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Add Allo as a custom connector and use it inside any Claude.ai conversation.

How it works

Think of an MCP as a security badge you hand to Claude. Claude opens the rooms you authorized (calls, contacts, SMS, analytics) and stays out of the rest. You can revoke the badge any time from your Claude or Allo settings. The setup takes around 60 seconds. You paste the values below, then sign in to Allo.

How to connect

1

Open Claude → Connectors

Go to claude.ai/customize/connectors, click +, and pick Add custom connector. You’re telling Claude you want to introduce it to a new tool.
Add a custom connector in Claude
2

Add Allo

In the modal, paste the two values below, then click Continue. Copy them as they are. You don’t need to understand what they mean.
  • Name: Allo
  • MCP server URL: https://mcp.withallo.com/mcp
3

Add the Client ID

On the next screen, keep Sign in now under Authentication. Under OAuth client, Claude selects Use Claude’s published identity. Select Use your own OAuth client. Paste the Client ID below, and leave OAuth client secret (optional) empty.
  • Client ID: b82803e6-31d4-47e0-9d7e-db9826ee451b
Claude OAuth client settings with Use your own OAuth client selected and the Allo Client ID filled in
Claude’s layout varies by workspace. If the name, the URL, and Advanced settings are on one screen, paste the Client ID under Advanced settings.
Here is that older screen.
Older single-screen Claude connector form, with Advanced settings open and the Allo Client ID filled in
4

Sign in and authorize

Click Add, then Connect. Sign in to Allo, review the permissions, and Authorize. Allo never sees your Claude password.
Allo consent screen
5

Try it

Allo is now in your connectors. Open any Claude conversation and pick one of the prompts below to get started.

Try one of these

Copy any prompt below and paste it into Claude. Adjust the names and dates to match your team.

Sales rep

Show me contacts I called more than twice but never closed. Suggest a follow-up message

Manager

Compare my reps' connect rates this week vs last. Who's slipping?

Founder

Pull all calls tagged "enterprise" from the last 30 days. Summarise the top asks

Ops

List contacts who called 3+ times last week with no owner. Tag them "needs follow-up"

What you can do

Browse the full tools list →

16 tools to search calls, send SMS, manage contacts, and pull team analytics. The list includes the required scopes.

Troubleshooting

A few things to check:
  • You must be a workspace admin in Claude to add a Custom Connector.
  • The Client ID must be exactly b82803e6-31d4-47e0-9d7e-db9826ee451b with no extra spaces.
  • The account you’re signing in with on the Allo consent screen must have an active Allo account.
Reload the Claude conversation. Open the connector status panel in Claude and confirm Allo is listed as connected. If it isn’t, remove the connector and add it again following the steps above.
This is a standard MCP guard rail that Claude shows for any third-party connector. It’s not specific to Allo. It’s safe to proceed and authorize Allo.

Using Claude Code instead?

Claude Code + API key

For Claude Code, Claude Desktop, Cursor, or any other MCP client. Cursor can use the Allo plugin, the other clients use an API key.

Using ChatGPT or Grok?

ChatGPT connector

Install the Allo plugin in ChatGPT. You sign in to Allo. A custom MCP server is the alternative.

Grok connector

Install Allo for Grok Bot. You sign in to Allo. A custom connector on grok.com is the alternative.