diff --git a/examples/computesdk/src/computesdk.ts b/examples/computesdk/src/computesdk.ts
index 46f43d6e..21ca596d 100644
--- a/examples/computesdk/src/computesdk.ts
+++ b/examples/computesdk/src/computesdk.ts
@@ -10,7 +10,7 @@ import {
   type ProviderName,
 } from "computesdk";
 import { SandboxAgent } from "sandbox-agent";
-import { detectAgent, buildInspectorUrl } from "@sandbox-agent/example-shared";
+import { detectAgent, buildInspectorUrl, generateInstallCommand, type SandboxAgentComponent } from "@sandbox-agent/example-shared";
 import { fileURLToPath } from "node:url";
 import { resolve } from "node:path";
 
@@ -90,18 +90,12 @@ export async function setupComputeSdkSandboxAgent(): Promise<{
     return result;
   };
 
-  console.log("Installing sandbox-agent...");
-  await run("curl -fsSL https://releases.rivet.dev/sandbox-agent/latest/install.sh | sh");
-
-  if (env.ANTHROPIC_API_KEY) {
-    console.log("Installing Claude agent...");
-    await run("sandbox-agent install-agent claude");
-  }
+  const components: SandboxAgentComponent[] = [];
+  if (env.ANTHROPIC_API_KEY) components.push("claude");
+  if (env.OPENAI_API_KEY) components.push("codex");
 
-  if (env.OPENAI_API_KEY) {
-    console.log("Installing Codex agent...");
-    await run("sandbox-agent install-agent codex");
-  }
+  console.log("Installing sandbox-agent...");
+  await run(generateInstallCommand({ components }));
 
   console.log("Starting server...");
   await run(`sandbox-agent server --no-token --host 0.0.0.0 --port ${PORT}`, { background: true });
diff --git a/examples/daytona/src/daytona-with-snapshot.ts b/examples/daytona/src/daytona-with-snapshot.ts
index 661d303b..117cd0eb 100644
--- a/examples/daytona/src/daytona-with-snapshot.ts
+++ b/examples/daytona/src/daytona-with-snapshot.ts
@@ -1,6 +1,6 @@
 import { Daytona, Image } from "@daytonaio/sdk";
 import { SandboxAgent } from "sandbox-agent";
-import { detectAgent, buildInspectorUrl } from "@sandbox-agent/example-shared";
+import { detectAgent, buildInspectorUrl, generateInstallCommand } from "@sandbox-agent/example-shared";
 
 const daytona = new Daytona();
 
@@ -11,7 +11,7 @@ if (process.env.OPENAI_API_KEY) envVars.OPENAI_API_KEY = process.env.OPENAI_API_
 // Build a custom image with sandbox-agent pre-installed (slower first run, faster subsequent runs)
 const image = Image.base("ubuntu:22.04").runCommands(
   "apt-get update && apt-get install -y curl ca-certificates",
-  "curl -fsSL https://releases.rivet.dev/sandbox-agent/0.3.x/install.sh | sh",
+  generateInstallCommand(),
 );
 
 console.log("Creating Daytona sandbox (first run builds the base image and may take a few minutes, subsequent runs are fast)...");
diff --git a/examples/daytona/src/index.ts b/examples/daytona/src/index.ts
index 09f4cffc..5b67587c 100644
--- a/examples/daytona/src/index.ts
+++ b/examples/daytona/src/index.ts
@@ -1,32 +1,67 @@
-import { Daytona } from "@daytonaio/sdk";
+import { Daytona, Image } from "@daytonaio/sdk";
+import fs from "node:fs";
+import os from "node:os";
+import path from "node:path";
 import { SandboxAgent } from "sandbox-agent";
-import { detectAgent, buildInspectorUrl } from "@sandbox-agent/example-shared";
+import {
+  SANDBOX_AGENT_IMAGE,
+  SANDBOX_AGENT_INSTALL_VERSION,
+  buildCredentialEnv,
+  buildInspectorUrl,
+  detectAgent,
+  generateBaseImageDockerfile,
+  getPreinstallComponents,
+} from "@sandbox-agent/example-shared";
 
 const daytona = new Daytona();
 
