diff --git a/.changeset/legacy-module-resolution-types.md b/.changeset/legacy-module-resolution-types.md
new file mode 100644
index 000000000..c12cb839d
--- /dev/null
+++ b/.changeset/legacy-module-resolution-types.md
@@ -0,0 +1,10 @@
+---
+'@modelcontextprotocol/client': patch
+'@modelcontextprotocol/server': patch
+'@modelcontextprotocol/node': patch
+'@modelcontextprotocol/express': patch
+'@modelcontextprotocol/fastify': patch
+'@modelcontextprotocol/hono': patch
+---
+
+Add top-level `types` field (and `typesVersions` on client/server for their subpath exports) so consumers on legacy `moduleResolution: "node"` can resolve type declarations. The `exports` map remains the source of truth for `nodenext`/`bundler` resolution. The `typesVersions` map includes entries for subpaths added by sibling PRs in this series (`zod-schemas`, `stdio`); those entries are no-ops until the corresponding `dist/*.d.mts` files exist.
diff --git a/packages/client/package.json b/packages/client/package.json
index cf9dbff6b..39f3a22ea 100644
--- a/packages/client/package.json
+++ b/packages/client/package.json
@@ -92,5 +92,16 @@
         "typescript-eslint": "catalog:devTools",
         "vitest": "catalog:devTools",
         "tsdown": "catalog:devTools"
+    },
+    "types": "./dist/index.d.mts",
+    "typesVersions": {
+        "*": {
+            "validators/cf-worker": [
+                "dist/validators/cfWorker.d.mts"
+            ],
+            "stdio": [
+                "dist/stdio.d.mts"
+            ]
+        }
     }
 }
diff --git a/packages/middleware/express/package.json b/packages/middleware/express/package.json
index 39d671b81..c7e5763ae 100644
--- a/packages/middleware/express/package.json
+++ b/packages/middleware/express/package.json
@@ -63,5 +63,6 @@
         "typescript": "catalog:devTools",
         "typescript-eslint": "catalog:devTools",
         "vitest": "catalog:devTools"
-    }
+    },
+    "types": "./dist/index.d.mts"
 }
diff --git a/packages/middleware/fastify/package.json b/packages/middleware/fastify/package.json
index d3d4c352b..0cb8eff24 100644
--- a/packages/middleware/fastify/package.json
+++ b/packages/middleware/fastify/package.json
@@ -61,5 +61,6 @@
         "typescript": "catalog:devTools",
         "typescript-eslint": "catalog:devTools",
         "vitest": "catalog:devTools"
-    }
+    },
+    "types": "./dist/index.d.mts"
 }
diff --git a/packages/middleware/hono/package.json b/packages/middleware/hono/package.json
index f23c9ccb6..497f2b127 100644
--- a/packages/middleware/hono/package.json
+++ b/packages/middleware/hono/package.json
@@ -61,5 +61,6 @@
         "typescript": "catalog:devTools",
         "typescript-eslint": "catalog:devTools",
         "vitest": "catalog:devTools"
-    }
+    },
+    "types": "./dist/index.d.mts"
 }
diff --git a/packages/middleware/node/package.json b/packages/middleware/node/package.json
index 7fcaf9106..a284ea597 100644
--- a/packages/middleware/node/package.json
+++ b/packages/middleware/node/package.json
@@ -67,5 +67,6 @@
         "typescript": "catalog:devTools",
         "typescript-eslint": "catalog:devTools",
         "vitest": "catalog:devTools"
-    }
+    },
+    "types": "./dist/index.d.mts"
 }
diff --git a/packages/server/package.json b/packages/server/package.json
index b40135ec9..163583e5c 100644
--- a/packages/server/package.json
+++ b/packages/server/package.json
@@ -87,5 +87,19 @@
         "typescript": "catalog:devTools",
         "typescript-eslint": "catalog:devTools",
         "vitest": "catalog:devTools"
+    },
+    "types": "./dist/index.d.mts",
+    "typesVersions": {
+        "*": {
+            "validators/cf-worker": [
+                "dist/validators/cfWorker.d.mts"
+            ],
+            "zod-schemas": [
+                "dist/zodSchemas.d.mts"
+            ],
+            "stdio": [
+                "dist/stdio.d.mts"
+            ]
+        }
     }
 }