Prompts in the client

List Prompts Functionality

• Call self. session. list_prompts() to retrieve all prompts defined in the MCP server
• Return result. prompts to get the list of available prompts

Get Prompt Functionality

• Call self. session. get_prompt() with two parameters:
• prompt name: identifies which prompt to retrieve
• arguments: dictionary of variables to interpolate into the prompt
• Return result. messages which contains the formatted conversation to send to Claude
• Arguments passed to get_prompt become keyword arguments in the prompt function

Prompt Workflow

• Define a prompt in the MCP server with placeholders for arguments (e. g. , document ID)
• Client requests the prompt by name and provides argument values
• Server interpolates arguments into the prompt template
• Client receives formatted messages ready to send to Claude
• Claude receives both the prompt instructions and the interpolated data (e. g. , document ID)
• Claude can then use available tools to complete the task

Example: Format Document Prompt

• Prompt name: "format"
• Argument: document ID
• Claude receives instructions to format a document and the ID of which document to format
• Claude uses the get_document tool to fetch content, then returns formatted result

Takeaways

• Call self. session. list_prompts() to retrieve all available prompts from the MCP server
• Call self. session. get_prompt(prompt_name, arguments) with a prompt name and dictionary of variables to get formatted messages ready for Claude
• Prompts use argument interpolation: client provides values that get inserted into the prompt template, allowing Claude to receive both instructions and specific data (like document IDs) needed to complete tasks