# How to integrate Hashnode MCP with Vercel AI SDK v6

```json
{
  "title": "How to integrate Hashnode MCP with Vercel AI SDK v6",
  "toolkit": "Hashnode",
  "toolkit_slug": "hashnode",
  "framework": "Vercel AI SDK",
  "framework_slug": "ai-sdk",
  "url": "https://composio.dev/toolkits/hashnode/framework/ai-sdk",
  "markdown_url": "https://composio.dev/toolkits/hashnode/framework/ai-sdk.md",
  "updated_at": "2026-05-12T10:14:41.459Z"
}
```

## Introduction

This guide walks you through connecting Hashnode to Vercel AI SDK v6 using the Composio tool router. By the end, you'll have a working Hashnode agent that can list your most recent hashnode articles, check if 'devjournal.com' domain is available, fetch popular tags for trending topics through natural language commands.
This guide will help you understand how to give your Vercel AI SDK agent real control over a Hashnode account through Composio's Hashnode MCP server.
Before we dive in, let's take a quick look at the key ideas and tools involved.

## Also integrate Hashnode with

- [OpenAI Agents SDK](https://composio.dev/toolkits/hashnode/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/hashnode/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/hashnode/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/hashnode/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/hashnode/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/hashnode/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/hashnode/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/hashnode/framework/cli)
- [Google ADK](https://composio.dev/toolkits/hashnode/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/hashnode/framework/langchain)
- [Mastra AI](https://composio.dev/toolkits/hashnode/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/hashnode/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/hashnode/framework/crew-ai)

## TL;DR

Here's what you'll learn:
- How to set up and configure a Vercel AI SDK agent with Hashnode integration
- Using Composio's Tool Router to dynamically load and access Hashnode tools
- Creating an MCP client connection using HTTP transport
- Building an interactive CLI chat interface with conversation history management
- Handling tool calls and results within the Vercel AI SDK framework

## What is Vercel AI SDK?

The Vercel AI SDK is a TypeScript library for building AI-powered applications. It provides tools for creating agents that can use external services and maintain conversation state.
Key features include:
- streamText: Core function for streaming responses with real-time tool support
- MCP Client: Built-in support for Model Context Protocol via @ai-sdk/mcp
- Step Counting: Control multi-step tool execution with stopWhen: stepCountIs()
- OpenAI Provider: Native integration with OpenAI models

