Agent skill

Sandbox CSV

Parse and write CSV in a Code node or CodeAct action, with papaparse running on the host behind a generated facade

AGPL-3.0Auto-check passedDocuments & Office

Install Sandbox CSV

skills CLI

$ npx skills add nodetool-ai/nodetool --skill sandbox-csv -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install nodetool-ai/nodetool sandbox-csv --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/nodetool-ai/nodetool.git skills-src && mkdir -p .claude/skills && cp -r skills-src/packages/sandbox-packs/sandbox-csv .claude/skills/sandbox-csv && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "sandbox-csv" agent skill from https://github.com/nodetool-ai/nodetool/tree/main/packages/sandbox-packs/sandbox-csv into .claude/skills/sandbox-csv/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-csv", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/nodetool-ai/nodetool/tree/main/packages/sandbox-packs/sandbox-csv

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add nodetool-ai/nodetool --skill sandbox-csv -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install nodetool-ai/nodetool sandbox-csv --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/nodetool-ai/nodetool.git skills-src && mkdir -p .agents/skills && cp -r skills-src/packages/sandbox-packs/sandbox-csv .agents/skills/sandbox-csv && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "sandbox-csv" agent skill from https://github.com/nodetool-ai/nodetool/tree/main/packages/sandbox-packs/sandbox-csv into .agents/skills/sandbox-csv/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-csv", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add nodetool-ai/nodetool --skill sandbox-csv -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install nodetool-ai/nodetool sandbox-csv --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/nodetool-ai/nodetool.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/packages/sandbox-packs/sandbox-csv .cursor/skills/sandbox-csv && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "sandbox-csv" agent skill from https://github.com/nodetool-ai/nodetool/tree/main/packages/sandbox-packs/sandbox-csv into .cursor/skills/sandbox-csv/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-csv", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/nodetool-ai/nodetool.git --path packages/sandbox-packs/sandbox-csv

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add nodetool-ai/nodetool --skill sandbox-csv -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install nodetool-ai/nodetool sandbox-csv --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/nodetool-ai/nodetool.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/packages/sandbox-packs/sandbox-csv .gemini/skills/sandbox-csv && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "sandbox-csv" agent skill from https://github.com/nodetool-ai/nodetool/tree/main/packages/sandbox-packs/sandbox-csv into .gemini/skills/sandbox-csv/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-csv", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install nodetool-ai/nodetool sandbox-csv

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add nodetool-ai/nodetool --skill sandbox-csv -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/nodetool-ai/nodetool.git skills-src && mkdir -p .github/skills && cp -r skills-src/packages/sandbox-packs/sandbox-csv .github/skills/sandbox-csv && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "sandbox-csv" agent skill from https://github.com/nodetool-ai/nodetool/tree/main/packages/sandbox-packs/sandbox-csv into .github/skills/sandbox-csv/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-csv", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add nodetool-ai/nodetool --skill sandbox-csv -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install nodetool-ai/nodetool sandbox-csv --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/nodetool-ai/nodetool.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/packages/sandbox-packs/sandbox-csv .opencode/skills/sandbox-csv && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "sandbox-csv" agent skill from https://github.com/nodetool-ai/nodetool/tree/main/packages/sandbox-packs/sandbox-csv into .opencode/skills/sandbox-csv/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-csv", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: sandbox-csv
GitHub stars: 560
Token cost: ~433 tokens
SKILL.md length: 171 words
Files: 2
Skills in repo: 127
Repo updated: Oct 9, 2026
First seen: Oct 7, 2026
Licence: AGPL-3.0

At a glance

Parse and write CSV in a Code node or CodeAct action, with papaparse running on the host behind a generated facade

Tasks that involve CSV and tabular files
SKILL.md covers parse — CSV text to records, stringify — records back to CSV and Gotchas
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Sandbox CSV is an agent skill from nodetool-ai/nodetool. Parse and write CSV in a Code node or CodeAct action, with papaparse running on the host behind a generated facade

Its SKILL.md is about 430 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `package.json`).

It sits in Documents & Office, covering CSV and tabular files. The repository describes itself as: Agent-first Creative Workspace. The licence is AGPL-3.0.

