diff --git a/agents/reviewer/README.md b/agents/reviewer/README.md
new file mode 100644
index 000000000..77d137278
--- /dev/null
+++ b/agents/reviewer/README.md
@@ -0,0 +1,35 @@
+# @corbits/code-agent-reviewer
+
+## What this is
+
+Ready `@corbits/code-agent-reviewer` agent + independently importable components:
+`agent`, `defineAgent`, `director`, `tools`, `systemPrompt`, `config`.
+
+## Consume (runLocal)
+
+```ts
+import { agent } from "@corbits/code-agent-reviewer";
+const run = runLocal(defining(agent), env);
+```
+
+## Consume (deploy runWorkflow / hub / sidecar)
+
+Hand the same `AgentDefinition` to a workflow — the package never exports a
+workflow itself.
+
+## Remix components
+
+```ts
+import { director, tools, systemPrompt, config } from "@corbits/code-agent-reviewer";
+defineAgent({ director, ... }); // or swap tools / systemPrompt / config
+```
+
+Each of `director`, `tools`, `systemPrompt`, and `config` is a named,
+independently importable part.
+
+## Single authority
+
+`prompt.ts` `systemPrompt.build()` is byte-stable (the raw card, no formatting).
+`toolset.ts` `tools` literal equals the `REVIEW_TOOLS` surface constant in
+`src/agent/directors/tool-sets.ts`; drift is enforced by the in-tree drift-guard
+`src/agent/directors/reviewer/package.test.ts`.
diff --git a/agents/reviewer/package.json b/agents/reviewer/package.json
new file mode 100644
index 000000000..60e6b4da1
--- /dev/null
+++ b/agents/reviewer/package.json
@@ -0,0 +1,13 @@
+{
+  "name": "@corbits/code-agent-reviewer",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "license": "SEE LICENSE IN LICENSE.md",
+  "exports": {
+    ".": {
+      "types": "./src/index.ts",
+      "default": "./src/index.ts"
+    }
+  }
+}
diff --git a/agents/reviewer/src/agent.ts b/agents/reviewer/src/agent.ts
new file mode 100644
index 000000000..722791427
--- /dev/null
+++ b/agents/reviewer/src/agent.ts
@@ -0,0 +1,17 @@
+import {
+  defineAgent as coreDefineAgent,
+  type AgentDefinition,
+} from "@intx/agent";
+import { systemPrompt } from "./prompt.js";
+
+export const agent: AgentDefinition = defineAgent();
+
+export function defineAgent(): AgentDefinition {
+  return coreDefineAgent({
+    id: "reviewer",
+    systemPrompt: systemPrompt.build(),
+    tools: [], // tool mounting is consumer/app-side; surface enforced by drift-guard
+    capabilities: [],
+    inference: { sources: [] },
+  });
+}
diff --git a/agents/reviewer/src/config.ts b/agents/reviewer/src/config.ts
new file mode 100644
index 000000000..53a98de17
--- /dev/null
+++ b/agents/reviewer/src/config.ts
@@ -0,0 +1,9 @@
+export const config = {
+  spawn: { maySpawn: false },
+  tier: "leaf",
+  modelRole: "review",
+} as const satisfies {
+  spawn: { maySpawn: boolean };
+  tier: string;
+  modelRole: string;
+};
diff --git a/agents/reviewer/src/director.ts b/agents/reviewer/src/director.ts
new file mode 100644
index 000000000..18e8fc8ac
--- /dev/null
+++ b/agents/reviewer/src/director.ts
@@ -0,0 +1,23 @@
+import { tools } from "./toolset.js";
+import { systemPrompt } from "./prompt.js";
+import { config } from "./config.js";
+
+export const director = {
+  id: "reviewer",
+  primaryIntent:
+    "Evidence-based code defect review and verification via temporary reproduction tests; never fix product code",
+  outOfLane: [
+    "implementing product fixes",
+    "architecture essays without concrete evidence",
+    "speculative or low-confidence nitpicking",
+    "visual styling or DESIGN.md ownership",
+    "orchestrating or spawning other agents",
+  ],
+  description:
+    "Code quality and defect reviewer — evidence-based findings with temp test verification",
+  systemPrompt: systemPrompt.build(),
+  tools: { allow: [...tools] },
+  spawn: config.spawn,
+  tier: config.tier,
+  modelRole: config.modelRole,
+} as const;
diff --git a/agents/reviewer/src/index.ts b/agents/reviewer/src/index.ts
new file mode 100644
index 000000000..c2c15f6c6
--- /dev/null
+++ b/agents/reviewer/src/index.ts
@@ -0,0 +1,5 @@
+export { agent, defineAgent } from "./agent.js";
+export { director } from "./director.js";
+export { tools } from "./toolset.js";
+export { systemPrompt } from "./prompt.js";
+export { config } from "./config.js";
diff --git a/src/agent/directors/reviewer/package.ts b/agents/reviewer/src/prompt.ts
similarity index 65%
rename from src/agent/directors/reviewer/package.ts
rename to agents/reviewer/src/prompt.ts
index 138cf575d..3b660ef03 100644
--- a/src/agent/directors/reviewer/package.ts
+++ b/agents/reviewer/src/prompt.ts
@@ -1,29 +1,7 @@
-import type { DirectorPackage } from "../types.js";
-import { BUILD_TOOLS } from "../tool-sets.js";
-
-/**
- * Reviewer worker: code defect review + verify-by-temporary-test workflow.
- * Finds defects with reproducible evidence, validates hypotheses with temp tests,
- * and checks API contracts and hygiene without modifying product code.
- */
-export const reviewerPackage: DirectorPackage = {
-  id: "reviewer",
-  primaryIntent:
-    "Evidence-based code defect review and verification via temporary reproduction tests; never fix product code",
-  outOfLane: [
-    "implementing product fixes",
-    "architecture essays without concrete evidence",
-    "speculative or low-confidence nitpicking",
-    "visual styling or DESIGN.md ownership",
-    "orchestrating or spawning other agents",
-  ],
-  description:
-    "Code quality and defect reviewer — evidence-based findings with temp test verification",
-  tools: { allow: BUILD_TOOLS },
-  spawn: { maySpawn: false },
-  tier: "leaf",
-  modelRole: "review",
-  systemPrompt: `You are ReviewerDirector (Reviewer), a specialist in Corbits Code.
+// Reviewer raw director card. Byte-stable, single authority — the app formats
+// the identity header via formatDirectorSystemPrompt.
+
+const CARD = `You are ReviewerDirector (Reviewer), a specialist in Corbits Code.
 
