# Smart Contract Interaction

### **Call Contract Method (Read-only)**

**You:**

```
Call the contract at ZTXcontract123... with the query method and show me the result
```

**Claude will:**

* Use `zetrix_call_contract` or `zetrix_sdk_call_contract`
* Execute in sandbox (no state changes)

**Example:**

```json
{
  "contractAddress": "ZTXcontract123...",
  "input": "{\"method\":\"balanceOf\",\"params\":{\"address\":\"ZTX3Ta...\"}}",
  "sourceAddress": "ZTX3Ta7d4GyAXD41H2kFCTd2eXhDesM83rvC3"
}
```

***

### **Invoke Contract (State Change)**

**You:**

```
Invoke the contract at ZTX3Uaci... to transfer tokens. 
Use my private key privbs...
Source address: ZTX3Ta7d...
Amount: 1000000
Input: {"method":"transfer","to":"ZTX3Xb...","amount":"500"}
```

**Claude will:**

* Use `zetrix_sdk_invoke_contract`
* Build, sign, and submit the contract transaction
* Return transaction hash and result

**Expected Response:**

```json
{
  "hash": "d4de93a5491462b5fc46254652e5f084c9f7c3f815c5b7b2..."
}
```

***


---

# 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.zetrix.com/en/developer-resources/zetrix-mcp-server/usage-example/smart-contract-interaction.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.