Returns a small test image to demonstrate image content in MCP tool responses.

Returns: A base64-encoded 1x1 PNG image as image content

Demonstrates LLM sampling capability using the MCP sampling feature. Requests the MCP client to sample from an LLM on behalf of this tool.

Args: prompt: The prompt to send to the LLM maxTokens: Maximum number of tokens to generate (default: 100)

Returns: The generated LLM response text

Returns a resource reference that can be used by MCP clients to fetch a resource. The resource ID must be between 1 and 100.

Args: resourceId: ID of the resource to reference (1-100)

Returns: A list containing a text introduction, an embedded resource reference, and instructions for using the resource URI

Demonstrates MCP elicitation by requesting structured input from the user via the MCP client. Elicitation allows servers to interactively ask users for information during a tool call.

Args: message: The prompt message to display to the user (default: "Please provide your name:")

Returns: The user's response from the elicitation, or an error if not supported

Lists the current MCP roots as reported by the connected MCP client. Roots define the filesystem or URI boundaries the client exposes to the server.

Returns: A formatted list of roots provided by the client, or an indication that the client does not support roots

Echo a message back to the client.

Args: message: The message to echo

Returns: The echoed message with any configured prefix

Add two numbers together. Use this tool when you need to sum or add two numbers.

Args: a: The first number to add b: The second number to add

Returns: The sum of the two numbers

Returns structured content that conforms to a well-defined JSON schema. Demonstrates MCP's structured output / schema-validated tool responses.

Args: includeOptionalFields: Whether to include optional fields in the response (default: False)

Returns: A structured dict with schema-validated fields

Demonstrates a long-running operation with progress notifications.

Args: duration: Total duration of the operation in seconds (default: 10) steps: Number of progress steps to report (default: 5)

Returns: Completion message with duration and steps info

Demonstrates different annotation patterns for MCP tool responses. Returns content with metadata annotations based on the message type.

Args: messageType: Type of message to demonstrate - "error", "success", or "debug" includeImage: Whether to include an example image in the response (default: False)

Returns: Annotated content demonstrating MCP annotation capabilities

Prints all current environment variables. Useful for debugging server configuration and available environment context.

Returns: A formatted list of all environment variables