Validate Data skill
Review an analysis before you share it, with checks for errors, bias and a clear confidence rating.
A Free skill. Sign-in opens soon.
- By
- Anthropic
- Licence
- Apache-2.0
- Installs
- 3.6K
- Works in
- 17 apps
What Validate Data makes
Validate Data is a second pair of eyes. You hand it a report, a spreadsheet, some SQL and its results, or even a description of your method. It checks whether the question was the right one, the data was suitable and the conclusions are really supported.
It runs a pre-delivery checklist, looks for common traps such as a join that multiplies rows, survivorship bias, comparing a part-month with a full month, and averages of averages, and spot-checks calculations. You get a report with issues ranked by severity and a verdict.
Best for: Anyone about to present numbers to others who wants a careful check first.
- Verdict in three levels: ready to share, share with caveats, needs revision
- Checklists for data quality, calculations, reasonableness and presentation
- Catalogue of pitfalls: join explosion, survivorship bias, incomplete periods, shifting denominators, timezone mismatches, selection bias
- Recalculates key numbers and checks that totals and percentages add up
- Lists the caveats stakeholders must be told
Example prompts
Type something like this once the skill is added. Your app opens the skill when the request matches.
-
/validate-data Check this quarterly revenue analysis before I send it to the board
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/validate-data Here is my SQL and the numbers it gave. Does anything look wrong?
-
Review the charts in this deck. Do they match the underlying data?
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Is it fair to say our churn fell, based on this sheet?
What’s inside
3 files in the skill folder, with its Apache-2.0 licence kept inside. Only text instructions and reference files, no program files.
- SKILL.md the instructions
- upstream-notices/ 1 files
- LICENSE licence
Which apps it works in
A skill is a folder of plain files, so any app that reads the open skills format can use it. Pick your app for its page.
How to add Validate Data to your app
Step by step for each app. We say where to click, so you never need to leave this page.
ChatGPTby OpenAI
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Open the ChatGPT desktop app and look for Skills in the sidebar, where standalone skills are listed.
- 3 Add the “validate-data” folder there if your version offers it. If you do not see Skills yet, use this skill in Claude or Codex instead.
- 4 In a chat, type @ and pick the skill, or just ask. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
To make your own, describe the workflow to @skill-creator in ChatGPT Work and it drafts a skill for you.
Claude appby Anthropic
- 1 Download the skill (.zip) with the button at the top of this page.
- 2 In the Claude app, open Settings > Features.
- 3 Upload the .zip file.
- 4 Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
The current Claude Help Center lists Free, Pro, Max, Team and Enterprise. Organization policy can restrict uploads and sharing. Chat runs code in an isolated environment; uploading a skill does not give it your local project, coding-agent tools or unrestricted network access.
Codexby OpenAI
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the “validate-data” folder into your skills folder:
~/.agents/skills - 3 Or paste the install prompt below into Codex and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
Install prompt: paste this into Codex
I downloaded the agent skill "Validate Data" as validate-data.zip. Unzip it and copy the validate-data folder into ~/.agents/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .agents/skills inside that project instead.
Claude Codeby Anthropic
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the “validate-data” folder into your skills folder:
~/.claude/skills - 3 Or paste the install prompt below into Claude Code and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
Install prompt: paste this into Claude Code
I downloaded the agent skill "Validate Data" as validate-data.zip. Unzip it and copy the validate-data folder into ~/.claude/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
Built-in installer: claude plugin marketplace add <owner/repo>
Built-in installer: claude plugin install <plugin>@<marketplace>
To use the skill in one project only, put it in .claude/skills inside that project instead.
Cursor
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the “validate-data” folder into your skills folder:
~/.cursor/skills - 3 Or paste the install prompt below into Cursor and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
Install prompt: paste this into Cursor
I downloaded the agent skill "Validate Data" as validate-data.zip. Unzip it and copy the validate-data folder into ~/.cursor/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .cursor/skills inside that project instead. Cursor also reads ~/.agents/skills, ~/.claude/skills, ~/.codex/skills.
GitHub Copilotby GitHub
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the “validate-data” folder into your skills folder:
~/.copilot/skills - 3 Or paste the install prompt below into GitHub Copilot and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
Install prompt: paste this into GitHub Copilot
I downloaded the agent skill "Validate Data" as validate-data.zip. Unzip it and copy the validate-data folder into ~/.copilot/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
Built-in installer: gh skill install <owner/repo> <skill> --agent github-copilot --scope user
To use the skill in one project only, put it in .github/skills inside that project instead. GitHub Copilot also reads ~/.agents/skills.
Gemini CLIby Google
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the “validate-data” folder into your skills folder:
~/.gemini/skills - 3 Or paste the install prompt below into Gemini CLI and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
Install prompt: paste this into Gemini CLI
I downloaded the agent skill "Validate Data" as validate-data.zip. Unzip it and copy the validate-data folder into ~/.gemini/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
Built-in installer: gemini skills install <git-url>
To use the skill in one project only, put it in .gemini/skills inside that project instead. Gemini CLI also reads ~/.agents/skills.
