## Get Agent

`BetaManagedAgentsAgent Beta.Agents.Retrieve(AgentRetrieveParamsparameters, CancellationTokencancellationToken = default)`

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

Get Agent

### Parameters

- `AgentRetrieveParams parameters`

  - `required string agentID`

    Path param: Path parameter agent_id

  - `Int version`

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

  - `IReadOnlyList<AnthropicBeta> betas`

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

    - `"message-batches-2024-09-24"MessageBatches2024_09_24`

    - `"prompt-caching-2024-07-31"PromptCaching2024_07_31`

    - `"computer-use-2024-10-22"ComputerUse2024_10_22`

    - `"computer-use-2025-01-24"ComputerUse2025_01_24`

    - `"pdfs-2024-09-25"Pdfs2024_09_25`

    - `"token-counting-2024-11-01"TokenCounting2024_11_01`

    - `"token-efficient-tools-2025-02-19"TokenEfficientTools2025_02_19`

    - `"output-128k-2025-02-19"Output128k2025_02_19`

    - `"files-api-2025-04-14"FilesApi2025_04_14`

    - `"mcp-client-2025-04-04"McpClient2025_04_04`

    - `"mcp-client-2025-11-20"McpClient2025_11_20`

    - `"dev-full-thinking-2025-05-14"DevFullThinking2025_05_14`

    - `"interleaved-thinking-2025-05-14"InterleavedThinking2025_05_14`

    - `"code-execution-2025-05-22"CodeExecution2025_05_22`

    - `"extended-cache-ttl-2025-04-11"ExtendedCacheTtl2025_04_11`

    - `"context-1m-2025-08-07"Context1m2025_08_07`

    - `"context-management-2025-06-27"ContextManagement2025_06_27`

    - `"model-context-window-exceeded-2025-08-26"ModelContextWindowExceeded2025_08_26`

    - `"skills-2025-10-02"Skills2025_10_02`

    - `"fast-mode-2026-02-01"FastMode2026_02_01`

    - `"output-300k-2026-03-24"Output300k2026_03_24`

    - `"user-profiles-2026-03-24"UserProfiles2026_03_24`

    - `"advisor-tool-2026-03-01"AdvisorTool2026_03_01`

    - `"managed-agents-2026-04-01"ManagedAgents2026_04_01`

    - `"cache-diagnosis-2026-04-07"CacheDiagnosis2026_04_07`

    - `"thinking-token-count-2026-05-13"ThinkingTokenCount2026_05_13`

### Returns

- `class BetaManagedAgentsAgent:`

  A Managed Agents `agent`.

  - `required string ID`

  - `required DateTimeOffset? ArchivedAt`

    A timestamp in RFC 3339 format

  - `required DateTimeOffset CreatedAt`

    A timestamp in RFC 3339 format

  - `required string? Description`

  - `required IReadOnlyList<BetaManagedAgentsMcpServerUrlDefinition> McpServers`

    - `required string Name`

    - `required Type Type`

      - `"url"Url`

    - `required string Url`

  - `required IReadOnlyDictionary<string, string> Metadata`

  - `required BetaManagedAgentsModelConfig Model`

    Model identifier and configuration.

    - `required BetaManagedAgentsModel ID`

      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"ClaudeOpus4_8`

        Frontier intelligence for long-running agents and coding

      - `"claude-opus-4-7"ClaudeOpus4_7`

        Frontier intelligence for long-running agents and coding

      - `"claude-opus-4-6"ClaudeOpus4_6`

        Most intelligent model for building agents and coding

      - `"claude-sonnet-4-6"ClaudeSonnet4_6`

        Best combination of speed and intelligence

      - `"claude-haiku-4-5"ClaudeHaiku4_5`

        Fastest model with near-frontier intelligence

      - `"claude-haiku-4-5-20251001"ClaudeHaiku4_5_20251001`

        Fastest model with near-frontier intelligence

      - `"claude-opus-4-5"ClaudeOpus4_5`

        Premium model combining maximum intelligence with practical performance

      - `"claude-opus-4-5-20251101"ClaudeOpus4_5_20251101`

        Premium model combining maximum intelligence with practical performance

      - `"claude-sonnet-4-5"ClaudeSonnet4_5`

        High-performance model for agents and coding

      - `"claude-sonnet-4-5-20250929"ClaudeSonnet4_5_20250929`

        High-performance model for agents and coding

    - `Speed Speed`

      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"Standard`

      - `"fast"Fast`

  - `required BetaManagedAgentsMultiagent? Multiagent`

    Resolved coordinator topology with a concrete agent roster.

