diff --git a/packages/opencode/src/cli/cmd/tui/plugin/runtime.ts b/packages/opencode/src/cli/cmd/tui/plugin/runtime.ts
index 1d80118912..c3c96023d5 100644
--- a/packages/opencode/src/cli/cmd/tui/plugin/runtime.ts
+++ b/packages/opencode/src/cli/cmd/tui/plugin/runtime.ts
@@ -22,6 +22,7 @@ import {
   isDeprecatedPlugin,
   pluginSource,
   readPluginId,
+  resolvePluginEntrypoint,
   resolvePluginId,
   resolvePluginTarget,
   type PluginSource,
@@ -199,14 +200,20 @@ async function loadExternalPlugin(
   const source = pluginSource(spec)
   const root = resolveRoot(source === "file" ? spec : target)
   const install_theme = createThemeInstaller(meta, root, spec)
-  const mod = await import(target)
+  const entry = await resolvePluginEntrypoint(spec, target, "tui").catch((error) => {
+    fail("failed to resolve tui plugin entry", { path: spec, target, retry, error })
+    return
+  })
+  if (!entry) return
+
+  const mod = await import(entry)
     .then((raw) => {
       const mod = getDefaultPlugin(raw) as TuiPluginModule | undefined
       if (!mod?.tui) throw new TypeError(`Plugin ${spec} must default export an object with tui()`)
       return mod
     })
     .catch((error) => {
-      fail("failed to load tui plugin", { path: spec, target, retry, error })
+      fail("failed to load tui plugin", { path: spec, target: entry, retry, error })
       return
     })
   if (!mod) return
diff --git a/packages/opencode/src/plugin/index.ts b/packages/opencode/src/plugin/index.ts
index ce51b203bf..8e42bc3ee3 100644
--- a/packages/opencode/src/plugin/index.ts
+++ b/packages/opencode/src/plugin/index.ts
@@ -14,7 +14,13 @@ import { Effect, Layer, ServiceMap, Stream } from "effect"
 import { InstanceState } from "@/effect/instance-state"
 import { makeRuntime } from "@/effect/run-service"
 import { errorMessage } from "@/util/error"
-import { getDefaultPlugin, isDeprecatedPlugin, parsePluginSpecifier, resolvePluginTarget } from "./shared"
+import {
+  getDefaultPlugin,
+  isDeprecatedPlugin,
+  parsePluginSpecifier,
+  resolvePluginEntrypoint,
+  resolvePluginTarget,
+} from "./shared"
 
 export namespace Plugin {
   const log = Log.create({ service: "plugin" })
@@ -103,9 +109,21 @@ export namespace Plugin {
     const target = await resolvePlugin(spec)
     if (!target) return
 
-    const mod = await import(target).catch((err) => {
+    const entry = await resolvePluginEntrypoint(spec, target, "server").catch((err) => {
       const message = errorMessage(err)
-      log.error("failed to load plugin", { path: spec, error: message })
+      log.error("failed to resolve plugin server entry", { path: spec, target, error: message })
+      Bus.publish(Session.Event.Error, {
+        error: new NamedError.Unknown({
+          message: `Failed to load plugin ${spec}: ${message}`,
+        }).toObject(),
+      })
+      return
+    })
+    if (!entry) return
+
+    const mod = await import(entry).catch((err) => {
+      const message = errorMessage(err)
+      log.error("failed to load plugin", { path: spec, target: entry, error: message })
       Bus.publish(Session.Event.Error, {
         error: new NamedError.Unknown({
           message: `Failed to load plugin ${spec}: ${message}`,
diff --git a/packages/opencode/src/plugin/shared.ts b/packages/opencode/src/plugin/shared.ts
index 55060c7138..c1f7232acc 100644
--- a/packages/opencode/src/plugin/shared.ts
+++ b/packages/opencode/src/plugin/shared.ts
@@ -19,11 +19,53 @@ export function parsePluginSpecifier(spec: string) {
 }
 
 export type PluginSource = "file" | "npm"
+export type PluginKind = "server" | "tui"
 
 export function pluginSource(spec: string): PluginSource {
   return spec.startsWith("file://") ? "file" : "npm"
 }
 
+function hasEntrypoint(json: Record<string, unknown>, kind: PluginKind) {
+  if (!isRecord(json.exports)) return false
+  return `./${kind}` in json.exports
+}
+
+function readEntrypointName(source: PluginSource, spec: string, json: Record<string, unknown>) {
+  if (source === "npm") return parsePluginSpecifier(spec).pkg