## What is the Hashnode MCP server, and what's possible with it?

The Hashnode MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Hashnode account. It provides structured and secure access to your blog and developer publication data, so your agent can fetch articles, manage publication invites, reply to comments, and explore tags or user details on your behalf.
- Fetch and analyze articles: Let your agent retrieve single articles or lists of posts from your publications, making it easy to summarize, review, or manage your content.
- Publication invite handling: Effortlessly accept publication invitations or view all your pending invites, streamlining the process of joining new developer teams or publications.
- Interact with comments and replies: Have your agent add replies to existing comments, enabling automated engagement and conversation management on your posts.
- Tag discovery and trend tracking: Easily fetch popular tags so your agent can suggest relevant topics, optimize your writing focus, or help you follow industry trends.
- User and publication insights: Retrieve detailed profile information for any user or publication, giving your agent the context needed for personalized recommendations and content actions.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `HASHNODE_ACCEPT_INVITE_TO_PUBLICATION` | Hashnode Accept Publication Invite | Tool to accept a publication invitation. Use when you have a valid invite token and want to join the publication. |
| `HASHNODE_ADD_COMMENT` | Hashnode Add Comment | Add a comment to a Hashnode post. Requires a valid post ID (obtainable via HASHNODE_FETCH_STORIES_FEED or HASHNODE_FETCH_POSTS) and markdown content. For replying to existing comments, use the HASHNODE_ADD_REPLY action instead. |
| `HASHNODE_ADD_CONTENT_BLOCK` | Hashnode Add Content Block | Tool to add a content block to a Hashnode documentation project. Use when you need to add embeddable content (such as code snippets, widgets, or other custom content) to a documentation project. |
| `HASHNODE_ADD_CUSTOM_MDX_COMPONENT` | Hashnode Add Custom MDX Component | Tool to add a custom MDX component to a Hashnode documentation project. Use when you need to register a new reusable React component that can be used in MDX content. Requires a project ID, component identifier, and the JavaScript/React code defining the component. |
| `HASHNODE_ADD_DOCUMENTATION_PROJECT_CUSTOM_DOMAIN` | Hashnode: Add Documentation Project Custom Domain | Tool to add a custom domain to a Hashnode documentation project. Use when setting up custom domain mapping for documentation sites. Requires projectId, domain name, and wwwDomain boolean flag. |
| `HASHNODE_ADD_REPLY` | Hashnode Add Reply | Tool to add a reply to an existing comment. Use after confirming comment ID and reply content. |
| `HASHNODE_CHECK_CUSTOM_DOMAIN_AVAILABILITY` | Hashnode: Check Custom Domain Availability | Tool to check if a custom domain is available for your Hashnode publication. Use when verifying domain mapping before setup. |
| `HASHNODE_CHECK_SUBDOMAIN_AVAILABILITY` | Hashnode: Check Subdomain Availability | Tool to check if a subdomain is available for a Hashnode publication. Use when verifying subdomain availability before creating a publication. |
| `HASHNODE_CREATE_DOCUMENTATION_API_REFERENCE` | Create Documentation API Reference | Tool to create a documentation API reference from an OpenAPI specification URL in a Hashnode project. Use when you need to import and generate API documentation from a Swagger/OpenAPI spec. Requires projectId and the URL of the API specification. |
| `HASHNODE_CREATE_DOCUMENTATION_LINK` | Create Documentation Link | Tool to create a link within a Hashnode documentation guide. Use when you need to add external or internal links to documentation pages, such as API references, GitHub repositories, or related resources. |
| `HASHNODE_CREATE_DOCUMENTATION_PROJECT` | Hashnode: Create Documentation Project | Tool to create a new documentation project on Hashnode. Use when you need to set up a documentation site for API references, product guides, or developer documentation. Requires a unique name and subdomain. |
| `HASHNODE_CREATE_DOCUMENTATION_SECTION` | Hashnode Create Documentation Section | Tool to create a new documentation section in a Hashnode documentation guide. Use when you need to add a new section to an existing documentation guide within a project. |
| `HASHNODE_CREATE_HASHNODE_DOCUMENTATION_GUIDE` | Create Hashnode Documentation Guide | Tool to create a new documentation guide in a Hashnode documentation project. Use when you need to create a new guide within an existing project. Requires a valid projectId and a name for the guide. |
| `HASHNODE_DELETE_CONTENT_BLOCK` | Hashnode Delete Content Block | Tool to delete a content block from a Hashnode documentation project. Use when you need to remove a custom content block from a project. This action is destructive and cannot be undone. |
| `HASHNODE_DELETE_CUSTOM_MDX_COMPONENT` | Hashnode Delete Custom MDX Component | Tool to delete a custom MDX component from a Hashnode documentation project. Use when removing an existing custom component that is no longer needed. This action is destructive and cannot be undone. |
| `HASHNODE_DISABLE_DOCUMENTATION_PROJECT_AI_SEARCH` | Disable Documentation Project AI Search | Tool to disable AI search for a documentation project on Hashnode. Use when you need to turn off AI-powered search capabilities for a specific documentation project. |
| `HASHNODE_FETCH_INVITATIONS` | Hashnode: Fetch Invitations | Fetch pending publication invitations for a Hashnode publication. Returns a list of pending invites that have been sent but not yet accepted. Requires the authenticated user to be a member (owner/admin/editor) of the target publication. Use this to review outstanding team invitations before sending reminders or revoking invites. |
| `HASHNODE_FETCH_POPULAR_TAGS` | Hashnode: Fetch Popular Tags | Tool to fetch a paginated list of popular tags. Use when you need to browse popular tags page by page. |
| `HASHNODE_FETCH_POSTS` | Fetch Publication Posts | Tool to fetch a paginated list of posts from a publication. Use when you need to list posts page by page for a given publication host. |
