Excel for your AI agent

Give Claude Code, Cursor, Codex or your own agent Excel through one MCP URL and one key. Your team signs in to Excel once and the agent never holds a token. Reads run at once; anything that changes Excel waits for your approval.

Get your key Read the docs

125: Excel actions your agent gets as tools
1 URL: one endpoint, one key per agent
60/min: calls per key, hard caps on top
0: Excel credentials inside your agent

Actions

What your agent can do in Excel

A sample of the 125 actions. Your agent sees the full list with tools/list.

Reads · run at once

Calculate Workbook Function
Download Workbook
Get Excel Application
Get chart
Get Chart Axis
Get chart component
Get Chart Data Labels
Get chart image

Writes · wait for your approval

Add Chart
Add Named Item
Add SharePoint Worksheet
Add Table
Add Table Column
Add Table Row
Add Workbook Permission
Add Worksheet

Quickstart

Connect Excel to your agent in two minutes

Create your account and connect Excel with its normal sign-in page.
Open Developers and create an agent key (you can limit it to Excel).
Add the server to your client:

Claude Code · Terminal

claude mcp add --transport http vellarin https://hub.vellarin.ai/api/hub/mcp --header "Authorization: Bearer <key>"

Cursor · ~/.cursor/mcp.json (or .cursor/mcp.json in a project)

{
  "mcpServers": {
    "vellarin": {
      "url": "https://hub.vellarin.ai/api/hub/mcp",
      "headers": {
        "Authorization": "Bearer ${env:VELLARIN_HUB_KEY}"
      }
    }
  }
}

Codex · ~/.codex/config.toml

[mcp_servers.vellarin]
url = "https://hub.vellarin.ai/api/hub/mcp"
bearer_token_env_var = "VELLARIN_HUB_KEY"

Questions

Excel and AI agents

How do I connect Excel to Claude Code, Cursor or Codex?

Create a free Vellarin account, connect Excel with its normal sign-in, create an agent key on the Developers page and add the Vellarin Hub MCP server to your client with one line. Your agent then sees the Excel actions as tools.

Can my agent change things in Excel without asking me?

No. Read actions run at once. Any action that sends, creates, changes or deletes something in Excel waits for the workspace owner's approval and then runs exactly once.

Does my agent get my Excel password or token?

No. The sign-in lives on the server side. Your agent holds only a Vellarin Hub key, which you can scope to Excel alone, cap per day and per month, and revoke at any moment.

What does it cost?

Hub Free includes 500 app calls a month and 1 agent key, with no card. Over the cap the answer is "upgrade or wait", never a charge.