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Agent skill

Microsoft Excel

by CraftOS-dev in CraftOS-dev/CraftBot

Microsoft Excel API integration with managed OAuth. An agent skill from CraftOS-dev/CraftBot.

MITAuto-check passedEducation

Install Microsoft Excel

skills CLI
$ npx skills add CraftOS-dev/CraftBot --skill microsoft-excel -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install CraftOS-dev/CraftBot microsoft-excel --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/CraftOS-dev/CraftBot.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/microsoft-excel .claude/skills/microsoft-excel && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
microsoft-excel
GitHub stars
392
Used in
1 other repo
Token cost
~3.5k tokens
SKILL.md length
539 words
Files
4
Skills in repo
89
Repo updated
First seen
Licence
MIT

At a glance

Microsoft Excel API integration with managed OAuth. An agent skill from CraftOS-dev/CraftBot.

  • Works in 3 steps: Sign in or create an account at maton.ai → Go to maton.ai/settings → Copy your API key
  • Users want to read
  • SKILL.md covers Quick Start, Base URL, Authentication and Connection Management, plus 6 more sections
  • Calls python and curl; reaches gateway.maton.ai and ctrl.maton.ai; needs MATON_API_KEY

What it does

Microsoft Excel is an agent skill from CraftOS-dev/CraftBot. Microsoft Excel API integration with managed OAuth. Read and write Excel workbooks, worksheets, ranges, tables, and charts stored in OneDrive. Use this skill when users want to read or modify Excel spreadsheets, manage worksheet data, work with tables, or access cell values. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway).

Its SKILL.md is about 3.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files (for example `.clawhub/origin.json` and `_meta.json`). Compatibility notes: Requires network access and valid Maton API key

It sits in Education, covering Educational content, Excel spreadsheets and Cloud office suites. It works with Microsoft Excel and Microsoft OneDrive. The repository describes itself as: One agent. Every kind of work. The licence is MIT.

When your agent uses it

  • Users want to read
  • Modify Excel spreadsheets
  • Manage worksheet data
  • Work with tables

Example prompts

  • “/microsoft-excel”

Requirements

  • Python 3
  • A credential in MATON_API_KEY
  • A credential in YOUR_API_KEY
  • Compatibility (from SKILL.md): Requires network access and valid Maton API key

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Sign in or create an account at maton.ai
  2. Go to maton.ai/settings
  3. Copy your API key

What it can do on your machine

Read from SKILL.md and the folder at commit b50970c. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • python
    • curl

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • gateway.maton.ai
    • ctrl.maton.ai
    • connect.maton.ai

    Also links to:

    • learn.microsoft.com
    • maton.ai
    • discord.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • MATON_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Requires network access and valid Maton API key

    From compatibility in the SKILL.md frontmatter.

Context cost

Microsoft Excel loads about 3.5k tokens when it runs. Until then it costs about 97 tokens; SKILL.md has 539 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~97
When it runs · the whole SKILL.md, loaded when a task matches
~3.5k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from CraftOS-dev/CraftBot at commit b50970c, republished under its MIT licence (© CraftOS-dev). 539 words, ~3,453 tokens.

Download SKILL.mdSave it as .claude/skills/microsoft-excel/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
microsoft-excel
description
Microsoft Excel API integration with managed OAuth. Read and write Excel workbooks, worksheets, ranges, tables, and charts stored in OneDrive. Use this skill when users want to read or modify Excel spreadsheets, manage worksheet data, work with tables, or access cell values. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway).
compatibility
Requires network access and valid Maton API key
metadata.author
maton
metadata.version
1.0

Microsoft Excel

Access the Microsoft Excel API (via Microsoft Graph) with managed OAuth authentication. Read and write workbooks, worksheets, ranges, tables, and charts stored in OneDrive or SharePoint.

Quick Start

bash
# List worksheets in a workbook
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Base URL

https://gateway.maton.ai/microsoft-excel/{native-api-path}

Replace {native-api-path} with the actual Microsoft Graph API endpoint path. The gateway proxies requests to graph.microsoft.com and automatically injects your OAuth token.