-const envVars: Record<string, string> = {};
-if (process.env.ANTHROPIC_API_KEY) envVars.ANTHROPIC_API_KEY = process.env.ANTHROPIC_API_KEY;
-if (process.env.OPENAI_API_KEY) envVars.OPENAI_API_KEY = process.env.OPENAI_API_KEY;
+const envVars = buildCredentialEnv();
+const agent = detectAgent();
+const components = getPreinstallComponents(agent);
+const componentSuffix = components.length > 0 ? components.join("-") : "base";
+const baseImage = process.env.SANDBOX_AGENT_DAYTONA_IMAGE ?? SANDBOX_AGENT_IMAGE;
+const snapshotName = process.env.SANDBOX_AGENT_DAYTONA_SNAPSHOT ?? `sandbox-agent-${SANDBOX_AGENT_INSTALL_VERSION.replaceAll(".", "-")}-${componentSuffix}`;
 
-// Use default image and install sandbox-agent at runtime (faster startup, no snapshot build)
-console.log("Creating Daytona sandbox...");
-const sandbox = await daytona.create({ envVars, autoStopInterval: 0 });
+async function ensureSnapshot(name: string) {
+  try {
+    return await daytona.snapshot.get(name);
+  } catch {
+    console.log(`Building Daytona snapshot ${name} from ${baseImage}...`);
+    const dockerfileDir = fs.mkdtempSync(path.join(os.tmpdir(), "sandbox-agent-daytona-"));
+    const dockerfilePath = path.join(dockerfileDir, "Dockerfile");
+    fs.writeFileSync(
+      dockerfilePath,
+      generateBaseImageDockerfile({
+        image: baseImage,
+        components,
+      }),
+      "utf8",
+    );
 
-// Install sandbox-agent and start server
-console.log("Installing sandbox-agent...");
-await sandbox.process.executeCommand("curl -fsSL https://releases.rivet.dev/sandbox-agent/0.3.x/install.sh | sh");
+    const image = Image.fromDockerfile(dockerfilePath)
+      .workdir("/home/sandbox")
+      .entrypoint(["sandbox-agent", "server", "--no-token", "--host", "0.0.0.0", "--port", "3000"]);
 
-console.log("Installing agents...");
-await sandbox.process.executeCommand("sandbox-agent install-agent claude");
-await sandbox.process.executeCommand("sandbox-agent install-agent codex");
+    try {
+      const snapshot = await daytona.snapshot.create({ name, image }, { timeout: 180, onLogs: (line) => console.log(line) });
 
-await sandbox.process.executeCommand("nohup sandbox-agent server --no-token --host 0.0.0.0 --port 3000 >/tmp/sandbox-agent.log 2>&1 &");
+      return await daytona.snapshot.activate(snapshot).catch(() => snapshot);
+    } finally {
+      fs.rmSync(dockerfileDir, { recursive: true, force: true });
+    }
+  }
+}
+
+const snapshot = await ensureSnapshot(snapshotName);
+
+console.log(`Creating Daytona sandbox from snapshot ${snapshot.name}...`);
+const sandbox = await daytona.create({ envVars, snapshot: snapshot.name, autoStopInterval: 0 }, { timeout: 180 });
 
 const baseUrl = (await sandbox.getSignedPreviewUrl(3000, 4 * 60 * 60)).url;
 
 console.log("Connecting to server...");
 const client = await SandboxAgent.connect({ baseUrl });
-const session = await client.createSession({ agent: detectAgent(), sessionInit: { cwd: "/home/daytona", mcpServers: [] } });
+const session = await client.createSession({ agent, sessionInit: { cwd: "/home/sandbox", mcpServers: [] } });
 const sessionId = session.id;
 
 console.log(`  UI: ${buildInspectorUrl({ baseUrl, sessionId })}`);
diff --git a/examples/docker/src/index.ts b/examples/docker/src/index.ts
index c6f29c2c..115ceda0 100644
--- a/examples/docker/src/index.ts
+++ b/examples/docker/src/index.ts
@@ -2,7 +2,7 @@ import Docker from "dockerode";
 import fs from "node:fs";
 import path from "node:path";
 import { SandboxAgent } from "sandbox-agent";
-import { detectAgent, buildInspectorUrl } from "@sandbox-agent/example-shared";
+import { detectAgent, buildInspectorUrl, generateInstallCommand } from "@sandbox-agent/example-shared";
 
