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How to connect OPNForm to Claude

Connect Claude Web, Desktop and Cowork to OPNForm MCP. List recent submissions for contact form, create a new 'feedback' form, and more using natural language, with authentication handled for you.

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OPNForm is an open-source form builder for creating and managing web forms. Use it to collect submissions, organize workspaces, and connect integrations easily.

28 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your OPNForm account to Claude via Composio Connect, enabling it to list recent submissions for Contact form, create a new 'Feedback' form, export submissions from 'Signup' form, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

Also integrate OPNForm with

ChatGPTHermesAtomic Agent

Connecting OPNForm to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your OPNForm account

Back in Claude, ask it to connect to OPNForm or give it any OPNForm-related task.

For example, ask Claude to:

  • "List recent submissions for Contact form"
  • "Create a new 'Feedback' form"
  • "Export submissions from 'Signup' form"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your OPNForm account is ready to use.

What is the OPNForm Claude Connector, and what's possible with it?

The OPNForm MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your OPNForm account. It provides structured and secure access so your agent can perform OPNForm operations on your behalf.

Troubleshooting

1. Why does Claude not use the Composio connector for OPNForm?

The connector can show as connected, but Claude must use it in each OPNForm conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to OPNForm again.

2. Why does Claude show an MCP server error before OPNForm connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for OPNForm.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect OPNForm.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the OPNForm authorization link not work?

The Composio connector is one server. Your OPNForm account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the OPNForm connection.
  • Composio creates a fresh OPNForm authorization link.
  • Open that link in your browser and finish the OPNForm sign-in.

4. Why do OPNForm actions fail after they worked before?

The OPNForm connection can expire or lose permission.

  • Ask Claude to inspect the OPNForm connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the OPNForm account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in OPNForm.
  • If the action still fails with a permission error, check that the connected account has that permission in OPNForm itself.

5. How do I switch to a different OPNForm account?

Claude can manage the OPNForm connection for you.

  • Ask Claude to disconnect or delete the current OPNForm account.
  • Ask Claude to connect OPNForm again.
  • Open the new Composio authorization link for OPNForm.
  • Sign in with the other OPNForm account in the browser.
  • After the account connects, ask Claude to retry the OPNForm task.

6. Why is my OPNForm connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your OPNForm connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If OPNForm tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect OPNForm.
TOOLS

Supported Tools

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

Cancel Workspace Invite

Cancel and remove a pending workspace invitation before it is accepted.

Create Form

Create an OpnForm form in a workspace from a title, ordered field or layout blocks, and optional validated form settings.

Create Form Integration

Create a generic webhook or Make integration for an OpnForm form.

Create Submission

Submit answers to a public OpnForm form.

Create Workspace

Create an OpnForm workspace.

Delete Form

Permanently delete a form and all of its submissions by numeric ID.

Delete Form Integration

Permanently remove a webhook integration from a form and stop its future deliveries.

Delete Submission

Permanently delete one submission from a form using both numeric IDs.

Delete Submissions

Permanently delete 1-25 submissions from one form through sequential provider requests.

Delete Workspace

Permanently delete a workspace and its contained resources.

Get Current User

Return the name and email of the OpnForm user associated with the connected personal access token.

Get Form

Retrieve a form by its public slug, including its complete field and layout definitions.

Invite Workspace Member

Add an existing OpnForm user to a workspace or email an invitation to a new user.

Invite Workspace Members

Add or invite 1-10 users to one workspace through sequential provider requests.

List Form Integrations

List webhook and Make integrations configured for a form, including IDs, status, and endpoint configuration.

List Forms

Return one page of lightweight form summaries from a workspace.

List Integration Events

Inspect past delivery attempts for one form integration, including the attempt date, Success or Error status, and a downstream HTTP status when available.

List Submissions

Return one searchable page of completed, partial, or all submissions for a form.

List Workspace Invites

List pending and accepted invitations for a workspace where the connected user is an administrator.

List Workspace Members

List members of a workspace with their user IDs, names, emails, and workspace roles.

List Workspaces

List workspaces accessible to the connected user, including IDs, plan tier, role flags, usage counts, enabled features, and plan limits.

Remove Workspace Member

Remove a specified member from a workspace without deleting the member's OpnForm account.

Resend Workspace Invite

Send another invitation email for an existing pending workspace invite.

Update Form

Replace or change an existing form's field definitions and settings using its numeric form ID.

Update Form Integration

Change a generic webhook integration's delivery URL or active status.

Update Form Submission Retention

Change or disable a form's automatic submission-retention policy.

Update Workspace

Change a workspace's name and icon without affecting its membership or forms.

Update Workspace Member Role

Change an existing workspace member's role to admin, user, or readonly.

FRAMEWORKS

How to build OPNForm MCP Agent with another framework

ChatGPT logo

ChatGPT

Use OPNForm MCP with ChatGPT

Hermes logo

Hermes

Use OPNForm MCP with Hermes

Atomic Agent logo

Atomic Agent

Use OPNForm MCP with Atomic Agent

FAQ

Frequently asked questions

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

Yes, you can. Claude Cowork 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 OPNForm tools.

Yes, absolutely. You can configure which OPNForm 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.

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 OPNForm data and credentials are handled as safely as possible.

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