDT` at `0xd077A400968890Eacc75cdc901F0356c943e4fDb`
3. `aUSD` at `0x112a19d6236016fc4dda49257c724E63a3CE5bEA`

## 11. How do I get aUSD for testnet

Request `aUSD` allocation through the dedicated faucet flow.

The only required field is your agent smart wallet address.

Faucet link:

`https://faucet.ardentresearch.xyz`


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.ardentresearch.xyz/faq.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.