ares-mcp 0.9.1

Model Context Protocol client and server for ARES
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// ares/src/mcp/mod.rs
// MCP module — exposes ARES as an MCP tool provider.
//
// Feature layout:
//   `mcp`                — protocol glue, client, auth, extension, registry, tools.
//                          Zero postgres dependency. Enables MCP *consumers*.
//   `mcp` + `postgres`   — adds the MCP *server* (server.rs) and usage tracking
//                          (usage.rs), which query tenant DB via sqlx::PgPool.
//
// This split exists so downstream library consumers can enable `mcp` for client
// and registry code without being forced to pull sqlx + postgres into their
// dependency graph.

#[cfg(feature = "mcp")]
pub mod extension;

#[cfg(all(feature = "mcp", feature = "postgres"))]
pub mod server;

#[cfg(feature = "mcp")]
pub mod tools;

// auth.rs uses ares_store::tenants::TenantDb (postgres-only), so the whole
// module is gated alongside the server. Its only consumer is mcp::server.
#[cfg(feature = "mcp")]
pub mod auth;

#[cfg(all(feature = "mcp", feature = "postgres"))]
pub mod usage;

#[cfg(feature = "mcp")]
pub mod client;

#[cfg(feature = "mcp")]
pub mod registry;

#[cfg(all(feature = "mcp", feature = "postgres"))]
pub use server::{start_mcp_server, AgentRunner};

#[cfg(feature = "mcp")]
pub use extension::{McpToolExtension, NoOpMcpExtension};

#[cfg(feature = "mcp")]
pub use registry::{
    builtin_ares_tools, extension_dispatch, get_tool, list_tools, register_tool, McpRegistry,
    RegistryError, ToolRegistered, ToolRegistry, ToolUnregistered,
};

/// Cordis Service for MCP availability — runtime check replaces `#[cfg(feature = "mcp")]` in handlers.
///
/// `check()` returns `cfg!(feature = "mcp")` so both builds compile; handlers branch via
/// `McpService::check()` or `ctx.get::<McpService>().check()`. Keep Cargo.toml `mcp` feature for dep selection only.
pub struct McpService;
impl cordis::Service for McpService {
    fn name(&self) -> &'static str {
        "mcp"
    }
    fn check(&self) -> bool {
        cfg!(feature = "mcp")
    }
}