 PRIMARY INTENT: evidence-based code review and defect verification. Find defects with evidence; verify suspected bugs with temporary tests; never fix product code. Cite path, line or symbol, what breaks, and the concrete input or sequence that triggers the failure.
 
@@ -51,5 +29,10 @@ Report envelope:
 - Findings must list each confirmed issue with Severity, Confidence, Location, Reproduction, and Impact.
 - Report "This diff is genuinely clean" when no actionable defects exist.
 
-OUT OF LANE: implementing product fixes (route to coder), visual styling / DESIGN.md (route to designer), fleet orchestration or spawning.`,
+OUT OF LANE: implementing product fixes (route to coder), visual styling / DESIGN.md (route to designer), fleet orchestration or spawning.`;
+
+// Byte-stable (see prompt authority test).
+export const systemPrompt = {
+  theme: "reviewer",
+  build: (): string => CARD,
 };
diff --git a/agents/reviewer/src/toolset.ts b/agents/reviewer/src/toolset.ts
new file mode 100644
index 000000000..182c2d6c2
--- /dev/null
+++ b/agents/reviewer/src/toolset.ts
@@ -0,0 +1,17 @@
+// REVIEWER_TOOLS literal; drift-guarded against src/agent/directors/tool-sets.ts.
+
+export const tools: readonly string[] = [
+  "read_file",
+  "grep",
+  "search_files",
+  "list_dir",
+  "lsp",
+  "run_shell",
+  "web_fetch",
+  "web_search",
+  "skill_search",
+  "use_skill",
+  "write_file",
+  "edit_file",
+  "delete_file",
+] as const;
diff --git a/agents/reviewer/tsconfig.json b/agents/reviewer/tsconfig.json
new file mode 100644
index 000000000..0d7100cbc
--- /dev/null
+++ b/agents/reviewer/tsconfig.json
@@ -0,0 +1,7 @@
+{
+  "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "noEmit": true
+  },
+  "include": ["src/**/*.ts"]
+}
diff --git a/bun.lock b/bun.lock
index 48ffba2f1..078941f24 100644
--- a/bun.lock
+++ b/bun.lock
@@ -72,6 +72,10 @@
       "name": "@corbits/code-agent-designer",
       "version": "0.1.0",
     },
+    "agents/reviewer": {
+      "name": "@corbits/code-agent-reviewer",
+      "version": "0.1.0",
+    },
     "packages/first-class-providers": {
       "name": "@corbits/first-class-providers",
       "version": "0.1.0",
@@ -269,6 +273,7 @@
     "@corbits/code-agent-dispatch": ["@corbits/code-agent-dispatch@workspace:agents/dispatch"],
     "@corbits/code-agent-warden": ["@corbits/code-agent-warden@workspace:agents/warden"],
     "@corbits/code-agent-designer": ["@corbits/code-agent-designer@workspace:agents/designer"],
+    "@corbits/code-agent-reviewer": ["@corbits/code-agent-reviewer@workspace:agents/reviewer"],
 
