Struct PluginDeclaration 

#[repr(C)]
pub struct PluginDeclaration {
    pub api_version: *const u8,
    pub list_tools: ListToolsFn,
    pub execute_tool: ExecuteToolFn,
    pub free_string: FreeStringFn,
    pub configure: Option<ConfigureFn>,
    pub init: Option<InitFn>,
    pub get_config_schema: Option<GetConfigSchemaFn>,
}

Plugin declaration exported by each plugin

This structure must be exported as a static with the name plugin_declaration. Use the declare_plugin! macro for automatic version management.

Fields

api_version: *const u8

MCP Plugin API version the plugin was built against (e.g., “0.1.0”)

This is automatically set from the mcp-plugin-api crate version. The C ABI is stable across Rust compiler versions, so only the API version matters for compatibility checking.

list_tools: ListToolsFn

Returns list of tools as JSON array

See ListToolsFn for details.

execute_tool: ExecuteToolFn

Execute a tool by name

See ExecuteToolFn for details.

free_string: FreeStringFn

Function to free memory allocated by the plugin

See FreeStringFn for details.

configure: Option<ConfigureFn>

Optional configuration function called after plugin is loaded

See ConfigureFn for details.

init: Option<InitFn>

Optional initialization function called after configuration

See InitFn for details.

get_config_schema: Option<GetConfigSchemaFn>

Optional function to get configuration schema

See GetConfigSchemaFn for details.

Trait Implementations

impl Sync for PluginDeclaration