Upload to URL MCP server for AI agents and assistants

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Upload to URL MCP or direct API to upload files, publish HTML pages, retrieve file metadata, and delete uploaded file records through natural language.

Upload to URL logoUpload to URL
Api Key

Upload to URL is a file publishing service for hosting files on public CDN URLs and publishing HTML pages. It gives apps and agents a simple way to make files and web content publicly accessible.

5 Tools

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TOOL ROUTER PLAYGROUND
Upload to URL
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TOOLS

Supported Tools

Every Upload to URL action and event your agent gets out of the box.

Delete File

Permanently delete a previously uploaded file from storage and its public CDN location.

Get File Metadata

Retrieve current metadata and the public CDN URL for a file previously uploaded by the connected account.

Get Supported Formats

Return the file extensions Upload to URL accepts or blocks, current plan size limits, and advertised upload security checks.

Publish HTML

Publish raw HTML at a public URL under a chosen page path.

Upload File

Upload one file and return its public CDN URL, file ID, expiration, and remaining monthly credits.

SETUP GUIDE

Connect Upload to URL 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: ["upload_to_url"],
  mcp: true,
});
Create a session scoped to Upload to URL 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 an HTML page that says \"Hello from Composio\" and return the public URL",
  stopWhen: stepCountIs(10),
});

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

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

Run Upload to URL tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Publish an HTML page that says \"Hello from Composio\" and return the public URL" }],
});

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 Upload to URL tool calls through the session, and print the final answer

Why Use Composio?

AI Native Upload to URL Integration

  • Supports both Upload to URL MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable file upload and page publishing flows
  • Rich coverage for uploading files, publishing HTML, retrieving metadata, and deleting upload records

Managed Auth

  • Securely store and use your Upload to URL API key without hard-coding it in agent code
  • Central place to manage, scope, and revoke Upload to URL access
  • Per user and per environment credentials, so staging and production stay cleanly separated

Agent Optimized Design

  • Tools are tuned using real error and success rates to improve upload reliability over time
  • Comprehensive execution logs so you always know what file or page was created, fetched, or deleted
  • Clear tool schemas help agents choose the right Upload to URL action without guesswork

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access Upload to URL
  • Scoped, least privilege access to Upload to URL upload and publishing actions
  • Full audit trail of agent actions to support review, debugging, and compliance
FAQ

Frequently asked questions

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

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

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

With Composio, you connect Upload to URL 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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