When your agent uses it

Tasks that involve CSV and tabular files

Example prompts

“/sandbox-csv”

What it can do on your machine

Read from SKILL.md and the folder at commit 58765d3. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are javascript).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Sandbox CSV loads about 433 tokens when it runs. Until then it costs about 32 tokens; SKILL.md has 171 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~32
When it runs · the whole SKILL.md, loaded when a task matches: ~433

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from nodetool-ai/nodetool at commit 58765d3, republished under its AGPL-3.0 licence (© nodetool-ai). 171 words, ~433 tokens.

Download SKILL.mdSave it as .claude/skills/sandbox-csv/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.

name: sandbox-csv
description: Parse and write CSV in a Code node or CodeAct action, with papaparse running on the host behind a generated facade

CSV in the sandbox

Specifier: @nodetool-ai/sandbox-csv. Import it at the top of the body.

papaparse imports node:stream, so it cannot be compiled into the guest. This pack is a host module: the import resolves to a generated facade whose two exports call NodeTool's own implementation. Both are async — a host call is a round trip.

parse — CSV text to records

import { parse } from "@nodetool-ai/sandbox-csv";

const rows = await parse(inputs.csv);           // records keyed by the header row
const raw = await parse(inputs.csv, { header: false });   // string[][]
return { count: rows.length, first: rows[0] ?? null };

Options: header (default true), delimiter (one character; omit to auto-detect).

Values stay strings. There is no dynamicTyping, so a column never changes shape between runs — convert what you need with Number() or new Date().

stringify — records back to CSV

import { stringify } from "@nodetool-ai/sandbox-csv";

const csv = await stringify(inputs.rows, { delimiter: ";" });
return { csv };

Takes records or row arrays. Options: header (default true), delimiter (exactly one character).

Gotchas

Every export is async. parse(...) without await gives you a Promise.
5 MB of text per call. Input over that is refused by name. Split a bigger file, or read it in slices with workspace.read.
Bounded concurrency still helps. Host calls start when invoked, so Promise.all over several parse calls runs them together; parallelMap is the bounded form.

Files

SKILL.md and 1 other file in packages/sandbox-packs/sandbox-csv of nodetool-ai/nodetool.

SKILL.md
package.json

Open the folder on GitHubat commit 58765d3

Compare with similar skills

Sandbox CSV next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Sandbox CSV compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Sandbox CSV this skillnodetool-ai/nodetool	560	—	~433	Automated safety check: Pass	AGPL-3.0	today
Data Table Managern8n-io/n8n	207k	—	~2.3k	Automated safety check: Pass	Custom licence	today
Instrument Data To Allotropeaws-samples/amazon-bedrock-agents-healthcare-lifesciences	274	2 repos	~2.7k	Automated safety check: Pass	Apache-2.0	7 days ago
Abuse Hunternexu-io/harness-engineering-guide	664	—	~1.9k	Automated safety check: Pass	MIT	5 mo ago
Markitshift-labs-ai/markit	1.3k	—	~299	Automated safety check: Pass	MIT	1 mo ago
Sector Analysttradermonty/claude-trading-skills	3k	1 repos	~2.3k	Automated safety check: Pass	MIT	3 days ago

Similar skills

Data Table Manager
n8n-io/n8n
Official
Load before calling data-tables or parse-file. An agent skill from n8n-io/n8n.
207k GitHub stars~2.3k tokensUpdated today
Documents & OfficeAuto-check passed
Instrument Data To Allotrope
aws-samples/amazon-bedrock-agents-healthcare-lifesciences
Official
Convert laboratory instrument output files (PDF, CSV, Excel, TXT) to Allotrope Simple Model (ASM) JSON format or flattened 2D CSV.
274 GitHub starsUsed in 2 repos~2.7k tokens
Documents & OfficeAuto-check passed
Abuse Hunter
nexu-io/harness-engineering-guide
Detect and investigate bulk registration abuse on SaaS platforms.
664 GitHub stars~1.9k tokensUpdated 5 mo ago
Documents & OfficeAuto-check passed
Markit
shift-labs-ai/markit
Convert files and URLs to Markdown. An agent skill from shift-labs-ai/markit.
1.3k GitHub stars~299 tokensUpdated 1 mo ago
Documents & OfficeAuto-check passed
Sector Analyst
tradermonty/claude-trading-skills
This skill should be used when analyzing sector rotation patterns and market cycle positioning.
3k GitHub starsUsed in 1 repo~2.3k tokens
Documents & OfficeAuto-check passed
Uap Release Analyzer
ckpxgfnksd-max/uap-release-analyzer
Inventory, extract, and analyze tranches of declassified UAP/UFO files — including war.gov/UFO/ "PURSUE" releases, FBI Vault, NARA boxes, and AARO publications.
155 GitHub stars~2.6k tokensUpdated 5 mo ago
Documents & OfficeAuto-check passed

