Claude Platform Docs

イベントを送信

BetaManagedAgentsSendSessionEvents beta().sessions().events().send(params, requestOptions = RequestOptions.none())
POST/v1/sessions/{session_id}/events

イベントを送信

Parameters
EventSendParams params
Optional<String> sessionId⁠Path parameter
Optional<List<AnthropicBeta>> betas⁠Header parameter

This endpoint is in beta: requests must send managed-agents-2026-04-01 in this header.

MESSAGE_BATCHES_2024_09_24("message-batches-2024-09-24")
PROMPT_CACHING_2024_07_31("prompt-caching-2024-07-31")
COMPUTER_USE_2024_10_22("computer-use-2024-10-22")
COMPUTER_USE_2025_01_24("computer-use-2025-01-24")
PDFS_2024_09_25("pdfs-2024-09-25")
TOKEN_COUNTING_2024_11_01("token-counting-2024-11-01")
TOKEN_EFFICIENT_TOOLS_2025_02_19("token-efficient-tools-2025-02-19")
OUTPUT_128K_2025_02_19("output-128k-2025-02-19")
FILES_API_2025_04_14("files-api-2025-04-14")
MCP_CLIENT_2025_04_04("mcp-client-2025-04-04")
MCP_CLIENT_2025_11_20("mcp-client-2025-11-20")
DEV_FULL_THINKING_2025_05_14("dev-full-thinking-2025-05-14")
INTERLEAVED_THINKING_2025_05_14("interleaved-thinking-2025-05-14")
CODE_EXECUTION_2025_05_22("code-execution-2025-05-22")
EXTENDED_CACHE_TTL_2025_04_11("extended-cache-ttl-2025-04-11")
CONTEXT_1M_2025_08_07("context-1m-2025-08-07")
CONTEXT_MANAGEMENT_2025_06_27("context-management-2025-06-27")
MODEL_CONTEXT_WINDOW_EXCEEDED_2025_08_26("model-context-window-exceeded-2025-08-26")
SKILLS_2025_10_02("skills-2025-10-02")
FAST_MODE_2026_02_01("fast-mode-2026-02-01")
OUTPUT_300K_2026_03_24("output-300k-2026-03-24")
USER_PROFILES_2026_03_24("user-profiles-2026-03-24")
USER_PROFILES_2026_08_18("user-profiles-2026-08-18")
USER_PROFILES_2026_09_04("user-profiles-2026-09-04")
ADVISOR_TOOL_2026_03_01("advisor-tool-2026-03-01")
MANAGED_AGENTS_2026_04_01("managed-agents-2026-04-01")
CACHE_DIAGNOSIS_2026_04_07("cache-diagnosis-2026-04-07")
DREAMING_2026_04_21("dreaming-2026-04-21")
THINKING_TOKEN_COUNT_2026_05_13("thinking-token-count-2026-05-13")
SERVER_SIDE_FALLBACK_2026_06_01("server-side-fallback-2026-06-01")
SERVER_SIDE_FALLBACK_2026_07_01("server-side-fallback-2026-07-01")
FALLBACK_CREDIT_2026_06_01("fallback-credit-2026-06-01")
FALLBACK_CREDIT_2026_07_01("fallback-credit-2026-07-01")
AGENT_MEMORY_2026_07_22("agent-memory-2026-07-22")
MID_CONVERSATION_TOOL_CHANGES_2026_07_01("mid-conversation-tool-changes-2026-07-01")
COMPACT_2026_01_12("compact-2026-01-12")
COMPUTER_USE_2025_11_24("computer-use-2025-11-24")
MCP_TUNNELS_2026_06_22("mcp-tunnels-2026-06-22")
STRUCTURED_OUTPUTS_2025_11_13("structured-outputs-2025-11-13")
TASK_BUDGETS_2026_03_13("task-budgets-2026-03-13")
THINKING_DISPLAY_UPDATES_2026_08_18("thinking-display-updates-2026-08-18")
CE_USER_MANAGEMENT_2026_07_13("ce-user-management-2026-07-13")
MID_CONVERSATION_OUTPUT_CONFIG_2026_07_01("mid-conversation-output-config-2026-07-01")
THINKING_BINDING_CONTROLS_2026_08_01("thinking-binding-controls-2026-08-01")
MID_CONVERSATION_SYSTEM_CLEAR_AT_2026_08_21("mid-conversation-system-clear-at-2026-08-21")
COMPACT_2026_09_04("compact-2026-09-04")
INLINE_TOOLS_2026_09_15("inline-tools-2026-09-15")
MCP_CLIENT_2026_09_15("mcp-client-2026-09-15")
CE_PLUGINS_2026_09_01("ce-plugins-2026-09-01")
SPEND_LIMIT_READS_2026_09_26("spend-limit-reads-2026-09-26")
TELEMETRY_DESTINATIONS_2026_08_11("telemetry-destinations-2026-08-11")
Optional<String> workspaceId⁠Header parameter

Optional header to select the Workspace for this request. The value is a Workspace ID (for example, wrkspc_011CZkZaBF1tNoB5wlCeusgy).

Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

List<BetaManagedAgentsEventParams> events

Events to send to the session.

class BetaManagedAgentsUserMessageEventParams { type; content; }

Parameters for sending a user message to the session.

Type type
List<Content> content

Array of content blocks for the user message.

One of the following:
class BetaManagedAgentsTextBlock { type; text; }

Regular text content.

Type type
String text

The text content.

minLength1
class BetaManagedAgentsImageBlock { type; source; }

Image content specified directly as base64 data or as a reference via a URL.

class BetaManagedAgentsDocumentBlock { type; source; context; title; }

Document content, either specified directly as base64 data, as text, or as a reference via a URL.

class BetaManagedAgentsRedactedBlock { type; }

Placeholder for content withheld by Anthropic model policy.

Type type
class BetaManagedAgentsUserInterruptEventParams { type; sessionThreadId; }

Parameters for sending an interrupt to pause the agent.

Type type
Optional<String> sessionThreadId

If absent, interrupts every non-archived thread in a multiagent session (or the primary alone in a single-agent session). If present, interrupts only the named thread.

class BetaManagedAgentsUserToolConfirmationEventParams { type; result; toolUseId; denyMessage; }

Parameters for confirming or denying a tool execution request.

Type type
Result result

The confirmation result: 'allow' or 'deny'.

One of the following:
ALLOW("allow")
DENY("deny")
String toolUseId

The id of the agent.tool_use or agent.mcp_tool_use event this result corresponds to, which can be found in the last session.status_idle event's stop_reason.event_ids field.

minLength1
maxLength128
Optional<String> denyMessage

Optional message providing context for a 'deny' decision. Only allowed when result is 'deny'.

maxLength10000
class BetaManagedAgentsUserCustomToolResultEventParams { type; customToolUseId; content; isError; }

Parameters for providing the result of a custom tool execution.

class BetaManagedAgentsUserDefineOutcomeEventParams { type; description; rubric; maxIterations; }

Parameters for defining an outcome the agent should work toward. The agent begins work on receipt.

Type type
String description

What the agent should produce. This is the task specification.

Rubric rubric

How to grade the outcome. Text or file reference.

One of the following:
class BetaManagedAgentsFileRubricParams { type; fileId; }

Rubric referenced by a file uploaded via the Files API.

Type type
String fileId

ID of the rubric file.

class BetaManagedAgentsTextRubricParams { type; content; }

Rubric content provided inline as text.

Type type
String content

Rubric content. Plain text or markdown — the grader treats it as freeform text. Maximum 262144 characters.

maxLength262144
Optional<Long> maxIterations

Eval→revision cycles before giving up. Default 3, max 20.

formatint32
class BetaManagedAgentsUserToolResultEventParams { type; toolUseId; content; isError; }

Parameters for providing the result of an agent-toolset tool execution. Only valid on self_hosted environments, where sandbox-routed tools are executed by the client rather than the server.

class BetaManagedAgentsSystemMessageEventParams { type; content; }

Privileged context for the accompanying turn and all subsequent turns, appended to the session's system context as a role: "system" turn rather than replacing the top-level system prompt. At most one per request: it must be the final event and immediately follow the user.message, user.tool_result, or user.custom_tool_result it accompanies. Only supported on models that accept mid-conversation system messages.

Type type
List<BetaManagedAgentsSystemContentBlock> content

System content blocks to append. Text-only.

Type type
String text

The text content.

minLength1
Returns
class BetaManagedAgentsSendSessionEvents { data; }

Events that were successfully sent to the session.

イベントを送信
package com.anthropic.example;

import com.anthropic.client.AnthropicClient;
import com.anthropic.client.okhttp.AnthropicOkHttpClient;
import com.anthropic.models.beta.sessions.events.BetaManagedAgentsSendSessionEvents;
import com.anthropic.models.beta.sessions.events.BetaManagedAgentsTextBlock;
import com.anthropic.models.beta.sessions.events.BetaManagedAgentsUserMessageEventParams;
import com.anthropic.models.beta.sessions.events.EventSendParams;
import java.util.List;

public final class Main {
    private Main() {}

    public static void main(String[] args) {
        AnthropicClient client = AnthropicOkHttpClient.fromEnv();

        EventSendParams params = EventSendParams.builder()
            .sessionId("sesn_011CZkZAtmR3yMPDzynEDxu7")
            .addUserMessageEvent(List.of(BetaManagedAgentsUserMessageEventParams.Content.ofText(BetaManagedAgentsTextBlock.builder()
                .text("Where is my order #1234?")
                .type(BetaManagedAgentsTextBlock.Type.TEXT)
                .build())))
            .build();
        BetaManagedAgentsSendSessionEvents betaManagedAgentsSendSessionEvents = client.beta().sessions().events().send(params);
    }
}
Returns Examples
Response 200
{
  "data": [
    {
      "id": "sevt_011CZkZGPp1iBcp4kaQSihUm",
      "content": [
        {
          "text": "Where is my order #1234?",
          "type": "text"
        }
      ],
      "type": "user.message",
      "processed_at": "2026-03-15T10:00:00Z"
    }
  ]
}