| `HASHNODE_FETCH_SERIES_POSTS` | Fetch Series Posts | Tool to fetch posts from a series within a publication. Use when retrieving and paginating through series posts in a specific publication. |
| `HASHNODE_FETCH_SINGLE_ARTICLE` | Fetch Single Article | Tool to fetch a single article by slug from a publication. Use when you need the detailed content of a specific post. |
| `HASHNODE_FETCH_STORIES_FEED` | Fetch Stories Feed | Fetch a paginated feed of stories from Hashnode. Returns posts with title, brief, author info, tags, and reading time. Supports filtering by feed type (RECENT, FEATURED, FOLLOWING, etc.), reading time range, and tags. Use cursor-based pagination via the 'after' parameter with the endCursor from previous responses. |
| `HASHNODE_FETCH_USER_DETAILS` | Hashnode: Fetch User Details | Tool to fetch detailed user profile information by username. Use when you need public or authorized profile data. |
| `HASHNODE_FOLLOW_TAGS` | Hashnode: Follow Tags | Follow specified tags to customize your content feed on Hashnode. Use when you want to subscribe to content from specific tags to personalize your feed. |
| `HASHNODE_GEN_DOC_PROJECT_PREVIEW_AUTH_TOKEN` | Generate Documentation Project Preview Authorization Token | Tool to generate a JWT authorization token for previewing a documentation project. Use when you need to obtain a JWT to access a documentation project preview. Requires a preview token that must be generated first using the generateDocumentationProjectPreviewToken mutation. |
| `HASHNODE_GET_DOCUMENTATION_PROJECT` | Get Documentation Project | Tool to fetch details of a Docs by Hashnode project by ID or hostname. Use when you need metadata for a documentation project. Provide either project ID or host domain. |
| `HASHNODE_GET_POST` | Get Post by ID | Tool to retrieve a published post by ID from Hashnode. Use when you need to fetch detailed information about a specific post for rendering or displaying. |
| `HASHNODE_GET_PUBLICATION_BY_ID_OR_HOST` | Get Publication by ID or Host | Tool to fetch publication details by ID or hostname. User can provide either publication ID or host. Use when you need metadata for a given publication. Returns comprehensive publication information including author, title, description, and configuration. |
| `HASHNODE_GET_TAG` | Hashnode: Get Tag Details | Tool to fetch detailed information about a tag by its slug. Use when you need tag metadata, follower/post counts, or logo information. |
| `HASHNODE_LIKE_COMMENT` | Hashnode Like Comment | Tool to like a comment on Hashnode. Use when you have a comment ID and want to add a like to that comment. |
| `HASHNODE_LIKE_POST` | Hashnode Like Post | Tool to like a post on Hashnode. Use when you want to add a like/reaction to a specific post. Requires a valid post ID. |
| `HASHNODE_LIKE_REPLY` | Hashnode: Like Reply | Tool to like a reply on Hashnode. Use when you have a reply ID and want to add a like to that reply. |
| `HASHNODE_LIST_PUBLICATIONS` | Hashnode: List Publications | Tool to list all publications of the authenticated user. Use when you need your publication hostnames for downstream actions. |
| `HASHNODE_LIST_TOP_COMMENTERS` | Hashnode: List Top Commenters | Tool to fetch users who have most actively participated in discussions by commenting in the last 7 days. Use when you need to identify top contributors or most engaged users. |
| `HASHNODE_MAP_DOC_PROJECT_CUSTOM_DOMAIN_WWW_REDIRECT` | Hashnode: Map Documentation Project WWW Redirect | Tool to configure WWW redirect for a documentation project's custom domain. Use when you need to enable automatic www subdomain redirection (e.g., www.docs.example.com -> docs.example.com). The project must already have a custom domain added before calling this action. |
| `HASHNODE_ME` | Hashnode: Get Current User | Retrieves profile details of the currently authenticated Hashnode user. Returns the user's identity (id, username, name), profile info (bio, tagline, profile picture, location), social links (website, github, twitter, linkedin), engagement metrics (followers/followings count), and badges. Use this action to get user context for personalization, verify authentication, or retrieve user data for display purposes. |
| `HASHNODE_MOVE_DOCUMENTATION_SIDEBAR_ITEM` | Move Documentation Sidebar Item | Tool to reorder documentation sidebar items within a Hashnode guide. Use when you need to change the position of a sidebar item or move it under a different parent section. Requires the projectId, guideSlug, and itemId. |
| `HASHNODE_PUBLISH_DOCUMENTATION_API_REFERENCE` | Publish Documentation API Reference | Tool to publish a documentation API reference in a Hashnode documentation project. Use when you need to make an API reference guide publicly available. Requires a projectId and guideSlug. |
| `HASHNODE_PUBLISH_POST` | Hashnode Publish Post | Tool to publish a new blog post to a Hashnode publication. Use when you need to create and immediately publish an article. Requires a publicationId (obtainable via HASHNODE_LIST_PUBLICATIONS), title, and markdown content. |
| `HASHNODE_REMOVE_COMMENT` | Hashnode Remove Comment | Tool to remove a comment from a Hashnode post. Use after confirming the comment ID. Returns the ID of the removed comment upon success. |
| `HASHNODE_REMOVE_DOCUMENTATION_GUIDE` | Hashnode Remove Documentation Guide | Tool to remove a documentation guide from a Hashnode project. Use after confirming the project ID and guide slug. This action is destructive and cannot be undone. |
| `HASHNODE_REMOVE_DOCUMENTATION_PROJECT` | Remove Documentation Project | Tool to remove a documentation project from Hashnode. This action frees the custom domain and subdomain and removes all guides and pages. Use after confirming the project ID to be deleted. |
| `HASHNODE_REMOVE_DOCUMENTATION_PROJECT_CUSTOM_DOMAIN` | Hashnode Remove Documentation Project Custom Domain | Tool to remove a custom domain from a Hashnode documentation project. Use when you need to detach a custom domain from a documentation project, reverting it to use only the Hashnode subdomain. |
| `HASHNODE_REMOVE_DOCUMENTATION_SIDEBAR_ITEM` | Remove Documentation Sidebar Item | Tool to remove a sidebar item from a documentation guide on Hashnode. Use when you need to delete a section or page from a guide's sidebar navigation. This action is destructive and cannot be undone. |
