Enum ExtensionConfig 

pub enum ExtensionConfig {
    Sse {
        name: String,
        description: String,
        uri: Option<String>,
    },
    Stdio {
        name: String,
        description: String,
        cmd: String,
        args: Vec<String>,
        envs: Envs,
        env_keys: Vec<String>,
        timeout: Option<u64>,
        bundled: Option<bool>,
        available_tools: Vec<String>,
    },
    Builtin {
        name: String,
        description: String,
        display_name: Option<String>,
        timeout: Option<u64>,
        bundled: Option<bool>,
        available_tools: Vec<String>,
    },
    Platform {
        name: String,
        description: String,
        bundled: Option<bool>,
        available_tools: Vec<String>,
    },
    StreamableHttp {
        name: String,
        description: String,
        uri: String,
        envs: Envs,
        env_keys: Vec<String>,
        headers: HashMap<String, String>,
        timeout: Option<u64>,
        bundled: Option<bool>,
        available_tools: Vec<String>,
    },
    Frontend {
        name: String,
        description: String,
        tools: Vec<Tool>,
        instructions: Option<String>,
        bundled: Option<bool>,
        available_tools: Vec<String>,
    },
    InlinePython {
        name: String,
        description: String,
        code: String,
        timeout: Option<u64>,
        dependencies: Option<Vec<String>>,
        available_tools: Vec<String>,
    },
}

Represents the different types of MCP extensions that can be added to the manager

Variants

Sse

SSE transport is no longer supported - kept only for config file compatibility

Fields

name: String

description: String

uri: Option<String>

Stdio

Standard I/O client with command and arguments

Fields

name: String

The name used to identify this extension

description: String

cmd: String

args: Vec<String>

envs: Envs

env_keys: Vec<String>

timeout: Option<u64>

bundled: Option<bool>

available_tools: Vec<String>

Builtin

Built-in extension that is part of the bundled aster MCP server

Fields

name: String

The name used to identify this extension

description: String

display_name: Option<String>

timeout: Option<u64>

bundled: Option<bool>

available_tools: Vec<String>

Platform

Platform extensions that have direct access to the agent etc and run in the agent process

Fields

name: String

The name used to identify this extension

description: String

bundled: Option<bool>

available_tools: Vec<String>

StreamableHttp

Streamable HTTP client with a URI endpoint using MCP Streamable HTTP specification

Fields

name: String

The name used to identify this extension

description: String

uri: String

envs: Envs

env_keys: Vec<String>

headers: HashMap<String, String>

timeout: Option<u64>

bundled: Option<bool>

available_tools: Vec<String>

Frontend

Frontend-provided tools that will be called through the frontend

Fields

name: String

The name used to identify this extension

description: String

tools: Vec<Tool>

The tools provided by the frontend

instructions: Option<String>

Instructions for how to use these tools

bundled: Option<bool>

available_tools: Vec<String>

InlinePython

Inline Python code that will be executed using uvx

Fields

name: String

The name used to identify this extension

description: String

code: String

The Python code to execute

timeout: Option<u64>

Timeout in seconds

dependencies: Option<Vec<String>>

Python package dependencies required by this extension

available_tools: Vec<String>

Implementations

impl ExtensionConfig

pub fn streamable_http<S: Into<String>, T: Into<u64>>( name: S, uri: S, description: S, timeout: T, ) -> Self

pub fn stdio<S: Into<String>, T: Into<u64>>( name: S, cmd: S, description: S, timeout: T, ) -> Self

pub fn inline_python<S: Into<String>, T: Into<u64>>( name: S, code: S, description: S, timeout: T, ) -> Self

pub fn with_args<I, S>(self, args: I) -> Self

where I: IntoIterator<Item = S>, S: Into<String>,

pub fn key(&self) -> String

pub fn name(&self) -> String

Get the extension name regardless of variant

pub fn is_tool_available(&self, tool_name: &str) -> bool

Check if a tool should be available to the LLM

Trait Implementations

impl Clone for ExtensionConfig

fn clone(&self) -> ExtensionConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ExtensionConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ExtensionConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ExtensionConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ExtensionConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for ExtensionConfig

fn eq(&self, other: &ExtensionConfig) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ExtensionConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<'__s> ToSchema<'__s> for ExtensionConfig

fn schema() -> (&'__s str, RefOr<Schema>)

Return a tuple of name and schema or reference to a schema that can be referenced by the name or inlined directly to responses, request bodies or parameters.

fn aliases() -> Vec<(&'__s str, Schema)>

Optional set of alias schemas for the ToSchema::schema.

impl StructuralPartialEq for ExtensionConfig