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 agentmods add skills/tankpkg/tank/google-sheetsnpx skills add tankpkg/tank --skill google-sheetsgit clone --depth 1 https://github.com/tankpkg/tankWhat 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 | $0.00000 | $0.00465 |
| Opus 5 | $0.00000 | $0.00233 |
| Sonnet 5 | $0.00000 | $0.00093 |
| Haiku 4.5 | $0.00000 | $0.00047 |
Grade A, and why
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 2d 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 — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Google Sheets
Read, write, format, and analyze spreadsheet data through the Google Sheets API.
Overview
This skill teaches AI agents to work with Google Sheets — reading and writing cell data, formatting, creating charts, managing named ranges, and using formulas. Supports both simple value operations and complex batch updates.
Capabilities
Reading Data
- Read single cells, ranges, and multiple ranges in one call
- Get values with formatting metadata
- Read entire sheets or named ranges
- Choose value render options: FORMATTED_VALUE, UNFORMATTED_VALUE, FORMULA
Writing Data
- Write to single cells or ranges
- Append rows to the end of a table
- Batch update multiple ranges in a single request
- Choose input options: RAW or USER_ENTERED
Formatting
- Set cell background colors, font styles, sizes, and colors
- Apply number formats (currency, percentage, dates, custom)
- Set borders, merge cells, alignment
- Apply conditional formatting rules and data validation
Sheet Management
- Create, rename, delete, and reorder sheets
- Copy sheets between spreadsheets
- Freeze rows and columns, hide/show elements
- Set sheet-level protection
Charts & Visualization
- Create embedded charts (bar, line, pie, scatter, area, combo)
- Configure chart titles, legends, axes, and data ranges
Authentication
Requires Google OAuth 2.0 with spreadsheets or spreadsheets.readonly scope.
Permissions
| Permission | Scope | Reason |
|---|---|---|
| Network | *.googleapis.com |
Sheets API calls |
| Network | accounts.google.com |
OAuth authentication |
| Filesystem | Read ./** |
Read local CSV/data files |
| Subprocess | None | Not required |
Best Practices
- Use A1 notation for ranges — quote sheet names with spaces
- Batch operations to minimize API calls
- USER_ENTERED for formulas and dates
- Append, don't overwrite — use
values.appendfor adding rows - Named ranges instead of hardcoded A1 references
What ships with it
2 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.
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.
- 2d ago First seen · 64 lines · 0 tokens per session scan A fcaebae022da
google-sheets is a skill published in the GitHub repository tankpkg/tank (38 stars, last pushed 27d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 465 tokens. 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 2026-08-30.
Other skills, from other repositories
git-cheatsheet
Use this skill when working with git commands, version control, or repository management.
reskill-usage
Teaches AI agents how to use reskill — a Git-based package manager for AI agent skills. Covers CLI commands, install formats, configuration, publishing, and common workflows.
find-skills
Helps users discover and install agent skills when they ask questions like "how do I do X", "find a skill for X", "is there a skill that can...", or express interest in extending capabilities. Uses reskill as the package manager.
capabilities-manager
Manage capa CLI configuration — capabilities.yaml / capabilities.json, skills, MCP servers, tools, hooks, sub-agents, rules, plugins, AGENTS.md / CLAUDE.md, security options, tool exposure modes, capa wrap shadow workspaces, --passthrough native writes, registries (including Claude marketplaces), activity traces, and…
clawhub
Search, install and manage skills from ClawdHub.
feishu-cli
Use this skill when a user asks to install, configure, authenticate, verify, or use Feishu/Lark CLI capabilities from an Agent workflow.