| `HASHNODE_REMOVE_POST` | Hashnode Remove Post | Tool to remove (delete) a post from Hashnode. Use after confirming the post ID to be deleted. This action is destructive and cannot be undone. |
| `HASHNODE_REMOVE_REPLY` | Hashnode Remove Reply | Tool to remove a reply from a comment. Use after confirming comment and reply IDs. Returns the removed reply details. |
| `HASHNODE_RENAME_DOCUMENTATION_GUIDE` | Hashnode Rename Documentation Guide | Tool to rename a documentation guide in a Hashnode project. Use when you need to update the name of an existing guide. Requires the projectId, guideSlug, and new name. |
| `HASHNODE_RENAME_DOCUMENTATION_SIDEBAR_ITEM` | Rename Documentation Sidebar Item | Tool to rename a documentation sidebar item within a Hashnode guide. Use when you need to update the display label of a sidebar item (link, page, or section). Requires the projectId, guideSlug, itemId, and new label. |
| `HASHNODE_RESTORE_POST` | Hashnode Restore Post | Tool to restore a previously deleted Hashnode post. Use when you need to undo a post deletion and make the post accessible again. Requires the post ID of the deleted post. |
| `HASHNODE_SAVE_DOCUMENTATION_PAGE_DRAFT_CONTENT` | Save Documentation Page Draft Content | Tool to save draft content for a documentation page in Hashnode. Use when you need to update the content, title, or description of an existing documentation page draft. Requires pageId and projectId, along with at least one of content, title, or description. |
| `HASHNODE_SEARCH_POSTS_OF_PUBLICATION` | Search Posts of Publication | Tool to search and retrieve posts from a specific publication based on a search query. Use when you need to find posts matching specific keywords within a particular Hashnode publication. Supports pagination and sorting by publication date. |
| `HASHNODE_SUBSCRIBE_TO_NEWSLETTER` | Subscribe to Newsletter | Tool to subscribe an email address to a Hashnode publication's newsletter. Use when you need to add a subscriber to a publication's mailing list. Requires a publicationId (obtainable via HASHNODE_LIST_PUBLICATIONS or GET_PUBLICATION) and a valid email address. |
| `HASHNODE_TOGGLE_FOLLOW_USER` | Hashnode: Toggle Follow User | Tool to toggle follow status for a Hashnode user. If you don't follow the user, this will follow them. If you already follow them, this will unfollow them. Use when you need to manage following relationships for the authenticated user. |
| `HASHNODE_UNFOLLOW_TAGS` | Hashnode: Unfollow Tags | Unfollow specified tags to customize your content feed on Hashnode. Use when you want to unsubscribe from content from specific tags to personalize your feed. |
| `HASHNODE_UNSUBSCRIBE_FROM_NEWSLETTER` | Unsubscribe from Newsletter | Tool to unsubscribe an email address from a Hashnode publication's newsletter. Use when you need to remove a subscriber from a publication's mailing list. Requires a publicationId (obtainable via HASHNODE_LIST_PUBLICATIONS or GET_PUBLICATION) and a valid email address. |
| `HASHNODE_UPDATE_COMMENT` | Hashnode Update Comment | Tool to update an existing comment on a Hashnode post. Use after preparing updated content details. |
| `HASHNODE_UPDATE_CONTENT_BLOCK` | Hashnode Update Content Block | Tool to update a content block in a Hashnode documentation project. Use when you need to modify the label or content of an existing embeddable content block (such as code snippets, widgets, or other custom content). |
| `HASHNODE_UPDATE_DOCUMENTATION_APPEARANCE` | Update Documentation Appearance | Tool to update the appearance settings of a Hashnode documentation project. Use when you need to customize the look and feel of a documentation site, including logos, colors, themes, and custom scripts. |
| `HASHNODE_UPDATE_DOCUMENTATION_GENERAL_SETTINGS` | Update Documentation General Settings | Tool to update general settings of a Hashnode documentation project. Use when you need to modify the name, description, custom CSS, or external links of an existing documentation site. Requires the project ID and at least one field to update. |
| `HASHNODE_UPDATE_DOCUMENTATION_GUIDE` | Update Hashnode Documentation Guide | Tool to update an existing documentation guide in a Hashnode project. Use when you need to modify the name, slug, or SEO meta tags of a guide. Requires the projectId and guideId of the guide to update. |
| `HASHNODE_UPDATE_DOCUMENTATION_INTEGRATIONS` | Hashnode: Update Documentation Integrations | Tool to update third-party integrations for a Docs by Hashnode project. Use when you need to configure analytics (Google Analytics, Clarity), tag management (GTM), customer support (Intercom), marketing pixels (Facebook Pixel, Hotjar), or visitor tracking (Koala) on a documentation site. |
| `HASHNODE_UPDATE_DOCUMENTATION_LINK` | Update Documentation Link | Tool to update an existing link within a Hashnode documentation guide. Use when you need to modify the label or URL of a documentation link. Requires the project ID, guide slug, link ID, and updated label (URL is optional). |
| `HASHNODE_UPDATE_DOCUMENTATION_PROJECT_SUBDOMAIN` | Hashnode: Update Documentation Project Subdomain | Tool to update the subdomain of a Hashnode documentation project. Use when you need to change the subdomain (e.g., from 'old-docs.hashnode.dev' to 'new-docs.hashnode.dev') for a documentation project. |
| `HASHNODE_UPDATE_DOCUMENTATION_SECTION` | Hashnode Update Documentation Section | Tool to update a section in a Hashnode documentation guide. Use when you need to modify the label, slug, or visibility of an existing documentation section. |
| `HASHNODE_UPDATE_POST` | Hashnode Update Post | Tool to update an existing Hashnode post via the updatePost mutation. Use when you need to modify the title, content, tags, or other attributes of an already published or drafted post. |
| `HASHNODE_UPDATE_REPLY` | Hashnode Update Reply | Tool to update a reply. Use when editing an existing reply to a comment after confirming the comment and reply IDs. |
| `HASHNODE_VERIFY_DOCUMENTATION_PROJECT_CUSTOM_DOMAIN` | Hashnode Verify Documentation Project Custom Domain | Tool to verify a custom domain for a Hashnode documentation project. Use when you need to confirm DNS configuration and activate a custom domain that was previously added to the project. |

