HackMD MCP server for AI agents and assistants

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with HackMD MCP or direct API to create notes, update Markdown docs, organize team workspaces, and share collaborative notes through natural language.

HackMD logoHackMD
Api Key

HackMD is a collaborative Markdown workspace for personal and team notes. Use it to write, organize, and share living docs without leaving Markdown.

8 Tools

Try HackMD now

Type what you want done — sign in and watch it run live in the Tool Router playground.

TOOL ROUTER PLAYGROUND
HackMD
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TOOLS

Supported Tools

Every HackMD action and event your agent gets out of the box.

Create Note

Create a Markdown note in the personal workspace or a specified team workspace.

Get Account

Return the HackMD profile for the connected token and the teams visible to it.

Get Note

Get a note by ID, including its Markdown content.

List Folders

List all folders in the personal workspace, or in one team workspace when team_path is supplied.

List Notes

List all notes in the personal workspace, or in one team workspace when team_path is supplied.

List Trash

List soft-deleted notes in the personal workspace.

Move Note to Trash

Soft-delete a note by moving it to trash in the personal workspace or an explicitly selected team workspace.

Restore Notes

Restore one or more personal notes from HackMD trash.

SETUP GUIDE

Connect HackMD MCP Tool with your Agent

1

Install Composio

typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openai
Install the Composio SDK and your agent framework
2

Create a session with MCP enabled

typescript
import { Composio } from "@composio/core";

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["hackmd"],
  mcp: true,
});
Create a session scoped to HackMD and read its MCP URL and headers
3

Connect your agent to the MCP server

typescript
import { createMCPClient } from "@ai-sdk/mcp";
import { openai } from "@ai-sdk/openai";
import { generateText, stepCountIs } from "ai";

const client = await createMCPClient({
  transport: { type: "http", url: mcp.url, headers: mcp.headers },
});

const { text } = await generateText({
  model: openai("gpt-5.6-sol"),
  tools: await client.tools(),
  prompt: "Create a HackMD note titled Project Kickoff with agenda and action items",
  stopWhen: stepCountIs(10),
});

console.log(text);
await client.close();
Pass the session's MCP URL and headers to your agent and run a HackMD request
SETUP GUIDE

Connect HackMD API Tool with your Agent

1

Install Composio

typescript
npm install @composio/core @composio/openai openai
Install the Composio SDK, the OpenAI provider, and the OpenAI SDK
2

Create a Composio session

typescript
import OpenAI from "openai";
import { Composio } from "@composio/core";
import { OpenAIResponsesProvider } from "@composio/openai";

const composio = new Composio({ provider: new OpenAIResponsesProvider() });
const client = new OpenAI();

const session = await composio.create("your-user-id", { toolkits: ["hackmd"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to HackMD
3

Run HackMD tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Create a HackMD note titled Project Kickoff with agenda and action items" }],
});

while (response.output.some((o) => o.type === "function_call")) {
  const outputs = await composio.provider.handleToolCalls(session, response.output);
  response = await client.responses.create({
    model: "gpt-5.6-sol",
    tools,
    previous_response_id: response.id,
    input: outputs,
  });
}

console.log(response.output_text);
Send a request, execute the HackMD tool calls through the session, and print the final answer

Why Use Composio?

AI Native HackMD Integration

  • Supports both HackMD MCP and direct API based integrations
  • Structured, LLM-friendly schemas so agents can work with Markdown notes more reliably
  • Rich coverage for creating, reading, updating, and sharing HackMD notes

Managed Auth

  • Secure API key handling, so you don't need to hard-code HackMD credentials
  • Central place to manage, scope, and revoke HackMD access
  • Per user and per environment credentials for safer team and production setups

Agent Optimized Design

  • Tools are tuned using real error and success rates to improve reliability over time
  • Clear tool schemas help agents understand when to create, edit, or fetch HackMD notes
  • Comprehensive execution logs so you always know what ran, when, and on whose behalf

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access HackMD
  • Scoped, least privilege access to HackMD notes and workspaces
  • Full audit trail of agent actions to support review and compliance
FAQ

Frequently asked questions

Yes, HackMD requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.

Yes. Composio is SOC 2 Type II compliant and is built to keep your HackMD connection and credentials secure. OAuth tokens and API keys are encrypted, and sensitive customer data is protected at rest and in transit.

Composio also undergoes independent security testing and continuously monitors its systems for security threats. You can review the latest reports and policies in the Composio Trust Center.

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

Create the key in your HackMD account settings, then paste it once on Composio's connection page. Composio stores it encrypted and uses it only for the HackMD actions your agent runs. Nobody else in your workspace can read it, and you can revoke it inside HackMD at any time.

When you connect a HackMD account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in HackMD as done by you. Keep an approval step in your prompt for actions with side effects, such as sending or deleting, and have the agent draft first.

Whatever the credentials you connect allow inside HackMD. If HackMD lets you scope a key to specific permissions, create a scoped one so the agent can only do what you intend. You can revoke the key inside HackMD at any time.

Yes. Composio supports multiple connected accounts for the same app, and that works in Claude, ChatGPT, or any other assistant you connect through Composio. Give each HackMD connection a name such as work or personal, and the assistant uses the one you mention in the request. Each account keeps its own credentials and nothing is merged.

The connection stops working the moment HackMD rejects the old key. Create a new key in HackMD and reconnect the account from the Composio dashboard or by asking your agent to reconnect HackMD. Nothing else changes.

Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal HackMD use. Paid plans add higher limits and team features. Your HackMD plan and its API limits still apply as usual.

Built-in connectors usually give one AI access to a limited set of apps. Many people use Composio because it lets their AI connect to more apps than it normally supports, or connect to multiple accounts for the same app (e.g. connect Claude to multiple HackMD accounts).

With Composio, you connect HackMD once and then use it across different AI assistants without setting it up separately in each one. Connect your apps to Composio once, then connect Composio to whichever AI you use, whether that's Claude, ChatGPT, Hermes, or your own custom assistant.

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