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fix(docs): update package name to @modelcontextprotocol/sdk #1648

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7202d48
fix(server): add limit option for express json body parser
Mar 3, 2026
f2db2a6
chore: add changeset for limit fix
Mar 9, 2026
1cb18c2
fix(docs): update package name from @modelcontextprotocol/server to @…
Mar 9, 2026
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5 changes: 5 additions & 0 deletions .changeset/mcp-limit-fix.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"@modelcontextprotocol/server": patch
---

fix(server): add limit option for express json body parser
8 changes: 4 additions & 4 deletions docs/server-quickstart.md
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Expand Up @@ -53,7 +53,7 @@ cd weather
npm init -y

# Install dependencies
npm install @modelcontextprotocol/server zod
npm install @modelcontextprotocol/sdk zod
npm install -D @types/node typescript

# Create our files
Expand All @@ -72,7 +72,7 @@ cd weather
npm init -y

# Install dependencies
npm install @modelcontextprotocol/server zod
npm install @modelcontextprotocol/sdk zod
npm install -D @types/node typescript

# Create our files
Expand Down Expand Up @@ -124,7 +124,7 @@ Now let's dive into building your server.
Add these to the top of your `src/index.ts`:

```ts source="../examples/server-quickstart/src/index.ts#prelude"
import { McpServer, StdioServerTransport } from '@modelcontextprotocol/server';
import { McpServer, StdioServerTransport } from '@modelcontextprotocol/sdk';
import * as z from 'zod/v4';

const NWS_API_BASE = 'https://api.weather.gov';
Expand Down Expand Up @@ -212,7 +212,7 @@ interface ForecastResponse {

### Registering tools

Each tool is registered with {@linkcode @modelcontextprotocol/server!server/mcp.McpServer#registerTool | server.registerTool()}, which takes the tool name, a configuration object (with description and input schema), and a callback that implements the tool logic. Let's register our two weather tools:
Each tool is registered with {@linkcode @modelcontextprotocol/sdk!server/mcp.McpServer#registerTool | server.registerTool()}, which takes the tool name, a configuration object (with description and input schema), and a callback that implements the tool logic. Let's register our two weather tools:

```ts source="../examples/server-quickstart/src/index.ts#registerTools"
// Register weather tools
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8 changes: 6 additions & 2 deletions packages/middleware/express/src/express.ts
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Expand Up @@ -22,6 +22,10 @@ export interface CreateMcpExpressAppOptions {
* to restrict which hostnames are allowed.
*/
allowedHosts?: string[];
/**
* Controls the maximum request body size.
*/
limit?: string;
}

/**
Expand Down Expand Up @@ -51,10 +55,10 @@ export interface CreateMcpExpressAppOptions {
* ```
*/
export function createMcpExpressApp(options: CreateMcpExpressAppOptions = {}): Express {
const { host = '127.0.0.1', allowedHosts } = options;
const { host = '127.0.0.1', allowedHosts, limit } = options;

const app = express();
app.use(express.json());
app.use(limit ? express.json({ limit }) : express.json());

// If allowedHosts is explicitly provided, use that for validation
if (allowedHosts) {
Expand Down