Authentication

All requests require the Maton API key in the Authorization header:

Authorization: Bearer $MATON_API_KEY

Environment Variable: Set your API key as MATON_API_KEY:

bash
export MATON_API_KEY="YOUR_API_KEY"
Getting Your API Key
  1. Sign in or create an account at maton.ai
  2. Go to maton.ai/settings
  3. Copy your API key

Connection Management

Manage your Microsoft Excel OAuth connections at https://ctrl.maton.ai.

List Connections
bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections?app=microsoft-excel&status=ACTIVE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF
Create Connection
bash
python <<'EOF'
import urllib.request, os, json
data = json.dumps({'app': 'microsoft-excel'}).encode()
req = urllib.request.Request('https://ctrl.maton.ai/connections', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF
Get Connection
bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Response:

json
{
  "connection": {
    "connection_id": "4751ac89-3970-47e1-872c-eacdf4291732",
    "status": "ACTIVE",
    "creation_time": "2026-02-07T00:43:18.565932Z",
    "last_updated_time": "2026-02-07T00:43:29.729782Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "microsoft-excel",
    "metadata": {}
  }
}

Open the returned url in a browser to complete OAuth authorization.

Delete Connection
bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}', method='DELETE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF
Specifying Connection

If you have multiple Microsoft Excel connections, specify which one to use with the Maton-Connection header:

bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/microsoft-excel/v1.0/me/drive')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Maton-Connection', '4751ac89-3970-47e1-872c-eacdf4291732')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

If omitted, the gateway uses the default (oldest) active connection.

Workbook Access Patterns

You can access workbooks using either ID-based or path-based patterns:

By File ID:

/microsoft-excel/v1.0/me/drive/items/{file-id}/workbook/...

By File Path:

/microsoft-excel/v1.0/me/drive/root:/{path-to-file}:/workbook/...

API Reference

Drive Operations
Get Drive Info
bash
GET /microsoft-excel/v1.0/me/drive
List Root Files
bash
GET /microsoft-excel/v1.0/me/drive/root/children
Search for Excel Files
bash
GET /microsoft-excel/v1.0/me/drive/root/search(q='.xlsx')
Upload Excel File
bash
PUT /microsoft-excel/v1.0/me/drive/root:/{filename}.xlsx:/content
Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

{binary xlsx content}
Session Management

Sessions improve performance for multiple operations. Recommended for batch operations.

Create Session
bash
POST /microsoft-excel/v1.0/me/drive/root:/{path}:/workbook/createSession
Content-Type: application/json

{
  "persistChanges": true
}

Response:

json
{
  "persistChanges": true,
  "id": "cluster=PUS7&session=..."
}

Use the session ID in subsequent requests:

workbook-session-id: {session-id}
Close Session
bash
POST /microsoft-excel/v1.0/me/drive/root:/{path}:/workbook/closeSession
workbook-session-id: {session-id}
Worksheet Operations
List Worksheets
bash
GET /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets

Response:

json
{
  "value": [
    {
      "id": "{00000000-0001-0000-0000-000000000000}",
      "name": "Sheet1",
      "position": 0,
      "visibility": "Visible"
    }
  ]
}
Get Worksheet
bash
GET /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets('Sheet1')
Create Worksheet
bash
POST /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets
Content-Type: application/json

{
  "name": "NewSheet"
}
Update Worksheet
bash
PATCH /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets('Sheet1')
Content-Type: application/json

{
  "name": "RenamedSheet",
  "position": 2
}
Delete Worksheet
bash
DELETE /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets('{worksheet-id}')

Returns 204 No Content on success.

Range Operations
Get Range
bash
GET /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets('Sheet1')/range(address='A1:B2')

Response:

json
{
  "address": "Sheet1!A1:B2",
  "values": [
    ["Hello", "World"],
    [1, 2]
  ],
  "formulas": [
    ["Hello", "World"],
    [1, 2]
  ],
  "text": [
    ["Hello", "World"],
    ["1", "2"]
  ],
  "numberFormat": [
    ["General", "General"],
    ["General", "General"]
  ],
  "rowCount": 2,
  "columnCount": 2
}
Get Used Range
bash
GET /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets('Sheet1')/usedRange
Update Range
bash
PATCH /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets('Sheet1')/range(address='A1:B2')
Content-Type: application/json