## Supported Triggers

None listed.

## Creating MCP Server - Stand-alone vs Composio SDK

The Hashnode MCP server is an implementation of the Model Context Protocol that connects your AI agent to Hashnode. It provides structured and secure access so your agent can perform Hashnode operations on your behalf through a secure, permission-based interface.
With Composio's managed implementation, you don't have to create your own developer app. For production, if you're building an end product, we recommend using your own credentials. The managed server helps you prototype fast and go from 0-1 faster.

## Step-by-step Guide

### 1. Prerequisites

Before you begin, make sure you have:
- Node.js and npm installed
- A Composio account with API key
- An OpenAI API key

### 1. Getting API Keys for OpenAI and Composio

OpenAI API Key
- Go to the [OpenAI dashboard](https://platform.openai.com/settings/organization/api-keys) and create an API key. You'll need credits to use the models, or you can connect to another model provider.
- Keep the API key safe.
Composio API Key
- Log in to the [Composio dashboard](https://dashboard.composio.dev?utm_source=toolkits&utm_medium=framework_docs).
- Navigate to your API settings and generate a new API key.
- Store this key securely as you'll need it for authentication.

### 2. Install required dependencies

First, install the necessary packages for your project.
What you're installing:
- @ai-sdk/openai: Vercel AI SDK's OpenAI provider
- @ai-sdk/mcp: MCP client for Vercel AI SDK
- @composio/core: Composio SDK for tool integration
- ai: Core Vercel AI SDK
- dotenv: Environment variable management
```bash
npm install @ai-sdk/openai @ai-sdk/mcp @composio/core ai dotenv
```

### 3. Set up environment variables

Create a .env file in your project root.
What's needed:
- OPENAI_API_KEY: Your OpenAI API key for GPT model access
- COMPOSIO_API_KEY: Your Composio API key for tool access
- COMPOSIO_USER_ID: A unique identifier for the user session
```bash
OPENAI_API_KEY=your_openai_api_key_here
COMPOSIO_API_KEY=your_composio_api_key_here
COMPOSIO_USER_ID=your_user_id_here
```

