Borrowing it
Nothing to install: this file belongs to moooonad/mcp-google-sheets-full. 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/moooonad/mcp-google-sheets-full/main/AGENTS.mdgit clone --depth 1 https://github.com/moooonad/mcp-google-sheets-fullWrote 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/instructions/moooonad/mcp-google-sheets-full/agents-md)<a href="https://agentmods.dev/instructions/moooonad/mcp-google-sheets-full/agents-md"><img src="https://agentmods.dev/badge/instructions/moooonad/mcp-google-sheets-full/agents-md/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/instructions/moooonad/mcp-google-sheets-full/agents-md"><img src="https://agentmods.dev/badge/instructions/moooonad/mcp-google-sheets-full/agents-md.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 | $0.02182 | $0.02182 |
| Opus 5.5 | $0.00873 | $0.00873 |
| Sonnet 5.5 | $0.00436 | $0.00436 |
| Haiku 4.5 | $0.00218 | $0.00218 |
Grade A, and why
mcp-google-sheets-full AGENTS.md 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 — 174 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Instructions for AI agents (Claude Code, Cursor, etc.) installing or operating mcp-google-sheets-full on behalf of a user. Imperative, no marketing. Read top-to-bottom on first contact.
Install + register (idempotent)
npm install -g mcp-google-sheets-full
claude mcp add google-sheets -- mcp-google-sheets-full --scope user
Replace the second line with the equivalent for the current MCP client (Cursor: edit mcp.json; Claude Desktop: edit claude_desktop_config.json). After registering, ask the user to restart the MCP client so the server is loaded.
First call: detect setup state
Always call auth_status first when starting a session against this server. It tells you which auth mode is active and what is missing.
OAuth mode response (default):
{
"auth_mode": "oauth",
"configDir": "C:\\Users\\<user>\\.mcp-google-sheets",
"credentialsPath": ".../gdrive-credentials.json",
"tokenPath": ".../gdrive-token.json",
"service_account_key_path": null,
"credentials_present": true|false,
"token_present": true|false
}
credentials_present: false→ go to OAuth setup below.credentials_present: true, token_present: false→ go to First OAuth authorization below.- Both
true→ ready to operate.
Service account mode response (env GOOGLE_APPLICATION_CREDENTIALS set):
{
"auth_mode": "service_account",
"service_account_key_path": "/path/to/sa-key.json",
"service_account_key_present": true|false,
"service_account_email": "[email protected]"
}
service_account_key_present: false→ the env var points at a missing file. Tell the user the path and ask them to fix it.service_account_key_present: true→ ready to operate, but every spreadsheet must be shared withservice_account_email(Editor or Viewer). If a tool call returns 403, that's the cause.
Auth mode selection
Do not prompt the user to pick a mode. The mode is determined automatically by whether GOOGLE_APPLICATION_CREDENTIALS is set in the server's process env:
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 · 174 lines · 2,182 tokens per session scan A ce0bb7da9c5e
mcp-google-sheets-full AGENTS.md is an instructions file published in the GitHub repository moooonad/mcp-google-sheets-full (0 stars, last pushed 5mo ago), licensed MIT. It adds 2,182 tokens to every session, about $0.0087 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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