diff --git a/src/index.ts b/src/index.ts
index 5aa1b72..12bf94b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -16,14 +16,8 @@ import { log } from "./services/logger.js";
 import type { MemoryType } from "./types/index.js";
 import { getLanguageName } from "./services/language-detector.js";
 import type { MemoryScope } from "./services/client.js";
-import {
-  createV2Client,
-  resetHostFetch,
-  setConnectedProviders,
-  setHostFetch,
-  setV2Client,
-} from "./services/ai/opencode-provider.js";
 import { getHostClientConfig } from "./services/ai/opencode-host-config.js";
+import { loadOpencodeProvider } from "./services/ai/opencode-provider-loader.js";
 
 export function isStructuredSummaryPromptMessage(userMessage: string): boolean {
   // This is the plugin's own structured-summary request. OpenCode echoes it
@@ -33,10 +27,12 @@ export function isStructuredSummaryPromptMessage(userMessage: string): boolean {
   return userMessage.includes("Analyze this conversation.") && userMessage.includes('type="skip"');
 }
 
-export function configureOpencodeHostTransport(ctx: {
+export async function configureOpencodeHostTransport(ctx: {
   readonly client: unknown;
   readonly serverUrl?: string | URL;
-}): void {
+}): Promise<void> {
+  const { createV2Client, resetHostFetch, setHostFetch, setV2Client } =
+    await loadOpencodeProvider();
   resetHostFetch();
   const hostConfig = getHostClientConfig(ctx);
   if (hostConfig.fetch) {
@@ -89,12 +85,13 @@ export const OpenCodeMemPlugin: Plugin = async (ctx: PluginInput) => {
     })();
   }
 
-  configureOpencodeHostTransport(ctx);
+  await configureOpencodeHostTransport(ctx);
 
   (async () => {
     try {
       const providerResult = await ctx.client.provider.list();
       if (providerResult.data?.connected) {
+        const { setConnectedProviders } = await loadOpencodeProvider();
         setConnectedProviders(providerResult.data.connected);
         log("opencode providers connected", {
           list: providerResult.data.connected,
diff --git a/src/services/ai/opencode-provider-loader.ts b/src/services/ai/opencode-provider-loader.ts
new file mode 100644
index 0000000..b5441dc
--- /dev/null
+++ b/src/services/ai/opencode-provider-loader.ts
@@ -0,0 +1,6 @@
+export async function loadOpencodeProvider(): Promise<OpencodeProviderModule> {
+  const providerModule: OpencodeProviderModule = await import("./opencode-provider.js");
+  return providerModule;
+}
+
+type OpencodeProviderModule = typeof import("./opencode-provider.js");
diff --git a/src/services/ai/opencode-provider.ts b/src/services/ai/opencode-provider.ts
index 28ba55e..a979cce 100644
--- a/src/services/ai/opencode-provider.ts
+++ b/src/services/ai/opencode-provider.ts
@@ -24,13 +24,14 @@
  */
 
 import type { z } from "zod";
-import { createOpencodeClient, type OpencodeClient } from "@opencode-ai/sdk/v2/client";
+import type { OpencodeClient } from "@opencode-ai/sdk/v2/client";
 import {
   diagnosticUrl,
   readJson,
   responseStatus,
   type FetchEndpoint,
 } from "./opencode-diagnostics.js";
+import { createLazyV2Client } from "./opencode-sdk-client.js";
 
 let _connectedProviders: Set<string> = new Set();
 let _v2Client: OpencodeClient | undefined;
@@ -64,7 +65,7 @@ export function getV2Client(): OpencodeClient | undefined {
 export function createV2Client(serverUrl: URL | string): OpencodeClient {
   const baseUrl = typeof serverUrl === "string" ? serverUrl : serverUrl.toString();
   _v2BaseUrl = baseUrl;
-  return createOpencodeClient({ baseUrl });
+  return createLazyV2Client(baseUrl);
 }
 