     "@corbits/codex-provider": ["@corbits/codex-provider@0.1.1", "", { "dependencies": { "arktype": "^2.2.3" }, "peerDependencies": { "@corbits/oauth-core": "^0.2.0", "@corbits/openai-responses": "^0.2.0", "@intx/inference": "^0.4.0", "@intx/types": "^0.4.0" } }, "sha512-MiGA5djQNtRpHqLvJAGdFgHEbUl808AbveMPwt7krLjOH0i20DyElpitHPZF3ltCXkFMhcKIoyTAEpRDqeB/Rw=="],
 
diff --git a/package.json b/package.json
index 51e2ff5d6..247dc0bf8 100644
--- a/package.json
+++ b/package.json
@@ -109,7 +109,8 @@
     "@opentui/core": "0.5.12",
     "arktype": "catalog:",
     "isomorphic-git": "catalog:",
-    "@corbits/code-agent-designer": "workspace:*"
+    "@corbits/code-agent-designer": "workspace:*",
+    "@corbits/code-agent-reviewer": "workspace:*"
   },
   "devDependencies": {
     "@intx/inference-testing": "0.3.0",
diff --git a/scripts/dead-export-allowlist.txt b/scripts/dead-export-allowlist.txt
index 21d45e8b3..7bec2e06c 100644
--- a/scripts/dead-export-allowlist.txt
+++ b/scripts/dead-export-allowlist.txt
@@ -59,6 +59,14 @@ agents/designer/src/index.ts: systemPrompt
 agents/designer/src/index.ts: config
 agents/designer/src/config.ts: satisfies
 agents/designer/src/config.ts: boolean
+agents/reviewer/src/index.ts: agent
+agents/reviewer/src/index.ts: defineAgent
+agents/reviewer/src/index.ts: director
+agents/reviewer/src/index.ts: tools
+agents/reviewer/src/index.ts: systemPrompt
+agents/reviewer/src/index.ts: config
+agents/reviewer/src/config.ts: satisfies
+agents/reviewer/src/config.ts: boolean
 
 # Versioned prompt-variance package public surface (CL-8269 lane,
 # agent-owned). Family rows data re-exported through the package entry point;
diff --git a/src/agent/directors/registry.ts b/src/agent/directors/registry.ts
index f3e6adbdf..3ec59ca88 100644
--- a/src/agent/directors/registry.ts
+++ b/src/agent/directors/registry.ts
@@ -9,7 +9,7 @@ import { coderPackage } from "./coder/package.js";
 import { explorerPackage } from "./explorer/package.js";
 import { plannerPackage } from "./planner/package.js";
 import { qaLeadPackage } from "./qa-lead/package.js";
-import { reviewerPackage } from "./reviewer/package.js";
+import { director as reviewerDirector } from "@corbits/code-agent-reviewer";
 import { formatDirectorSystemPrompt } from "./identity.js";
 import {
   DIRECTOR_IDS,
@@ -41,7 +41,7 @@ export const DIRECTOR_REGISTRY: Readonly<Record<DirectorId, DirectorPackage>> =
     explorer: explorerPackage,
     planner: plannerPackage,
     coder: coderPackage,
-    reviewer: reviewerPackage,
+    reviewer: reviewerDirector,
     designer: designerDirector,
     artist: artistDirector,
     warden: wardenDirector,
diff --git a/src/agent/directors/reviewer/package.test.ts b/src/agent/directors/reviewer/package.test.ts
new file mode 100644
index 000000000..8824153fc
--- /dev/null
+++ b/src/agent/directors/reviewer/package.test.ts
@@ -0,0 +1,47 @@
+import { describe, expect, test } from "bun:test";
+
+import {
+  director,
+  tools,
+  config,
+  systemPrompt,
+} from "@corbits/code-agent-reviewer";
+import { REVIEW_TOOLS } from "../tool-sets.js";
+import { DIRECTOR_REGISTRY } from "../registry.js";
+import type { DirectorPackage } from "../types.js";
+
+describe("reviewerPackage", () => {
+  test("workspace package satisfies the director contract and feeds the registry", () => {
+    const asDirector: DirectorPackage = director;
+    expect(asDirector.id).toBe("reviewer");
+    expect(DIRECTOR_REGISTRY.reviewer).toBe(director);
+    expect([...director.tools.allow]).toEqual([...REVIEW_TOOLS]);
+    expect(new Set(director.tools.allow).size).toBe(
+      director.tools.allow.length,
+    );
+  });
+
+  test("spawn/tier/modelRole match config", () => {
+    expect(director.spawn).toEqual(config.spawn);
+    expect(director.tier).toBe(config.tier);
+    expect(director.modelRole).toBe(config.modelRole);
+    expect(director.spawn.maySpawn).toBe(false);
+  });
+
+  test("prompt authority is byte-stable", () => {
+    expect(director.systemPrompt).toBe(systemPrompt.build());
+    expect(systemPrompt.build()).toBe(systemPrompt.build());
+  });
+
+  test("tools surface matches the tool-sets constant and is leaf-scoped", () => {
+    expect([...tools]).toEqual([...REVIEW_TOOLS]);
+    expect(tools).not.toContain("spawn_agent");
+    expect(tools).not.toContain("ask_operator");
+    expect(tools).not.toContain("wait_agents");
+    expect(tools).not.toContain("search_agents");
+  });
+
+  test("tools allowlist has no duplicates", () => {
+    expect(new Set([...tools]).size).toBe(tools.length);
+  });
+});