diff --git a/.changeset/acp-api-key-auth.md b/.changeset/acp-api-key-auth.md
new file mode 100644
index 0000000000..23411b95f2
--- /dev/null
+++ b/.changeset/acp-api-key-auth.md
@@ -0,0 +1,5 @@
+---
+"@moonshot-ai/kimi-code": patch
+---
+
+Allow ACP sessions to use configured API-key providers.
diff --git a/docs/en/guides/ides.md b/docs/en/guides/ides.md
index f275af8ac6..e63dd822f5 100644
--- a/docs/en/guides/ides.md
+++ b/docs/en/guides/ides.md
@@ -4,9 +4,9 @@ Kimi Code CLI supports integration into IDEs via the [Agent Client Protocol (ACP
 
 ## Prerequisites
 
-Before configuring your IDE, make sure Kimi Code CLI is installed and you have completed the login setup.
+Before configuring your IDE, make sure Kimi Code CLI is installed and has usable authentication: complete the OAuth login flow or configure a provider with an API key.
 
-The ACP adapter is exposed as the `kimi acp` subcommand. The IDE launches it as a child process and communicates over stdin/stdout using JSON-RPC. Each time the IDE creates a session, the CLI reuses its existing authentication state — no need to log in again.
+The ACP adapter is exposed as the `kimi acp` subcommand. The IDE launches it as a child process and communicates over stdin/stdout using JSON-RPC. Each time the IDE creates a session, the CLI reuses its existing OAuth login or configured API key — no need to authenticate again.
 
 ::: tip Path note
 Child processes launched from an IDE GUI on macOS typically do **not** inherit the terminal shell's `PATH`. If `kimi` is not in a system directory like `/usr/local/bin`, use the absolute path in your IDE configuration. Run `which kimi` in a terminal to find the active path.
@@ -82,12 +82,12 @@ Pick **Kimi Code CLI** from Paseo's built-in ACP provider catalog, or add a cust
 }
 ```
 
-Paseo's generic ACP adapter does not drive the login flow, so complete the terminal login first (see [Prerequisites](#prerequisites)) — otherwise session creation fails with `Authentication required`.
+Paseo's generic ACP adapter does not drive the login flow. Complete the terminal OAuth login or configure a provider with an API key first (see [Prerequisites](#prerequisites)) — otherwise session creation fails with `Authentication required`.
 
 ## Troubleshooting
 
-- **Session disconnects immediately / IDE shows "agent exited"**: usually a wrong `command` path or a missing login. Run `kimi acp` in a terminal first to verify — if it blocks waiting for stdin, the CLI itself is fine and the problem is in the IDE configuration; if it exits immediately with an error, follow the error message (most commonly you need to run `/login`).
-- **IDE shows "auth required"**: the CLI has no usable authentication token. Exit the IDE, run `kimi` in a terminal to complete login, then restart the IDE.
+- **Session disconnects immediately / IDE shows "agent exited"**: usually a wrong `command` path or missing authentication. Run `kimi acp` in a terminal first to verify — if it blocks waiting for stdin, the CLI itself is fine and the problem is in the IDE configuration; if it exits immediately with an error, follow the error message (most commonly you need to run `/login` or configure a provider with an API key).
+- **IDE shows "auth required"**: the CLI has no usable OAuth login or configured API key. Exit the IDE, complete login or configure a provider in a terminal, then restart the IDE.
 - **MCP tools not visible**: check the [`kimi acp` reference](../reference/kimi-acp.md) capability table to confirm that the MCP transport type configured in your IDE is supported. The Kimi Code CLI ACP adapter currently supports `http`, `stdio`, and `sse` transports; `acp` transport MCP servers are silently dropped and a warning is written to the log.
 
 ## Next steps
diff --git a/docs/zh/guides/ides.md b/docs/zh/guides/ides.md
index a8193ed4ea..3602b1fca0 100644
--- a/docs/zh/guides/ides.md
+++ b/docs/zh/guides/ides.md
@@ -4,9 +4,9 @@ Kimi Code CLI 支持通过 [Agent Client Protocol (ACP)](https://agentclientprot
 
 ## 前置准备
 
-在配置 IDE 之前，请确保已安装 Kimi Code CLI 并完成登录配置。
+在配置 IDE 之前，请确保已安装 Kimi Code CLI，并完成 OAuth 登录或配置带有 API 密钥的 provider。
 
-ACP 适配层暴露子命令 `kimi acp`，IDE 通过子进程方式启动它，并在标准输入/输出上跑 JSON-RPC。每次 IDE 创建会话时，CLI 会复用它的鉴权状态——不需要重复登录。
+ACP 适配层暴露子命令 `kimi acp`，IDE 通过子进程方式启动它，并在标准输入/输出上跑 JSON-RPC。每次 IDE 创建会话时，CLI 会复用已有的 OAuth 登录或已配置的 API 密钥——不需要重复鉴权。
 
 ::: tip 路径提示
 macOS 下从 IDE GUI 启动的子进程通常**不会**继承终端 shell 的 `PATH`，所以如果 `kimi` 不在 `/usr/local/bin` 这类系统目录里，IDE 配置中要使用绝对路径。终端里运行 `which kimi` 可以查到当前生效的路径。
@@ -82,12 +82,12 @@ JetBrains 这一侧对 `command` 字段处理较严格——务必填写**绝对
 }
 ```
 