 const IMAGE = "node:22-bookworm-slim";
 const PORT = 3000;
@@ -35,7 +35,7 @@ const container = await docker.createContainer({
       "apt-get update",
       "DEBIAN_FRONTEND=noninteractive apt-get install -y curl ca-certificates bash libstdc++6",
       "rm -rf /var/lib/apt/lists/*",
-      "curl -fsSL https://releases.rivet.dev/sandbox-agent/0.3.x/install.sh | sh",
+      generateInstallCommand(),
       `sandbox-agent server --no-token --host 0.0.0.0 --port ${PORT}`,
     ].join(" && "),
   ],
diff --git a/examples/e2b/src/index.ts b/examples/e2b/src/index.ts
index 7dd28820..ff625f1f 100644
--- a/examples/e2b/src/index.ts
+++ b/examples/e2b/src/index.ts
@@ -1,38 +1,78 @@
-import { Sandbox } from "@e2b/code-interpreter";
+import { Sandbox, Template, defaultBuildLogger } from "@e2b/code-interpreter";
 import { SandboxAgent } from "sandbox-agent";
-import { detectAgent, buildInspectorUrl } from "@sandbox-agent/example-shared";
+import {
+  SANDBOX_AGENT_IMAGE,
+  SANDBOX_AGENT_INSTALL_VERSION,
+  buildCredentialEnv,
+  buildInspectorUrl,
+  detectAgent,
+  getPreinstallComponents,
+} from "@sandbox-agent/example-shared";
 
-const envs: Record<string, string> = {};
-if (process.env.ANTHROPIC_API_KEY) envs.ANTHROPIC_API_KEY = process.env.ANTHROPIC_API_KEY;
-if (process.env.OPENAI_API_KEY) envs.OPENAI_API_KEY = process.env.OPENAI_API_KEY;
+const envs = buildCredentialEnv();
+const agent = detectAgent();
+const components = getPreinstallComponents(agent);
+const componentSuffix = components.length > 0 ? components.join("-") : "base";
+const baseImage = process.env.SANDBOX_AGENT_E2B_IMAGE ?? SANDBOX_AGENT_IMAGE;
+const templateName = process.env.SANDBOX_AGENT_E2B_TEMPLATE ?? `sandbox-agent-${SANDBOX_AGENT_INSTALL_VERSION.replaceAll(".", "-")}-${componentSuffix}`;
 
-console.log("Creating E2B sandbox...");
-const sandbox = await Sandbox.create({ allowInternetAccess: true, envs });
+async function ensureTemplate(name: string): Promise<string> {
+  if (await Template.exists(name)) {
+    return name;
+  }
+  return buildTemplate(name);
+}
 
-const run = async (cmd: string) => {
-  const result = await sandbox.commands.run(cmd);
-  if (result.exitCode !== 0) throw new Error(`Command failed: ${cmd}\n${result.stderr}`);
-  return result;
-};
+async function buildTemplate(name: string): Promise<string> {
+  console.log(`Building E2B template ${name} from ${baseImage}...`);
+
+  let templateBuilder = Template().fromImage(baseImage);
+  if (components.includes("codex")) {
+    templateBuilder = templateBuilder.setUser("root").aptInstall("npm").setUser("user");
+  }
+  for (const component of components) {
+    templateBuilder = templateBuilder.runCmd(`sandbox-agent install-agent ${component}`);
+  }
+  const template = templateBuilder;
+
+  await Template.build(template, name, {
+    onBuildLogs: defaultBuildLogger(),
+  });
 
-console.log("Installing sandbox-agent...");
-await run("curl -fsSL https://releases.rivet.dev/sandbox-agent/0.3.x/install.sh | sh");
+  return name;
+}
 
-console.log("Installing agents...");
-await run("sandbox-agent install-agent claude");
-await run("sandbox-agent install-agent codex");
+function isMissingTemplateError(error: unknown): boolean {
+  return error instanceof Error && /template '.*' not found/.test(error.message);
+}
 
