Describe the Task.
Watch It Happen.
ExcelMaster is an AI agent that lives inside your Excel. Tell it what you need — it writes VBA, runs Python, builds charts, cleans data — and you see every step happen in real time, right in your spreadsheet.
Range("D2").AutoFill Range("D2:D5")
Range("D2:D5").NumberFormat = "0.0%"
AI Tells You What to Do.
You Still Have to Do It.
ChatGPT gives you a formula. Copilot writes a script. Then you spend 30 minutes figuring out where to put it, debugging edge cases, and reformatting the output.
You're Still Doing the Work
- 1Ask AI: "How do I calculate weighted average across sheets?"
- 2Get a formula. Copy it. Paste into cell. Wrong sheet reference.
- 3Go back to AI. Explain the error. Get a revised formula.
- 4Paste again. Works for one cell. Manually drag to fill 200 rows.
- 5Now format the results. Then build the chart. Then fix the labels...
You Describe. It Executes.
- 1"Calculate weighted average across all department sheets and add a summary chart"
- 2Agent reads your workbook structure, writes VBA, executes it
- 3Results appear in your spreadsheet. Chart is created. Formatting applied.
Not an Assistant. An Executor.
ExcelMaster doesn't just suggest — it reads your data, writes code, runs it, verifies the output, and retries if something goes wrong. Fully autonomous.
Real-Time Execution
Describe what you need in plain language. ExcelMaster writes VBA or Python, executes it directly in your workbook, and you watch the results appear cell by cell.
Full Transparency
Every action the agent takes is visible. You see the code it writes, the cells it modifies, and the reasoning behind each step — in a sidebar right next to your spreadsheet.
Built-in Safety Net
Every operation starts with an automatic backup. If the agent makes an error, it rolls back and retries. You can always restore to any previous state.
One Prompt. Real Results.
From financial modeling to data cleanup, ExcelMaster handles complex multi-step tasks that would take hours manually.
From Raw Data to Full Model
Creates the revenue forecast, calculates WACC, builds the DCF table with terminal value, adds sensitivity analysis — all formatted and formula-linked.
10,000 Rows, One Command
Scans your dataset, normalizes inconsistent formats, deduplicates intelligently, and applies conditional formatting to highlight issues.
Board-Ready in Minutes
Aggregates data from transaction sheets, builds structured P&L rows, adds subtotals, applies professional formatting, and creates comparison charts.
Complex VBA, Zero Debugging
Generates production-quality VBA that loops through sheets, maps columns dynamically, handles edge cases, and runs immediately — no manual editing needed.
The Excel Skill That OpenClaw Has Been Missing
OpenClaw's 5,400+ skills can browse the web, manage calendars, and write code — but when it comes to Excel, they're limited to reading .xlsx files with openpyxl or calling cloud APIs. No VBA. No macros. No desktop automation.
ExcelMaster changes that. Install it as an OpenClaw skill on your Windows node, and your agent gains full control of desktop Excel — writing and executing VBA, running Python, creating charts, formatting reports — all through one prompt from any OpenClaw channel.
Your OpenClaw agent on Linux tells your Windows node what to do. ExcelMaster does the rest — inside your real Excel, on your real machine.
| Capability | openpyxl Skills | Graph API Skills | ExcelMaster Skill |
|---|---|---|---|
| Execute VBA macros | — | — | ✓ Full support |
| Run Python scripts | — | — | ✓ xlwings |
| Real-time desktop control | File only | Cloud only | ✓ Live WYSIWYG |
| Charts & pivot tables | Basic | Limited | ✓ Full Excel engine |
| Backup & rollback | — | — | ✓ Auto-backup |
| Works with local .xlsm | Partial | — | ✓ Full support |
| Screenshot verification | — | — | ✓ Aspose |
Three Steps to Automation
Install the Add-in
Download and run the installer. ExcelMaster appears as a tab in your Excel ribbon. No configuration needed.
Describe Your Task
Open any workbook and click ExcelMaster. Type what you need in the chat sidebar — plain English or Chinese.
