Connect ChatGPT

This walks you through connecting ChatGPT to Assemblified as a custom connector, so you can ask ChatGPT about your bills of materials, sub-assemblies, and raw materials. This walkthrough shows the default read-only flow — the access level is chosen when you generate the connection code (see Connect claude.ai or ChatGPT).

Before you start

• An active Assemblified subscription (LLM / API Access is in open beta).
• A ChatGPT account that lets you add a custom connector (the Apps / connectors area with developer mode).

Step 1 — Generate your connection code in Assemblified

In Assemblified, generate the one-time code you’ll paste back into ChatGPT at the end.

1. Open Settings → LLM / API Access.
2. In the Connect a web chat (claude.ai / ChatGPT) card, click Connect ChatGPT / Claude.
3. Copy the connector URL (it ends in /mcp-agent) and the one-time connection code. Both are valid for 10 minutes.

Copy the /mcp-agent URL and the one-time code from Settings → LLM / API Access.

Tip

Keep this Assemblified tab open — you’ll paste the code in Step 5, and the code expires after 10 minutes.

Step 2 — Enable developer mode in ChatGPT

Custom connectors live behind ChatGPT’s developer mode.

1. In ChatGPT, open Settings → Apps.
2. Open the Advanced section.
3. Turn Developer mode on.

Settings → Apps → Advanced → Developer mode.

Caution

ChatGPT flags developer mode as elevated risk because it lets you add unverified connectors. Only add connectors you trust — like your own Assemblified store.

Step 3 — Create the Assemblified app

1. Still under Settings → Apps, click Create app.
2. Fill in the form:
   • Name: Assemblified
   • Description (optional): Bill of materials
   • Connection: choose Server URL and paste the /mcp-agent URL from Step 1 — https://assemblified.com/mcp-agent.
   • Authentication: OAuth.
3. Tick I understand and want to continue, then click Create.

Create the app pointing at the /mcp-agent URL with OAuth authentication.

Step 4 — Sign in with Assemblified

After creating the app, ChatGPT prompts you to authorize it.

1. On the Add Assemblified to ChatGPT screen, click Sign in.

Click Sign in to start authorization.

Step 5 — Approve read-only access

A browser tab opens on Assemblified’s Connect to Assemblified screen.

1. Paste the connection code you copied in Step 1.
2. Click Approve read-only access.

Paste the one-time code, then approve read-only access.

Note

Generated a read & write code instead? The same screen shows that scope and the button reads Approve read & write access — what write access covers is described in Operating BOMs & sub-assemblies and Operating raw materials & stock.

Once approved, you’re back in ChatGPT and connected. The connector also shows up in the Connected apps table on the LLM / API Access page in Assemblified.

Try it out

Ask ChatGPT something in plain language, such as “How many units of my Gift Box Deluxe can I build right now?” It reads the answer live from your store.

Code expired?

The connection code is single-use and lasts 10 minutes. If ChatGPT says it’s invalid, generate a fresh one — see If the code expires.

See also

• Connect claude.ai or ChatGPT — the shared overview of this flow.
• Connect claude.ai — the same flow for claude.ai.
• Managing access & security — revoking connected apps.