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The Addison plugin puts Summation’s AI data analyst directly inside Claude. Setup takes about two minutes and one browser sign-in — no API keys, and no secrets ever pasted into chat. Everything Addison does runs as you, against your Summation workspace.

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Claude Code

Anyone can install the plugin themselves from a Claude Code session — no admin required.
1

Add the Summation marketplace

2

Install the plugin, then restart Claude Code

Restart Claude Code so the plugin loads.
3

Sign in

Addison shows a sign-in link and a short verification code:
Open the link, approve in your browser, and you’re connected. The Summation data tools wire up automatically.
4

Take the tour

A guided first run: a map of your connected data, an introduction to Addison, and your first report.

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Commands

You don’t need commands for most work — just ask data questions in plain English and Addison picks them up.

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Claude Desktop

On Claude Desktop (including Cowork), plugins are managed per organization: a Claude admin enables Addison once, then every member installs it from the org library.

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For your Claude organization admin

1

Add Addison from GitHub

Go to claude.ai → Orgranization settings → Plugins → Add plugins, select Sync from Github (you have to fork this repo or upload the zip file available on the plugin releases page.
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If you want to upload the plugin as a zip file:
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Once, it is installed, make sure to select the appropriate User access:
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2

Allow network access to Summation

Addison’s helper runs in Claude Desktop’s code-execution sandbox, which blocks outbound network access by default. Under Admin settings → Capabilities → Code execution → Network access, allow both hosts:
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3

Publish to your organization

Publish Addison to the org library so members can install it.

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For team members

1

Install from your org library

In Claude Desktop, open Settings → Plugins → Brown, find Addison in your organization’s library, and install it by clicking on the (+) icon.
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2

Start and sign in

Open a new chat and type /addison:signin. Approve the sign-in link in your browser and Addison shows a map of your data.

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Troubleshooting

Almost always the network allowlist. Ask your Claude admin to confirm api.summation.com is allowed under Code execution → Network access.
Your session expired or was never completed. Run /addison:signin again — it takes seconds.
Report generation and validation are thorough and can take a minute or two. Addison tells you it’s working — this is normal, not a hang.
On Claude Desktop, credentials live in the per-conversation sandbox and don’t always carry over. Re-running /addison:signin reconnects in seconds. A one-click connector sign-in is coming — see MCP Server.
The plugin is production, browser-sign-in only — the right default for almost everyone. For machine-to-machine access, see Public API or contact your Summation representative.