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agent-client-protocol 0.3.1

A protocol for standardizing communication between code editors and AI coding agents
Documentation 
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//! Execution plans for complex tasks that require multiple steps.
//!
//! Plans are strategies that agents share with clients through session updates,
//! providing real-time visibility into their thinking and progress.
//!
//! See: [Agent Plan](https://agentclientprotocol.com/protocol/agent-plan)

use schemars::JsonSchema;
use serde::{Deserialize, Serialize};

/// An execution plan for accomplishing complex tasks.
///
/// Plans consist of multiple entries representing individual tasks or goals.
/// Agents report plans to clients to provide visibility into their execution strategy.
/// Plans can evolve during execution as the agent discovers new requirements or completes tasks.
///
/// See protocol docs: [Agent Plan](https://agentclientprotocol.com/protocol/agent-plan)
#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
#[serde(rename_all = "camelCase")]
pub struct Plan {
    /// The list of tasks to be accomplished.
    ///
    /// When updating a plan, the agent must send a complete list of all entries
    /// with their current status. The client replaces the entire plan with each update.
    pub entries: Vec<PlanEntry>,
    /// Extension point for implementations
    #[serde(skip_serializing_if = "Option::is_none", rename = "_meta")]
    pub meta: Option<serde_json::Value>,
}

/// A single entry in the execution plan.
///
/// Represents a task or goal that the assistant intends to accomplish
/// as part of fulfilling the user's request.
/// See protocol docs: [Plan Entries](https://agentclientprotocol.com/protocol/agent-plan#plan-entries)
#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
#[serde(rename_all = "camelCase")]
pub struct PlanEntry {
    /// Human-readable description of what this task aims to accomplish.
    pub content: String,
    /// The relative importance of this task.
    /// Used to indicate which tasks are most critical to the overall goal.
    pub priority: PlanEntryPriority,
    /// Current execution status of this task.
    pub status: PlanEntryStatus,
    /// Extension point for implementations
    #[serde(skip_serializing_if = "Option::is_none", rename = "_meta")]
    pub meta: Option<serde_json::Value>,
}

/// Priority levels for plan entries.
///
/// Used to indicate the relative importance or urgency of different
/// tasks in the execution plan.
/// See protocol docs: [Plan Entries](https://agentclientprotocol.com/protocol/agent-plan#plan-entries)
#[derive(Deserialize, Serialize, JsonSchema, Debug, Clone)]
#[serde(rename_all = "snake_case")]
pub enum PlanEntryPriority {
    /// High priority task - critical to the overall goal.
    High,
    /// Medium priority task - important but not critical.
    Medium,
    /// Low priority task - nice to have but not essential.
    Low,
}

/// Status of a plan entry in the execution flow.
///
/// Tracks the lifecycle of each task from planning through completion.
/// See protocol docs: [Plan Entries](https://agentclientprotocol.com/protocol/agent-plan#plan-entries)
#[derive(Deserialize, Serialize, JsonSchema, Debug, Clone)]
#[serde(rename_all = "snake_case")]
pub enum PlanEntryStatus {
    /// The task has not started yet.
    Pending,
    /// The task is currently being worked on.
    InProgress,
    /// The task has been successfully completed.
    Completed,
}