| What it does | Excel AI assistant for formulas, pivot tables, charts, and data analysis
| A harness-agnostic framework for AI coding tools
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| Pricing model | Freemium
| Open source
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| Pricing | Free plan: $0 forever with 50 credits a month. Pro: $9/month (≈3,000 credits a month). Pro Plus: $18/month (≈10,000 credits a month). Annual billing saves 30% on paid plans.
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| Key features | - Chat with Excel and CSV files in plain English
- Generate formulas for Excel, Google Sheets, LibreOffice Calc, and Airtable
- Build native Excel pivot tables, slicers, and pivot charts
- Create charts and data visualizations
- Generate automation scripts (VBA, Apps Script, Python)
- Create PowerPoint and PDF presentations from spreadsheet data
- Share chats with secure share links
| - Configure plugins, skills, MCP servers, and hooks in a single harness.yaml file
- Observatory: monitor every session, tool call, and minute of activity
- Memory: persistent knowledge graph for AI orientation
- Comparator: run prompts across Claude Code, Cursor, and Copilot side by side
- Import existing configs from multiple AI coding tools automatically
- Share complete setup via single file with teammates
- Harness Parity: verify all connected AI tools end up with identical configuration
- Cross-harness compatibility table showing actual tool capabilities
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| What makes it different | - Combines multiple spreadsheet tools (formulas, pivots, charts, automation) in one workspace instead of separate tools
- Works entirely in the browser with no installation required
- Supports 50+ languages globally
- Checks new Excel and Google Sheets functions against official documentation
| - Import-first approach: reads existing configs from all your tools and converges them before you write YAML
- No marketing gloss: capability table generated at build time from actual adapter code, not hand-maintained
- Portable across tools: single harness.yaml travels with you to every machine and tool
- Open source and free: no cost beyond existing Claude subscription
- Based on open specification: Harness Protocol is vendor-neutral and JSON Schema validated
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 50 ● no change since last check | 16 ● no change since last check |
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| Trust Flow (Majestic) | 12 | 0 |
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| Citation Flow (Majestic) | 37 | 20 |
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| Referring domains (Majestic) | 847 | 11 |
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GPTExcel
Harness Kit