+  if (typeof json.name !== "string") return
+  const value = json.name.trim()
+  if (!value) return
+  return value
+}
+
+function readEntrypointPath(file: string) {
+  if (file.startsWith("file://")) return fileURLToPath(file)
+  if (path.isAbsolute(file) || /^[A-Za-z]:[\\/]/.test(file)) return file
+  throw new TypeError(`Plugin entry "${file}" is not a file path`)
+}
+
+export async function resolvePluginEntrypoint(spec: string, target: string, kind: PluginKind) {
+  const source = pluginSource(spec)
+  const pkg = await readPluginPackage(target).catch(() => undefined)
+  if (!pkg) return target
+  if (!hasEntrypoint(pkg.json, kind)) return target
+
+  const name = readEntrypointName(source, spec, pkg.json)
+  if (!name) {
+    throw new TypeError(`Plugin package ${pkg.pkg} must define package.json name to export ./${kind}`)
+  }
+
+  const ref = pathToFileURL(pkg.pkg).href
+  const entry = import.meta.resolve!(`${name}/${kind}`, ref)
+  const root = Filesystem.resolve(pkg.dir)
+  const next = Filesystem.resolve(readEntrypointPath(entry))
+  if (!Filesystem.contains(root, next)) {
+    throw new Error(`Plugin ${spec} resolved ${kind} entry outside plugin directory`)
+  }
+
+  return pathToFileURL(next).href
+}
+
 export function isPathPluginSpec(spec: string) {
   return spec.startsWith("file://") || spec.startsWith(".") || path.isAbsolute(spec) || /^[A-Za-z]:[\\/]/.test(spec)
 }
diff --git a/packages/opencode/test/cli/tui/plugin-loader-entrypoint.test.ts b/packages/opencode/test/cli/tui/plugin-loader-entrypoint.test.ts
new file mode 100644
index 0000000000..2459bddb56
--- /dev/null
+++ b/packages/opencode/test/cli/tui/plugin-loader-entrypoint.test.ts
@@ -0,0 +1,192 @@
+import { expect, spyOn, test } from "bun:test"
+import fs from "fs/promises"
+import path from "path"
+import { tmpdir } from "../../fixture/fixture"
+import { createTuiPluginApi } from "../../fixture/tui-plugin"
+import { TuiConfig } from "../../../src/config/tui"
+import { BunProc } from "../../../src/bun"
+
+const { TuiPluginRuntime } = await import("../../../src/cli/cmd/tui/plugin/runtime")
+
+function rec(value: unknown) {
+  if (!value || typeof value !== "object") return
+  return Object.fromEntries(Object.entries(value))
+}
+
+test("loads npm tui plugin from package ./tui export", async () => {
+  await using tmp = await tmpdir({
+    init: async (dir) => {
+      const mod = path.join(dir, "mods", "acme-plugin")
+      const marker = path.join(dir, "tui-called.txt")
+      await fs.mkdir(mod, { recursive: true })
+
+      await Bun.write(
+        path.join(mod, "package.json"),
+        JSON.stringify(
+          {
+            name: "acme-plugin",
+            type: "module",
+            exports: {
+              ".": "./index.js",
+              "./server": "./server.js",
+              "./tui": "./tui.js",
+            },
+          },
+          null,
+          2,
+        ),
+      )
+      await Bun.write(path.join(mod, "index.js"), 'import "./main-throws.js"\nexport default {}\n')
+      await Bun.write(path.join(mod, "main-throws.js"), 'throw new Error("main loaded")\n')
+      await Bun.write(path.join(mod, "server.js"), "export default {}\n")
+      await Bun.write(
+        path.join(mod, "tui.js"),
+        [
+          "export default {",
+          '  id: "demo.tui.export",',
+          "  tui: async (_api, options) => {",
+          "    if (!options?.marker) return",
+          `    await Bun.write(${JSON.stringify(marker)}, "called")`,
+          "  },",
+          "}",
+          "",
+        ].join("\n"),
+      )
+
+      return {
+        mod,
+        marker,
+        spec: "acme-plugin@1.0.0",
+      }
+    },
+  })
+
+  process.env.OPENCODE_PLUGIN_META_FILE = path.join(tmp.path, "plugin-meta.json")
+  const get = spyOn(TuiConfig, "get").mockResolvedValue({
+    plugin: [[tmp.extra.spec, { marker: tmp.extra.marker }]],
+    plugin_meta: {
+      [tmp.extra.spec]: {
+        scope: "local",
+        source: path.join(tmp.path, "tui.json"),
+      },
+    },
+  })