{
  "values": [
    ["Updated", "Values"],
    [100, 200]
  ]
}
Clear Range
bash
POST /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets('Sheet1')/range(address='A1:B2')/clear
Content-Type: application/json

{
  "applyTo": "All"
}

Options: All, Formats, Contents

Table Operations
List Tables
bash
GET /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets('Sheet1')/tables
Create Table from Range
bash
POST /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets('Sheet1')/tables/add
Content-Type: application/json

{
  "address": "A1:C4",
  "hasHeaders": true
}

Response:

json
{
  "id": "{6D182180-5F5F-448B-9E9C-377A5251CFC5}",
  "name": "Table1",
  "showHeaders": true,
  "showTotals": false,
  "style": "TableStyleMedium2"
}
Get Table
bash
GET /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/tables('Table1')
Update Table
bash
PATCH /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/tables('Table1')
Content-Type: application/json

{
  "name": "PeopleTable",
  "showTotals": true
}
Get Table Rows
bash
GET /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/tables('Table1')/rows

Response:

json
{
  "value": [
    {
      "index": 0,
      "values": [["Alice", 30, "NYC"]]
    },
    {
      "index": 1,
      "values": [["Bob", 25, "LA"]]
    }
  ]
}
Add Table Row
bash
POST /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/tables('Table1')/rows
Content-Type: application/json

{
  "values": [["Carol", 35, "Chicago"]]
}
Delete Table Row
bash
DELETE /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/tables('Table1')/rows/itemAt(index=0)

Returns 204 No Content on success.

Get Table Columns
bash
GET /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/tables('Table1')/columns
Add Table Column
bash
POST /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/tables('Table1')/columns
Content-Type: application/json

{
  "values": [["Email"], ["alice@example.com"], ["bob@example.com"]]
}
Named Items
List Named Items
bash
GET /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/names
Charts
List Charts
bash
GET /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets('Sheet1')/charts
Add Chart
bash
POST /microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets('Sheet1')/charts/add
Content-Type: application/json

{
  "type": "ColumnClustered",
  "sourceData": "A1:C4",
  "seriesBy": "Auto"
}

Code Examples

JavaScript
javascript
// Get range values
const response = await fetch(
  "https://gateway.maton.ai/microsoft-excel/v1.0/me/drive/root:/data.xlsx:/workbook/worksheets('Sheet1')/range(address='A1:B10')",
  {
    headers: {
      'Authorization': `Bearer ${process.env.MATON_API_KEY}`
    }
  }
);
const data = await response.json();
console.log(data.values);
Python
python
import os
import requests

# Update range values
response = requests.patch(
    "https://gateway.maton.ai/microsoft-excel/v1.0/me/drive/root:/data.xlsx:/workbook/worksheets('Sheet1')/range(address='A1:B2')",
    headers={"Authorization": f"Bearer {os.environ['MATON_API_KEY']}"},
    json={"values": [["Name", "Age"], ["Alice", 30]]},
)
print(response.json())
Show full SKILL.md (241 more words)Show less

Notes

  • Only .xlsx files are supported (not legacy .xls)
  • Worksheet names with special characters need URL encoding
  • Table and worksheet IDs containing { and } must be URL-encoded (%7B and %7D)
  • Sessions expire after ~5 minutes of inactivity (persistent) or ~7 minutes (non-persistent)
  • Use null in value arrays to skip updating specific cells
  • Blank cells should use "" (empty string)
  • Range addresses use A1 notation (e.g., A1:C10, Sheet1!A1:B5)
  • IMPORTANT: When using curl commands, use curl -g when URLs contain parentheses to disable glob parsing
  • IMPORTANT: When piping curl output to jq or other commands, environment variables like $MATON_API_KEY may not expand correctly in some shell environments