Windsurf
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the “validate-data” folder into your skills folder:
~/.codeium/windsurf/skills - 3 Or paste the install prompt below into Windsurf and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
Install prompt: paste this into Windsurf
I downloaded the agent skill "Validate Data" as validate-data.zip. Unzip it and copy the validate-data folder into ~/.codeium/windsurf/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .windsurf/skills inside that project instead.
Kiro
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the “validate-data” folder into your skills folder:
~/.kiro/skills - 3 Or paste the install prompt below into Kiro and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
Install prompt: paste this into Kiro
I downloaded the agent skill "Validate Data" as validate-data.zip. Unzip it and copy the validate-data folder into ~/.kiro/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .kiro/skills inside that project instead.
Antigravityby Google
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the “validate-data” folder into your skills folder:
~/.gemini/antigravity/skills - 3 Or paste the install prompt below into Antigravity and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
Install prompt: paste this into Antigravity
I downloaded the agent skill "Validate Data" as validate-data.zip. Unzip it and copy the validate-data folder into ~/.gemini/antigravity/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .agents/skills inside that project instead.
OpenCode
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the “validate-data” folder into your skills folder:
~/.config/opencode/skills - 3 Or paste the install prompt below into OpenCode and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
Install prompt: paste this into OpenCode
I downloaded the agent skill "Validate Data" as validate-data.zip. Unzip it and copy the validate-data folder into ~/.config/opencode/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .opencode/skills inside that project instead. OpenCode also reads ~/.agents/skills, ~/.claude/skills.
Cline
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the “validate-data” folder into your skills folder:
~/.agents/skills - 3 Or paste the install prompt below into Cline and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
Install prompt: paste this into Cline
I downloaded the agent skill "Validate Data" as validate-data.zip. Unzip it and copy the validate-data folder into ~/.agents/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .agents/skills inside that project instead.
Amp
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the “validate-data” folder into your skills folder:
~/.config/agents/skills - 3 Or paste the install prompt below into Amp and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
Install prompt: paste this into Amp
I downloaded the agent skill "Validate Data" as validate-data.zip. Unzip it and copy the validate-data folder into ~/.config/agents/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
Built-in installer: amp skill add <github-url> --global
To use the skill in one project only, put it in .agents/skills inside that project instead. Amp also reads ~/.agents/skills, ~/.config/amp/skills, ~/.claude/skills.
Gooseby Block
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the “validate-data” folder into your skills folder:
~/.agents/skills - 3 Or paste the install prompt below into Goose and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
Install prompt: paste this into Goose
I downloaded the agent skill "Validate Data" as validate-data.zip. Unzip it and copy the validate-data folder into ~/.agents/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .agents/skills inside that project instead. Goose also reads ~/.claude/skills.
OpenClaw
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the “validate-data” folder into your skills folder:
~/.openclaw/skills - 3 Or paste the install prompt below into OpenClaw and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
Install prompt: paste this into OpenClaw
I downloaded the agent skill "Validate Data" as validate-data.zip. Unzip it and copy the validate-data folder into ~/.openclaw/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
Built-in installer: openclaw skills install @owner/<slug>
Built-in installer: openclaw skills install @owner/<slug> --global
Built-in installer: openclaw skills install git:owner/repo@ref
To use the skill in one project only, put it in skills inside that project instead. OpenClaw also reads ~/.agents/skills.
Hermes Agentby Nous Research
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the “validate-data” folder into your skills folder:
~/.hermes/skills - 3 Or paste the install prompt below into Hermes Agent and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
Install prompt: paste this into Hermes Agent
I downloaded the agent skill "Validate Data" as validate-data.zip. Unzip it and copy the validate-data folder into ~/.hermes/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
Built-in installer: hermes skills install <owner/repo/skill>
VS Codeby Microsoft
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the “validate-data” folder into your skills folder:
~/.copilot/skills - 3 Or paste the install prompt below into VS Code and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “/validate-data Check this quarterly revenue analysis before I send it to the board”
Install prompt: paste this into VS Code
I downloaded the agent skill "Validate Data" as validate-data.zip. Unzip it and copy the validate-data folder into ~/.copilot/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .github/skills inside that project instead. VS Code also reads ~/.claude/skills, ~/.agents/skills.
Questions about Validate Data
What does the output look like?
A validation report with an overall assessment, methodology review, issues found with severity, calculation spot-checks, suggested improvements and required caveats.
Can it review charts?
Yes. The skill has a step for assessing visualizations and the story told around them.
Does it prove my analysis is right?
No. It is a structured review that finds problems and states a confidence level. You still decide what to share.
Is the Validate Data skill free?
Yes. It is a Free skill on Best Agent Skills. Sign-in opens soon; when it does, a free account is all you need to download it.
Who made the Validate Data skill?
Anthropic. We did not write it. Best Agent Skills curates skills like this one, explains them in plain words and shows how to add them to your app. It is shared under the Apache-2.0 licence (Copyright [yyyy] [name of copyright owner]).