-console.log("Starting server...");
-await sandbox.commands.run("sandbox-agent server --no-token --host 0.0.0.0 --port 3000", { background: true, timeoutMs: 0 });
+const resolvedTemplate = await ensureTemplate(templateName);
+
+console.log(`Creating E2B sandbox from template ${resolvedTemplate}...`);
+let sandbox;
+try {
+  sandbox = await Sandbox.create(resolvedTemplate, { allowInternetAccess: true, envs });
+} catch (error) {
+  if (!process.env.SANDBOX_AGENT_E2B_TEMPLATE && isMissingTemplateError(error)) {
+    const fallbackTemplate = `${templateName}-${Date.now()}`;
+    console.log(`Template ${resolvedTemplate} is stale; rebuilding as ${fallbackTemplate}...`);
+    sandbox = await Sandbox.create(await buildTemplate(fallbackTemplate), { allowInternetAccess: true, envs });
+  } else {
+    throw error;
+  }
+}
 
 const baseUrl = `https://${sandbox.getHost(3000)}`;
+const token = sandbox.trafficAccessToken;
+
+await sandbox.commands.run("sandbox-agent server --no-token --host 0.0.0.0 --port 3000", { background: true });
 
 console.log("Connecting to server...");
-const client = await SandboxAgent.connect({ baseUrl });
-const session = await client.createSession({ agent: detectAgent(), sessionInit: { cwd: "/home/user", mcpServers: [] } });
+const client = await SandboxAgent.connect({ baseUrl, token });
+const session = await client.createSession({ agent, sessionInit: { cwd: "/home/user", mcpServers: [] } });
 const sessionId = session.id;
 
-console.log(`  UI: ${buildInspectorUrl({ baseUrl, sessionId })}`);
+console.log(`  UI: ${buildInspectorUrl({ baseUrl, token, sessionId })}`);
 console.log("  Press Ctrl+C to stop.");
 
 const keepAlive = setInterval(() => {}, 60_000);
diff --git a/examples/shared/src/docker.ts b/examples/shared/src/docker.ts
index 80c39162..15716986 100644
--- a/examples/shared/src/docker.ts
+++ b/examples/shared/src/docker.ts
@@ -6,10 +6,10 @@ import { PassThrough } from "node:stream";
 import { fileURLToPath } from "node:url";
 
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
-const EXAMPLE_IMAGE = "sandbox-agent-examples:latest";
-const EXAMPLE_IMAGE_DEV = "sandbox-agent-examples-dev:latest";
-const DOCKERFILE_DIR = path.resolve(__dirname, "..");
-const REPO_ROOT = path.resolve(DOCKERFILE_DIR, "../..");
+const REPO_ROOT = path.resolve(__dirname, "..", "..", "..");
+
+/** Pre-built Docker image with all agents installed. */
+export const FULL_IMAGE = "rivetdev/sandbox-agent:0.3.1-full";
 
 export interface DockerSandboxOptions {
   /** Container port used by sandbox-agent inside Docker. */
@@ -18,7 +18,7 @@ export interface DockerSandboxOptions {
   hostPort?: number;
   /** Additional shell commands to run before starting sandbox-agent. */
   setupCommands?: string[];
-  /** Docker image to use. Defaults to the pre-built sandbox-agent-examples image. */
+  /** Docker image to use. Defaults to the pre-built full image. */
   image?: string;
 }
 
@@ -131,33 +131,44 @@ function stripAnsi(value: string): string {
   return value.replace(/[\u001B\u009B][[\]()#;?]*(?:(?:[a-zA-Z\d]*(?:;[a-zA-Z\d]*)*)?\u0007|(?:\d{1,4}(?:;\d{0,4})*)?[0-9A-ORZcf-nqry=><])/g, "");
 }
 
