ACP v2 TypeScript SDK — EXPERIMENTAL DRAFT - v1.3.0
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    Type Alias McpCapabilitiesExperimental

    MCP capabilities supported by the agent for session lifecycle requests.

    type McpCapabilities = {
        stdio?: McpStdioCapabilities | null;
        http?: McpHttpCapabilities | null;
        acp?: McpAcpCapabilities | null;
        _meta?: { [key: string]: unknown } | null;
    }
    Index
    stdio?: McpStdioCapabilities | null

    Agent supports [McpServer::Stdio].

    Optional. Omitted or null both mean the agent does not advertise support. Supplying {} means the agent supports stdio MCP server transports.

    http?: McpHttpCapabilities | null

    Agent supports [McpServer::Http].

    Optional. Omitted or null both mean the agent does not advertise support. Supplying {} means the agent supports HTTP MCP server transports.

    acp?: McpAcpCapabilities | null

    UNSTABLE

    This capability is not part of the spec yet, and may be removed or changed at any point.

    Agent supports [McpServer::Acp].

    Optional. Omitted or null both mean the agent does not advertise support. Supplying {} means the agent supports ACP MCP server transports.

    _meta?: { [key: string]: unknown } | null

    The _meta property is reserved by ACP to allow clients and agents to attach additional metadata to their interactions. Implementations MUST NOT make assumptions about values at these keys.

    See protocol docs: Extensibility