systemprompt-agent 0.63.0

Agent-to-Agent (A2A) protocol for systemprompt.io AI governance: streaming, JSON-RPC models, task lifecycle, .well-known discovery, and governed agent orchestration.
Documentation 
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//! # systemprompt-agent
//!
//! Agent-to-Agent (A2A) protocol implementation for systemprompt.io.
//!
//! This crate hosts the domain logic for hosting governed AI agents:
//! - JSON-RPC protocol models in [`models::a2a`]
//! - Persistence in [`repository`] (tasks, contexts, artifacts, execution
//!   steps)
//! - Runtime services in [`services`] (HTTP server, orchestration, MCP
//!   bridging, skills ingestion, streaming, registry)
//! - A typed error hierarchy rooted at [`AgentError`]
//!
//! ## Feature flags
//!
//! This crate currently has no Cargo features beyond defaults. Functionality
//! is unconditional and the crate compiles a single configuration. The facade
//! crate `systemprompt` gates inclusion via the `agent`/`full` features.
//!
//! ## Layer
//!
//! Domain layer. Depends only on `shared/*` and `infra/*` crates; the
//! cross-domain seams it needs (managed skills, the MCP tool-execution ledger,
//! webhook delivery) arrive as shared-layer traits injected at the
//! composition root.
//!
//! Copyright (c) systemprompt.io — Business Source License 1.1.
//! See <https://systemprompt.io> for licensing details.

pub(crate) mod error;
pub(crate) mod extension;
pub mod models;
pub mod repository;
pub mod services;
pub(crate) mod state;

pub use extension::AgentExtension;

pub use state::AgentState;

pub use models::a2a::{
    A2aJsonRpcRequest, A2aRequestParams, A2aResponse, AgentCapabilities, AgentCard, AgentInterface,
    AgentProvider, AgentSkill, Artifact, DataPart, Message, MessageSendParams, Part,
    ProtocolBinding, SecurityScheme, Task, TaskIdParams, TaskQueryParams, TaskState, TaskStatus,
    TextPart,
};

pub use error::{AgentError, AgentResult, ArtifactError, ExecutionStepTarget};

pub const A2A_PROTOCOL_VERSION: &str = "0.3.0";

pub use services::{
    AgentHandlerState, AgentOrchestrator, AgentServer, AgentStatus, ContextService, SkillService,
};

pub use repository::content::ArtifactRepository;