Declarative Agents
github/awesome-copilot
Complete development kit for Microsoft 365 Copilot declarative agents with three comprehensive workflows (basic, advanced, validation), TypeSpec support, and Microsoft 365 Agents Toolkit integration
Apply after completing a task, before declaring done. An agent skill from cursor/plugins.
OfficialNo licenceAuto-check passed
Install Principle Prove It Works
$ npx skills add cursor/plugins --skill principle-prove-it-works -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install cursor/plugins principle-prove-it-works --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/cursor/plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/pstack/skills/principle-prove-it-works .claude/skills/principle-prove-it-works && 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 "principle-prove-it-works" agent skill from https://github.com/cursor/plugins/tree/main/pstack/skills/principle-prove-it-works into .claude/skills/principle-prove-it-works/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "principle-prove-it-works", 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/cursor/plugins/tree/main/pstack/skills/principle-prove-it-worksType 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 cursor/plugins --skill principle-prove-it-works -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install cursor/plugins principle-prove-it-works --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cursor/plugins.git skills-src && mkdir -p .agents/skills && cp -r skills-src/pstack/skills/principle-prove-it-works .agents/skills/principle-prove-it-works && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "principle-prove-it-works" agent skill from https://github.com/cursor/plugins/tree/main/pstack/skills/principle-prove-it-works into .agents/skills/principle-prove-it-works/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "principle-prove-it-works", 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 cursor/plugins --skill principle-prove-it-works -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install cursor/plugins principle-prove-it-works --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cursor/plugins.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/pstack/skills/principle-prove-it-works .cursor/skills/principle-prove-it-works && 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 "principle-prove-it-works" agent skill from https://github.com/cursor/plugins/tree/main/pstack/skills/principle-prove-it-works into .cursor/skills/principle-prove-it-works/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "principle-prove-it-works", 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/cursor/plugins.git --path pstack/skills/principle-prove-it-works--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 cursor/plugins --skill principle-prove-it-works -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install cursor/plugins principle-prove-it-works --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cursor/plugins.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/pstack/skills/principle-prove-it-works .gemini/skills/principle-prove-it-works && 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 "principle-prove-it-works" agent skill from https://github.com/cursor/plugins/tree/main/pstack/skills/principle-prove-it-works into .gemini/skills/principle-prove-it-works/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "principle-prove-it-works", 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 cursor/plugins principle-prove-it-worksInstalls 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 cursor/plugins --skill principle-prove-it-works -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/cursor/plugins.git skills-src && mkdir -p .github/skills && cp -r skills-src/pstack/skills/principle-prove-it-works .github/skills/principle-prove-it-works && 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 "principle-prove-it-works" agent skill from https://github.com/cursor/plugins/tree/main/pstack/skills/principle-prove-it-works into .github/skills/principle-prove-it-works/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "principle-prove-it-works", 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 cursor/plugins --skill principle-prove-it-works -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install cursor/plugins principle-prove-it-works --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cursor/plugins.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/pstack/skills/principle-prove-it-works .opencode/skills/principle-prove-it-works && 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 "principle-prove-it-works" agent skill from https://github.com/cursor/plugins/tree/main/pstack/skills/principle-prove-it-works into .opencode/skills/principle-prove-it-works/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "principle-prove-it-works", 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
principle-prove-it-works- GitHub stars
- 10k
- Used in
- 9 other repos
- Token cost
- ~343 tokens
- SKILL.md length
- 167 words
- Files
- 1
- Skills in repo
- 99
- Repo updated
- First seen
- Licence
- None found
At a glance
Apply after completing a task, before declaring done. An agent skill from cursor/plugins.
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Principle Prove It Works is an agent skill from cursor/plugins, published by the product's own GitHub organization. Apply after completing a task, before declaring done. Verify against the real artifact (run the feature, read the actual value, inspect the diff), not a proxy, self-report, or 'it compiles.'
Its SKILL.md is about 340 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: Cursor plugin specification and official plugins.
Example prompts
- “it compiles.”
- “/principle-prove-it-works”
What it can do on your machine
Read from SKILL.md and the folder at commit ccb5507. 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.
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
Principle Prove It Works loads about 343 tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 167 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
Without a licence we can't republish the file, so here is its outline and opening line. It has 167 words (~343 tokens).
“Verify every task output by checking the real thing directly. Do not infer from proxies, self-reports, or "it compiles."”
- name
- principle-prove-it-works
- disable-model-invocation
- true
Files
Just SKILL.md in pstack/skills/principle-prove-it-works of cursor/plugins.
Open the folder on GitHubat commit ccb5507
Used in 9 other repositories
We found 9 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 9 other GitHub owners. This page covers the copy in cursor/plugins, which our catalogue first saw on October 7, 2026.