 export interface StructuredOutputOptions<T> {
diff --git a/src/services/ai/opencode-sdk-client.ts b/src/services/ai/opencode-sdk-client.ts
new file mode 100644
index 0000000..d7b0a72
--- /dev/null
+++ b/src/services/ai/opencode-sdk-client.ts
@@ -0,0 +1,39 @@
+import type { OpencodeClient } from "@opencode-ai/sdk/v2/client";
+
+type CreateOpencodeClient = (config: { readonly baseUrl: string }) => OpencodeClient;
+
+function getOpencodeSdkClientSpecifier(): string {
+  return ["@opencode-ai/sdk", "/v2/client"].join("");
+}
+
+async function createSdkClient(baseUrl: string): Promise<OpencodeClient> {
+  const sdk = (await import(getOpencodeSdkClientSpecifier())) as {
+    readonly createOpencodeClient: CreateOpencodeClient;
+  };
+  return sdk.createOpencodeClient({ baseUrl });
+}
+
+export function createLazyV2Client(baseUrl: string): OpencodeClient {
+  let sdkClientPromise: Promise<OpencodeClient> | undefined;
+  const getSdkClient = (): Promise<OpencodeClient> => {
+    sdkClientPromise ??= createSdkClient(baseUrl);
+    return sdkClientPromise;
+  };
+
+  return {
+    session: {
+      create: async (...args: Parameters<OpencodeClient["session"]["create"]>) => {
+        const client = await getSdkClient();
+        return client.session.create(...args);
+      },
+      prompt: async (...args: Parameters<OpencodeClient["session"]["prompt"]>) => {
+        const client = await getSdkClient();
+        return client.session.prompt(...args);
+      },
+      delete: async (...args: Parameters<OpencodeClient["session"]["delete"]>) => {
+        const client = await getSdkClient();
+        return client.session.delete(...args);
+      },
+    },
+  } as OpencodeClient;
+}
diff --git a/src/services/ai/profile-llm-client.ts b/src/services/ai/profile-llm-client.ts
index 14b6d04..300a6ba 100644
--- a/src/services/ai/profile-llm-client.ts
+++ b/src/services/ai/profile-llm-client.ts
@@ -1,5 +1,6 @@
 import type { OpencodeClient } from "@opencode-ai/sdk/v2/client";
 import { CONFIG } from "../../config.js";
+import { loadOpencodeProvider } from "./opencode-provider-loader.js";
 
 let _cachedClient: OpencodeClient | null = null;
 let _cachedProvider: string | null = null;
@@ -17,7 +18,7 @@ export async function getOpenCodeClient(): Promise<OpencodeClient> {
     return _cachedClient;
   }
 
-  const { isProviderConnected, getV2Client } = await import("./opencode-provider.js");
+  const { isProviderConnected, getV2Client } = await loadOpencodeProvider();
 
   if (!isProviderConnected(provider)) {
     throw new Error(
diff --git a/src/services/auto-capture.ts b/src/services/auto-capture.ts
index 2819e2a..af22cca 100644
--- a/src/services/auto-capture.ts
+++ b/src/services/auto-capture.ts
@@ -4,6 +4,7 @@ import { getTags } from "./tags.js";
 import { log } from "./logger.js";
 import { CONFIG } from "../config.js";
 import { userPromptManager, type UserPrompt } from "./user-prompt/user-prompt-manager.js";
+import { loadOpencodeProvider } from "./ai/opencode-provider-loader.js";
 
 interface ToolCallInfo {
   name: string;
@@ -349,7 +350,7 @@ async function generateSummary(
       }
 
       const { isProviderConnected, getV2Client, generateStructuredOutput } =
-        await import("./ai/opencode-provider.js");
+        await loadOpencodeProvider();
 
       // "inherit" resolves to the model opencode used for the captured prompt
       // (recorded by the chat.params hook). Without a concrete model id, the
diff --git a/src/services/user-memory-learning.ts b/src/services/user-memory-learning.ts
index bd571c1..d2120f7 100644
--- a/src/services/user-memory-learning.ts
+++ b/src/services/user-memory-learning.ts
@@ -7,6 +7,7 @@ import type { UserPrompt } from "./user-prompt/user-prompt-manager.js";
 import { userProfileManager } from "./user-profile/user-profile-manager.js";
 import { sortProfileItems } from "../utils/profile.js";
 import type { UserProfile, UserProfileData } from "./user-profile/types.js";
+import { loadOpencodeProvider } from "./ai/opencode-provider-loader.js";
 
 let isLearningRunning = false;
 