-async function ensureExampleImage(_docker: Docker): Promise<string> {
-  const dev = !!process.env.SANDBOX_AGENT_DEV;
-  const imageName = dev ? EXAMPLE_IMAGE_DEV : EXAMPLE_IMAGE;
-
-  if (dev) {
-    console.log("  Building sandbox image from source (may take a while, only runs once)...");
-    try {
-      execFileSync("docker", ["build", "-t", imageName, "-f", path.join(DOCKERFILE_DIR, "Dockerfile.dev"), REPO_ROOT], {
-        stdio: ["ignore", "ignore", "pipe"],
-      });
-    } catch (err: unknown) {
-      const stderr = err instanceof Error && "stderr" in err ? String((err as { stderr: unknown }).stderr) : "";
-      throw new Error(`Failed to build sandbox image: ${stderr}`);
-    }
-  } else {
-    console.log("  Building sandbox image (may take a while, only runs once)...");
+async function ensureImage(docker: Docker, image: string): Promise<void> {
+  const buildFromSource = () => {
+    console.log("  Building sandbox image from source (may take a while)...");
     try {
-      execFileSync("docker", ["build", "-t", imageName, DOCKERFILE_DIR], {
-        stdio: ["ignore", "ignore", "pipe"],
+      execFileSync("docker", ["build", "-t", image, "-f", path.join(REPO_ROOT, "docker/runtime/Dockerfile.full"), REPO_ROOT], {
+        stdio: "inherit",
       });
-    } catch (err: unknown) {
-      const stderr = err instanceof Error && "stderr" in err ? String((err as { stderr: unknown }).stderr) : "";
-      throw new Error(`Failed to build sandbox image: ${stderr}`);
+    } catch (err) {
+      const message = err instanceof Error ? err.message : String(err);
+      throw new Error(`Failed to build sandbox image: ${message}`);
     }
+  };
+
+  if (process.env.SANDBOX_AGENT_DEV) {
+    buildFromSource();
+    return;
   }
 
-  return imageName;
+  try {
+    await docker.getImage(image).inspect();
+    return;
+  } catch {}
+
+  console.log(`  Pulling ${image}...`);
+  const pulled = await new Promise<boolean>((resolve) => {
+    docker.pull(image, (err: Error | null, stream: NodeJS.ReadableStream) => {
+      if (err) {
+        resolve(false);
+        return;
+      }
+      docker.modem.followProgress(stream, (progressErr: Error | null) => resolve(!progressErr));
+    });
+  });
+
+  if (!pulled) {
+    console.log(`  Could not pull ${image}; falling back to a local full-image build.`);
+    buildFromSource();
+  }
 }
 
 /**
@@ -166,8 +177,7 @@ async function ensureExampleImage(_docker: Docker): Promise<string> {
  */
 export async function startDockerSandbox(opts: DockerSandboxOptions): Promise<DockerSandbox> {
   const { port, hostPort } = opts;
-  const useCustomImage = !!opts.image;
-  let image = opts.image ?? EXAMPLE_IMAGE;
+  const image = opts.image ?? FULL_IMAGE;
   // TODO: Replace setupCommands shell bootstrapping with native sandbox-agent exec API once available.
   const setupCommands = [...(opts.setupCommands ?? [])];
   const credentialEnv = collectCredentialEnv();
@@ -197,27 +207,13 @@ export async function startDockerSandbox(opts: DockerSandboxOptions): Promise<Do
 
   const docker = new Docker({ socketPath: "/var/run/docker.sock" });
 
-  if (useCustomImage) {
-    try {
-      await docker.getImage(image).inspect();
-    } catch {
-      console.log(`  Pulling ${image}...`);
-      await new Promise<void>((resolve, reject) => {
-        docker.pull(image, (err: Error | null, stream: NodeJS.ReadableStream) => {
-          if (err) return reject(err);
-          docker.modem.followProgress(stream, (err: Error | null) => (err ? reject(err) : resolve()));
-        });
-      });
-    }
-  } else {
-    image = await ensureExampleImage(docker);
-  }
+  await ensureImage(docker, image);
 
   const bootCommands = [...setupCommands, `sandbox-agent server --no-token --host 0.0.0.0 --port ${port}`];
 
   const container = await docker.createContainer({
     Image: image,
-    WorkingDir: "/root",
+    WorkingDir: "/home/sandbox",
     Cmd: ["sh", "-c", bootCommands.join(" && ")],
     Env: [...Object.entries(credentialEnv).map(([key, value]) => `${key}=${value}`), ...Object.entries(bootstrapEnv).map(([key, value]) => `${key}=${value}`)],
     ExposedPorts: { [`${port}/tcp`]: {} },
diff --git a/examples/shared/src/sandbox-agent-client.ts b/examples/shared/src/sandbox-agent-client.ts
index 8efec195..bcee2954 100644
--- a/examples/shared/src/sandbox-agent-client.ts
+++ b/examples/shared/src/sandbox-agent-client.ts
@@ -3,6 +3,76 @@
  * Provides minimal helpers for connecting to and interacting with sandbox-agent servers.
  */
 
