Crate agent_base 

Re-exports

pub use engine::AgentBuilder;

pub use engine::AgentRuntime;

pub use engine::AgentSession;

pub use engine::DefaultPipeline;

pub use engine::InMemorySessionStore;

pub use engine::QueueMode;

pub use engine::SessionStore;

pub use engine::ToolExecutionPipeline;

pub use engine::AllowAllApprovalHandler;

pub use engine::ApprovalHandler;

pub use engine::ConsecutiveFailureRecovery;

pub use engine::ContextCompaction;

pub use engine::ContextWindowManager;

pub use engine::DenyAllApprovalHandler;

pub use engine::Middleware;

pub use engine::NoopGuard;

pub use engine::PostLlmCtx;

pub use engine::PreLlmCtx;

pub use engine::ReactLoopGuard;

pub use engine::RetryOnError;

pub use engine::StopOnError;

pub use engine::ToolEnforcementConfig;

pub use engine::ToolEnforcementMiddleware;

pub use engine::ToolErrorAction;

pub use engine::ToolErrorRecovery;

pub use engine::TurnFactMiddleware;

pub use engine::TurnToolLimitMiddleware;

pub use engine::UserMessageCtx;

pub use engine::estimate_messages_tokens;

pub use engine::first_system_prompt;

pub use tool::AutoContinueTool;

pub use tool::DenyAllToolPolicy;

pub use tool::Tool;

pub use tool::ToolContext;

pub use tool::ToolDecision;

pub use tool::ToolPolicy;

pub use tool::ToolRegistry;

pub use tool::TypedTool;

pub use tool::UpdatePlanTool;

pub use types::RuntimeEvent;

pub use types::UserEvent;

pub use types::AgentError;

pub use types::AgentResult;

pub use types::ErrorKind;

pub use types::AgentConfig;

pub use types::Language;

pub use types::Message;

pub use types::RetryConfig;

pub use types::SafetyConfig;

pub use types::SessionConfig;

pub use types::TurnContext;

pub use llm_trait;

Modules

engine

llm

LLM provider integration.

prelude

tool

types

Structs

ActivationContext

Context passed to Tool::should_activate for Deferred tools.

ApprovalRequest

CheckpointData

GuardCtx

Guard context information — built by runtime, passed to guard.

PlanItem

A single step in a lightweight plan checklist.

ReasoningConfig

Reasoning/thinking configuration, unifying reasoning/thinking parameters across vendors.

SessionId

Unique identifier for an agent session.

ToolCallMessage

A tool call embedded in an assistant message.

ToolMetadata

Machine-readable metadata for a registered tool — origin, version, and runtime requirements in a stable shape consumers can inspect without parsing the LLM-facing definition JSON.

ToolResultData

UpdatePlanArgs

Arguments for the update_plan tool.

UsageInfo

Token usage information for an LLM call.

Enums

ApprovalDecision

ChatMessage

A chat message in a conversation.

CheckpointStep

Content

Structured content returned by a tool, aligned with the MCP content array shape (no envelope, no orchestration/failure/truncation semantics).

FinishReason

Semantic finish reason, replacing scattered Option<String> matching.

GuardDecision

Guard decision — returned by guard, executed by base loop.

ImageAttachment

Image attachment for multimodal messages.

ImageDetail

Image detail level.

MessageRole

PlanStepStatus

Lightweight plan step status — display-only, no execution semantics.

ReasoningEffort

Reasoning intensity/depth enumeration.

ResponseFormat

Response format configuration.

RiskLevel

RunOutcome

The outcome of an Agent turn or run.

StreamChunk

Streaming response chunk.

ToolExposure

Visibility level of a tool to the LLM model.