-Paseo 的通用 ACP 适配层不会帮你走登录流程，所以请先完成终端登录（见[前置准备](#前置准备)）——否则创建会话会以 `Authentication required` 失败。
+Paseo 的通用 ACP 适配层不会帮你走登录流程，所以请先完成终端 OAuth 登录或配置带有 API 密钥的 provider（见[前置准备](#前置准备)）——否则创建会话会以 `Authentication required` 失败。
 
 ## 故障排查
 
-- **会话立刻被中断 / IDE 提示 "agent exited"**：通常是 `command` 路径不对或 kimi 没登录。先在终端跑一次 `kimi acp` 验证：如果阻塞等待标准输入则说明 CLI 本身没问题，问题在 IDE 配置；如果立刻报错则按报错提示处理（多数是没 `/login`）。
-- **IDE 显示 "auth required"**：表示 CLI 没有可用的鉴权令牌。退出 IDE，在终端执行 `kimi` 完成登录后再启动 IDE 即可。
+- **会话立刻被中断 / IDE 提示 "agent exited"**：通常是 `command` 路径不对或缺少鉴权。先在终端跑一次 `kimi acp` 验证：如果阻塞等待标准输入则说明 CLI 本身没问题，问题在 IDE 配置；如果立刻报错则按报错提示处理（多数是没 `/login`，或还没配置带有 API 密钥的 provider）。
+- **IDE 显示 "auth required"**：表示 CLI 没有可用的 OAuth 登录或已配置的 API 密钥。退出 IDE，在终端完成登录或配置 provider 后再启动 IDE 即可。
 - **MCP 工具看不到**：参考 [`kimi acp`](../reference/kimi-acp.md) 中的能力表确认 IDE 配的 MCP 传输类型是否被支持。当前 Kimi Code CLI 的 ACP 适配层支持 `http`、`stdio` 与 `sse` 三种传输方式；`acp` 传输的 MCP server 会被静默丢弃并在日志中给出 warn。
 
 ## 下一步
diff --git a/packages/node-sdk/src/auth.ts b/packages/node-sdk/src/auth.ts
index 4f02747f88..77883d3863 100644
--- a/packages/node-sdk/src/auth.ts
+++ b/packages/node-sdk/src/auth.ts
@@ -5,6 +5,7 @@ import {
   writeConfigFile,
   type KimiConfig,
   type OAuthRef,
+  type ProviderConfig,
 } from '@moonshot-ai/agent-core';
 import {
   applyManagedKimiCodeConfig,
@@ -119,7 +120,26 @@ export class KimiAuthFacade {
   }
 
   async status(providerName?: string | undefined): Promise<AuthStatus> {
-    return this.toolkit.status(providerName, this.resolveRuntimeManagedAuth(providerName).oauthRef);
+    const status = await this.toolkit.status(
+      providerName,
+      this.resolveRuntimeManagedAuth(providerName).oauthRef,
+    );
+    const config = loadRuntimeConfigSafe(this.options.configPath).config;
+    const apiKeyProviderNames = new Set(
+      Object.entries(config.providers)
+        .filter(([, provider]) => hasConfiguredApiKey(provider))
+        .map(([name]) => name),
+    );
+    const providers = status.providers.map((entry) => {
+      const hasApiKey = apiKeyProviderNames.delete(entry.providerName);
+      return { ...entry, hasToken: entry.hasToken || hasApiKey };
+    });
+    if (providerName !== undefined || apiKeyProviderNames.size === 0) return { providers };
+
+    for (const providerName of apiKeyProviderNames) {
+      providers.push({ providerName, hasToken: true });
+    }
+    return { providers };
   }
 
