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Add the Firmable MCP server as a custom connector in Claude so it can query Firmable data inside your conversations.
Team and Enterprise plans: an owner adds the connector under Organization settings → Connectors → Add, then hovers Custom and selects Web. Team members then connect to it from Customize → Connectors by clicking Connect on the connector labelled Custom.
You’ll need the MCP URL and Client ID — see URL & Client ID.

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Claude (Web)

1

Open Customize

In Claude, open the sidebar and click Customize.
Claude (Web) sidebar with the Customize item highlighted
2

Add a custom connector

Go to the Connectors tab, click the +, and choose Add custom connector.
Connectors tab with the plus menu open showing Add custom connector
3

Enter the Firmable MCP details

  • Name: anything you like — this guide uses Firmable
  • Remote MCP server URL: the MCP URL
  • Expand Advanced settings and enter your OAuth Client ID (your Firmable Client ID).
Find the MCP URL and Client ID on URL & Client ID. Then click Add.
Add custom connector dialog with the Firmable name, MCP server URL, and OAuth Client ID filled in
4

Connect

Firmable now appears under Not connected. Select it and click Connect.
Firmable custom connector listed under Not connected with a Connect button
5

Authorize

Sign in to Firmable and click Allow to authorize the connection.
Firmable OAuth screen requesting access, with an Allow button
6

Review tool permissions

Once connected, choose when Claude is allowed to use each Firmable tool, then start using it in a chat.
Connected Firmable connector showing the list of tools and their permission settings

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Claude (Desktop)

Custom connectors are brokered through your Claude account. If you already added Firmable on the web, it appears in Claude (Desktop) automatically — just open Customize → Connectors and click Connect (jump to step 4). If you haven’t, add it from scratch below.
1

Open Customize

In Claude (Desktop), open the sidebar and click Customize.
Claude (Desktop) sidebar with the Customize item highlighted
2

Add a custom connector

Go to the Connectors tab, click the +, and choose Add custom connector.
Claude (Desktop) Connectors tab with the plus menu open showing Add custom connector
3

Enter the Firmable MCP details

  • Name: anything you like — this guide uses Firmable
  • Remote MCP server URL: the MCP URL
  • Expand Advanced settings and enter your OAuth Client ID.
Find the MCP URL and Client ID on URL & Client ID. Then click Add.
Add custom connector dialog in Claude (Desktop) with the Firmable details filled in
4

Connect

Firmable appears under Not connected. Select it and click Connect.
Firmable custom connector listed under Not connected in Claude (Desktop) with a Connect button
5

Authorize

Claude opens your browser to authorize. Sign in to Firmable and click Allow.
Firmable OAuth screen requesting access, with an Allow button
6

Review tool permissions

Back in Claude (Desktop), Firmable shows as Connected. Choose when Claude is allowed to use each tool, then start using it in a chat.
Connected Firmable connector in Claude (Desktop) showing the list of tools and their permission settings