### 4. Import required modules and validate environment

What's happening:
- We're importing all necessary libraries including Vercel AI SDK's OpenAI provider and Composio
- The dotenv/config import automatically loads environment variables
- The MCP client import enables connection to Composio's tool server
```typescript
import "dotenv/config";
import { openai } from "@ai-sdk/openai";
import { Composio } from "@composio/core";
import * as readline from "readline";
import { streamText, type ModelMessage, stepCountIs } from "ai";
import { createMCPClient } from "@ai-sdk/mcp";

const composioAPIKey = process.env.COMPOSIO_API_KEY;
const composioUserID = process.env.COMPOSIO_USER_ID;

if (!process.env.OPENAI_API_KEY) throw new Error("OPENAI_API_KEY is not set");
if (!composioAPIKey) throw new Error("COMPOSIO_API_KEY is not set");
if (!composioUserID) throw new Error("COMPOSIO_USER_ID is not set");

const composio = new Composio({
  apiKey: composioAPIKey,
});
```

### 5. Create Tool Router session and initialize MCP client

What's happening:
- We're creating a Tool Router session that gives your agent access to Hashnode tools
- The create method takes the user ID and specifies which toolkits should be available
- The returned mcp object contains the URL and authentication headers needed to connect to the MCP server
- This session provides access to all Hashnode-related tools through the MCP protocol
```typescript
async function main() {
  // Create a tool router session for the user
  const session = await composio.create(composioUserID!, {
    toolkits: ["hashnode"],
  });

  const mcpUrl = session.mcp.url;
```

### 6. Connect to MCP server and retrieve tools

What's happening:
- We're creating an MCP client that connects to our Composio Tool Router session via HTTP
- The mcp.url provides the endpoint, and mcp.headers contains authentication credentials
- The type: "http" is important - Composio requires HTTP transport
- tools() retrieves all available Hashnode tools that the agent can use
```typescript
const mcpClient = await createMCPClient({
  transport: {
    type: "http",
    url: mcpUrl,
    headers: session.mcp.headers, // Authentication headers for the Composio MCP server
  },
});

const tools = await mcpClient.tools();
```

### 7. Initialize conversation and CLI interface

What's happening:
- We initialize an empty messages array to maintain conversation history
- A readline interface is created to accept user input from the command line
- Instructions are displayed to guide the user on how to interact with the agent
```typescript
let messages: ModelMessage[] = [];

console.log("Chat started! Type 'exit' or 'quit' to end the conversation.\n");
console.log(
  "Ask any questions related to hashnode, like summarize my last 5 emails, send an email, etc... :)))\n",
);

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
  prompt: "> ",
});

rl.prompt();
```

### 8. Handle user input and stream responses with real-time tool feedback

What's happening:
- We use streamText instead of generateText to stream responses in real-time
- toolChoice: "auto" allows the model to decide when to use Hashnode tools
- stopWhen: stepCountIs(10) allows up to 10 steps for complex multi-tool operations
- onStepFinish callback displays which tools are being used in real-time
- We iterate through the text stream to create a typewriter effect as the agent responds
- The complete response is added to conversation history to maintain context
- Errors are caught and displayed with helpful retry suggestions
```typescript
rl.on("line", async (userInput: string) => {
  const trimmedInput = userInput.trim();

  if (["exit", "quit", "bye"].includes(trimmedInput.toLowerCase())) {
    console.log("\nGoodbye!");
    rl.close();
    process.exit(0);
  }

  if (!trimmedInput) {
    rl.prompt();
    return;
  }

  messages.push({ role: "user", content: trimmedInput });
  console.log("\nAgent is thinking...\n");

  try {
    const stream = streamText({
      model: openai("gpt-5"),
      messages,
      tools,
      toolChoice: "auto",
      stopWhen: stepCountIs(10),
      onStepFinish: (step) => {
        for (const toolCall of step.toolCalls) {
          console.log(`[Using tool: ${toolCall.toolName}]`);
          }
          if (step.toolCalls.length > 0) {
            console.log(""); // Add space after tool calls
          }
        },
      });

      for await (const chunk of stream.textStream) {
        process.stdout.write(chunk);
      }

      console.log("\n\n---\n");

      // Get final result for message history
      const response = await stream.response;
      if (response?.messages?.length) {
        messages.push(...response.messages);
      }
    } catch (error) {
      console.error("\nAn error occurred while talking to the agent:");
      console.error(error);
      console.log(
        "\nYou can try again or restart the app if it keeps happening.\n",
      );
    } finally {
      rl.prompt();
    }
  });

  rl.on("close", async () => {
    await mcpClient.close();
    console.log("\n👋 Session ended.");
    process.exit(0);
  });
}

main().catch((err) => {
  console.error("Fatal error:", err);
  process.exit(1);
});
```

