--- title: Connect Ressio to ChatGPT (MCP Connection) description: Learn how to connect Ressio to ChatGPT using an MCP server app. This guide walks builders through enabling developer mode, creating the Ressio app with the correct HTTPS URL, approving access, testing the connection, and reviewing read/write actions. --- [Skip to content](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#main-content) English Show submenu for translations [Contact us](https://help.ressiosoftware.com/kb-tickets/new?hsLang=en) ![Untitled design (22)](https://43531900.fs1.hubspotusercontent-na1.net/hub/43531900/hubfs/Untitled%20design%20(22).png?width=75&height=75&name=Untitled%20design%20(22).png) Open main navigation Close main navigation - English Show submenu for translations - [Contact us](https://help.ressiosoftware.com/kb-tickets/new) - [Go to ressiosoftware.com](https://www.ressiosoftware.com/) [Go to ressiosoftware.com](https://www.ressiosoftware.com/) Hello. 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[AI](https://help.ressiosoftware.com/integrations?hsLang=en#ai) # Connect Ressio to ChatGPT (MCP Connection) ## Step-by-step: Turn on developer mode, create a custom MCP app in ChatGPT, authorize Ressio access, and verify the connection. **Overview** Connecting Ressio to ChatGPT lets you use ChatGPT to: - **Read data from Ressio** (like projects, start dates, IDs, schedules, budgets, estimates) - **Optionally take actions in Ressio** (write actions), depending on what permissions/actions are enabled This setup uses an **MCP server connection** created through ChatGPT’s Apps settings. --- #### Table of Contents - [Before you start](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#before) - [Step 1: Open ChatGPT Settings](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#step1) - [Step 2: Go to Apps (and enable Developer Mode if needed)](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#step2) - [Step 3: Create a new app for Ressio](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#step3) - [Step 4: Enter the MCP server URL (must be exact)](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#step4) - [Step 5: Authorize ChatGPT to access Ressio](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#step5) - S[tep 6: Confirm the connection is successful](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#step6) - [Step 7: Review available actions (Read & Write)](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#step7) - [Troubleshooting](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#troubleshooting) --- #### Before you start 1. A ChatGPT account you can log into. 2. A Ressio account you can log into. 3. Access to ChatGPT Settings. 4. Developer Mode enabled in ChatGPT (required to create the app if "Create app" isn't visible). [\[back-to-top\]](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#back-to-top) --- #### Step 1: Open ChatGPT Settings 1. In ChatGPT, go to the **bottom-left corner**. 2. Click your **name** (or profile menu). 3. Click Settings. What you should see: A settings panel with multiple sections/options.  ![download (37)](https://43531900.fs1.hubspotusercontent-na1.net/hub/43531900/hubfs/download%20(37).png?width=670&height=377&name=download%20(37).png) --- #### Step 2: Go to Apps (and enable Developer Mode if needed) 1. In Settings, click **Apps**. ![download (39)](https://43531900.fs1.hubspotusercontent-na1.net/hub/43531900/hubfs/download%20(39).png?width=368&height=286&name=download%20(39).png) **If you do NOT see "Create app"** 1. Go into **Advanced settings**. 2. Turn on **Developer mode**. 3. **Return to** Settings -\> Apps. **![download (40)](https://43531900.fs1.hubspotusercontent-na1.net/hub/43531900/hubfs/download%20(40).png?width=386&height=292&name=download%20(40).png)** **Why this matters:** Ressio may appear in the App Library in the future, but in the current process you create the connection via **Developer mode** using a specific URL. [\[back-to-top\]](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#back-to-top) --- #### Step 3: Create a new app for Ressio 1. In **Settings -\> Apps**, click **Create app**. 2. Set the app name (example: **Ressio**). 