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.
npx skills add P4rthPat3l/sheetcraft-mcp --skill managing-google-sheetsgit clone --depth 1 https://github.com/P4rthPat3l/sheetcraft-mcpWrote 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/p4rthpat3l/sheetcraft-mcp/managing-google-sheets)<a href="https://agentmods.dev/skills/p4rthpat3l/sheetcraft-mcp/managing-google-sheets"><img src="https://agentmods.dev/badge/skills/p4rthpat3l/sheetcraft-mcp/managing-google-sheets/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/p4rthpat3l/sheetcraft-mcp/managing-google-sheets"><img src="https://agentmods.dev/badge/skills/p4rthpat3l/sheetcraft-mcp/managing-google-sheets.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 | $0.00087 | $0.02049 |
| Opus 5.5 | $0.00035 | $0.00820 |
| Sonnet 5.5 | $0.00017 | $0.00410 |
| Haiku 4.5 | $0.00009 | $0.00205 |
Grade A, and why
managing-google-sheets 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 1mo 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 — 149 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Managing Google Sheets
Boundaries (read before working around a missing capability)
- Never read or copy credentials (
~/.config/sheetcraft-mcp/*, token stores, service-account keys) and never hand-roll Google API calls in scripts. Everything the API can do is exposed as a tool; if a parameter seems missing, your tool list may be stale. - Tool list is per-session. If a parameter you remember as missing suddenly matters, re-check the tool's current schema (
help <op>/ tools/list) instead of assuming the old behavior — the server may have been updated. - Never print credentials into chat output. Don't
cat,env | grep, or otherwise display API keys, client secrets, or token files — secrets in the transcript are compromised secrets and must be rotated. If a task needs a credential check, verify existence (ls) and say so, never the contents. - Bypassing the MCP to call Google APIs directly (scripts using stored tokens) is out of bounds even when it seems faster. If a tool genuinely can't do something, say so instead of working around it.
via the
sheetsCLI
The sheets CLI (from the sheetcraft-mcp npm package) is the terminal surface for a Google
Sheets toolset. One install provides both this CLI and an MCP server (sheets-mcp); they
share auth and behavior. Prefer the CLI when working from a terminal/agent context.
Zero prerequisites before ANY command
Auth must exist before the first API call. Check once:
sheets auth status
# not logged in? one-time setup:
# 1. OAuth client (Desktop app) JSON → ~/.config/sheetcraft-mcp/oauth-client.json
# 2. sheets auth login # opens browser, consent, done
If a command fails with Missing credentials, run sheets auth login — never try to
construct tokens yourself.
Command shape (memorize this)
sheets <op> key=value key2=value2 [--json] [--stdin-json]
sheets list # all ops by toolset — run this when unsure what exists
sheets help <op> # full JSON schema of one op — run this before first use of an op
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.
- 1mo ago First seen · 149 lines · 87 tokens per session scan A c6898dd2f84f
managing-google-sheets is a skill published in the GitHub repository P4rthPat3l/sheetcraft-mcp (1 stars, last pushed 1mo ago), licensed MIT. It adds 87 tokens to every session and 2,049 once invoked, about $0.0003 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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