Writer MCP server for AI agents and assistants

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Writer MCP or direct API to generate enterprise content, summarize documents, apply AI guardrails, and automate content workflows through natural language.

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Api Key

Writer is an enterprise-grade generative AI platform for building and deploying custom LLM-powered applications. Get reliable content generation, advanced RAG, and built-in AI guardrails for secure, compliant workflows.

23 Tools

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

TOOL ROUTER PLAYGROUND
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TOOLS

Supported Tools

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

Add File to Knowledge Graph

Tool to add a file to a knowledge graph for indexing and retrieval.

Analyze Images

Tool to analyze images using Writer's vision capabilities.

Ask Question to Knowledge Graph

Tool to send a question to the knowledge graph and retrieve the answer.

Chat Completion

Tool to generate chat-based completions.

Create Knowledge Graph

Tool to create a new knowledge graph.

Delete File

Tool to delete a file by its ID.

Delete Graph

Tool to delete a knowledge graph by its ID.

Detect AI Content

Tool to detect whether content was generated by AI.

Download File

Tool to download the binary content of a file.

Get File

Tool to retrieve detailed information about a specific file by its ID.

List Applications

Tool to list all no-code agent applications.

List Files

Tool to list all uploaded files.

List Knowledge Graphs

Tool to retrieve a list of knowledge graphs.

List Models

Tool to list all available language models.

Medical Text Comprehension

Tool to extract medical entities and concepts from unstructured clinical text.

Parse PDF

Tool to parse and extract text content from a previously uploaded PDF file.

Remove File From Graph

Tool to remove a file from a Knowledge Graph.

Retrieve Knowledge Graph

Tool to retrieve a knowledge graph by its ID.

Text Generation

Tool to generate text based on a given prompt.

Translate Text

Tool to translate text from one language to another with support for formality, length control, and profanity masking.

Update Knowledge Graph

Tool to update an existing knowledge graph.

Upload File

Tool to upload a file to Writer.

Web Search

Tool to perform a web search.

SETUP GUIDE

Connect Writer 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: ["writer"],
  mcp: true,
});
Create a session scoped to Writer 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: "Generate a summary from this uploaded whitepaper",
  stopWhen: stepCountIs(10),
});

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

Connect Writer 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: ["writer"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to Writer
3

Run Writer tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Generate a summary from this uploaded whitepaper" }],
});

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 Writer tool calls through the session, and print the final answer

Why Use Composio?

AI Native Writer Integration

  • Supports both Writer MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable tool execution
  • Rich coverage for generating, summarizing, and moderating your enterprise content

Managed Auth

  • Built-in API key storage and rotation—no manual credential juggling
  • Central place to manage, scope, and revoke Writer access
  • Per user and per environment credentials instead of hard-coded keys

Agent Optimized Design

  • Tools are tuned using real error and success rates to improve reliability over time
  • 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 Writer
  • Scoped, least privilege access to Writer resources
  • Full audit trail of agent actions to support review and compliance

Rolling this out across your team?

Give your team centralized access control across every framework with Composio’s MCP Gateway.

EXPLORE MCP GATEWAY
FAQ

Frequently asked questions

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

When you connect a Writer account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in Writer 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 Writer. If Writer 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 Writer 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 Writer 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 Writer rejects the old key. Create a new key in Writer and reconnect the account from the Composio dashboard or by asking your agent to reconnect Writer. Nothing else changes.

Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal Writer use. Paid plans add higher limits and team features. Your Writer 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 Writer accounts).

With Composio, you connect Writer 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.

Start with Writer.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Writer tool your agent needs.Free to start.

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