@@ -448,7 +449,7 @@ async function analyzeUserProfile(
   if (CONFIG.opencodeProvider && CONFIG.opencodeModel) {
     log("user-profile-learning: trying opencode provider");
     try {
-      const { generateStructuredOutput } = await import("./ai/opencode-provider.js");
+      const { generateStructuredOutput } = await loadOpencodeProvider();
       const { getOpenCodeClient } = await import("./ai/profile-llm-client.js");
 
       log("user-profile-learning: opencode provider diag", {
@@ -692,7 +693,7 @@ If no clear chains, return { "paths": [] }.`;
   if (CONFIG.opencodeProvider && CONFIG.opencodeModel) {
     try {
       const { z } = await import("zod");
-      const { generateStructuredOutput } = await import("./ai/opencode-provider.js");
+      const { generateStructuredOutput } = await loadOpencodeProvider();
       const { getOpenCodeClient } = await import("./ai/profile-llm-client.js");
 
       let v2Client;
diff --git a/src/services/user-profile/ai-cleanup.ts b/src/services/user-profile/ai-cleanup.ts
index 14f1d52..fbbf969 100644
--- a/src/services/user-profile/ai-cleanup.ts
+++ b/src/services/user-profile/ai-cleanup.ts
@@ -1,6 +1,7 @@
 import type { UserProfileData } from "./types.js";
 import { CONFIG } from "../../config.js";
 import { log } from "../logger.js";
+import { loadOpencodeProvider } from "../ai/opencode-provider-loader.js";
 
 export interface AICleanupResult {
   cleaned: UserProfileData;
@@ -191,7 +192,7 @@ async function callAICleanup(
   // Use opencode internal session when opencodeProvider is configured (same pattern as auto-capture)
   if (CONFIG.opencodeProvider && CONFIG.opencodeModel) {
     try {
-      const { getV2Client } = await import("../ai/opencode-provider.js");
+      const { getV2Client } = await loadOpencodeProvider();
       const v2Client = getV2Client();
       if (v2Client) {
         const result = await callViaOpencodeWithClient(v2Client, prompt);
diff --git a/src/services/user-profile/user-profile-manager.ts b/src/services/user-profile/user-profile-manager.ts
index bf366f5..05aa617 100644
--- a/src/services/user-profile/user-profile-manager.ts
+++ b/src/services/user-profile/user-profile-manager.ts
@@ -8,6 +8,7 @@ import { safeArray } from "./profile-utils.js";
 import { EmbeddingService } from "../embedding.js";
 import { log } from "../logger.js";
 import { cosineSimilarityNumbers, l2Normalize } from "../../utils/math.js";
+import { loadOpencodeProvider } from "../ai/opencode-provider-loader.js";
 
 const CENTROID_EMA_WEIGHT = 0.85;
 const CENTROID_EMA_WEIGHT_COMPLEMENT = 0.15;
@@ -1303,7 +1304,7 @@ Answer JSON only: { "duplicate": true|false, "reason": "one sentence explanation
     if (CONFIG.opencodeProvider && CONFIG.opencodeModel) {
       try {
         const { z } = await import("zod");
-        const { generateStructuredOutput } = await import("../ai/opencode-provider.js");
+        const { generateStructuredOutput } = await loadOpencodeProvider();
         const { getOpenCodeClient } = await import("../ai/profile-llm-client.js");
 
         let v2Client;
@@ -1503,7 +1504,7 @@ Answer JSON only: { "conflict": true|false, "reason": "one sentence explanation"
     if (CONFIG.opencodeProvider && CONFIG.opencodeModel) {
       try {
         const { z } = await import("zod");
-        const { generateStructuredOutput } = await import("../ai/opencode-provider.js");
+        const { generateStructuredOutput } = await loadOpencodeProvider();
         const { getOpenCodeClient } = await import("../ai/profile-llm-client.js");
 
         let v2Client;
@@ -1757,7 +1758,7 @@ Generate a concise, abstract description of the user's general behavioral tenden
     systemPrompt: string,
     userPrompt: string
   ): Promise<string | null> {
-    const { generateStructuredOutput } = await import("../ai/opencode-provider.js");
+    const { generateStructuredOutput } = await loadOpencodeProvider();
     const { getOpenCodeClient } = await import("../ai/profile-llm-client.js");
 
     let v2Client;
diff --git a/tests/auto-capture.test.ts b/tests/auto-capture.test.ts
index a3690b3..46e3b20 100644
--- a/tests/auto-capture.test.ts
+++ b/tests/auto-capture.test.ts
@@ -21,8 +21,10 @@ const promptManagerUrl = new URL(
 ).href;
 const loggerUrl = new URL("../src/services/logger.js", import.meta.url).href;
 const languageUrl = new URL("../src/services/language-detector.js", import.meta.url).href;
-const opencodeProviderUrl = new URL("../src/services/ai/opencode-provider.js", import.meta.url)
-  .href;
+const opencodeProviderLoaderUrl = new URL(
+  "../src/services/ai/opencode-provider-loader.js",
+  import.meta.url
+).href;
 