+export const SANDBOX_AGENT_INSTALL_VERSION = "0.3.1";
+export const SANDBOX_AGENT_IMAGE = `rivetdev/sandbox-agent:${SANDBOX_AGENT_INSTALL_VERSION}`;
+
+export type SandboxAgentComponent = "claude" | "codex" | "opencode" | "amp";
+
+const DIRECT_CREDENTIAL_KEYS = [
+  "ANTHROPIC_API_KEY",
+  "CLAUDE_API_KEY",
+  "CLAUDE_CODE_OAUTH_TOKEN",
+  "ANTHROPIC_AUTH_TOKEN",
+  "OPENAI_API_KEY",
+  "CODEX_API_KEY",
+  "CEREBRAS_API_KEY",
+  "OPENCODE_API_KEY",
+] as const;
+
+export function generateInstallCommand({
+  version = SANDBOX_AGENT_INSTALL_VERSION,
+  components = [],
+}: {
+  version?: string;
+  components?: SandboxAgentComponent[];
+} = {}): string {
+  const uniqueComponents = [...new Set(components)];
+
+  return [
+    `curl -fsSL https://releases.rivet.dev/sandbox-agent/${version}/install.sh | sh`,
+    ...uniqueComponents.map((component) => `sandbox-agent install-agent ${component}`),
+  ].join(" && ");
+}
+
+export function getPreinstallComponents(agent: string): SandboxAgentComponent[] {
+  return ["claude", "codex", "opencode", "amp"].includes(agent) ? [agent as SandboxAgentComponent] : [];
+}
+
+export function generateBaseImageDockerfile({
+  image = SANDBOX_AGENT_IMAGE,
+  components = [],
+}: {
+  image?: string;
+  components?: SandboxAgentComponent[];
+} = {}): string {
+  const uniqueComponents = [...new Set(components)];
+  const lines = [`FROM ${image}`];
+
+  if (uniqueComponents.includes("codex")) {
+    lines.push("USER root");
+    lines.push("RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y npm && rm -rf /var/lib/apt/lists/*");
+    lines.push("USER sandbox");
+  }
+
+  lines.push("WORKDIR /home/sandbox");
+  for (const component of uniqueComponents) {
+    lines.push(`RUN sandbox-agent install-agent ${component}`);
+  }
+
+  return `${lines.join("\n")}\n`;
+}
+
+export function buildCredentialEnv(): Record<string, string> {
+  const env: Record<string, string> = {};
+  for (const key of DIRECT_CREDENTIAL_KEYS) {
+    const value = process.env[key];
+    if (value) {
+      env[key] = value;
+    }
+  }
+  return env;
+}
+
 function normalizeBaseUrl(baseUrl: string): string {
   return baseUrl.replace(/\/+$/, "");
 }
diff --git a/examples/vercel/src/index.ts b/examples/vercel/src/index.ts
index 4a63bfcc..336b3450 100644
--- a/examples/vercel/src/index.ts
+++ b/examples/vercel/src/index.ts
@@ -1,6 +1,6 @@
 import { Sandbox } from "@vercel/sandbox";
 import { SandboxAgent } from "sandbox-agent";
-import { detectAgent, buildInspectorUrl } from "@sandbox-agent/example-shared";
+import { detectAgent, buildInspectorUrl, generateInstallCommand } from "@sandbox-agent/example-shared";
 
 const envs: Record<string, string> = {};
 if (process.env.ANTHROPIC_API_KEY) envs.ANTHROPIC_API_KEY = process.env.ANTHROPIC_API_KEY;
@@ -22,11 +22,7 @@ const run = async (cmd: string, args: string[] = []) => {
 };
 
 console.log("Installing sandbox-agent...");
-await run("sh", ["-c", "curl -fsSL https://releases.rivet.dev/sandbox-agent/0.3.x/install.sh | sh"]);
-
-console.log("Installing agents...");
-await run("sandbox-agent", ["install-agent", "claude"]);
-await run("sandbox-agent", ["install-agent", "codex"]);
+await run("sh", ["-c", generateInstallCommand({ components: ["claude", "codex"] })]);
 
 console.log("Starting server...");
 await sandbox.runCommand({