MCP Server Builder
anthropics/skills
Guides the design and implementation of Model Context Protocol servers in TypeScript or Python, from tool naming and error messages to evaluation.
This skill should be used when the user asks to "add a constraint", "design a constraint", "write a harness rule", "choose enforcement type", "promote a constraint", "configure a verification slot"…
Install Constraint Design
$ npx skills add Habitat-Thinking/ai-literacy-superpowers --skill constraint-design -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Habitat-Thinking/ai-literacy-superpowers constraint-design --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/Habitat-Thinking/ai-literacy-superpowers.git skills-src && mkdir -p .claude/skills && cp -r skills-src/ai-literacy-superpowers/skills/constraint-design .claude/skills/constraint-design && 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 "constraint-design" agent skill from https://github.com/Habitat-Thinking/ai-literacy-superpowers/tree/main/ai-literacy-superpowers/skills/constraint-design into .claude/skills/constraint-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "constraint-design", 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/Habitat-Thinking/ai-literacy-superpowers/tree/main/ai-literacy-superpowers/skills/constraint-designType 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 Habitat-Thinking/ai-literacy-superpowers --skill constraint-design -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Habitat-Thinking/ai-literacy-superpowers constraint-design --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Habitat-Thinking/ai-literacy-superpowers.git skills-src && mkdir -p .agents/skills && cp -r skills-src/ai-literacy-superpowers/skills/constraint-design .agents/skills/constraint-design && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "constraint-design" agent skill from https://github.com/Habitat-Thinking/ai-literacy-superpowers/tree/main/ai-literacy-superpowers/skills/constraint-design into .agents/skills/constraint-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "constraint-design", 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 Habitat-Thinking/ai-literacy-superpowers --skill constraint-design -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Habitat-Thinking/ai-literacy-superpowers constraint-design --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Habitat-Thinking/ai-literacy-superpowers.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/ai-literacy-superpowers/skills/constraint-design .cursor/skills/constraint-design && 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 "constraint-design" agent skill from https://github.com/Habitat-Thinking/ai-literacy-superpowers/tree/main/ai-literacy-superpowers/skills/constraint-design into .cursor/skills/constraint-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "constraint-design", 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/Habitat-Thinking/ai-literacy-superpowers.git --path ai-literacy-superpowers/skills/constraint-design--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 Habitat-Thinking/ai-literacy-superpowers --skill constraint-design -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Habitat-Thinking/ai-literacy-superpowers constraint-design --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Habitat-Thinking/ai-literacy-superpowers.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/ai-literacy-superpowers/skills/constraint-design .gemini/skills/constraint-design && 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 "constraint-design" agent skill from https://github.com/Habitat-Thinking/ai-literacy-superpowers/tree/main/ai-literacy-superpowers/skills/constraint-design into .gemini/skills/constraint-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "constraint-design", 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 Habitat-Thinking/ai-literacy-superpowers constraint-designInstalls 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 Habitat-Thinking/ai-literacy-superpowers --skill constraint-design -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Habitat-Thinking/ai-literacy-superpowers.git skills-src && mkdir -p .github/skills && cp -r skills-src/ai-literacy-superpowers/skills/constraint-design .github/skills/constraint-design && 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 "constraint-design" agent skill from https://github.com/Habitat-Thinking/ai-literacy-superpowers/tree/main/ai-literacy-superpowers/skills/constraint-design into .github/skills/constraint-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "constraint-design", 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 Habitat-Thinking/ai-literacy-superpowers --skill constraint-design -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Habitat-Thinking/ai-literacy-superpowers constraint-design --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Habitat-Thinking/ai-literacy-superpowers.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/ai-literacy-superpowers/skills/constraint-design .opencode/skills/constraint-design && 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 "constraint-design" agent skill from https://github.com/Habitat-Thinking/ai-literacy-superpowers/tree/main/ai-literacy-superpowers/skills/constraint-design into .opencode/skills/constraint-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "constraint-design", 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
constraint-design- GitHub stars
- 114
- Token cost
- ~1.8k tokens
- SKILL.md length
- 867 words
- Files
- 2 (incl. references)
- Skills in repo
- 42
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
This skill should be used when the user asks to "add a constraint", "design a constraint", "write a harness rule", "choose enforcement type", "promote a constraint", "configure a verification slot"…
- Works in 3 steps: Describe what compliant code looks like → Describe what violating code looks like → Confirm a reviewer (human or agent)…
- Asks to add a constraint
- SKILL.md covers Anatomy of a Constraint, Writing a Verifiable Rule, Choosing Enforcement Type and Choosing Scope, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Constraint Design is an agent skill from Habitat-Thinking/ai-literacy-superpowers. This skill should be used when the user asks to "add a constraint", "design a constraint", "write a harness rule", "choose enforcement type", "promote a constraint", "configure a verification slot", or needs guidance on the Constraints section of HARNESS.md.
