A usage guide for the ServalSheets MCP server, which provides tools for Google Sheets operations. It explains request formats, results, safety hints, spreadsheet resources, and formula knowledge files.

Reading spreadsheet data, writing changes, resolving ranges, using formulas, and interpreting ServalSheets responses.

It helps an AI assistant call spreadsheet tools correctly and handle errors or potentially destructive changes safely.

guides — Skill for Claude Code and Codex by khill1269

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add khill1269/servalsheets --skill guides

Clone the repo

git clone --depth 1 https://github.com/khill1269/servalsheets

Made for: Claude Code, Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/khill1269/servalsheets/guides.svg)](https://agentmods.dev/skills/khill1269/servalsheets/guides)

Your own site

<a href="https://agentmods.dev/skills/khill1269/servalsheets/guides"><img src="https://agentmods.dev/badge/skills/khill1269/servalsheets/guides.svg" alt="Measured on agentmods" height="20"></a>

Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 4,328 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00018	$0.04328
Opus 5	$0.00009	$0.02164
Sonnet 5	$0.00004	$0.00866
Haiku 4.5	$0.00002	$0.00433

Measured 6d ago against content hash b8dc74035178, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

guides 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 6d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

guides — 100% identical, 4 lines differ

docs/guides/SKILL.md · 595 lines

How it starts

The opening of the file, as written. The whole thing — 595 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ServalSheets Skill Guide for Claude

This guide helps Claude (and other AI assistants) use ServalSheets MCP server effectively.

Overview

ServalSheets provides 25 tools with 410 actions for comprehensive Google Sheets operations. It's production-grade with safety rails, semantic range resolution, and intelligent batching.

MCP Protocol Notes (2025-11-25)

ServalSheets follows MCP 2025-11-25. Use protocol-level features when available.

Tool results are MCP CallToolResult. Prefer structuredContent.response; check response.success and read response.error when false. isError may be set.
Tool inputs are wrapped under request (e.g., { request: { action: 'read', ... } }).
Tool annotations are provided (readOnlyHint, destructiveHint, idempotentHint, openWorldHint). Use them to choose safe operations and confirm destructive changes.
Resources:
- sheets:///{spreadsheetId} returns spreadsheet metadata (properties + sheet list).
- sheets:///{spreadsheetId}/{range} returns range values (A1 notation; URL-encoded).
- knowledge:///formulas/financial.json, knowledge:///formulas/lookup.json, knowledge:///formulas/key-formulas.json
- knowledge:///templates/common-templates.json Use resources/list and resources/read to discover and load.
Prompts: use prompts/list to discover the full current set. Common starter workflows include welcome, test_connection, first_operation, analyze_spreadsheet, transform_data, create_report, and clean_data.
Long operations may emit MCP progress notifications. Treat them as status only.
Large reads may return truncated: true and resourceUri. You can read the URI with the range resource; if you cannot fetch it, request a narrower range or use batch reads.

Core Capabilities

1. Data Operations (sheets_data)

What it does: Read, write, append, and batch operations on cell values

Best practices:

Use valueRenderOption: 'FORMATTED_VALUE' for human-readable data
Use valueRenderOption: 'UNFORMATTED_VALUE' for calculations
Always specify valueInputOption when writing (typically 'USER_ENTERED' for formulas)
Use batch operations for multiple ranges to save API calls

Read the full file on GitHub · 595 lines

Files

What ships with it

43 files 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.

Changes

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.

6d ago First seen · 595 lines · 18 tokens per session scan A b8dc74035178

Subscribe to this mod's changes

guides is a skill published in the GitHub repository khill1269/servalsheets (0 stars, last pushed yesterday), licensed MIT. It adds 18 tokens to every session and 4,328 once invoked, about $0.0001 per session on Opus 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.

Documents Spreadsheets automation google-api google-sheets guide mcp mcp-server sheets spreadsheet

guides

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

Copies of this mod

How it starts

ServalSheets Skill Guide for Claude

Overview

MCP Protocol Notes (2025-11-25)

Core Capabilities

1. Data Operations (sheets_data)

What ships with it

What this file has done since we first saw it

Other skills, from other repositories

spreadsheet-formula-helper

gsheets

google-workspace

sheets-automation

excel-automation

xlsx-edit