Web Application Testing
anthropics/skills
Tests local web applications with Python Playwright scripts, checking frontend behavior, capturing screenshots and reading browser console logs.
Guide users through creating and managing .satk/block-policy.json for controlling which blocks the agent can use, which are excluded, and which block parameters the agent should not modify.
Install Configuring Block Policy
$ npx skills add matlab/simulink-agentic-toolkit --skill configuring-block-policy -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install matlab/simulink-agentic-toolkit configuring-block-policy --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/matlab/simulink-agentic-toolkit.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills-catalog/model-based-design-core/configuring-block-policy .claude/skills/configuring-block-policy && 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 "configuring-block-policy" agent skill from https://github.com/matlab/simulink-agentic-toolkit/tree/main/skills-catalog/model-based-design-core/configuring-block-policy into .claude/skills/configuring-block-policy/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "configuring-block-policy", 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/matlab/simulink-agentic-toolkit/tree/main/skills-catalog/model-based-design-core/configuring-block-policyType 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 matlab/simulink-agentic-toolkit --skill configuring-block-policy -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install matlab/simulink-agentic-toolkit configuring-block-policy --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/matlab/simulink-agentic-toolkit.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills-catalog/model-based-design-core/configuring-block-policy .agents/skills/configuring-block-policy && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "configuring-block-policy" agent skill from https://github.com/matlab/simulink-agentic-toolkit/tree/main/skills-catalog/model-based-design-core/configuring-block-policy into .agents/skills/configuring-block-policy/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "configuring-block-policy", 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 matlab/simulink-agentic-toolkit --skill configuring-block-policy -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install matlab/simulink-agentic-toolkit configuring-block-policy --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/matlab/simulink-agentic-toolkit.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills-catalog/model-based-design-core/configuring-block-policy .cursor/skills/configuring-block-policy && 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 "configuring-block-policy" agent skill from https://github.com/matlab/simulink-agentic-toolkit/tree/main/skills-catalog/model-based-design-core/configuring-block-policy into .cursor/skills/configuring-block-policy/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "configuring-block-policy", 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/matlab/simulink-agentic-toolkit.git --path skills-catalog/model-based-design-core/configuring-block-policy--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 matlab/simulink-agentic-toolkit --skill configuring-block-policy -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install matlab/simulink-agentic-toolkit configuring-block-policy --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/matlab/simulink-agentic-toolkit.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills-catalog/model-based-design-core/configuring-block-policy .gemini/skills/configuring-block-policy && 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 "configuring-block-policy" agent skill from https://github.com/matlab/simulink-agentic-toolkit/tree/main/skills-catalog/model-based-design-core/configuring-block-policy into .gemini/skills/configuring-block-policy/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "configuring-block-policy", 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 matlab/simulink-agentic-toolkit configuring-block-policyInstalls 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 matlab/simulink-agentic-toolkit --skill configuring-block-policy -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/matlab/simulink-agentic-toolkit.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills-catalog/model-based-design-core/configuring-block-policy .github/skills/configuring-block-policy && 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 "configuring-block-policy" agent skill from https://github.com/matlab/simulink-agentic-toolkit/tree/main/skills-catalog/model-based-design-core/configuring-block-policy into .github/skills/configuring-block-policy/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "configuring-block-policy", 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 matlab/simulink-agentic-toolkit --skill configuring-block-policy -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install matlab/simulink-agentic-toolkit configuring-block-policy --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/matlab/simulink-agentic-toolkit.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills-catalog/model-based-design-core/configuring-block-policy .opencode/skills/configuring-block-policy && 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 "configuring-block-policy" agent skill from https://github.com/matlab/simulink-agentic-toolkit/tree/main/skills-catalog/model-based-design-core/configuring-block-policy into .opencode/skills/configuring-block-policy/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "configuring-block-policy", 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
configuring-block-policy- GitHub stars
- 1.2k
- Token cost
- ~959 tokens
- SKILL.md length
- 301 words
- Files
- 2
- Skills in repo
- 43
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Guide users through creating and managing .satk/block-policy.json for controlling which blocks the agent can use, which are excluded, and which block parameters the agent should not modify.
- Works in 5 steps: Check state — Does… → Policy mode — (skip if no libraries… → Excluded blocks (optional) — Are there… → …
- Setting up block usage policy for a project
- SKILL.md covers When to Use, When NOT to Use, Prerequisites and Workflow, plus 5 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Configuring Block Policy is an agent skill from matlab/simulink-agentic-toolkit. Guide users through creating and managing .satk/block-policy.json for controlling which blocks the agent can use, which are excluded, and which block parameters the agent should not modify. Use when setting up block usage policy for a project.
Its SKILL.md is about 960 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `manifest.yaml`).
It sits in Testing & QA. The repository describes itself as: The Simulink Agentic Toolkit gives your AI agent both the tools and the expertise to work effectively with Simulink and Model-Based Design.
When your agent uses it
- Setting up block usage policy for a project
Example prompts
- “/configuring-block-policy”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Check state — Does .satk/block-policy.json exist? If yes, load and summarize. If no, start fresh.
