diff --git a/docs/api/decorator-api.md b/docs/api/decorator-api.md
index 8cd7dc8..e1e6e2a 100644
--- a/docs/api/decorator-api.md
+++ b/docs/api/decorator-api.md
@@ -139,7 +139,10 @@ class CatalogServer {
 
 Use `"module": "Node16"`, `"moduleResolution": "Node16"`, and
 `"experimentalDecorators": true` for a CommonJS consumer so TypeScript selects
-the package's CJS declaration condition. The legacy entrypoint supports public
+the package's CJS declaration condition. In the same compilation, static imports
+of `@theorvane/type-mcp/http` and `@theorvane/type-mcp/langchain` also select
+their CJS `.d.cts` declarations; install `@langchain/core` when importing the
+LangChain adapter. The legacy entrypoint supports public
 instance methods with string names only; parameter, accessor, field, private,
 and symbol-named decorators are excluded. Do not mix Stage 3 and legacy
 decorators in one TypeScript compilation unit.
diff --git a/docs/guides/configuration.md b/docs/guides/configuration.md
index 5cbe02d..95425e0 100644
--- a/docs/guides/configuration.md
+++ b/docs/guides/configuration.md
@@ -1,6 +1,6 @@
 # Configuration and compatibility
 
-`@theorvane/type-mcp@0.3.0` is the published TypeScript declaration and runtime package. Configuration determines whether TypeScript emits standard decorators and whether the runtime can resolve the package's ESM/CJS exports; applications configure their own hosting and transport lifecycle around installed MCP adapters.
+`@theorvane/type-mcp@0.3.1` is the published TypeScript declaration and runtime package. Configuration determines whether TypeScript emits standard decorators and whether the runtime can resolve the package's ESM/CJS exports; applications configure their own hosting and transport lifecycle around installed MCP adapters.
 
 ## Runtime and package manager
 
@@ -41,14 +41,15 @@ Projects using Babel, SWC, or another TypeScript transpiler must confirm that th
 
 ## ESM and CommonJS
 
-The package exports both ESM and CommonJS entry points:
+The package exports ESM and CommonJS runtime and declaration conditions for the root, HTTP, and LangChain entrypoints. Node-aware TypeScript resolution selects the matching declaration form:
 
 | Consumer | Root loading form |
 | --- | --- |
 | ESM / TypeScript NodeNext | `import { McpServer } from "@theorvane/type-mcp"` |
+| CommonJS / TypeScript Node16 | `import { createMcpHandler } from "@theorvane/type-mcp/http"` |
 | CommonJS runtime | `const { McpServer } = require("@theorvane/type-mcp")` |
 
