sheets-cli

Composable Google Sheets primitives for humans and agents

Installation • Quick Start • Commands • For Agents

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Fast, deterministic CLI for Google Sheets. Read tables, append rows, update cells by key or index, batch operations—all with JSON output for programmatic consumption.

# Read a sheet as structured data
sheets-cli read table --sheet "Projects" --limit 10

# Update by key column (no fragile row indices)
sheets-cli update key --sheet "Projects" --key-col "Name" --key "Acme" --set '{"Status":"Done"}'

🆕 Agent Skills — Install as a skill for Claude Code, OpenAI Codex, or VS Code (Insiders preview; enable chat.useAgentSkills). The agent automatically discovers sheets-cli when you mention spreadsheets. See For Agents.

Installation

Prerequisites: Bun runtime

git clone https://github.com/gmickel/sheets-cli.git
cd sheets-cli
bun install
bun run build

# Binary at ./dist/sheets-cli

# Symlink
ln -s "$(pwd)/dist/sheets-cli" /usr/local/bin/sheets-cli

# Or add to shell config
echo 'export PATH="$PATH:/path/to/sheets-cli/dist"' >> ~/.zshrc

Quick Start

1. Enable APIs

1. Go to Google Cloud Console → APIs
2. Enable Google Sheets API
3. Enable Google Drive API (required for sheets find command)

2. Create OAuth Credentials

1. Go to Google Cloud Console → Credentials
2. Create OAuth 2.0 Client ID → Desktop app
3. Download the JSON file

Desktop apps auto-allow localhost redirects. CLI captures OAuth code via http://localhost:3847.

3. Authenticate

sheets-cli auth login --credentials ./client_secret.json

Browser opens → authorize → done.

4. Set Default Spreadsheet (optional)

# Set env var to avoid passing --spreadsheet every time
export SHEETS_CLI_DEFAULT_SPREADSHEET_ID="your-spreadsheet-id"

Get the ID from your sheet URL: docs.google.com/spreadsheets/d/<ID>/edit

5. Use

sheets-cli sheets list --spreadsheet <id>
sheets-cli read table --spreadsheet <id> --sheet "Sheet1" --limit 5
sheets-cli append --spreadsheet <id> --sheet "Sheet1" --values '{"Name":"New Item","Status":"Active"}'

Commands

Auth

sheets-cli auth login --credentials <file> [--token-store <path>]
sheets-cli auth status
sheets-cli auth logout

Metadata

sheets-cli sheets list [--spreadsheet <id>]
sheets-cli sheets find --name "<query>" [--limit 10]  # Search by name
sheets-cli sheet info --sheet "<name>" [--spreadsheet <id>]
sheets-cli sheet info --gid <gid> [--spreadsheet <id>]
sheets-cli header --sheet "<name>" [--header-row 1]

Read

sheets-cli read table --sheet "<name>" [--limit 500] [--range "A1:Z500"] [--raw]
sheets-cli read range --range "<sheet>!A1:Z50"

Write

sheets-cli append --sheet "<name>" --values '<json>' [--value-input USER_ENTERED|RAW] [--dry-run]
sheets-cli update row --sheet "<name>" --row 12 --set '<json>' [--dry-run]
sheets-cli update key --sheet "<name>" --key-col "Col" --key "Val" --set '<json>' [--dry-run] [--allow-multi]
sheets-cli set range --range "<sheet>!M2:M2" --values '<json_2d_array>' [--dry-run]
sheets-cli batch --ops '<json>' [--dry-run]

JSON Formats

Append/Update values

{"Name": "Acme Corp", "Status": "Active", "Start Date": "2025-01-15"}

Headerless sheets (column letters):

{"A": "Acme Corp", "C": "Active"}

Set range (2D array)

[["Value1", "Value2"], ["Value3", "Value4"]]

Batch operations

[
  {"op": "append", "sheet": "Tasks", "values": {"Name": "New Task"}},
  {"op": "updateRow", "sheet": "Tasks", "row": 5, "set": {"Status": "Done"}},
  {"op": "updateKey", "sheet": "Tasks", "keyCol": "ID", "key": "TASK-123", "set": {"Status": "Active"}},
  {"op": "setRange", "range": "Tasks!A1:B1", "values": [["Col1", "Col2"]]}
]

Output Format

All commands return JSON to stdout:

{
  "ok": true,
  "cmd": "read table",
  "spreadsheetId": "1abc...",
  "sheet": "Projects",
  "result": {
    "headers": ["Name", "Status", "Date"],
    "rows": [{"Name": "Alpha", "Status": "Active", "Date": "2025-01-15"}],
    "headerRow": 1
  }
}

Errors:

{
  "ok": false,
  "cmd": "update key",
  "error": {"code": "VALIDATION_ERROR", "message": "...", "details": {}}
}

Exit Codes

For Agents

Install Skill

# Claude Code
sheets-cli install-skill           # Project: ./.claude/skills/sheets-cli/SKILL.md
sheets-cli install-skill --global  # Personal: ~/.claude/skills/sheets-cli/SKILL.md

# OpenAI Codex
sheets-cli install-skill --codex   # ~/.codex/skills/sheets-cli/SKILL.md

Installs an Agent Skill that teaches the agent how to use sheets-cli. After installing, the agent automatically discovers sheets-cli when you mention spreadsheets, Google Sheets, or sheet names.

Codex: Requires skills = true in ~/.codex/config.toml under [features].
VS Code: Agent Skills support is in preview and only available in VS Code Insiders. Enable chat.useAgentSkills to use Agent Skills.

Restart the agent after installing to load the skill.

Workflow Pattern

Follow read → decide → dry-run → apply:

# 1. Understand current state
sheets-cli read table --sheet "Tasks" --limit 100

# 2. Dry-run
sheets-cli update key --sheet "Tasks" --key-col "ID" --key "TASK-42" --set '{"Status":"Complete"}' --dry-run

# 3. Apply
sheets-cli update key --sheet "Tasks" --key-col "ID" --key "TASK-42" --set '{"Status":"Complete"}'

Best Practices

1. Use sheets find to get spreadsheet ID from name
2. Prefer key-based updates over row indices—rows shift on insert/delete
3. Always dry-run before writes
4. Check ok field before proceeding
5. Batch related operations for atomicity
6. Column names match case-insensitively with normalized whitespace
7. Header row auto-detects—skips empty rows to find first row with data
8. Headerless sheets: read table returns columns as A, B, ...; use column letters for --set / --key-col
9. Empty sheets: append can bootstrap by writing a header row from JSON keys
10. read table --range accepts A1:Z (auto-prefixed with the sheet)
11. --spreadsheet accepts URLs—paste full Google Sheets URL directly

Development

bun run dev          # Hot-reload
bun run build        # Compile binary
bun run typecheck    # Type check
bun run lint         # Lint
bun run test         # Tests

License

MIT

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