## Complete Code

```typescript
import "dotenv/config";
import { openai } from "@ai-sdk/openai";
import { Composio } from "@composio/core";
import * as readline from "readline";
import { streamText, type ModelMessage, stepCountIs } from "ai";
import { createMCPClient } from "@ai-sdk/mcp";

const composioAPIKey = process.env.COMPOSIO_API_KEY;
const composioUserID = process.env.COMPOSIO_USER_ID;

if (!process.env.OPENAI_API_KEY) throw new Error("OPENAI_API_KEY is not set");
if (!composioAPIKey) throw new Error("COMPOSIO_API_KEY is not set");
if (!composioUserID) throw new Error("COMPOSIO_USER_ID is not set");

const composio = new Composio({
  apiKey: composioAPIKey,
});

async function main() {
  // Create a tool router session for the user
  const session = await composio.create(composioUserID!, {
    toolkits: ["hashnode"],
  });

  const mcpUrl = session.mcp.url;

  const mcpClient = await createMCPClient({
    transport: {
      type: "http",
      url: mcpUrl,
      headers: session.mcp.headers, // Authentication headers for the Composio MCP server
    },
  });

  const tools = await mcpClient.tools();

  let messages: ModelMessage[] = [];

  console.log("Chat started! Type 'exit' or 'quit' to end the conversation.\n");
  console.log(
    "Ask any questions related to hashnode, like summarize my last 5 emails, send an email, etc... :)))\n",
  );

  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    prompt: "> ",
  });

  rl.prompt();

  rl.on("line", async (userInput: string) => {
    const trimmedInput = userInput.trim();

    if (["exit", "quit", "bye"].includes(trimmedInput.toLowerCase())) {
      console.log("\nGoodbye!");
      rl.close();
      process.exit(0);
    }

    if (!trimmedInput) {
      rl.prompt();
      return;
    }

    messages.push({ role: "user", content: trimmedInput });
    console.log("\nAgent is thinking...\n");

    try {
      const stream = streamText({
        model: openai("gpt-5"),
        messages,
        tools,
        toolChoice: "auto",
        stopWhen: stepCountIs(10),
        onStepFinish: (step) => {
          for (const toolCall of step.toolCalls) {
            console.log(`[Using tool: ${toolCall.toolName}]`);
          }
          if (step.toolCalls.length > 0) {
            console.log(""); // Add space after tool calls
          }
        },
      });

      for await (const chunk of stream.textStream) {
        process.stdout.write(chunk);
      }

      console.log("\n\n---\n");

      // Get final result for message history
      const response = await stream.response;
      if (response?.messages?.length) {
        messages.push(...response.messages);
      }
    } catch (error) {
      console.error("\nAn error occurred while talking to the agent:");
      console.error(error);
      console.log(
        "\nYou can try again or restart the app if it keeps happening.\n",
      );
    } finally {
      rl.prompt();
    }
  });

  rl.on("close", async () => {
    await mcpClient.close();
    console.log("\n👋 Session ended.");
    process.exit(0);
  });
}

main().catch((err) => {
  console.error("Fatal error:", err);
  process.exit(1);
});
```

## Conclusion

You've successfully built a Hashnode agent using the Vercel AI SDK with streaming capabilities! This implementation provides a powerful foundation for building AI applications with natural language interfaces and real-time feedback.
Key features of this implementation:
- Real-time streaming responses for a better user experience with typewriter effect
- Live tool execution feedback showing which tools are being used as the agent works
- Dynamic tool loading through Composio's Tool Router with secure authentication
- Multi-step tool execution with configurable step limits (up to 10 steps)
- Comprehensive error handling for robust agent execution
- Conversation history maintenance for context-aware responses
You can extend this further by adding custom error handling, implementing specific business logic, or integrating additional Composio toolkits to create multi-app workflows.

