Sideshow MCP server for AI agents and assistants

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Sideshow MCP or direct API to publish visual posts, share diagrams, render markdown, and distribute code snippets through natural language.

Sideshow MCP logoSideshow MCP
Dcr Oauth

Sideshow MCP is a publishing service for visual surfaces like diagrams, code, markdown, and images. It turns generated artifacts into clean, shareable posts without building a custom renderer.

18 Tools

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TOOL ROUTER PLAYGROUND
Sideshow MCP
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TOOLS

Supported Tools

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

Add surface

Insert one publish_post-shaped surface into a post; before/after accepts an id or 0-based index.

Edit surface

Replace one surface by id/index, or pass content to preserve its kind-specific options.

Get design guide

Fetch HTML fragment, sizing, theme, kit, CDN, and interactivity guidance.

Get post

Get one full post with surface ids/indexes, version, and history; use before targeted edits or after compaction.

List posts

List posts, optionally scoped by session.

List surfaces

Deprecated list_posts alias.

Publish post

Publish ordered surfaces as one post.

Publish snippet

Deprecated HTML-only publish_post sugar.

Publish surface

Deprecated publish_post alias; pass the same surface shape as parts.

Remove surface

Remove one surface by id/index; a post must retain at least one.

Reorder surfaces

Reorder every surface using ids or 0-based indexes; order length must match.

Reply to user

Post a short plain-text reply using postId (surfaceId is deprecated).

Send test post

Publish the idempotent built-in welcome post to test a connection or fresh workspace; returns the existing post if already sent.

Update post

Revise a post in place instead of publishing a duplicate.

Update snippet

Deprecated HTML-only update_post sugar.

Update surface

Deprecated update_post alias; pass replacement surfaces as parts.

Upload asset

Upload base64 bytes and return id and URL.

Wait for feedback

Wait up to 300 seconds for comments not yet delivered on any channel; 0 is a non-blocking check.

SETUP GUIDE

Connect Sideshow 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: ["sideshow_mcp"],
  mcp: true,
});
Create a session scoped to Sideshow MCP 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: "Publish a markdown post titled Q3 launch plan with a Mermaid roadmap diagram and summary bullets",
  stopWhen: stepCountIs(10),
});

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

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

Run Sideshow MCP tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Publish a markdown post titled Q3 launch plan with a Mermaid roadmap diagram and summary bullets" }],
});

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 Sideshow MCP tool calls through the session, and print the final answer

Why Use Composio?

AI Native Sideshow MCP Integration

  • Supports both Sideshow MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable post publishing
  • Rich coverage for publishing diagrams, code blocks, markdown notes, and image-based surfaces

Managed Auth

  • Built-in DCR OAuth handling with secure credential storage
  • Central place to manage, scope, and revoke Sideshow MCP access
  • Per user and per environment credentials instead of hard-coded keys

Agent Optimized Design

  • Tools are tuned for agent workflows, so publishing visual artifacts feels natural
  • Clear tool schemas help agents choose when to publish markdown, diagrams, code, or images
  • Comprehensive execution logs so you always know what was posted, when, and on whose behalf

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can publish with Sideshow MCP
  • Scoped, least privilege access to Sideshow MCP publishing resources
  • Full audit trail of agent-created posts to support review and compliance
FAQ

Frequently asked questions

Yes, Sideshow MCP requires you to configure your own DCR OAuth credentials. Once set up, Composio handles secure credential storage and management 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 Sideshow 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.

When you connect a Sideshow account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in Sideshow 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 Sideshow. If Sideshow 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 Sideshow 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 Sideshow 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.

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

With Composio, you connect Sideshow 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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