More from nodetool-ai/nodetool

All 127 skills in this repo

Beat Sync Editing
nodetool-ai/nodetool
Cut a NodeTool timeline to music and shape its pacing — detect the beat grid, place cuts on phrases, pick a cut type, build speed ramps with time remap, and give the piece an arc.
560 GitHub stars~2.6k tokensUpdated today
Auto-check passed
Caption Titles
nodetool-ai/nodetool
Add and animate a consistent text layer on an existing NodeTool timeline.
560 GitHub stars~1.9k tokensUpdated today
Auto-check passed
Color Motion
nodetool-ai/nodetool
Choose and animate colour on a NodeTool timeline, including shape and text gradients, colour grades, 3D LUTs, and dither.
560 GitHub stars~2.3k tokensUpdated today
Auto-check passed
Commercial Beat Sheet
nodetool-ai/nodetool
Write a shootable, precisely timed commercial beat sheet and store it as a NodeTool storyboard, with a consistent entity roster behind every shot.
560 GitHub stars~4.6k tokensUpdated today
Auto-check passed
Elevenlabs Audio Prompting
nodetool-ai/nodetool
Direct ElevenLabs speech, dialogue, sound effects and music — the bracketed audio tags v3 acts on and why the voice decides whether a tag lands, stability as the delivery dial, punctuation instead…
560 GitHub stars~1.9k tokensUpdated today
Auto-check passed
Frame Composition
nodetool-ai/nodetool
Stage the frame on a NodeTool timeline — grids, focal placement, safe areas per aspect ratio, depth layers and parallax, camera moves, and where elements enter and leave.
560 GitHub stars~3.5k tokensUpdated today
Auto-check passed

Questions about Sandbox CSV

What does Sandbox CSV do?

Parse and write CSV in a Code node or CodeAct action, with papaparse running on the host behind a generated facade. Sandbox CSV is an agent skill from nodetool-ai/nodetool.

When should I use Sandbox CSV?

Sandbox CSV fits situations like: tasks that involve CSV and tabular files.

How do I install Sandbox CSV in Claude Code?

Run `npx skills add nodetool-ai/nodetool --skill sandbox-csv -a claude-code`. Or copy the skill folder (packages/sandbox-packs/sandbox-csv in nodetool-ai/nodetool) into .claude/skills/sandbox-csv in your project. Claude Code loads it when a task matches its description.

How do I install Sandbox CSV in Codex?

Run `npx skills add nodetool-ai/nodetool --skill sandbox-csv -a codex`. Or copy the skill folder (packages/sandbox-packs/sandbox-csv in nodetool-ai/nodetool) into .agents/skills/sandbox-csv in your project. Codex loads it when a task matches its description.

Can I use Sandbox CSV in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add nodetool-ai/nodetool --skill sandbox-csv -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/sandbox-csv, .gemini/skills/sandbox-csv, .github/skills/sandbox-csv and .opencode/skills/sandbox-csv in your project.

What does Sandbox CSV need to run?

SKILL.md names no scripts, command-line tools or credentials: Sandbox CSV is instructions for the agent only.

Does Sandbox CSV access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Sandbox CSV safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Sandbox CSV use?

Sandbox CSV is published under the AGPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Sandbox CSV use?

About 433 tokens (SKILL.md is roughly 1.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Sandbox CSV?

Skills that share tags, products or a category with Sandbox CSV: Data Table Manager (n8n-io/n8n, 207k stars), Instrument Data To Allotrope (aws-samples/amazon-bedrock-agents-healthcare-lifesciences, 274 stars), Abuse Hunter (nexu-io/harness-engineering-guide, 664 stars) and Markit (shift-labs-ai/markit, 1.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Sandbox CSV?

nodetool-ai (a GitHub organization) maintains it in nodetool-ai/nodetool, which has 560 GitHub stars. The repository holds 127 skills in this directory. The repository was last updated on October 9, 2026.

Source: nodetool-ai/nodetool on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Sandbox CSV

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

CSV in the sandbox

parse — CSV text to records

stringify — records back to CSV

Gotchas

Files

Compare with similar skills

Similar skills

More from nodetool-ai/nodetool

Related

Questions about Sandbox CSV