 function runScenario() {
   const dir = mkdtempSync(join(tmpdir(), "opencode-mem-auto-capture-"));
@@ -153,17 +155,19 @@ mock.module(${JSON.stringify(languageUrl)}, () => ({
   detectLanguage: () => "en",
   getLanguageName: () => "English",
 }));
-mock.module(${JSON.stringify(opencodeProviderUrl)}, () => ({
-  isProviderConnected: () => true,
-  getV2Client: () => ({}),
-  generateStructuredOutput: async ({ userPrompt }) => {
-    summaryPrompts.push(userPrompt);
-    return {
-      summary: userPrompt.includes("First request") ? "summary-first" : "summary-second",
-      type: "discussion",
-      tags: [],
-    };
-  },
+mock.module(${JSON.stringify(opencodeProviderLoaderUrl)}, () => ({
+  loadOpencodeProvider: async () => ({
+    isProviderConnected: () => true,
+    getV2Client: () => ({}),
+    generateStructuredOutput: async ({ userPrompt }) => {
+      summaryPrompts.push(userPrompt);
+      return {
+        summary: userPrompt.includes("First request") ? "summary-first" : "summary-second",
+        type: "discussion",
+        tags: [],
+      };
+    },
+  }),
 }));
 
 const { performAutoCapture } = await import(${JSON.stringify(autoCaptureUrl)});
diff --git a/tests/plugin-bundle-boundary.test.ts b/tests/plugin-bundle-boundary.test.ts
index af1b739..c183868 100644
--- a/tests/plugin-bundle-boundary.test.ts
+++ b/tests/plugin-bundle-boundary.test.ts
@@ -1,4 +1,16 @@
-import { describe, expect, it } from "bun:test";
+import { afterEach, describe, expect, it } from "bun:test";
+import { mkdtempSync, rmSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { pathToFileURL } from "node:url";
+
+const tempDirs: string[] = [];
+
+afterEach(() => {
+  for (const dir of tempDirs.splice(0)) {
+    rmSync(dir, { recursive: true, force: true });
+  }
+});
 
 describe("OpenCode plugin loader bundle boundary", () => {
   it("does not pull local embedding transformer internals into the plugin-loader bundle", async () => {
@@ -16,4 +28,43 @@ describe("OpenCode plugin loader bundle boundary", () => {
     // Guard against the old backend silently coming back too.
     expect(output).not.toContain("node_modules/@xenova/transformers");
   });
+
+  it("does not pull opencode SDK or OIDC internals into the plugin-loader bundle", async () => {
+    const result = await Bun.build({
+      entrypoints: ["./dist/plugin.js"],
+      target: "bun",
+      packages: "bundle",
+    });
+
+    expect(result.success).toBe(true);
+    const output = await result.outputs[0]!.text();
+    expect(output).not.toContain("@opencode-ai/sdk/v2/client");
+    expect(output).not.toContain("node_modules/@opencode-ai/sdk");
+    expect(output).not.toContain("@vercel/oidc");
+    expect(output).not.toContain("getVercelOidcToken");
+  });
+
+  it("resolves the provider module from a single-file bundled lazy loader", async () => {
+    const result = await Bun.build({
+      entrypoints: ["./dist/services/ai/opencode-provider-loader.js"],
+      target: "bun",
+      packages: "bundle",
+    });
+
+    expect(result.success).toBe(true);
+    const output = await result.outputs[0]!.text();
+    expect(output).not.toContain("@opencode-ai/sdk/v2/client");
+    expect(output).not.toContain("@vercel/oidc");
+
+    const dir = mkdtempSync(join(tmpdir(), "opencode-mem-provider-loader-"));
+    tempDirs.push(dir);
+    const bundlePath = join(dir, "provider-loader-bundle.mjs");
+    writeFileSync(bundlePath, output);
+
+    const mod = await import(`${pathToFileURL(bundlePath).href}?cachebust=${Date.now()}`);
+    const provider = await mod.loadOpencodeProvider();
+
+    expect(typeof provider.generateStructuredOutput).toBe("function");
+    expect(typeof provider.createV2Client).toBe("function");
+  });
 });
diff --git a/tests/plugin-host-config.test.ts b/tests/plugin-host-config.test.ts
index cd8e698..2fafacd 100644
--- a/tests/plugin-host-config.test.ts
+++ b/tests/plugin-host-config.test.ts
@@ -81,7 +81,7 @@ describe("OpenCode host client config", () => {
     globalThis.fetch = fallbackFetch;
 
     try {
-      configureOpencodeHostTransport({
+      await configureOpencodeHostTransport({
         client: { provider: { list: async () => ({ data: { connected: [] } }) } },
         serverUrl: "http://localhost:4096",
       });