Error Handling

StatusMeaning
400Missing Microsoft Excel connection or invalid request
401Invalid or missing Maton API key
404Item not found or session expired
429Rate limited
4xx/5xxPassthrough error from Microsoft Graph API
Common Error Codes
CodeDescription
ItemNotFoundFile or resource doesn't exist
ItemAlreadyExistsWorksheet or table with that name already exists
InvalidArgumentInvalid parameter or missing required field
SessionNotFoundSession expired or doesn't exist
Troubleshooting: API Key Issues
  1. Check that the MATON_API_KEY environment variable is set:
bash
echo $MATON_API_KEY
  1. Verify the API key is valid by listing connections:
bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF
Troubleshooting: Invalid App Name
  1. Ensure your URL path starts with microsoft-excel. For example:
  • Correct: https://gateway.maton.ai/microsoft-excel/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets
  • Incorrect: https://gateway.maton.ai/v1.0/me/drive/root:/workbook.xlsx:/workbook/worksheets

Resources

© CraftOS-dev, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files in skills/microsoft-excel of CraftOS-dev/CraftBot.

  • SKILL.md
  • .clawhub/origin.json
  • LICENSE.txt
  • _meta.json

Open the folder on GitHubat commit b50970c

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in CraftOS-dev/CraftBot, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Microsoft Excel next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

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Add Data Sourcemicrosoft/power-platform-skills9671 repos~1.1kAutomated safety check: PassMIT
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Google Workspacetaracodlabs/aiden849—~1.1kAutomated safety check: PassApache-2.0

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Works with

Categories

Questions about Microsoft Excel

What does Microsoft Excel do?

Microsoft Excel API integration with managed OAuth. An agent skill from CraftOS-dev/CraftBot. Microsoft Excel is an agent skill from CraftOS-dev/CraftBot. Microsoft Excel API integration with managed OAuth.

When should I use Microsoft Excel?

Microsoft Excel fits situations like: users want to read; modify Excel spreadsheets; manage worksheet data; work with tables.

How do I install Microsoft Excel in Claude Code?

Run `npx skills add CraftOS-dev/CraftBot --skill microsoft-excel -a claude-code`. Or copy the skill folder (skills/microsoft-excel in CraftOS-dev/CraftBot) into .claude/skills/microsoft-excel in your project. Claude Code loads it when a task matches its description.

How do I install Microsoft Excel in Codex?

Run `npx skills add CraftOS-dev/CraftBot --skill microsoft-excel -a codex`. Or copy the skill folder (skills/microsoft-excel in CraftOS-dev/CraftBot) into .agents/skills/microsoft-excel in your project. Codex loads it when a task matches its description.

Can I use Microsoft Excel in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add CraftOS-dev/CraftBot --skill microsoft-excel -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/microsoft-excel, .gemini/skills/microsoft-excel, .github/skills/microsoft-excel and .opencode/skills/microsoft-excel in your project.

What does Microsoft Excel need to run?

Going by SKILL.md and its folder, Microsoft Excel needs the command-line tools its instructions call (python and curl) and credentials named MATON_API_KEY. Our summary lists: Python 3; A credential in MATON_API_KEY; A credential in YOUR_API_KEY. Compatibility (from SKILL.md): Requires network access and valid Maton API key.

Does Microsoft Excel access the network?

SKILL.md names 6 domains. In commands or code: gateway.maton.ai, ctrl.maton.ai and connect.maton.ai; the agent is likely to contact these when it follows the instructions. As links in the text: learn.microsoft.com, maton.ai and discord.com. This is read from the text; nothing was executed.

Is Microsoft Excel safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Microsoft Excel use?

Microsoft Excel is published under the MIT licence (from the LICENSE file in the skill folder). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Microsoft Excel use?

About 3.5k tokens (SKILL.md is roughly 14k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Microsoft Excel?

Skills that share tags, products or a category with Microsoft Excel: aai-cli Microsoft 365 (aai-labs/agent-barn, 109 stars), Add Data Source (microsoft/power-platform-skills, 967 stars), Add Excel (microsoft/power-platform-skills, 967 stars) and Excel Unmerge Before Write (HKUDS/OpenSpace, 7.7k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Microsoft Excel?

CraftOS-dev (a GitHub user) maintains it in CraftOS-dev/CraftBot, which has 392 GitHub stars. The repository holds 89 skills in this directory. The repository was last updated on October 7, 2026.

Source: CraftOS-dev/CraftBot on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.