Watch It Execute
The agent analyzes your data, writes code, runs it, and delivers results. You see everything happen live.
面倒なExcel作業を今日から自動化しましょう！
Starter
With free trial for 3 days
$12
$1
/ month
Then $6.9/month
- Queries Per Month
2000 responses per month
ExcelMaster FineTune is an in-house model specifically trained for Excel tasks, surpassing most competitors and general assistants
- Advanced Features
AI Functions
Excel Problem Solving Assistant - General
understands complex structure and gives tailored solutions with formula, VBA, model building, etc
Advanced Formula Assistant
AI Automation Assistant in VBA via ChatGPT
Fully Featured Python Assistant in Excel via ChatGPTIndustry First
Data Clean, Transform & Classify
- Excel File Supoort
Multi-Sheet Structure Understanding
Essential for Advanced Formulas, VBA, and Complex Problem Solving （up to 3 selected sheets）
competitors including Microsoft Copilot limited to 1, or even zero understanding
1500 Excel Templates for professional UserNew
Pro
With free trial for 3 days
$25
$14.9
/ month
Save 50%
- Queries Per Month
2000 GPT-4.1 mini responses per month
100 GPT-4.1/Claude 4 Sonnet responses per month
OpenAI's most intelligent next generation o1 series model - coming soon
- Advanced Features
AI Functions
Excel Problem Solving Assistant - General
understands complex structure and gives tailored solutions with formula, VBA, model building, etc
Advanced Formula Assistant
AI Automation Assistant in VBA via ChatGPT
One Click VBA Execution and Auto Debug
Fully Featured Python Assistant in Excel via ChatGPTIndustry First
One Click Python Execution, Automation and Auto Debug
Data Clean, Transform & Classify
- Excel File Supoort
Multi-Sheet Structure Understanding
Essential for Advanced Formulas, VBA, and Complex Problem Solving （up to 15 selected sheets）
competitors including Microsoft Copilot limited to 1, or even zero understanding
1500 Excel Templates for professional UserNew
Premium
With free trial for 3 days
$45
$29.9
/ month
Save 58%
- Queries Per Month
Unlimited GPT-4.1 mini responses per month
300 GPT-4.1/Claude 4 Sonnet responses per month
OpenAI's most intelligent next generation o1 series model - coming soon
- More Advanced Features
AI Functions
Excel Problem Solving Assistant - General
understands complex structure and gives tailored solutions with formula, VBA, model building, etc
Advanced Formula Assistant
AI Automation Assistant in VBA via ChatGPT
One Click VBA Execution and Auto Debug
Fully Featured Python Assistant in Excel via ChatGPTIndustry First
One Click Python Execution, Automation and Auto Debug
Data Clean, Transform & Classify
- Excel File Supoort
Multi-Sheet Structure Understanding
Essential for Advanced Formulas, VBA, and Complex Problem Solving （up to 15 selected sheets）
competitors including Microsoft Copilot limited to 1, or even zero understanding
1500 Excel Templates for professional UserNew
Common Questions
ChatGPT and Claude give you formulas or code snippets that you need to manually copy, paste, and debug. Copilot can make edits but cannot run VBA or Python. ExcelMaster does the full loop: it reads your data, writes code, executes it inside your Excel, verifies the result, and fixes errors automatically.
ExcelMaster runs as a local VSTO add-in on your machine. Your spreadsheet data is processed locally — it is not uploaded to any server. Only the text of your prompts and the agent responses pass through the AI model API, not your raw spreadsheet files.
ExcelMaster supports Microsoft Excel 2016 and later on Windows 10/11. It requires the desktop version of Excel (not the web version).
ExcelMaster automatically creates a backup before every operation. If anything goes wrong, it can roll back to the exact state before the change. You can also manually restore to any previous checkpoint at any time.
ExcelMaster understands natural language prompts in English and Chinese. You can describe tasks in whichever language you are comfortable with.
No. ExcelMaster generates and executes code automatically. You just describe what you want in plain language. However, if you do know VBA or Python, you can review and modify the generated code before execution.