    - `required IReadOnlyList<BetaManagedAgentsAgentReference> Agents`

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

      - `required string ID`

      - `required Type Type`

        - `"agent"Agent`

      - `required Int Version`

    - `required Type Type`

      - `"coordinator"Coordinator`

  - `required string Name`

  - `required IReadOnlyList<Skill> Skills`

    - `class BetaManagedAgentsAnthropicSkill:`

      A resolved Anthropic-managed skill.

      - `required string SkillID`

      - `required Type Type`

        - `"anthropic"Anthropic`

      - `required string Version`

    - `class BetaManagedAgentsCustomSkill:`

      A resolved user-created custom skill.

      - `required string SkillID`

      - `required Type Type`

        - `"custom"Custom`

      - `required string Version`

  - `required string? System`

  - `required IReadOnlyList<Tool> Tools`

    - `class BetaManagedAgentsAgentToolset20260401:`

      - `required IReadOnlyList<BetaManagedAgentsAgentToolConfig> Configs`

        - `required Boolean Enabled`

        - `required Name Name`

          Built-in agent tool identifier.

          - `"bash"Bash`

          - `"edit"Edit`

          - `"read"Read`

          - `"write"Write`

          - `"glob"Glob`

          - `"grep"Grep`

          - `"web_fetch"WebFetch`

          - `"web_search"WebSearch`

        - `required PermissionPolicy PermissionPolicy`

          Permission policy for tool execution.

          - `class BetaManagedAgentsAlwaysAllowPolicy:`

            Tool calls are automatically approved without user confirmation.

            - `required Type Type`

              - `"always_allow"AlwaysAllow`

          - `class BetaManagedAgentsAlwaysAskPolicy:`

            Tool calls require user confirmation before execution.

            - `required Type Type`

              - `"always_ask"AlwaysAsk`

      - `required BetaManagedAgentsAgentToolsetDefaultConfig DefaultConfig`

        Resolved default configuration for agent tools.

        - `required Boolean Enabled`

        - `required PermissionPolicy PermissionPolicy`

          Permission policy for tool execution.

          - `class BetaManagedAgentsAlwaysAllowPolicy:`

            Tool calls are automatically approved without user confirmation.

          - `class BetaManagedAgentsAlwaysAskPolicy:`

            Tool calls require user confirmation before execution.

      - `required Type Type`

        - `"agent_toolset_20260401"AgentToolset20260401`

    - `class BetaManagedAgentsMcpToolset:`

      - `required IReadOnlyList<BetaManagedAgentsMcpToolConfig> Configs`

        - `required Boolean Enabled`

        - `required string Name`

        - `required PermissionPolicy PermissionPolicy`

          Permission policy for tool execution.

          - `class BetaManagedAgentsAlwaysAllowPolicy:`

            Tool calls are automatically approved without user confirmation.

          - `class BetaManagedAgentsAlwaysAskPolicy:`

            Tool calls require user confirmation before execution.

      - `required BetaManagedAgentsMcpToolsetDefaultConfig DefaultConfig`

        Resolved default configuration for all tools from an MCP server.

        - `required Boolean Enabled`

        - `required PermissionPolicy PermissionPolicy`

          Permission policy for tool execution.

          - `class BetaManagedAgentsAlwaysAllowPolicy:`

            Tool calls are automatically approved without user confirmation.

          - `class BetaManagedAgentsAlwaysAskPolicy:`

            Tool calls require user confirmation before execution.

      - `required string McpServerName`

      - `required Type Type`

        - `"mcp_toolset"McpToolset`

    - `class BetaManagedAgentsCustomTool:`

      A custom tool as returned in API responses.

      - `required string Description`

      - `required BetaManagedAgentsCustomToolInputSchema InputSchema`

        JSON Schema for custom tool input parameters.

        - `IReadOnlyDictionary<string, JsonElement>? Properties`

          JSON Schema properties defining the tool's input parameters.

        - `IReadOnlyList<string> Required`

          List of required property names.

        - `Type Type`

          Must be 'object' for tool input schemas.

          - `"object"Object`

      - `required string Name`

      - `required Type Type`

        - `"custom"Custom`

  - `required Type Type`

    - `"agent"Agent`

  - `required DateTimeOffset UpdatedAt`

    A timestamp in RFC 3339 format

  - `required Int Version`

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

### Example

```csharp
AgentRetrieveParams parameters = new()
{
    AgentID = "agent_011CZkYpogX7uDKUyvBTophP"
};

var betaManagedAgentsAgent = await client.Beta.Agents.Retrieve(parameters);

Console.WriteLine(betaManagedAgentsAgent);
```

#### 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
}
```