+  const wait = spyOn(TuiConfig, "waitForDependencies").mockResolvedValue()
+  const cwd = spyOn(process, "cwd").mockImplementation(() => tmp.path)
+  const install = spyOn(BunProc, "install").mockResolvedValue(tmp.extra.mod)
+
+  try {
+    await TuiPluginRuntime.init(createTuiPluginApi())
+
+    await expect(fs.readFile(tmp.extra.marker, "utf8")).resolves.toBe("called")
+    expect(TuiPluginRuntime.list().find((item) => item.id === "demo.tui.export")).toEqual({
+      id: "demo.tui.export",
+      source: "npm",
+      spec: tmp.extra.spec,
+      target: tmp.extra.mod,
+      enabled: true,
+      active: true,
+    })
+  } finally {
+    await TuiPluginRuntime.dispose()
+    install.mockRestore()
+    cwd.mockRestore()
+    get.mockRestore()
+    wait.mockRestore()
+    delete process.env.OPENCODE_PLUGIN_META_FILE
+  }
+})
+
+test("rejects npm tui export that resolves outside plugin directory", async () => {
+  await using tmp = await tmpdir({
+    init: async (dir) => {
+      const mod = path.join(dir, "mods", "acme-plugin")
+      const outside = path.join(dir, "outside")
+      const marker = path.join(dir, "outside-called.txt")
+      await fs.mkdir(mod, { recursive: true })
+      await fs.mkdir(outside, { recursive: true })
+
+      await Bun.write(
+        path.join(mod, "package.json"),
+        JSON.stringify(
+          {
+            name: "acme-plugin",
+            type: "module",
+            exports: {
+              ".": "./index.js",
+              "./tui": "./escape/tui.js",
+            },
+          },
+          null,
+          2,
+        ),
+      )
+      await Bun.write(path.join(mod, "index.js"), "export default {}\n")
+      await Bun.write(
+        path.join(outside, "tui.js"),
+        [
+          "export default {",
+          '  id: "demo.outside",',
+          "  tui: async () => {",
+          `    await Bun.write(${JSON.stringify(marker)}, "outside")`,
+          "  },",
+          "}",
+          "",
+        ].join("\n"),
+      )
+      await fs.symlink(outside, path.join(mod, "escape"), process.platform === "win32" ? "junction" : "dir")
+
+      return {
+        mod,
+        marker,
+        spec: "acme-plugin@1.0.0",
+      }
+    },
+  })
+
+  process.env.OPENCODE_PLUGIN_META_FILE = path.join(tmp.path, "plugin-meta.json")
+  const get = spyOn(TuiConfig, "get").mockResolvedValue({
+    plugin: [tmp.extra.spec],
+    plugin_meta: {
+      [tmp.extra.spec]: {
+        scope: "local",
+        source: path.join(tmp.path, "tui.json"),
+      },
+    },
+  })
+  const wait = spyOn(TuiConfig, "waitForDependencies").mockResolvedValue()
+  const cwd = spyOn(process, "cwd").mockImplementation(() => tmp.path)
+  const install = spyOn(BunProc, "install").mockResolvedValue(tmp.extra.mod)
+  const err = spyOn(console, "error").mockImplementation(() => {})
+
+  try {
+    await TuiPluginRuntime.init(createTuiPluginApi())
+
+    await expect(fs.readFile(tmp.extra.marker, "utf8")).rejects.toThrow()
+    expect(TuiPluginRuntime.list().some((item) => item.spec === tmp.extra.spec)).toBe(false)
+
+    const hit = err.mock.calls.find(
+      (item) => typeof item[0] === "string" && item[0].includes("failed to resolve tui plugin entry"),
+    )
+    expect(hit).toBeDefined()
+    if (!hit) return
+
+    const data = rec(hit[1])
+    expect(data).toBeDefined()
+    if (!data) return
+    expect(data.path).toBe(tmp.extra.spec)
+    expect(data.target).toBe(tmp.extra.mod)
+    const info = rec(data.error)
+    expect(info).toBeDefined()
+    if (!info) return
+    expect(String(info.message ?? "")).toContain("outside plugin directory")
+  } finally {
+    await TuiPluginRuntime.dispose()
+    err.mockRestore()
+    install.mockRestore()
+    cwd.mockRestore()
+    get.mockRestore()
+    wait.mockRestore()
+    delete process.env.OPENCODE_PLUGIN_META_FILE
+  }
+})
diff --git a/packages/opencode/test/plugin/loader-shared.test.ts b/packages/opencode/test/plugin/loader-shared.test.ts
index 1ada81dd63..572f790faf 100644
--- a/packages/opencode/test/plugin/loader-shared.test.ts
