Block Kit
openclaw/openclaw
Use proactively for structured or interactive Slack replies, and when asked to author or validate native Slack Block Kit JSON.
A skill with code blocks and imperative instructions for testing content and contamination analysis.
MITAuto-check: notes
Install Rich Skill
$ npx skills add agent-ecosystem/skill-validator --skill rich-skill -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install agent-ecosystem/skill-validator rich-skill --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/agent-ecosystem/skill-validator.git skills-src && mkdir -p .claude/skills && cp -r skills-src/testdata/rich-skill .claude/skills/rich-skill && rm -rf skills-srcUse ~/.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/
Install the "rich-skill" agent skill from https://github.com/agent-ecosystem/skill-validator/tree/main/testdata/rich-skill into .claude/skills/rich-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rich-skill", 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 install https://github.com/agent-ecosystem/skill-validator/tree/main/testdata/rich-skillType 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.
$ npx skills add agent-ecosystem/skill-validator --skill rich-skill -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install agent-ecosystem/skill-validator rich-skill --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/agent-ecosystem/skill-validator.git skills-src && mkdir -p .agents/skills && cp -r skills-src/testdata/rich-skill .agents/skills/rich-skill && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "rich-skill" agent skill from https://github.com/agent-ecosystem/skill-validator/tree/main/testdata/rich-skill into .agents/skills/rich-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rich-skill", 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.
$ npx skills add agent-ecosystem/skill-validator --skill rich-skill -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install agent-ecosystem/skill-validator rich-skill --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/agent-ecosystem/skill-validator.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/testdata/rich-skill .cursor/skills/rich-skill && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "rich-skill" agent skill from https://github.com/agent-ecosystem/skill-validator/tree/main/testdata/rich-skill into .cursor/skills/rich-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rich-skill", 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 https://github.com/agent-ecosystem/skill-validator.git --path testdata/rich-skill--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add agent-ecosystem/skill-validator --skill rich-skill -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install agent-ecosystem/skill-validator rich-skill --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/agent-ecosystem/skill-validator.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/testdata/rich-skill .gemini/skills/rich-skill && rm -rf skills-srcUse ~/.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/
Install the "rich-skill" agent skill from https://github.com/agent-ecosystem/skill-validator/tree/main/testdata/rich-skill into .gemini/skills/rich-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rich-skill", 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.
$ gh skill install agent-ecosystem/skill-validator rich-skillInstalls 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).
$ npx skills add agent-ecosystem/skill-validator --skill rich-skill -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/agent-ecosystem/skill-validator.git skills-src && mkdir -p .github/skills && cp -r skills-src/testdata/rich-skill .github/skills/rich-skill && rm -rf skills-srcUse ~/.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/
Install the "rich-skill" agent skill from https://github.com/agent-ecosystem/skill-validator/tree/main/testdata/rich-skill into .github/skills/rich-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rich-skill", 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.
$ npx skills add agent-ecosystem/skill-validator --skill rich-skill -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install agent-ecosystem/skill-validator rich-skill --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/agent-ecosystem/skill-validator.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/testdata/rich-skill .opencode/skills/rich-skill && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "rich-skill" agent skill from https://github.com/agent-ecosystem/skill-validator/tree/main/testdata/rich-skill into .opencode/skills/rich-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rich-skill", 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
rich-skill- GitHub stars
- 255
- Token cost
- ~288 tokens
- SKILL.md length
- 99 words
- Files
- 1
- Skills in repo
- 4
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill with code blocks and imperative instructions for testing content and contamination analysis.
- SKILL.md covers Setup, Usage and Configuration
- Calls npm and pip
What it does
Rich Skill is an agent skill from agent-ecosystem/skill-validator. A skill with code blocks and imperative instructions for testing content and contamination analysis.
Its SKILL.md is about 290 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: Validate Skill content against Agent Skill specification, with additional content density and quality checks. The licence is MIT.
Example prompts
- “/rich-skill”
Requirements
- Python 3
- Node.js
What it can do on your machine
Read from SKILL.md and the folder at commit 08e2f74. 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
Shell commands in SKILL.md call:
npmpip
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npm and pip, which can reach the network depending on how they are called.
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
Rich Skill loads about 288 tokens when it runs. Until then it costs about 28 tokens; SKILL.md has 99 words of instructions outside code blocks.
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: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NoteMentions a .env fileSKILL.md:40
ent variables. You may consider using a `.env` file.
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 agent-ecosystem/skill-validator at commit 08e2f74, republished under its MIT licence (© agent-ecosystem). 99 words, ~288 tokens.
Download SKILL.mdSave it as
.claude/skills/rich-skill/SKILL.md (or your agent's skills folder).- name
- rich-skill
- description
- A skill with code blocks and imperative instructions for testing content and contamination analysis.
Rich Skill
You must always follow these instructions. Never skip validation steps.
