diff --git a/.changeset/tool-support-services.md b/.changeset/tool-support-services.md
new file mode 100644
index 0000000000..1d04752ac6
--- /dev/null
+++ b/.changeset/tool-support-services.md
@@ -0,0 +1,6 @@
+---
+"@moonshot-ai/agent-core": patch
+"@moonshot-ai/kimi-code": patch
+---
+
+Relocate shared tool service typing to the tool support layer.
diff --git a/packages/agent-core/src/agent/index.ts b/packages/agent-core/src/agent/index.ts
index d7c4124706..5473f65a58 100644
--- a/packages/agent-core/src/agent/index.ts
+++ b/packages/agent-core/src/agent/index.ts
@@ -17,7 +17,6 @@ import type { EnabledPluginSessionStart } from '#/plugin';
 import type { McpConnectionManager } from '../mcp';
 import type { PreparedSystemPromptContext, ResolvedAgentProfile } from '../profile';
 import type { ModelProvider } from '../session/provider-manager';
-import type { ToolServices } from '../runtime-types';
 import type { SessionSubagentHost } from '../session/subagent-host';
 import type { SkillRegistry } from '../skill';
 import { noopTelemetryClient, type TelemetryClient } from '../telemetry';
@@ -55,6 +54,7 @@ import {
 import { UsageRecorder } from './usage';
 import { resolveCompletionBudget } from '../utils/completion-budget';
 import type { Kaos } from '@moonshot-ai/kaos';
+import type { ToolServices } from '../tools/support/services';
 
 export type { AgentRecord, AgentRecordPersistence } from './records';
 export type { BuiltinTool, ToolInfo, ToolSource, UserToolRegistration } from './tool';
diff --git a/packages/agent-core/src/index.ts b/packages/agent-core/src/index.ts
index e13c5f64a9..670def093b 100644
--- a/packages/agent-core/src/index.ts
+++ b/packages/agent-core/src/index.ts
@@ -39,7 +39,7 @@ export type {
   BackgroundTaskKind,
   BackgroundTaskStatus,
 } from './tools/background/manager';
-export type { ToolServices } from './runtime-types';
+export type { ToolServices } from './tools/support/services';
 export { SingleModelProvider } from './session/provider-manager';
 export type {
   BearerTokenProvider,
diff --git a/packages/agent-core/src/rpc/core-impl.ts b/packages/agent-core/src/rpc/core-impl.ts
index 8b1372aecb..a20899e34b 100644
--- a/packages/agent-core/src/rpc/core-impl.ts
+++ b/packages/agent-core/src/rpc/core-impl.ts
@@ -22,7 +22,6 @@ import {
 } from '../config';
 import type { Logger } from '../logging/types';
 import { resolveSessionMcpConfig, type SessionMcpConfig } from '../mcp';
-import type { ToolServices } from '../runtime-types';
 import { Session, type SessionMeta, type SessionSkillConfig } from '../session';
 import { exportSessionDirectory } from '../session/export';
 import {
@@ -84,6 +83,7 @@ import type { ResumedAgentState, ResumeSessionResult } from './resumed';
 import type { SDKRPC } from './sdk-api';
 import { proxyWithExtraPayload } from './types';
 import { KaosShellNotFoundError, LocalKaos, type Kaos } from '@moonshot-ai/kaos';
+import type { ToolServices } from '../tools/support/services';
 
 const KIMI_CODE_PROVIDER_NAME = 'managed:kimi-code';
 
diff --git a/packages/agent-core/src/runtime-types.ts b/packages/agent-core/src/runtime-types.ts
deleted file mode 100644
index 7732feae18..0000000000
--- a/packages/agent-core/src/runtime-types.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-import type { UrlFetcher, WebSearchProvider } from './tools/builtin';
-
-export interface ToolServices {
-  readonly urlFetcher?: UrlFetcher | undefined;
-  readonly webSearcher?: WebSearchProvider | undefined;
-}
diff --git a/packages/agent-core/src/session/index.ts b/packages/agent-core/src/session/index.ts
index 7192cc6140..55af41a52d 100644
--- a/packages/agent-core/src/session/index.ts
+++ b/packages/agent-core/src/session/index.ts
@@ -28,7 +28,6 @@ import {
   type ResolvedAgentProfile,
 } from '../profile';
 import type { ProviderManager } from './provider-manager';
-import type { ToolServices } from '../runtime-types';
 import {
   registerBuiltinSkills,
   resolveSkillRoots,
@@ -39,6 +38,7 @@ import {
 } from '../skill';
 import { noopTelemetryClient, type TelemetryClient } from '../telemetry';
 import { SessionSubagentHost } from './subagent-host';
+import type { ToolServices } from '../tools/support/services';
 
 export interface SessionOptions {
   readonly kaos: Kaos;
diff --git a/packages/agent-core/src/tools/support/services.ts b/packages/agent-core/src/tools/support/services.ts
new file mode 100644
index 0000000000..ba3d67a62c
--- /dev/null
+++ b/packages/agent-core/src/tools/support/services.ts
@@ -0,0 +1,6 @@
+import type { UrlFetcher, WebSearchProvider } from '../builtin';
+
+export interface ToolServices {
+  readonly urlFetcher?: UrlFetcher;
+  readonly webSearcher?: WebSearchProvider;
+}
diff --git a/packages/agent-core/test/agent/harness/agent.ts b/packages/agent-core/test/agent/harness/agent.ts
index afe5e247c3..1944de83c1 100644
--- a/packages/agent-core/test/agent/harness/agent.ts
+++ b/packages/agent-core/test/agent/harness/agent.ts
@@ -24,7 +24,7 @@ import type { Logger } from '../../../src/logging';
 import { ProviderManager } from '../../../src/session/provider-manager';
 import type { QuestionResult, RPCCallOptions, SDKAgentRPC } from '../../../src/rpc';
 import type { AgentAPI } from '../../../src/rpc/core-api';
-import type { ToolServices } from '../../../src/runtime-types';
+import type { ToolServices } from '../../../src/tools/support/services';
 import type { TelemetryClient } from '../../../src/telemetry';
 import type { PromisifyMethods } from '../../../src/utils/types';
 import { createFakeKaos } from '../../tools/fixtures/fake-kaos';