Struct CollectedCapabilities 

pub struct CollectedCapabilities {
    pub system_prompt_parts: Vec<String>,
    pub system_prompt_attributions: Vec<SystemPromptAttribution>,
    pub tools: Vec<Box<dyn Tool>>,
    pub tool_definitions: Vec<ToolDefinition>,
    pub mounts: Vec<MountPoint>,
    pub message_filter_providers: Vec<(Arc<dyn MessageFilterProvider>, Value)>,
    pub applied_ids: Vec<String>,
    pub tool_search: Option<ToolSearchConfig>,
    pub prompt_cache: Option<PromptCacheConfig>,
    pub tool_definition_hooks: Vec<Arc<dyn ToolDefinitionHook>>,
    pub tool_call_hooks: Vec<Arc<dyn ToolCallHook>>,
    pub mcp_servers: ScopedMcpServers,
}

Collected data from capabilities before applying to config.

This intermediate struct allows sharing the capability collection logic between apply_capabilities and apply_capabilities_to_builder.

Fields

system_prompt_parts: Vec<String>

System prompt additions (in order)

system_prompt_attributions: Vec<SystemPromptAttribution>

Source attribution for each system prompt addition.

tools: Vec<Box<dyn Tool>>

Tool implementations for the registry

tool_definitions: Vec<ToolDefinition>

Tool definitions for config

mounts: Vec<MountPoint>

Mount points from capabilities

message_filter_providers: Vec<(Arc<dyn MessageFilterProvider>, Value)>

Message filter providers with their configs (in priority order)

applied_ids: Vec<String>

IDs of capabilities that were collected

tool_search: Option<ToolSearchConfig>

Tool search configuration (set when openai_tool_search capability is present)

prompt_cache: Option<PromptCacheConfig>

Prompt caching configuration (set when prompt_caching capability is present)

tool_definition_hooks: Vec<Arc<dyn ToolDefinitionHook>>

Hooks that transform the final runtime tool definition list.

tool_call_hooks: Vec<Arc<dyn ToolCallHook>>

Hooks that inspect or transform model-produced tool calls.

mcp_servers: ScopedMcpServers

Scoped remote MCP servers contributed by capabilities.

Implementations

impl CollectedCapabilities

pub fn system_prompt_prefix(&self) -> Option<String>

Returns the combined system prompt prefix from all capabilities. Returns None if no capabilities contributed system prompt additions.

pub fn apply_message_filters(&self, query: &mut MessageQuery)

Apply all collected message filter providers to a query.

Providers are applied in priority order (lower priority first).

pub fn apply_post_load_filters(&self, messages: &mut Vec<Message>)

Apply post-load transforms from all message filter providers. Called after messages are loaded, filtered, and injected.

pub fn has_message_filters(&self) -> bool

Check if any capabilities contribute message filters.