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anthropics/skills
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Assert the work behaves by iterating the project's coding assertions until they pass, plus optional architecture and frontend facets.
Install 03 Assert
$ npx skills add ai-driven-dev/framework --skill 03-assert -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ai-driven-dev/framework 03-assert --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/ai-driven-dev/framework.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/aidd-dev/skills/03-assert .claude/skills/03-assert && 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 "03-assert" agent skill from https://github.com/ai-driven-dev/framework/tree/main/plugins/aidd-dev/skills/03-assert into .claude/skills/03-assert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "03-assert", 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/ai-driven-dev/framework/tree/main/plugins/aidd-dev/skills/03-assertType 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 ai-driven-dev/framework --skill 03-assert -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ai-driven-dev/framework 03-assert --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ai-driven-dev/framework.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/aidd-dev/skills/03-assert .agents/skills/03-assert && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "03-assert" agent skill from https://github.com/ai-driven-dev/framework/tree/main/plugins/aidd-dev/skills/03-assert into .agents/skills/03-assert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "03-assert", 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 ai-driven-dev/framework --skill 03-assert -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ai-driven-dev/framework 03-assert --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ai-driven-dev/framework.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/aidd-dev/skills/03-assert .cursor/skills/03-assert && 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 "03-assert" agent skill from https://github.com/ai-driven-dev/framework/tree/main/plugins/aidd-dev/skills/03-assert into .cursor/skills/03-assert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "03-assert", 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/ai-driven-dev/framework.git --path plugins/aidd-dev/skills/03-assert--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 ai-driven-dev/framework --skill 03-assert -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ai-driven-dev/framework 03-assert --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ai-driven-dev/framework.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/aidd-dev/skills/03-assert .gemini/skills/03-assert && 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 "03-assert" agent skill from https://github.com/ai-driven-dev/framework/tree/main/plugins/aidd-dev/skills/03-assert into .gemini/skills/03-assert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "03-assert", 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 ai-driven-dev/framework 03-assertInstalls 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 ai-driven-dev/framework --skill 03-assert -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/ai-driven-dev/framework.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/aidd-dev/skills/03-assert .github/skills/03-assert && 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 "03-assert" agent skill from https://github.com/ai-driven-dev/framework/tree/main/plugins/aidd-dev/skills/03-assert into .github/skills/03-assert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "03-assert", 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 ai-driven-dev/framework --skill 03-assert -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install ai-driven-dev/framework 03-assert --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ai-driven-dev/framework.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/aidd-dev/skills/03-assert .opencode/skills/03-assert && 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 "03-assert" agent skill from https://github.com/ai-driven-dev/framework/tree/main/plugins/aidd-dev/skills/03-assert into .opencode/skills/03-assert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "03-assert", 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
03-assert- GitHub stars
- 510
- Token cost
- ~429 tokens
- SKILL.md length
- 188 words
- Files
- 5 (incl. assets)
- Skills in repo
- 52
- Repo updated
- First seen
- Licence
- MIT
At a glance
Assert the work behaves by iterating the project's coding assertions until they pass, plus optional architecture and frontend facets.
- Validate an implementation
- SKILL.md covers Actions, Transversal rules and Assets
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
03 Assert is an agent skill from ai-driven-dev/framework. Assert the work behaves by iterating the project's coding assertions until they pass, plus optional architecture and frontend facets. Use to validate an implementation. Not for reviewing or writing tests.
Its SKILL.md is about 430 tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including assets (for example `actions/01-assert.md`, `actions/02-assert-architecture.md` and `actions/03-assert-frontend.md`).
It sits in Frontend & Design. The repository describes itself as: Marketplace Framework AI-Driven Dev : Context Engineering, Plugins, Agents, Skills, Hooks, Templates, SDLC. The licence is MIT.
When your agent uses it
- Validate an implementation
Example prompts
- “/03-assert”
What it can do on your machine
Read from SKILL.md and the folder at commit 6e30640. 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
03 Assert loads about 429 tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 188 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
The full file from ai-driven-dev/framework at commit 6e30640, republished under its MIT licence (© ai-driven-dev). 188 words, ~429 tokens.
Download SKILL.mdSave it as
.claude/skills/03-assert/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.- name
- 03-assert
- description
- Assert the work behaves by iterating the project's coding assertions until they pass, plus optional architecture and frontend facets. Use to validate an implementation. Not for reviewing or writing tests.
- argument-hint
- work | scope
- model
- sonnet
Skill: assert
Validate that the work behaves as intended: run the project's assertions, iterating and fixing until they pass.