Setup
Use the CLI to configure your environment. Install the required dependencies.
npm install mongodb
pip install pymongoconst { MongoClient } = require('mongodb');
const client = new MongoClient('mongodb://localhost:27017');from pymongo import MongoClient
client = MongoClient('mongodb://localhost:27017')Usage
Create a new database connection. Ensure the connection string is valid. Run the tests before deploying. Check that all queries return expected results.
- Step 1: Configure the connection
- Step 2: Run migrations
- Step 3: Validate the schema
- Step 4: Deploy
Configuration
Set the following environment variables. You may consider using a .env file.
It could simplify local development. This is optional but suggested.
database:
host: localhost
port: 27017Build the project with Node.js or Django depending on your stack.
© agent-ecosystem, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in testdata/rich-skill of agent-ecosystem/skill-validator.
Open the folder on GitHubat commit 08e2f74
Compare with similar skills
Rich Skill 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Rich Skill this skillagent-ecosystem/skill-validator | 255 | — | ~288 | Automated safety check: Notes | MIT | |
| Block Kitopenclaw/openclaw | 392k | — | ~624 | Automated safety check: Pass | MIT | |
| Render Blockingthedaviddias/Front-End-Checklist | 74k | — | ~430 | Automated safety check: Pass | MIT | |
| Blocking IO Guardbytedance/deer-flow | 83k | — | ~1.7k | Automated safety check: Pass | MIT | |
| Color Blockingsickn33/agentic-awesome-skills | 47k | 1 repos | ~2.4k | Automated safety check: Pass | MIT | |
| Add Block Previewsimstudioai/sim | 30k | — | ~1.3k | Automated safety check: Pass | Apache-2.0 |
Similar skills
Render Blocking
thedaviddias/Front-End-Checklist
A skill your agent uses when auditing slow page loads, heavy assets, or rendering delays related to Eliminate render-blocking resources.
Blocking IO Guard
bytedance/deer-flow
Adds a runtime test anchor for backend async code that could block the asyncio event loop, and proves the anchor fails when the blocking call returns.
Color Blocking
sickn33/agentic-awesome-skills
Web and App implementation guide for Color Blocking. An agent skill from sickn33/agentic-awesome-skills.
Add Block Preview
simstudioai/sim
Gate a block's visibility — ship an unreleased block as a preview (hidden until revealed via AppConfig/env), reveal it to admins/orgs, GA it, or kill-switch a shipped block
Add Block
simstudioai/sim
Create or update a Sim integration block with correct subBlocks, conditions, dependsOn, modes, canonicalParamId usage, outputs, and tool wiring.
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Auxiliary Only Skill
agent-ecosystem/skill-validator
A skill that uses only shell and config code blocks for testing contamination.
Allowed Dirs Skill
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A skill with development directories that require --allow-dirs.
Questions about Rich Skill
What does Rich Skill do?
A skill with code blocks and imperative instructions for testing content and contamination analysis. Rich Skill is an agent skill from agent-ecosystem/skill-validator. A skill with code blocks and imperative instructions for testing content and contamination analysis.
How do I install Rich Skill in Claude Code?
Run `npx skills add agent-ecosystem/skill-validator --skill rich-skill -a claude-code`. Or copy the skill folder (testdata/rich-skill in agent-ecosystem/skill-validator) into .claude/skills/rich-skill in your project. Claude Code loads it when a task matches its description.
How do I install Rich Skill in Codex?
Run `npx skills add agent-ecosystem/skill-validator --skill rich-skill -a codex`. Or copy the skill folder (testdata/rich-skill in agent-ecosystem/skill-validator) into .agents/skills/rich-skill in your project. Codex loads it when a task matches its description.
Can I use Rich Skill 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 agent-ecosystem/skill-validator --skill rich-skill -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/rich-skill, .gemini/skills/rich-skill, .github/skills/rich-skill and .opencode/skills/rich-skill in your project.
What does Rich Skill need to run?
Going by SKILL.md and its folder, Rich Skill needs the command-line tools its instructions call (npm and pip). Our summary lists: Python 3; Node.js.
Does Rich Skill access the network?
SKILL.md contains no URLs. Its commands use npm and pip, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Rich Skill safe to install?
Our automated static check of SKILL.md found notes only (mentions a .env file), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Rich Skill use?
Rich Skill is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Rich Skill use?
About 288 tokens (SKILL.md is roughly 1.2k 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 Rich Skill?
Skills that share tags, products or a category with Rich Skill: Block Kit (openclaw/openclaw, 392k stars), Render Blocking (thedaviddias/Front-End-Checklist, 74k stars), Blocking IO Guard (bytedance/deer-flow, 83k stars) and Color Blocking (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Rich Skill?
agent-ecosystem (a GitHub organization) maintains it in agent-ecosystem/skill-validator, which has 255 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on September 20, 2026.
Source: agent-ecosystem/skill-validator on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.