+++ b/packages/opencode/test/plugin/loader-shared.test.ts
@@ -196,6 +196,127 @@ describe("plugin.loader.shared", () => {
     }
   })
 
+  test("loads npm server plugin from package ./server export", async () => {
+    await using tmp = await tmpdir({
+      init: async (dir) => {
+        const mod = path.join(dir, "mods", "acme-plugin")
+        const mark = path.join(dir, "server-called.txt")
+        await fs.mkdir(mod, { recursive: true })
+
+        await Bun.write(
+          path.join(mod, "package.json"),
+          JSON.stringify(
+            {
+              name: "acme-plugin",
+              type: "module",
+              exports: {
+                ".": "./index.js",
+                "./server": "./server.js",
+                "./tui": "./tui.js",
+              },
+            },
+            null,
+            2,
+          ),
+        )
+        await Bun.write(path.join(mod, "index.js"), 'import "./main-throws.js"\nexport default {}\n')
+        await Bun.write(path.join(mod, "main-throws.js"), 'throw new Error("main loaded")\n')
+        await Bun.write(
+          path.join(mod, "server.js"),
+          [
+            "export default {",
+            "  server: async () => {",
+            `    await Bun.write(${JSON.stringify(mark)}, "called")`,
+            "    return {}",
+            "  },",
+            "}",
+            "",
+          ].join("\n"),
+        )
+        await Bun.write(path.join(mod, "tui.js"), "export default {}\n")
+
+        await Bun.write(path.join(dir, "opencode.json"), JSON.stringify({ plugin: ["acme-plugin@1.0.0"] }, null, 2))
+
+        return {
+          mod,
+          mark,
+        }
+      },
+    })
+
+    const install = spyOn(BunProc, "install").mockResolvedValue(tmp.extra.mod)
+
+    try {
+      await load(tmp.path)
+      expect(await Bun.file(tmp.extra.mark).text()).toBe("called")
+    } finally {
+      install.mockRestore()
+    }
+  })
+
+  test("rejects npm server export that resolves outside plugin directory", async () => {
+    await using tmp = await tmpdir({
+      init: async (dir) => {
+        const mod = path.join(dir, "mods", "acme-plugin")
+        const outside = path.join(dir, "outside")
+        const mark = path.join(dir, "outside-server.txt")
+        await fs.mkdir(mod, { recursive: true })
+        await fs.mkdir(outside, { recursive: true })
+
+        await Bun.write(
+          path.join(mod, "package.json"),
+          JSON.stringify(
+            {
+              name: "acme-plugin",
+              type: "module",
+              exports: {
+                ".": "./index.js",
+                "./server": "./escape/server.js",
+              },
+            },
+            null,
+            2,
+          ),
+        )
+        await Bun.write(path.join(mod, "index.js"), "export default {}\n")
+        await Bun.write(
+          path.join(outside, "server.js"),
+          [
+            "export default {",
+            "  server: async () => {",
+            `    await Bun.write(${JSON.stringify(mark)}, "outside")`,
+            "    return {}",
+            "  },",
+            "}",
+            "",
+          ].join("\n"),
+        )
+        await fs.symlink(outside, path.join(mod, "escape"), process.platform === "win32" ? "junction" : "dir")
+
+        await Bun.write(path.join(dir, "opencode.json"), JSON.stringify({ plugin: ["acme-plugin"] }, null, 2))
+
+        return {
+          mod,
+          mark,
+        }
+      },
+    })
+
+    const install = spyOn(BunProc, "install").mockResolvedValue(tmp.extra.mod)
+
+    try {
+      const errors = await errs(tmp.path)
+      const called = await Bun.file(tmp.extra.mark)
+        .text()
+        .then(() => true)
+        .catch(() => false)
+      expect(called).toBe(false)
+      expect(errors.some((x) => x.includes("outside plugin directory"))).toBe(true)
+    } finally {
+      install.mockRestore()
+    }
+  })
+
   test("skips legacy codex and copilot auth plugin specs", async () => {
     await using tmp = await tmpdir({
       init: async (dir) => {