diff --git a/contracts/agents-api/index.md b/contracts/agents-api/index.md
index ea5548ca4..f551e352c 100644
--- a/contracts/agents-api/index.md
+++ b/contracts/agents-api/index.md
@@ -121,6 +121,7 @@ Each item is Core's deliberate or native behavior where the official service beh
 - The stream does not emit reasoning-summary events, Environment `pending` or `ready` events, or every pinned interim tool-output variant.
 - Native Item variants beyond those listed under [Turns and Items](./sessions-events.md#turns-and-items) are not projected, and Items cannot be modified.
 - A function result that cancellation prevents from being applied never appears as an Item.
+- Under the current [POSIX process scope](../../docs/process-protocol.md#scope-and-signals), an Environment stdio MCP descendant that calls `setsid` can continue producing side effects after the Turn is cancelled and the Session is idle. Cancellation of these detached descendants is not qualified.
 - Pinned Codex can lose command output emitted before its stream subscription.
 - Behind the [credential gateway](./model-execution.md#credential-gateway), pinned Codex compacts history locally and never calls `/responses/compact`.
 - Claude Code and MiniMax Code report no public usage.
diff --git a/contracts/agents-api/zh/index.md b/contracts/agents-api/zh/index.md
index 0531232af..75f3236b8 100644
--- a/contracts/agents-api/zh/index.md
+++ b/contracts/agents-api/zh/index.md
@@ -1,7 +1,7 @@
 ---
 title: "Agents API 覆盖台账"
 source: contracts/agents-api/index.md
-source_hash: 4bbbd2097e76481ec50fc7bc41de7855e88fb8346e65f389ec0230f5654f15ce
+source_hash: 543ea294db498840ad973baee0255cf993060dcb191457edc85dddc6dfdf7fe6
 ---
 
 Core 旨在以下方固定版本为准支持完整的 OpenAI Agents API（[public API rule](https://github.com/MiniMax-AI/OpenAgentCore/blob/main/AGENTS.md#public-api)）。本台账记录 Core 对各项资源实现了哪些内容、哪些契约保存其详细信息，并列出相对于 OpenAI 服务的所有已知差异和所有未解决缺口。[API namespaces and credentials](../../../docs/zh/api/index.md) 说明谁调用哪些 API；[Agents API guide](../../../docs/zh/api/public-agent-api.md) 介绍使用方法。
@@ -123,6 +123,7 @@ Core 自身字段位于 `x_agents_core` 中（[Core extensions](../../../docs/zh
 - 流不会发出 reasoning-summary 事件、Environment 的 `pending` 或 `ready` 事件，也不会覆盖固定版本中的所有临时 tool-output 变体。
 - 除 [Turns and Items](sessions-events.md#turns-and-items) 中列出的变体外，其他原生 Item 变体不会被投影，而且 Items 无法修改。
 - 如果取消导致函数结果无法应用，该结果将永远不会作为 Item 出现。
+- 在当前的 [POSIX 进程作用域](../../../docs/zh/process-protocol.md#scope-and-signals)下，调用 `setsid` 的 Environment stdio MCP 后代进程可能在 Turn 已取消且 Session 已空闲后继续产生副作用。这类脱离作用域的后代进程的取消尚未通过资格验证。
 - 固定版本的 Codex 可能会丢失在订阅其流之前发出的命令输出。
 - 在[凭据网关](./model-execution.md#credential-gateway)之后，固定版本的 Codex 在本地压缩历史，从不调用 `/responses/compact`。
 - Claude Code 和 MiniMax Code 都不报告公共用量。