## Get Agent

`beta.agents.retrieve(agent_id, **kwargs) -> BetaManagedAgentsAgent`

**get** `/v1/agents/{agent_id}`

Get Agent

### Parameters

- `agent_id: String`

- `version: Integer`

  Agent version. Omit for the most recent version. Must be at least 1 if specified.

- `betas: Array[AnthropicBeta]`

  Optional header to specify the beta version(s) you want to use.

  - `String = String`

  - `AnthropicBeta = :"message-batches-2024-09-24" | :"prompt-caching-2024-07-31" | :"computer-use-2024-10-22" | 23 more`

    - `:"message-batches-2024-09-24"`

    - `:"prompt-caching-2024-07-31"`

    - `:"computer-use-2024-10-22"`

    - `:"computer-use-2025-01-24"`

    - `:"pdfs-2024-09-25"`

    - `:"token-counting-2024-11-01"`

    - `:"token-efficient-tools-2025-02-19"`

    - `:"output-128k-2025-02-19"`

    - `:"files-api-2025-04-14"`

    - `:"mcp-client-2025-04-04"`

    - `:"mcp-client-2025-11-20"`

    - `:"dev-full-thinking-2025-05-14"`

    - `:"interleaved-thinking-2025-05-14"`

    - `:"code-execution-2025-05-22"`

    - `:"extended-cache-ttl-2025-04-11"`

    - `:"context-1m-2025-08-07"`

    - `:"context-management-2025-06-27"`

    - `:"model-context-window-exceeded-2025-08-26"`

    - `:"skills-2025-10-02"`

    - `:"fast-mode-2026-02-01"`

    - `:"output-300k-2026-03-24"`

    - `:"user-profiles-2026-03-24"`

    - `:"advisor-tool-2026-03-01"`

    - `:"managed-agents-2026-04-01"`

    - `:"cache-diagnosis-2026-04-07"`

    - `:"thinking-token-count-2026-05-13"`

### Returns

- `class BetaManagedAgentsAgent`

  A Managed Agents `agent`.

  - `id: String`

  - `archived_at: Time`

    A timestamp in RFC 3339 format

  - `created_at: Time`

    A timestamp in RFC 3339 format

  - `description: String`

  - `mcp_servers: Array[BetaManagedAgentsMCPServerURLDefinition]`

    - `name: String`

    - `type: :url`

      - `:url`

    - `url: String`

  - `metadata: Hash[Symbol, String]`

  - `model: BetaManagedAgentsModelConfig`

    Model identifier and configuration.

    - `id: BetaManagedAgentsModel`

      The model that will power your agent.

      See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.

      - `BetaManagedAgentsModel = :"claude-opus-4-8" | :"claude-opus-4-7" | :"claude-opus-4-6" | 7 more`

        The model that will power your agent.

        See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.

        - `:"claude-opus-4-8"`

          Frontier intelligence for long-running agents and coding

        - `:"claude-opus-4-7"`

          Frontier intelligence for long-running agents and coding

        - `:"claude-opus-4-6"`

          Most intelligent model for building agents and coding

        - `:"claude-sonnet-4-6"`

          Best combination of speed and intelligence

        - `:"claude-haiku-4-5"`

          Fastest model with near-frontier intelligence

        - `:"claude-haiku-4-5-20251001"`

          Fastest model with near-frontier intelligence

        - `:"claude-opus-4-5"`

          Premium model combining maximum intelligence with practical performance

        - `:"claude-opus-4-5-20251101"`

          Premium model combining maximum intelligence with practical performance

        - `:"claude-sonnet-4-5"`

          High-performance model for agents and coding

        - `:"claude-sonnet-4-5-20250929"`

          High-performance model for agents and coding

      - `String = String`

    - `speed: :standard | :fast`

      Inference speed mode. `fast` provides significantly faster output token generation at premium pricing. Not all models support `fast`; invalid combinations are rejected at create time.

      - `:standard`

      - `:fast`

  - `multiagent: BetaManagedAgentsMultiagent`

    Resolved coordinator topology with a concrete agent roster.

    - `agents: Array[BetaManagedAgentsAgentReference]`

      Agents the coordinator may spawn as session threads, each resolved to a specific version.

      - `id: String`

      - `type: :agent`

        - `:agent`

      - `version: Integer`

    - `type: :coordinator`

      - `:coordinator`

  - `name: String`

  - `skills: Array[BetaManagedAgentsAnthropicSkill | BetaManagedAgentsCustomSkill]`

    - `class BetaManagedAgentsAnthropicSkill`

      A resolved Anthropic-managed skill.

      - `skill_id: String`

      - `type: :anthropic`

        - `:anthropic`

      - `version: String`

    - `class BetaManagedAgentsCustomSkill`

      A resolved user-created custom skill.

      - `skill_id: String`

      - `type: :custom`

        - `:custom`

      - `version: String`

  - `system_: String`

  - `tools: Array[BetaManagedAgentsAgentToolset20260401 | BetaManagedAgentsMCPToolset | BetaManagedAgentsCustomTool]`

    - `class BetaManagedAgentsAgentToolset20260401`

      - `configs: Array[BetaManagedAgentsAgentToolConfig]`

        - `enabled: bool`

        - `name: :bash | :edit | :read | 5 more`

          Built-in agent tool identifier.