Actions
| # | Action | Facet |
|---|---|---|
| 01 | assert | Run the project's coding assertions, fixing until they pass |
| 02 | assert-architecture | Report where the code breaks the documented architecture |
| 03 | assert-frontend | Inspect the running UI, fixing until the behavior is right |
Run every applicable facet by default, or one when named. Coding (01) always applies; add 03 when the work has a UI and a frontend is running, the facet resolving the URL itself; run 02 only when architecture conformance is asked for. Skip a facet whose precondition is absent, with a noted reason. Ask only when the intent is genuinely ambiguous.
Before running an action, read its file in actions/, not only the table or assets.
Transversal rules
- Gate: it returns a pass or fail verdict on the work.
- Fix loop: the coding and frontend facets fix and re-run until they pass. The architecture facet only reports, never fixes.
- Stop only when every selected assertion passes a final clean sweep.
Assets
assets/task-template.md: the tracking file the frontend facet fills across its fix loop.
© ai-driven-dev, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 4 other files (assets) in plugins/aidd-dev/skills/03-assert of ai-driven-dev/framework.
- SKILL.md
- actions/01-assert.md
- actions/02-assert-architecture.md
- actions/03-assert-frontend.md
- assets/task-template.md
Open the folder on GitHubat commit 6e30640
Compare with similar skills
03 Assert 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 |
|---|---|---|---|---|---|---|
| 03 Assert this skillai-driven-dev/framework | 510 | — | ~429 | Automated safety check: Pass | MIT | |
| Web Artifacts Builderanthropics/skills | 180k | 40 repos | ~769 | Automated safety check: Pass | Apache-2.0 | |
| React Doctormakeplane/plane | 60k | 12 repos | ~657 | Automated safety check: Pass | AGPL-3.0 | |
| React Composition Patternsvercel-labs/openreview | 1.7k | 58 repos | ~721 | Automated safety check: Pass | MIT | |
| Impeccablebestofjs/bestofjs | 3.1k | 27 repos | ~2.6k | Automated safety check: Pass | MIT | |
| Figma Design System Builderwarpdotdev/warp | 65k | 2 repos | ~4.4k | Automated safety check: Pass | AGPL-3.0 |
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Impeccable
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More from ai-driven-dev/framework
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Drive the async-dev pipeline from one entry point, whether setup, run, or review.
01 Plan
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Turn a request, ticket, or file into a phased implementation plan.
01 Sdlc
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Autonomously orchestrates a request from framing to a draft pull request, isolating implementation, independent review, and final outcome challenge.
02 Backlog
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Orchestrates a product backlog end to end. An agent skill from ai-driven-dev/framework.
00 Onboard
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Guide a project's journey through AIDD, from first setup to shipping a feature.
01 Acceptance QA
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Validate a reviewed candidate's observable behavior against its acceptance criteria and record short named videos as reviewer evidence.
Related
Categories
Questions about 03 Assert
What does 03 Assert do?
Assert the work behaves by iterating the project's coding assertions until they pass, plus optional architecture and frontend facets. 03 Assert is an agent skill from ai-driven-dev/framework. Assert the work behaves by iterating the project's coding assertions until they pass, plus optional architecture and frontend facets.
When should I use 03 Assert?
03 Assert fits situations like: validate an implementation.
How do I install 03 Assert in Claude Code?
Run `npx skills add ai-driven-dev/framework --skill 03-assert -a claude-code`. Or copy the skill folder (plugins/aidd-dev/skills/03-assert in ai-driven-dev/framework) into .claude/skills/03-assert in your project. Claude Code loads it when a task matches its description.
How do I install 03 Assert in Codex?
Run `npx skills add ai-driven-dev/framework --skill 03-assert -a codex`. Or copy the skill folder (plugins/aidd-dev/skills/03-assert in ai-driven-dev/framework) into .agents/skills/03-assert in your project. Codex loads it when a task matches its description.
Can I use 03 Assert 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 ai-driven-dev/framework --skill 03-assert -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/03-assert, .gemini/skills/03-assert, .github/skills/03-assert and .opencode/skills/03-assert in your project.
What does 03 Assert need to run?
SKILL.md names no scripts, command-line tools or credentials: 03 Assert is instructions for the agent only.
Does 03 Assert 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 03 Assert 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 03 Assert use?
03 Assert 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 03 Assert use?
About 429 tokens (SKILL.md is roughly 1.7k 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 03 Assert?
Skills that share tags, products or a category with 03 Assert: Web Artifacts Builder (anthropics/skills, 180k stars), React Doctor (makeplane/plane, 60k stars), React Composition Patterns (vercel-labs/openreview, 1.7k stars) and Impeccable (bestofjs/bestofjs, 3.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains 03 Assert?
ai-driven-dev (a GitHub organization) maintains it in ai-driven-dev/framework, which has 510 GitHub stars. The repository holds 52 skills in this directory. The repository was last updated on October 7, 2026.
Source: ai-driven-dev/framework on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.