- Policy mode — (skip if no libraries specified) Ask: prefer libraries with built-in fallback, or custom libraries blocks only (no fallback)?
- Excluded blocks (optional) — Are there any blocks (library or built-in) that should never be placed in your models? Collect referenceBlock…
- Off-limits parameters (optional) — Are there any block parameters you don't want the agent to modify? Collect referenceBlock +…
- Save — Validate and write with library.BlockPolicy.save().
What it can do on your machine
Read from SKILL.md and the folder at commit c58e6ae. 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 matlab and json).
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
Configuring Block Policy loads about 959 tokens when it runs. Until then it costs about 67 tokens; SKILL.md has 301 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 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 301 words (~959 tokens).
“Create or update .satk/block-policy.json — the file that controls which blocks (library or built-in) the agent can use, which are excluded, and which block parameters the agent should not modify.”
- name
- configuring-block-policy
- license
- https://www.mathworks.com/content/dam/mathworks/license/pmrl/license.md
- metadata.author
- MathWorks
- metadata.version
- 1.1
Files
SKILL.md and 1 other file in skills-catalog/model-based-design-core/configuring-block-policy of matlab/simulink-agentic-toolkit.
- SKILL.md
- manifest.yaml
Open the folder on GitHubat commit c58e6ae
Compare with similar skills
Configuring Block Policy 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 |
|---|---|---|---|---|---|---|
| Configuring Block Policy this skillmatlab/simulink-agentic-toolkit | 1.2k | — | ~959 | Automated safety check: Pass | Custom licence | |
| Web Application Testinganthropics/skills | 180k | 51 repos | ~966 | Automated safety check: Pass | Apache-2.0 | |
| Diagnosing Bugsfossasia/eventyay-interpretation | 1.6k | 32 repos | ~2.1k | Automated safety check: Pass | Apache-2.0 | |
| TDDpietheinstrengholt/rssmonster | 564 | 30 repos | ~906 | Automated safety check: Pass | MIT | |
| TDD WorkflowhellangleZ/burn-in-cceverywhere-ralph | 112 | 11 repos | ~2.4k | Automated safety check: Pass | None | |
| TDDsanity-io/sanity | 6.4k | 20 repos | ~1k | Automated safety check: Pass | MIT |
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TDD
pietheinstrengholt/rssmonster
Test-driven development. An agent skill from pietheinstrengholt/rssmonster.
TDD Workflow
hellangleZ/burn-in-cceverywhere-ralph
A skill your agent uses when writing new features, fixing bugs, or refactoring code.
- Official
TDD
sanity-io/sanity
Test-driven development with red-green-refactor loop. An agent skill from sanity-io/sanity.
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Related
Categories
Questions about Configuring Block Policy
What does Configuring Block Policy do?
Guide users through creating and managing .satk/block-policy.json for controlling which blocks the agent can use, which are excluded, and which block parameters the agent should not modify. Configuring Block Policy is an agent skill from matlab/simulink-agentic-toolkit.json for controlling which blocks the agent can use, which are excluded, and which block parameters the agent should not modify.
When should I use Configuring Block Policy?
Configuring Block Policy fits situations like: setting up block usage policy for a project.
How do I install Configuring Block Policy in Claude Code?
Run `npx skills add matlab/simulink-agentic-toolkit --skill configuring-block-policy -a claude-code`. Or copy the skill folder (skills-catalog/model-based-design-core/configuring-block-policy in matlab/simulink-agentic-toolkit) into .claude/skills/configuring-block-policy in your project. Claude Code loads it when a task matches its description.
How do I install Configuring Block Policy in Codex?
Run `npx skills add matlab/simulink-agentic-toolkit --skill configuring-block-policy -a codex`. Or copy the skill folder (skills-catalog/model-based-design-core/configuring-block-policy in matlab/simulink-agentic-toolkit) into .agents/skills/configuring-block-policy in your project. Codex loads it when a task matches its description.
Can I use Configuring Block Policy 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 matlab/simulink-agentic-toolkit --skill configuring-block-policy -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/configuring-block-policy, .gemini/skills/configuring-block-policy, .github/skills/configuring-block-policy and .opencode/skills/configuring-block-policy in your project.
What does Configuring Block Policy need to run?
SKILL.md names no scripts, command-line tools or credentials: Configuring Block Policy is instructions for the agent only.
Does Configuring Block Policy 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 Configuring Block Policy 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 Configuring Block Policy use?
Configuring Block Policy has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Configuring Block Policy use?
About 959 tokens (SKILL.md is roughly 3.8k 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 Configuring Block Policy?
Skills that share tags, products or a category with Configuring Block Policy: Web Application Testing (anthropics/skills, 180k stars), Diagnosing Bugs (fossasia/eventyay-interpretation, 1.6k stars), TDD (pietheinstrengholt/rssmonster, 564 stars) and TDD Workflow (hellangleZ/burn-in-cceverywhere-ralph, 112 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Configuring Block Policy?
matlab (a GitHub organization) maintains it in matlab/simulink-agentic-toolkit, which has 1,199 GitHub stars. The repository holds 43 skills in this directory. The repository was last updated on October 7, 2026.
Source: matlab/simulink-agentic-toolkit on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.