mcp_tool_message Struct Reference

Message sent from a tool (response/notification). More...

#include <zephyr/net/mcp/mcp_server.h>

Data Fields
enum mcp_tool_msg_type	type
	Type of message.
int	length
	Message length.
void *	data
	Message data pointer.
bool	is_error
	Signifies if message is error.

Detailed Description

Message sent from a tool (response/notification).

This structure is used to submit tool execution results back to the MCP server.

Note

For tool responses (MCP_USR_TOOL_RESPONSE):

• data should point to a plain text string containing the tool result. The server wraps this into a single MCP TextContent item automatically.
• Maximum length is CONFIG_MCP_TOOL_RESULT_MAX_LEN.
• is_error should be set to true if the tool execution failed.
• Example: .data = "Tool execution result"

Field Documentation

data

void* mcp_tool_message::data

Message data pointer.

is_error

bool mcp_tool_message::is_error

Signifies if message is error.

length

int mcp_tool_message::length

Message length.

type

enum mcp_tool_msg_type mcp_tool_message::type

Type of message.

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The documentation for this struct was generated from the following file:

• zephyr/net/mcp/mcp_server.h