          - `:bash`

          - `:edit`

          - `:read`

          - `:write`

          - `:glob`

          - `:grep`

          - `:web_fetch`

          - `:web_search`

        - `permission_policy: BetaManagedAgentsAlwaysAllowPolicy | BetaManagedAgentsAlwaysAskPolicy`

          Permission policy for tool execution.

          - `class BetaManagedAgentsAlwaysAllowPolicy`

            Tool calls are automatically approved without user confirmation.

            - `type: :always_allow`

              - `:always_allow`

          - `class BetaManagedAgentsAlwaysAskPolicy`

            Tool calls require user confirmation before execution.

            - `type: :always_ask`

              - `:always_ask`

      - `default_config: BetaManagedAgentsAgentToolsetDefaultConfig`

        Resolved default configuration for agent tools.

        - `enabled: bool`

        - `permission_policy: BetaManagedAgentsAlwaysAllowPolicy | BetaManagedAgentsAlwaysAskPolicy`

          Permission policy for tool execution.

          - `class BetaManagedAgentsAlwaysAllowPolicy`

            Tool calls are automatically approved without user confirmation.

          - `class BetaManagedAgentsAlwaysAskPolicy`

            Tool calls require user confirmation before execution.

      - `type: :agent_toolset_20260401`

        - `:agent_toolset_20260401`

    - `class BetaManagedAgentsMCPToolset`

      - `configs: Array[BetaManagedAgentsMCPToolConfig]`

        - `enabled: bool`

        - `name: String`

        - `permission_policy: BetaManagedAgentsAlwaysAllowPolicy | BetaManagedAgentsAlwaysAskPolicy`

          Permission policy for tool execution.

          - `class BetaManagedAgentsAlwaysAllowPolicy`

            Tool calls are automatically approved without user confirmation.

          - `class BetaManagedAgentsAlwaysAskPolicy`

            Tool calls require user confirmation before execution.

      - `default_config: BetaManagedAgentsMCPToolsetDefaultConfig`

        Resolved default configuration for all tools from an MCP server.

        - `enabled: bool`

        - `permission_policy: BetaManagedAgentsAlwaysAllowPolicy | BetaManagedAgentsAlwaysAskPolicy`

          Permission policy for tool execution.

          - `class BetaManagedAgentsAlwaysAllowPolicy`

            Tool calls are automatically approved without user confirmation.

          - `class BetaManagedAgentsAlwaysAskPolicy`

            Tool calls require user confirmation before execution.

      - `mcp_server_name: String`

      - `type: :mcp_toolset`

        - `:mcp_toolset`

    - `class BetaManagedAgentsCustomTool`

      A custom tool as returned in API responses.

      - `description: String`

      - `input_schema: BetaManagedAgentsCustomToolInputSchema`

        JSON Schema for custom tool input parameters.

        - `properties: Hash[Symbol, untyped]`

          JSON Schema properties defining the tool's input parameters.

        - `required: Array[String]`

          List of required property names.

        - `type: :object`

          Must be 'object' for tool input schemas.

          - `:object`

      - `name: String`

      - `type: :custom`

        - `:custom`

  - `type: :agent`

    - `:agent`

  - `updated_at: Time`

    A timestamp in RFC 3339 format

  - `version: Integer`

    The agent's current version. Starts at 1 and increments when the agent is modified.

### Example

```ruby
require "anthropic"

anthropic = Anthropic::Client.new(api_key: "my-anthropic-api-key")

beta_managed_agents_agent = anthropic.beta.agents.retrieve("agent_011CZkYpogX7uDKUyvBTophP")

puts(beta_managed_agents_agent)
```

#### Response

```json
{
  "id": "agent_011CZkYpogX7uDKUyvBTophP",
  "archived_at": null,
  "created_at": "2026-03-15T10:00:00Z",
  "description": "A general-purpose starter agent.",
  "mcp_servers": [
    {
      "name": "example-mcp",
      "type": "url",
      "url": "https://example-server.modelcontextprotocol.io/sse"
    }
  ],
  "metadata": {
    "foo": "bar"
  },
  "model": {
    "id": "claude-sonnet-4-6",
    "speed": "standard"
  },
  "multiagent": {
    "agents": [
      {
        "id": "agent_011CZkYqphY8vELVzwCUpqiQ",
        "type": "agent",
        "version": 1
      }
    ],
    "type": "coordinator"
  },
  "name": "My First Agent",
  "skills": [
    {
      "skill_id": "xlsx",
      "type": "anthropic",
      "version": "1"
    },
    {
      "skill_id": "skill_011CZkZFNu9hAbo3jZPRgTlx",
      "type": "custom",
      "version": "2"
    }
  ],
  "system": "You are a general-purpose agent that can research, write code, run commands, and use connected tools to complete the user's task end to end.",
  "tools": [
    {
      "configs": [
        {
          "enabled": true,
          "name": "bash",
          "permission_policy": {
            "type": "always_allow"
          }
        }
      ],
      "default_config": {
        "enabled": true,
        "permission_policy": {
          "type": "always_ask"
        }
      },
      "type": "agent_toolset_20260401"
    }
  ],
  "type": "agent",
  "updated_at": "2026-03-15T10:00:00Z",
  "version": 1
}
```