Struct TodoListMiddleware 

pub struct TodoListMiddleware { /* private fields */ }

Adds task-planning capability to an agent by injecting a todo list into the system prompt.

The middleware maintains a shared todo list. Before each model call, it appends the current todo state to the system prompt, giving the model awareness of remaining tasks.

Implementations

impl TodoListMiddleware

pub fn new() -> Self

pub async fn add(&self, task: impl Into<String>) -> usize

Add a task to the todo list.

pub async fn complete(&self, id: usize) -> bool

Mark a task as done.

pub async fn items(&self) -> Vec<TodoItem>

Get all items.

Trait Implementations

impl AgentMiddleware for TodoListMiddleware

fn before_model<'life0, 'life1, 'async_trait>( &'life0 self, request: &'life1 mut ModelRequest, ) -> Pin<Box<dyn Future<Output = Result<(), SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Called before each model invocation. Can modify the request.

fn before_agent<'life0, 'life1, 'async_trait>( &'life0 self, _messages: &'life1 mut Vec<Message>, ) -> Pin<Box<dyn Future<Output = Result<(), SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Called once when the agent starts executing.

fn after_agent<'life0, 'life1, 'async_trait>( &'life0 self, _messages: &'life1 mut Vec<Message>, ) -> Pin<Box<dyn Future<Output = Result<(), SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Called once when the agent finishes executing.

fn after_model<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _request: &'life1 ModelRequest, _response: &'life2 mut ModelResponse, ) -> Pin<Box<dyn Future<Output = Result<(), SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Called after each model invocation. Can modify the response.

fn wrap_model_call<'life0, 'life1, 'async_trait>( &'life0 self, request: ModelRequest, next: &'life1 dyn ModelCaller, ) -> Pin<Box<dyn Future<Output = Result<ModelResponse, SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Wraps the model call. Override to intercept or replace the model invocation.

fn wrap_tool_call<'life0, 'life1, 'async_trait>( &'life0 self, request: ToolCallRequest, next: &'life1 dyn ToolCaller, ) -> Pin<Box<dyn Future<Output = Result<Value, SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Wraps a tool call. Override to intercept or replace tool execution.

impl Default for TodoListMiddleware

fn default() -> Self

Returns the “default value” for a type.