Give AI Assistants Excel Superpowers
Imagine ChatGPT creating perfect quotes using your pricing spreadsheet. Or Claude analyzing scenarios with your financial models. SpreadAPI makes it happen—in minutes, not months.
Real Calculations, Zero Hallucinations
Transform your spreadsheets into powerful APIs that can be called by applications, AI assistants, or integrated into any workflow. Your Excel expertise becomes instantly accessible.
Predictable Every Time
AI gives different answers each time. But Excel? Excel actually calculates. Every. Single. Time.
500+ Excel Functions
VLOOKUP, XLOOKUP, array formulas, financial functions - 500+ functions work exactly as in Excel
Real-Time Calculations
50ms response times with intelligent caching and pre-warmed Excel engines
No Files Sent to OpenAI/Anthropic
Your Excel stays on SpreadAPI servers. AI only sees the specific inputs and outputs you define
AI-Ready with MCP
Native Model Context Protocol support for seamless ChatGPT and Claude integration
Zero Learning Curve
Your team keeps using Excel as always. AI gets superpowers. No training needed
Editable Areas Give AI Controlled Access
Define exactly what parts of your spreadsheet AI can access. Grant read-only access to outputs, or let AI modify specific input cells or even formulas within designated areas. You stay in control while AI does the work.
Granular Permissions
Control exactly what AI can see and modify. Set permissions for values, formulas, formatting, and structure — keeping your core business logic secure.
Formula Intelligence
AI can not only read values but understand and even optimize your Excel formulas. Enable what-if scenarios and let AI experiment within safe boundaries.
Why AI Struggles with Spreadsheet Math
We asked AI about its spreadsheet skills — here's what it honestly told us.
"I Can't Run Your Formulas"
I see your formulas and Excel's results, but I can't execute them. I work with saved values, not live calculations.
- Claude, ChatGPT & Gemini
"I Only Know 50-100 Functions"
Basic math? Sure. But Excel has hundreds more - XIRR, YIELD, array formulas? I'll miss edge cases.
- Claude, being honest
"My Errors Compound Fast"
One small mistake in cell A1? By row 1000, I'm completely off. Error propagation is my nightmare.
- Every AI Model
"I Take Forever to Calculate"
1000+ formulas? That's 2-15 minutes of dependency mapping. Excel does it in 1-2 seconds.
- Every AI Model
"Complex Models? 20% Accuracy"
With 1000+ formulas, I have 20-40% chance of getting it right. SpreadAPI? Always 100%.
- Claude & ChatGPT
"I Can't Handle Dependencies"
Cell A depends on B, B on C... I spend most time figuring out order, not calculating.
- Gemini
The AI-Excel Gap Everyone Faces
Your Excel files contain years of refined business logic. Complex pricing rules, financial models, resource calculations—all perfected over time. But when AI tries to help, it either:
Hallucinates numbers instead of calculating correctly
Requires manual copy-paste of data back and forth
Can't access your spreadsheet formulas at all
"Based on my estimates, the price would be around $4,500..."
❌ Wrong by $823
"Using your pricing model, the exact price is $3,677.42"
✓ 100% accurate, includes all discounts
From Excel to AI-Ready in 3 Steps
Upload Your Excel
Simply drag and drop your spreadsheet. SpreadAPI automatically identifies your formulas and calculations.
Define Parameters
Point and click to select input cells and output ranges. No coding required—it's as easy as using Excel.
Connect to AI
Add our MCP server to Claude or use our API with ChatGPT. Your AI assistant now has Excel superpowers!
What Becomes Possible
Customer Support That Never Gets Prices Wrong
Your support chatbot can now:
- ✓ Generate accurate quotes using your exact pricing rules
- ✓ Calculate shipping costs based on your logistics model
- ✓ Apply the right discounts for each customer tier
"Our AI support agent now handles 80% of quote requests—with 100% accuracy"
Sales Teams Creating Perfect Proposals
Empower your sales team to:
- ✓ Generate complex multi-product quotes instantly
- ✓ Run what-if scenarios during client calls
- ✓ Always use the latest pricing and promotions
"Sales cycles reduced by 40% with instant, accurate pricing"
Developers Building Smarter Applications
Let GitHub Copilot and AI coding assistants:
- ✓ Use Excel calculations directly in code
- ✓ Generate test cases from spreadsheet logic
- ✓ Build UIs that match Excel workflows perfectly
"No more reimplementing Excel formulas—just use the real thing"
Financial Analysis at AI Speed
Enable Claude or ChatGPT to:
- ✓ Run complex financial models instantly
- ✓ Generate investment scenarios with real calculations
- ✓ Create reports using your exact methodologies
"AI can now explain AND calculate our financial projections"
Works With Every AI Platform
Claude Desktop
MCP protocol built-in
ChatGPT
Custom GPT ready
Any Platform
REST API & SDKs
See It In Action
Claude Desktop + Excel = Magic
→ Base price: $12,500
→ Volume discount: -$1,875
→ Enterprise tier: -$1,250
→ Final price: $9,375
Real Excel Calculations
- ✓100% Accurate
Uses your actual Excel formulas - ✓Always Current
Updates when you change Excel - ✓Fully Secure
AI only sees results, not formulas
Connect Your AI Assistant in 3 Minutes
Choose your AI platform and follow the simple setup guide
ChatGPT
Easiest setup with OAuth - no configuration files needed
Open ChatGPT Settings
In ChatGPT, click your profile icon and navigate to Settings → Apps and Connectors (or "Apps und Konnektoren" in German).
Add SpreadAPI as MCP Server
Click Create to add a new connector. In the "MCP Server URL" field, paste your service URL:
Select OAuth as authentication method, then click Create.
Start Using Your Excel Calculations!
ChatGPT will initiate the OAuth flow. Once connected, your service appears in the connectors list. Try these prompts:
Claude Desktop
Native MCP support with automatic NPX bridge
Open Claude Desktop Settings
Click Claude → Settings (Mac) or File → Settings (Windows), then select the Developer tab and click Edit Config.
Add the SpreadAPI Configuration
Add this to your claude_desktop_config.json file:
{
"mcpServers": {
"spreadapi": {
"command": "npx",
"args": ["spreadapi-mcp"],
"env": {
"SPREADAPI_URL": "https://spreadapi.io/api/mcp/service/YOUR_SERVICE_ID",
"SPREADAPI_TOKEN": "your_token_here"
}
}
}
}YOUR_SERVICE_ID with your actual service ID and your_token_here with your API token from SpreadAPI.Restart and Start Using!
Restart Claude Desktop. The MCP bridge downloads automatically via NPX. Your service will appear in the MCP menu. Try these prompts:
Other AI Platforms & Custom Apps
REST API, SDKs, and MCP protocol for any integration
SpreadAPI works with any platform that supports REST APIs or the Model Context Protocol (MCP). Perfect for:
💡Where to Find Your Service URL & Token
- Sign up for SpreadAPI and upload your Excel file
- Define your inputs and outputs (point-and-click, no coding)
- Publish your service
- Go to Agents → MCP Integration to find your service URL and generate tokens
Need Help?
We're Here to Help
Whether you're exploring possibilities or ready to implement, we're here to help at team@airrange.io.