-Decorator syntax is compiled by TypeScript before Node loads the module, so the CommonJS form does not remove the requirement for a standard decorator-compatible compiler configuration. Type-only imports should use TypeScript's `import type` form for the public definition interfaces:
+For a CommonJS TypeScript project, use both `"module": "Node16"` and `"moduleResolution": "Node16"`; static imports of `@theorvane/type-mcp/http` and `@theorvane/type-mcp/langchain` then select CJS `.d.cts` declarations. `@theorvane/type-mcp/langchain` also requires its optional `@langchain/core` peer at runtime. Decorator syntax is compiled by TypeScript before Node loads the module, so the CommonJS form does not remove the requirement for a standard decorator-compatible compiler configuration. Type-only imports should use TypeScript's `import type` form for the public definition interfaces:
 
 ```ts
 import type { McpServerDefinition, McpToolOptions } from "@theorvane/type-mcp";
diff --git a/package-lock.json b/package-lock.json
index 97dde23..7064f85 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
 	"name": "@theorvane/type-mcp",
-	"version": "0.3.0",
+	"version": "0.3.1",
 	"lockfileVersion": 3,
 	"requires": true,
 	"packages": {
 		"": {
 			"name": "@theorvane/type-mcp",
-			"version": "0.3.0",
+			"version": "0.3.1",
 			"license": "MIT",
 			"dependencies": {
 				"@hono/node-server": "2.0.12",
diff --git a/package.json b/package.json
index 3d72a0e..c282643 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@theorvane/type-mcp",
-	"version": "0.3.0",
+	"version": "0.3.1",
 	"description": "Decorator-first TypeScript framework for Model Context Protocol servers",
 	"repository": {
 		"type": "git",
@@ -17,19 +17,34 @@
 	"types": "./dist/index.d.ts",
 	"exports": {
 		".": {
-			"types": "./dist/index.d.ts",
-			"import": "./dist/index.js",
-			"require": "./dist/index.cjs"
+			"import": {
+				"types": "./dist/index.d.ts",
+				"default": "./dist/index.js"
+			},
+			"require": {
+				"types": "./dist/index.d.cts",
+				"default": "./dist/index.cjs"
+			}
 		},
 		"./http": {
-			"types": "./dist/http.d.ts",
-			"import": "./dist/http.js",
-			"require": "./dist/http.cjs"
+			"import": {
+				"types": "./dist/http.d.ts",
+				"default": "./dist/http.js"
+			},
+			"require": {
+				"types": "./dist/http.d.cts",
+				"default": "./dist/http.cjs"
+			}
 		},
 		"./langchain": {
-			"types": "./dist/langchain.d.ts",
-			"import": "./dist/langchain.js",
-			"require": "./dist/langchain.cjs"
+			"import": {
+				"types": "./dist/langchain.d.ts",
+				"default": "./dist/langchain.js"
+			},
+			"require": {
+				"types": "./dist/langchain.d.cts",
+				"default": "./dist/langchain.cjs"
+			}
 		},
 		"./legacy": {
 			"import": {
diff --git a/scripts/verify-legacy-consumer.mjs b/scripts/verify-legacy-consumer.mjs
index 9f13f69..62f00fa 100644
--- a/scripts/verify-legacy-consumer.mjs
+++ b/scripts/verify-legacy-consumer.mjs
@@ -32,6 +32,7 @@ try {
 			"--no-fund",
 			tarballPath,
 			"zod",
+			"@langchain/core@1.2.3",
 			"@types/node",
 		],
 		consumer,
@@ -57,7 +58,7 @@ try {
 	);
 	writeFileSync(
 		join(consumer, "server.ts"),
-		`import { z } from "zod";\nimport { getMcpServerDefinition, McpServer, McpTool } from "@theorvane/type-mcp/legacy";\n\n@McpServer({ name: "legacy-catalog", version: "1.0.0" })\nclass LegacyCatalog {\n  @McpTool({ name: "find_product", description: "Finds a product.", input: z.object({ sku: z.string() }) })\n  findProduct({ sku }: { readonly sku: string }) { return { sku }; }\n}\n\nconst definition = getMcpServerDefinition(LegacyCatalog);\nif (definition?.tools[0]?.name !== "find_product") throw new Error("Legacy MCP definition was not registered.");\n`,