   async login(
@@ -317,3 +337,28 @@ export class KimiAuthFacade {
     }).oauthRef;
   }
 }
+
+function hasConfiguredApiKey(provider: ProviderConfig): boolean {
+  if (nonEmpty(provider.apiKey)) return true;
+
+  switch (provider.type) {
+    case 'anthropic':
+      return nonEmpty(provider.env?.['ANTHROPIC_API_KEY']);
+    case 'openai':
+    case 'openai_responses':
+      return nonEmpty(provider.env?.['OPENAI_API_KEY']);
+    case 'kimi':
+      return nonEmpty(provider.env?.['KIMI_API_KEY']);
+    case 'google-genai':
+      return nonEmpty(provider.env?.['GOOGLE_API_KEY']);
+    case 'vertexai':
+      return (
+        nonEmpty(provider.env?.['VERTEXAI_API_KEY']) ||
+        nonEmpty(provider.env?.['GOOGLE_API_KEY'])
+      );
+  }
+}
+
+function nonEmpty(value: string | undefined): boolean {
+  return (value?.trim().length ?? 0) > 0;
+}
diff --git a/packages/node-sdk/test/auth-facade.test.ts b/packages/node-sdk/test/auth-facade.test.ts
index 978bd25780..28cec7caac 100644
--- a/packages/node-sdk/test/auth-facade.test.ts
+++ b/packages/node-sdk/test/auth-facade.test.ts
@@ -203,6 +203,71 @@ oauth = { storage = "file", key = "${oauthKey}", oauth_host = "https://auth.dev.
     });
   });
 
+  it('reports configured API-key providers as authenticated', async () => {
+    await writeFile(
+      join(homeDir, 'config.toml'),
+      `
+[providers."moonshot-cn"]
+type = "kimi"
+base_url = "https://api.example.test/v1"
+api_key = "YOUR_API_KEY"
+`,
+    );
+    const harness = createKimiHarness({ homeDir, identity: TEST_IDENTITY });
+
+    await expect(harness.auth.status()).resolves.toEqual({
+      providers: [
+        { providerName: KIMI_CODE_PROVIDER_NAME, hasToken: false },
+        { providerName: 'moonshot-cn', hasToken: true },
+      ],
+    });
+    await expect(harness.auth.status('moonshot-cn')).resolves.toEqual({
+      providers: [{ providerName: 'moonshot-cn', hasToken: true }],
+    });
+  });
+
+  it('reports env-backed API-key providers as authenticated', async () => {
+    await writeFile(
+      join(homeDir, 'config.toml'),
+      `
+[providers."moonshot-env"]
+type = "kimi"
+base_url = "https://api.example.test/v1"
+
+[providers."moonshot-env".env]
+KIMI_API_KEY = "YOUR_API_KEY"
+`,
+    );
+    const harness = createKimiHarness({ homeDir, identity: TEST_IDENTITY });
+
+    await expect(harness.auth.status()).resolves.toEqual({
+      providers: [
+        { providerName: KIMI_CODE_PROVIDER_NAME, hasToken: false },
+        { providerName: 'moonshot-env', hasToken: true },
+      ],
+    });
+    await expect(harness.auth.status('moonshot-env')).resolves.toEqual({
+      providers: [{ providerName: 'moonshot-env', hasToken: true }],
+    });
+  });
+
+  it('does not duplicate a provider with both OAuth and an API key', async () => {
+    await new FileTokenStorage(join(homeDir, 'credentials')).save('kimi-code', freshToken());
+    await writeFile(
+      join(homeDir, 'config.toml'),
+      `
+[providers."managed:kimi-code"]
+type = "kimi"
+api_key = "YOUR_API_KEY"
+`,
+    );
+    const harness = createKimiHarness({ homeDir, identity: TEST_IDENTITY });
+
+    await expect(harness.auth.status()).resolves.toEqual({
+      providers: [{ providerName: KIMI_CODE_PROVIDER_NAME, hasToken: true }],
+    });
+  });
+
   it('provisions SDK config using an existing Kimi OAuth token', async () => {
     await new FileTokenStorage(join(homeDir, 'credentials')).save('kimi-code', freshToken());
     const fetchMock = vi.fn<FetchMock>(