Its SKILL.md is about 1.8k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/promotion-ladder.md`).
It sits in Agent Workflows. The repository describes itself as: A set of Claude Code and GitHub Copilot plugins providing the AI Literacy framework's complete development workflow — harness engineering, agent orchestration, literate….
When your agent uses it
- Asks to add a constraint
- Design a constraint
- Write a harness rule
- Choose enforcement type
Example prompts
- “add a constraint”
- “design a constraint”
- “write a harness rule”
- “/constraint-design”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Describe what compliant code looks like
- Describe what violating code looks like
- Confirm a reviewer (human or agent) could check this without
What it can do on your machine
Read from SKILL.md and the folder at commit 9d35995. 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 markdown).
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
Constraint Design loads about 1.8k tokens when it runs, and up to ~2.8k if it reads all its reference files. Until then it costs about 69 tokens; SKILL.md has 867 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 867 words (~1,752 tokens).
“A constraint is a rule that must be enforced — not a suggestion, but a hard boundary. In the harness framework, each constraint occupies a verification slot that can be filled by either a deterministic tool or an agent-based review…”
- name
- constraint-design
Files
SKILL.md and 1 other file (references) in ai-literacy-superpowers/skills/constraint-design of Habitat-Thinking/ai-literacy-superpowers.
- SKILL.md
- references/promotion-ladder.md
Open the folder on GitHubat commit 9d35995
Compare with similar skills
Constraint Design 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 |
|---|---|---|---|---|---|---|
| Constraint Design this skillHabitat-Thinking/ai-literacy-superpowers | 114 | — | ~1.8k | Automated safety check: Pass | Custom licence | |
| MCP Server Builderanthropics/skills | 180k | 63 repos | ~2.3k | Automated safety check: Pass | Apache-2.0 | |
| Hook Development for Claude Code Pluginsanthropics/claude-plugins-official | 38k | 10 repos | ~4.1k | Automated safety check: Notes | Apache-2.0 | |
| Using Superpowersfarm-fe/farm | 5.6k | 35 repos | ~1.4k | Automated safety check: Pass | MIT | |
| Executing Plans Inlineobra/superpowers | 297k | 2 repos | ~5.1k | Automated safety check: Pass | MIT | |
| Skill CreatorAzure/azqr | 796 | 89 repos | ~8.2k | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Constraint Design
What does Constraint Design do?
This skill should be used when the user asks to "add a constraint", "design a constraint", "write a harness rule", "choose enforcement type", "promote a constraint", "configure a verification slot"…. Constraint Design is an agent skill from Habitat-Thinking/ai-literacy-superpowers.md.
When should I use Constraint Design?
Constraint Design fits situations like: asks to add a constraint; design a constraint; write a harness rule; choose enforcement type.
How do I install Constraint Design in Claude Code?
Run `npx skills add Habitat-Thinking/ai-literacy-superpowers --skill constraint-design -a claude-code`. Or copy the skill folder (ai-literacy-superpowers/skills/constraint-design in Habitat-Thinking/ai-literacy-superpowers) into .claude/skills/constraint-design in your project. Claude Code loads it when a task matches its description.
How do I install Constraint Design in Codex?
Run `npx skills add Habitat-Thinking/ai-literacy-superpowers --skill constraint-design -a codex`. Or copy the skill folder (ai-literacy-superpowers/skills/constraint-design in Habitat-Thinking/ai-literacy-superpowers) into .agents/skills/constraint-design in your project. Codex loads it when a task matches its description.
Can I use Constraint Design 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 Habitat-Thinking/ai-literacy-superpowers --skill constraint-design -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/constraint-design, .gemini/skills/constraint-design, .github/skills/constraint-design and .opencode/skills/constraint-design in your project.
What does Constraint Design need to run?
SKILL.md names no scripts, command-line tools or credentials: Constraint Design is instructions for the agent only.
Does Constraint Design 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 Constraint Design 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 Constraint Design use?
Constraint Design 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 Constraint Design use?
About 1.8k tokens (SKILL.md is roughly 7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1k tokens, read only when the agent opens those files.
What are the alternatives to Constraint Design?
Skills that share tags, products or a category with Constraint Design: MCP Server Builder (anthropics/skills, 180k stars), Hook Development for Claude Code Plugins (anthropics/claude-plugins-official, 38k stars), Using Superpowers (farm-fe/farm, 5.6k stars) and Executing Plans Inline (obra/superpowers, 297k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Constraint Design?
Habitat-Thinking (a GitHub organization) maintains it in Habitat-Thinking/ai-literacy-superpowers, which has 114 GitHub stars. The repository holds 42 skills in this directory. The repository was last updated on September 20, 2026.
Source: Habitat-Thinking/ai-literacy-superpowers on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.