Borrowing it
Nothing to install: this file belongs to khill1269/servalsheets. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/khill1269/servalsheets/main/.claude/skills/google-sheets-expert/SKILL.mdgit clone --depth 1 https://github.com/khill1269/servalsheetsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/khill1269/servalsheets/google-sheets-expert)<a href="https://agentmods.dev/skills/khill1269/servalsheets/google-sheets-expert"><img src="https://agentmods.dev/badge/skills/khill1269/servalsheets/google-sheets-expert/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/khill1269/servalsheets/google-sheets-expert"><img src="https://agentmods.dev/badge/skills/khill1269/servalsheets/google-sheets-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00056 | $0.00819 |
| Opus 5.5 | $0.00022 | $0.00328 |
| Sonnet 5.5 | $0.00011 | $0.00164 |
| Haiku 4.5 | $0.00006 | $0.00082 |
Grade A, and why
google-sheets-expert scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ServalSheets — Google Sheets Expert
ServalSheets ships 25 tools exposing 410 actions across the Google Sheets surface.
Use when: (1) Working with Google Sheets via URL or ID, (2) Analyzing, cleaning, or transforming data, (3) Creating charts, reports, or dashboards, (4) Building financial models, (5) Natural language requests like "clean my data", (6) Any mention of Google Sheets, spreadsheets, or sheet data.
Key capabilities: OAuth 2.1 with PKCE, atomic transactions, task support with cancellation, MCP elicitation for confirmations, 3-layer context management, comprehensive error handling with recovery suggestions.
Tool Inventory
| Tool | Actions | Title |
|---|---|---|
sheets_advanced |
31 | Named Ranges, Protection & Tables |
sheets_agent |
8 | Agentic Execution |
sheets_analyze |
26 | AI-Powered Analysis |
sheets_appsscript |
19 | Apps Script Automation |
sheets_auth |
5 | Authentication & Setup |
sheets_bigquery |
17 | BigQuery Integration |
sheets_collaborate |
41 | Sharing & Collaboration |
sheets_composite |
21 | Multi-Step Operations |
sheets_compute |
16 | Computation Engine |
sheets_confirm |
5 | User Confirmation & Approval |
sheets_connectors |
10 | Live Data Connectors |
sheets_core |
21 | Spreadsheet & Sheet Management |
sheets_data |
25 | Cell Data Operations |
sheets_dependencies |
10 | Formula Dependencies & Scenario Modeling |
sheets_dimensions |
31 | Rows, Columns & Sorting |
sheets_federation |
4 | MCP Server Federation |
sheets_fix |
6 | Auto-Fix Issues |
sheets_format |
25 | Formatting & Styling |
sheets_history |
10 | Operation History & Undo |
sheets_quality |
4 | Data Validation & Quality |
sheets_session |
32 | Session & Context Management |
sheets_templates |
8 | Spreadsheet Templates |
sheets_transaction |
6 | Atomic Batch Operations |
sheets_visualize |
18 | Charts & Pivot Tables |
sheets_webhook |
11 | Webhook Notifications |
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 68 lines · 56 tokens per session scan A de9e19108d6b
google-sheets-expert is a skill published in the GitHub repository khill1269/servalsheets (0 stars, last pushed 1mo ago), licensed MIT. It adds 56 tokens to every session and 819 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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