## How to build Hashnode MCP Agent with another framework

- [OpenAI Agents SDK](https://composio.dev/toolkits/hashnode/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/hashnode/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/hashnode/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/hashnode/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/hashnode/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/hashnode/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/hashnode/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/hashnode/framework/cli)
- [Google ADK](https://composio.dev/toolkits/hashnode/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/hashnode/framework/langchain)
- [Mastra AI](https://composio.dev/toolkits/hashnode/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/hashnode/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/hashnode/framework/crew-ai)

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- [Codeinterpreter](https://composio.dev/toolkits/codeinterpreter) - Codeinterpreter is a Python-based coding environment with built-in data analysis and visualization. It lets you instantly run scripts, plot results, and prototype solutions inside supported platforms.
- [GitHub](https://composio.dev/toolkits/github) - GitHub is a code hosting platform for version control and collaborative software development. It streamlines project management, code review, and team workflows in one place.
- [Ably](https://composio.dev/toolkits/ably) - Ably is a real-time messaging platform for live chat and data sync in modern apps. It offers global scale and rock-solid reliability for seamless, instant experiences.
- [Abuselpdb](https://composio.dev/toolkits/abuselpdb) - Abuselpdb is a central database for reporting and checking IPs linked to malicious online activity. Use it to quickly identify and report suspicious or abusive IP addresses.
- [Alchemy](https://composio.dev/toolkits/alchemy) - Alchemy is a blockchain development platform offering APIs and tools for Ethereum apps. It simplifies building and scaling Web3 projects with robust infrastructure.
- [Algolia](https://composio.dev/toolkits/algolia) - Algolia is a hosted search API that powers lightning-fast, relevant search experiences for web and mobile apps. It helps developers deliver instant, typo-tolerant, and scalable search without complex infrastructure.
- [Anchor browser](https://composio.dev/toolkits/anchor_browser) - Anchor browser is a developer platform for AI-powered web automation. It transforms complex browser actions into easy API endpoints for streamlined web interaction.
- [Apiflash](https://composio.dev/toolkits/apiflash) - Apiflash is a website screenshot API for programmatically capturing web pages. It delivers high-quality screenshots on demand for automation, monitoring, or reporting.
- [Apiverve](https://composio.dev/toolkits/apiverve) - Apiverve delivers a suite of powerful APIs that simplify integration for developers. It's designed for reliability and scalability so you can build faster, smarter applications without the integration headache.
- [Appcircle](https://composio.dev/toolkits/appcircle) - Appcircle is an enterprise-grade mobile CI/CD platform for building, testing, and publishing mobile apps. It streamlines mobile DevOps so teams ship faster and with more confidence.
- [Appdrag](https://composio.dev/toolkits/appdrag) - Appdrag is a cloud platform for building websites, APIs, and databases with drag-and-drop tools and code editing. It accelerates development and iteration by combining hosting, database management, and low-code features in one place.
- [Appveyor](https://composio.dev/toolkits/appveyor) - AppVeyor is a cloud-based continuous integration service for building, testing, and deploying applications. It helps developers automate and streamline their software delivery pipelines.
- [Backendless](https://composio.dev/toolkits/backendless) - Backendless is a backend-as-a-service platform for mobile and web apps, offering database, file storage, user authentication, and APIs. It helps developers ship scalable applications faster without managing server infrastructure.
- [Baserow](https://composio.dev/toolkits/baserow) - Baserow is an open-source no-code database platform for building collaborative data apps. It makes it easy for teams to organize data and automate workflows without writing code.
- [Bench](https://composio.dev/toolkits/bench) - Bench is a benchmarking tool for automated performance measurement and analysis. It helps you quickly evaluate, compare, and track your systems or workflows.
- [Better stack](https://composio.dev/toolkits/better_stack) - Better Stack is a monitoring, logging, and incident management solution for apps and services. It helps teams ensure application reliability and performance with real-time insights.
- [Bitbucket](https://composio.dev/toolkits/bitbucket) - Bitbucket is a Git-based code hosting and collaboration platform for teams. It enables secure repository management and streamlined code reviews.
- [Blazemeter](https://composio.dev/toolkits/blazemeter) - Blazemeter is a continuous testing platform for web and mobile app performance. It empowers teams to automate and analyze large-scale tests with ease.
- [Blocknative](https://composio.dev/toolkits/blocknative) - Blocknative delivers real-time mempool monitoring and transaction management for public blockchains. Instantly track pending transactions and optimize blockchain interactions with live data.

## Frequently Asked Questions

### What are the differences in Tool Router MCP and Hashnode MCP?

With a standalone Hashnode MCP server, the agents and LLMs can only access a fixed set of Hashnode tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Hashnode and many other apps based on the task at hand, all through a single MCP endpoint.

### Can I use Tool Router MCP with Vercel AI SDK v6?

Yes, you can. Vercel AI SDK v6 fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Hashnode tools.

### Can I manage the permissions and scopes for Hashnode while using Tool Router?

Yes, absolutely. You can configure which Hashnode scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

### How safe is my data with Composio Tool Router?

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Hashnode data and credentials are handled as safely as possible.

---
[See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)