3. Add an optional description example:  - "**Ressio Prod - Connect to Ressio account"** **![download (41)](https://43531900.fs1.hubspotusercontent-na1.net/hub/43531900/hubfs/download%20(41).png?width=358&height=346&name=download%20(41).png)** **![download (43)](https://43531900.fs1.hubspotusercontent-na1.net/hub/43531900/hubfs/download%20(43).png?width=401&height=320&name=download%20(43).png)** [\[back-to-top\]](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#back-to-top) --- #### Step 4: Enter the MCP server URL (must be exact) When prompted for the server URL, use the exact link shown in your process:  - `https://www.ressio.app/mcp` Important notes: - The **HTTPS** part is critical. - If you enter a variation of the URL, ChatGPT may tell you it’s incorrect and the connection will fail. - This URL should also be included in your Help Center article for copy/paste. 1. After entering the URL, click: - **I understand and want to continue** 2. Click **Create**. **What you should see:** The app will “run” briefly while it sets up the connection. [\[back-to-top\]](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#back-to-top) --- ##### Step 5: Authorize ChatGPT to access Ressio 1. You'll be prompted to sign in / authorize (example shown: Ressio Prod). 2. Click Allow. **![download (42)](https://43531900.fs1.hubspotusercontent-na1.net/hub/43531900/hubfs/download%20(42).png?width=499&height=370&name=download%20(42).png)** **What to look for (verification step):** - You should see the **Ressio logo** near the top of the authorization page, confirming it's the correct Ressio server. ✅ The authorization pager may open quickly or in a separate view. You may be asked to enter Ressio credentials, or you may not, either is normal.  [\[back-to-top\]](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#back-to-top) --- #### Step 6: Confirm the connection is successful After authorization, you should be returned to ChatGPT. Example test prompt: - "Show me a list of my warranty projects". **Why “warranty projects” is a good test:**  It typically returns a clear, structured list. In the walkthrough, it returned 7 projects with fields like: - Warranty stage - Start date - Project ID - Project name If the list matches what you expect in Ressio, the connection is working. ![28f3ca7f-7322-47c0-b8d4-eb2142f7ab50](https://43531900.fs1.hubspotusercontent-na1.net/hub/43531900/hubfs/28f3ca7f-7322-47c0-b8d4-eb2142f7ab50.gif?width=670&height=377&name=28f3ca7f-7322-47c0-b8d4-eb2142f7ab50.gif) [\[back-to-top\]](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#back-to-top) --- #### Step 7: Review available actions (Read & Write) If you want to see what ChatGPT can do through the Ressio app: 1. Go back to **Settings -\> Apps**. 2. Find your app (example: **Ressio Prod**) ![download (44)](https://43531900.fs1.hubspotusercontent-na1.net/hub/43531900/hubfs/download%20(44).png?width=398&height=330&name=download%20(44).png) 3. Click into it 4. Look for areas like:  - **Ask permissions** - **App actions** **What you'll see (after it refreshes):**  - A list of **read** actions (pulling data from Ressio) - A list of **write** actions (taking actions in Ressio) ![b9c461f0-fc1e-44c3-9b62-1aaec87aef47](https://43531900.fs1.hubspotusercontent-na1.net/hub/43531900/hubfs/b9c461f0-fc1e-44c3-9b62-1aaec87aef47.gif?width=670&height=377&name=b9c461f0-fc1e-44c3-9b62-1aaec87aef47.gif) ⌛ It may take a moment to refresh before all actions appear.  [\[back-to-top\]](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#back-to-top) --- #### Troubleshooting **"Create app" isn't showing** - Go to Advanced settings - Enable Developer mode - Returen to Settings -\> Apps **URL isn't accepted / connection fails** - Confirm you used the exact URL: - `https://www.ressio.app/mcp/` - Confirm you included **https://** (NOT http://) **Actions aren't showing yet** - Wait a moment and reopen the app details, actions can take time to refresh. 🎓 To learn more about MCP, read [What is an MCP Connector?](https://help.ressiosoftware.com/what-is-an-mcp-connector?hsLang=en) 🎓 To learn how to connect Claude to Ressio, read [Connect Ressio to ChatGPT (MCP Connector)](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection?hsLang=en). [\[back-to-top\]](https://help.ressiosoftware.com/connect-ressio-to-chatgpt-mcp-connection#back-to-top) --- #### Need help? If you get stuck or the connection doesn’t complete, contact the Ressio support team. *\* AI-generated content may contain errors. 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