- chmonitor/chmonitor.claude/skills/pstack/upstream/skills/principle-prove-it-works
- vvedantb/eva.claude/skills/principle-prove-it-works
- Sma1lboy/rove.agents/skills/pstack/skills/principle-prove-it-works
- michael-denyer/pstack-claudeplugins/pstack/skills/principle-prove-it-works
- backnotprop/pstackskills/principle-prove-it-works
- tellahq/opensession.agents/skills/pstack-suite/skills/principle-prove-it-works
- am-will/gooey-pi.agents/skills/pstack/principle-prove-it-works
- jtaroreh/agystackskills/principle-prove-it-works
- uzairansaruzi/p3-stackskills/principle-prove-it-works
Compare with similar skills
Principle Prove It Works 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 |
|---|---|---|---|---|---|---|
| Principle Prove It Works this skillcursor/plugins | 10k | 9 repos | ~343 | Automated safety check: Pass | None | |
| Declarative Agentsgithub/awesome-copilot | 40k | 1 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Uxui Principlessickn33/agentic-awesome-skills | 47k | 2 repos | ~548 | Automated safety check: Pass | MIT | |
| Verification Before CompletionjnMetaCode/superpowers-zh | 8.3k | — | ~443 | Automated safety check: Pass | MIT | |
| Verification Before Completionforyourhealth111-pixel/Vibe-Skills | 3.6k | — | ~1.1k | Automated safety check: Pass | Apache-2.0 | |
| Verification Before Completionfarm-fe/farm | 5.6k | 46 repos | ~1k | Automated safety check: Pass | MIT |
Similar skills
- Official
Uxui Principles
sickn33/agentic-awesome-skills
Evaluate interfaces against 168 research-backed UX/UI principles, detect antipatterns, and inject UX context into AI coding sessions.
Verification Before Completion
jnMetaCode/superpowers-zh
Chinese-language rule that bars an agent from claiming work is done, fixed or passing until it has run a verification command and read the output.
Verification Before Completion
foryourhealth111-pixel/Vibe-Skills
Completion-evidence route used before claiming work is complete, fixed, passing, committed, or PR-ready.
Verification Before Completion
farm-fe/farm
A skill your agent uses when about to claim work is complete, fixed, or passing, before committing or creating PRs - requires running verification commands and confirming output before making any…
Story Done
Donchitos/Claude-Code-Game-Studios
End-of-story completion review — verifies each acceptance criterion, checks GDD/ADR deviations, prompts code review, updates status.
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Code Design Rationale Investigator
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Digs into why code is shaped the way it is by checking git history, pull requests and connected tools in parallel, then reporting a cited read on the tradeoffs.
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Make PR Easy To Review
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Questions about Principle Prove It Works
What does Principle Prove It Works do?
Apply after completing a task, before declaring done. An agent skill from cursor/plugins. Principle Prove It Works is an agent skill from cursor/plugins, published by the product's own GitHub organization. Apply after completing a task, before declaring done.
How do I install Principle Prove It Works in Claude Code?
Run `npx skills add cursor/plugins --skill principle-prove-it-works -a claude-code`. Or copy the skill folder (pstack/skills/principle-prove-it-works in cursor/plugins) into .claude/skills/principle-prove-it-works in your project. Claude Code loads it when a task matches its description.
How do I install Principle Prove It Works in Codex?
Run `npx skills add cursor/plugins --skill principle-prove-it-works -a codex`. Or copy the skill folder (pstack/skills/principle-prove-it-works in cursor/plugins) into .agents/skills/principle-prove-it-works in your project. Codex loads it when a task matches its description.
Can I use Principle Prove It Works 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 cursor/plugins --skill principle-prove-it-works -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/principle-prove-it-works, .gemini/skills/principle-prove-it-works, .github/skills/principle-prove-it-works and .opencode/skills/principle-prove-it-works in your project.
What does Principle Prove It Works need to run?
SKILL.md names no scripts, command-line tools or credentials: Principle Prove It Works is instructions for the agent only.
Does Principle Prove It Works 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 Principle Prove It Works 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 Principle Prove It Works use?
No licence was found for Principle Prove It Works or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Principle Prove It Works use?
About 343 tokens (SKILL.md is roughly 1.4k 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 Principle Prove It Works?
Skills that share tags, products or a category with Principle Prove It Works: Declarative Agents (github/awesome-copilot, 40k stars), Uxui Principles (sickn33/agentic-awesome-skills, 47k stars), Verification Before Completion (jnMetaCode/superpowers-zh, 8.3k stars) and Verification Before Completion (foryourhealth111-pixel/Vibe-Skills, 3.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Principle Prove It Works?
cursor (a GitHub organization, an official publisher) maintains it in cursor/plugins, which has 10,457 GitHub stars. The repository holds 99 skills in this directory. The repository was last updated on October 8, 2026.
Source: cursor/plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.