+		`import { z } from "zod";\nimport { createMcpHandler } from "@theorvane/type-mcp/http";\nimport { createLangChainTools } from "@theorvane/type-mcp/langchain";\nimport { getMcpServerDefinition, McpServer, McpTool } from "@theorvane/type-mcp/legacy";\n\n@McpServer({ name: "legacy-catalog", version: "1.0.0" })\nclass LegacyCatalog {\n  @McpTool({ name: "find_product", description: "Finds a product.", input: z.object({ sku: z.string() }) })\n  findProduct({ sku }: { readonly sku: string }) { return { sku }; }\n}\n\nconst definition = getMcpServerDefinition(LegacyCatalog);\nif (definition?.tools[0]?.name !== "find_product") throw new Error("Legacy MCP definition was not registered.");\nif (typeof createMcpHandler !== "function") throw new Error("CJS http export missing.");\nif (typeof createLangChainTools !== "function") throw new Error("CJS langchain export missing.");\n`,
 	);
 	run(
 		resolve(packageRoot, "node_modules/typescript/bin/tsc"),
diff --git a/scripts/verify-package-exports.mjs b/scripts/verify-package-exports.mjs
index 5c415b6..a8c6faf 100644
--- a/scripts/verify-package-exports.mjs
+++ b/scripts/verify-package-exports.mjs
@@ -60,7 +60,8 @@ for (const { key, symbols } of exportsToVerify) {
 		typeof importExport.types !== "string" ||
 		typeof requireExport !== "object" ||
 		requireExport === null ||
-		typeof requireExport.default !== "string"
+		typeof requireExport.default !== "string" ||
+		typeof requireExport.types !== "string"
 	) {
 		throw new Error(`${manifest.name}: invalid ${key} export map`);
 	}
@@ -68,11 +69,18 @@ for (const { key, symbols } of exportsToVerify) {
 	const esmPath = resolve(root, importExport.default);
 	const cjsPath = resolve(root, requireExport.default);
 	const typesPath = resolve(root, importExport.types);
-	await Promise.all([access(esmPath), access(cjsPath), access(typesPath)]);
+	const cjsTypesPath = resolve(root, requireExport.types);
+	await Promise.all([
+		access(esmPath),
+		access(cjsPath),
+		access(typesPath),
+		access(cjsTypesPath),
+	]);
 
-	const [esm, typeDeclarations] = await Promise.all([
+	const [esm, typeDeclarations, cjsTypeDeclarations] = await Promise.all([
 		import(pathToFileURL(esmPath).href),
 		readFile(typesPath, "utf8"),
+		readFile(cjsTypesPath, "utf8"),
 	]);
 	const require = createRequire(manifestPath);
 	const cjs = require(cjsPath);
@@ -83,7 +91,10 @@ for (const { key, symbols } of exportsToVerify) {
 				`${manifest.name}: missing ${key} ${name} runtime export`,
 			);
 		}
-		if (!typeDeclarations.includes(name)) {
+		if (
+			!typeDeclarations.includes(name) ||
+			!cjsTypeDeclarations.includes(name)
+		) {
 			throw new Error(`${manifest.name}: missing ${key} ${name} type export`);
 		}
 	}
diff --git a/scripts/verify-publish-readiness.mjs b/scripts/verify-publish-readiness.mjs
index b7b12cb..4863e70 100644
--- a/scripts/verify-publish-readiness.mjs
+++ b/scripts/verify-publish-readiness.mjs
@@ -24,12 +24,15 @@ for (const expected of [
 	"dist/index.js",
 	"dist/index.cjs",
 	"dist/index.d.ts",
+	"dist/index.d.cts",
 	"dist/http.js",
 	"dist/http.cjs",
 	"dist/http.d.ts",
+	"dist/http.d.cts",
 	"dist/langchain.js",
 	"dist/langchain.cjs",
 	"dist/langchain.d.ts",
+	"dist/langchain.d.cts",
 ]) {
 	if (!files.has(expected)) {
 		throw new Error(`${manifest.name}: tarball is missing ${expected}`);
diff --git a/test/langchain-package-contract.test.ts b/test/langchain-package-contract.test.ts
index b800c9b..a1e613c 100644
--- a/test/langchain-package-contract.test.ts
+++ b/test/langchain-package-contract.test.ts
@@ -18,9 +18,14 @@ describe("LangChain adapter package contract", () => {
 		) as PackageManifest;
 
 		expect(manifest.exports?.["./langchain"]).toEqual({
-			types: "./dist/langchain.d.ts",
-			import: "./dist/langchain.js",
-			require: "./dist/langchain.cjs",
+			import: {
+				types: "./dist/langchain.d.ts",
+				default: "./dist/langchain.js",
+			},
+			require: {
+				types: "./dist/langchain.d.cts",
+				default: "./dist/langchain.cjs",
+			},
 		});
 		expect(manifest.peerDependencies?.["@langchain/core"]).toBe("^1.2.3");
 		expect(manifest.peerDependenciesMeta?.["@langchain/core"]?.optional).toBe(