> ## Documentation Index > Fetch the complete documentation index at: https://docs.blinkops.com/llms.txt > Use this file to discover all available pages before exploring further. # Count Message Tokens Get the number of tokens required for creating a message, including tools, images, and documents, without creating it. External Documentation To learn more, visit the [Anthropic documentation](https://docs.anthropic.com/en/api/messages-count-tokens). ## Basic Parameters
| Parameter | Description | | ------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Disable Parallel Tool Use | When checked - restrict the model to use at most one tool at a time and preventing parallel tool usage. | | Messages | The content of the current conversation with the model.

For example:
\[
  \{"role": "user", "content": "Hello there."},
  \{"role": "assistant", "content": "Hi, I'm Claude. How can I help you?"},
  \{"role": "user", "content": "Can you explain LLMs in plain English?"}
]
For more information about the `Messages` parameter, visit [Anthropic documentation](https://docs.anthropic.com/en/docs/about-claude/models/all-models) for more details. | | Model | The model that will complete your prompt. | | Thinking | When set to `enabled`, responses include thinking content blocks showing the model's thinking process before the final answer.

**Note**: Requires a minimum budget of `1024` tokens.

For more information about the `Thinking` parameter, visit [Anthropic documentation](https://docs.anthropic.com/en/docs/build-with-claude/extended-thinking). | | Thinking Budget Tokens | The number of tokens the model can use for its internal reasoning process. Larger budgets can enable more thorough analysis for complex problems which improves response quality.

**Note**: Must be higher than `1024` and less than the `Max Tokens` value. | | Tool Choice | Define how the model should use the provided tools.

The model can:
\* `auto` - Decide by itself.
\* `any` - Use any available tool.
\* `tool` - Use a specific tool.
\* `none` - Not use tools at all.

**Note**: This parameter may only be specified while providing `Tools`. | | Tool Choice Name | The name of the tool to use. | | Tools | Definitions of tools that the model may use.

Each tool definition includes:
\* `name` - Name of the tool.
\* `description` - Optional, but strongly-recommended description of the tool.
\* `input_schema` - JSON schema for the tool input shape that the model will produce in `tool_use` output content blocks.

For example:
\[
  \{
    "name": "get\_stock\_price",
    "description": "Get the current stock price for a given ticker symbol.",
    "input\_schema": \{
      "type": "object",
      "properties": \{
        "ticker": \{
          "type": "string",
          "description": "The stock ticker symbol, e.g. AAPL for Apple Inc."
        }
      },
      "required": \["ticker"]
    }
  }
]
For more information about the `Tools` parameter, visit [Anthropic documentation](https://docs.anthropic.com/en/api/messages#body-tools). |
## Advanced Parameters
| Parameter | Description | | ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | System Instructions | Context and instructions to provide to the model, such as specifying a particular goal or role.

For example:
You are a seasoned data scientist at a Fortune 500 company.
For more information about the `System` parameter, visit [Anthropic documentation](https://docs.anthropic.com/en/docs/build-with-claude/prompt-engineering/system-prompts). |
## Example Output ```json theme={"dark"} { "input_tokens": 2095 } ``` ## Workflow Library Example [Count Message Tokens with Anthropic and Send Results Via Email](https://library.blinkops.com/workflows/count-message-tokens-with-anthropic-and-send-results-via-email)
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