HyperFrames Video Entry Point
heygen-com/hyperframes
Entry point for making, editing and rendering videos from HTML compositions with HyperFrames, routing each request to the right workflow.
Guidance for explicitly requested new tests and for updating or reviewing existing tests in the Remotion repository.
Install Writing Tests
$ npx skills add remotion-dev/remotion --skill writing-tests -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install remotion-dev/remotion writing-tests --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/remotion-dev/remotion.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/writing-tests .claude/skills/writing-tests && 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 "writing-tests" agent skill from https://github.com/remotion-dev/remotion/tree/main/.agents/skills/writing-tests into .claude/skills/writing-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-tests", 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/remotion-dev/remotion/tree/main/.agents/skills/writing-testsType 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 remotion-dev/remotion --skill writing-tests -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install remotion-dev/remotion writing-tests --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/remotion-dev/remotion.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/writing-tests .agents/skills/writing-tests && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "writing-tests" agent skill from https://github.com/remotion-dev/remotion/tree/main/.agents/skills/writing-tests into .agents/skills/writing-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-tests", 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 remotion-dev/remotion --skill writing-tests -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install remotion-dev/remotion writing-tests --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/remotion-dev/remotion.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/writing-tests .cursor/skills/writing-tests && 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 "writing-tests" agent skill from https://github.com/remotion-dev/remotion/tree/main/.agents/skills/writing-tests into .cursor/skills/writing-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-tests", 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/remotion-dev/remotion.git --path .agents/skills/writing-tests--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 remotion-dev/remotion --skill writing-tests -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install remotion-dev/remotion writing-tests --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/remotion-dev/remotion.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/writing-tests .gemini/skills/writing-tests && 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 "writing-tests" agent skill from https://github.com/remotion-dev/remotion/tree/main/.agents/skills/writing-tests into .gemini/skills/writing-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-tests", 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 remotion-dev/remotion writing-testsInstalls 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 remotion-dev/remotion --skill writing-tests -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/remotion-dev/remotion.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/writing-tests .github/skills/writing-tests && 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 "writing-tests" agent skill from https://github.com/remotion-dev/remotion/tree/main/.agents/skills/writing-tests into .github/skills/writing-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-tests", 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 remotion-dev/remotion --skill writing-tests -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install remotion-dev/remotion writing-tests --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/remotion-dev/remotion.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/writing-tests .opencode/skills/writing-tests && 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 "writing-tests" agent skill from https://github.com/remotion-dev/remotion/tree/main/.agents/skills/writing-tests into .opencode/skills/writing-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-tests", 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
writing-tests- GitHub stars
- 62k
- Token cost
- ~3.5k tokens
- SKILL.md length
- 1,797 words
- Files
- 1
- Skills in repo
- 71
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Guidance for explicitly requested new tests and for updating or reviewing existing tests in the Remotion repository.
- Works in 5 steps: What failure would a user or public API… → What is the widest stable boundary that… → Is there an existing integration or E2E… → …
- Tasks that involve Video production
- SKILL.md covers Choose the boundary before…, Assert contracts and outcomes, Studio and product UI tests and Use real owned collaborators, plus 7 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Writing Tests is an agent skill from remotion-dev/remotion, published by the product's own GitHub organization. Guidance for explicitly requested new tests and for updating or reviewing existing tests in the Remotion repository.
Its SKILL.md is about 3.5k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Media & Creative, covering Video production. It works with Remotion. The repository describes itself as: 🎥 Make videos programmatically with React.
When your agent uses it
- Tasks that involve Video production
Example prompts
- “/writing-tests”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- What failure would a user or public API consumer notice?
- What is the widest stable boundary that can reproduce it economically?
- Is there an existing integration or E2E workflow that can be extended?
- Would the proposed test fail if the feature entry point stopped calling the tested helper?
- Which edge cases, if any, still justify focused unit tests?
What it can do on your machine
Read from SKILL.md and the folder at commit 1e4c5de. 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 typescript).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
kentcdodds.com
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
Writing Tests loads about 3.5k tokens when it runs. Until then it costs about 33 tokens; SKILL.md has 1,797 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 1,797 words (~3,498 tokens).
“Apply this skill when the user explicitly requests new tests or when existing tests, fixtures, or snapshots need updates for feature work, bug fixes, refactors, or PR preparation. Do not add new tests, including new test cases in existing files…”
- name
- writing-tests
Files
Just SKILL.md in .agents/skills/writing-tests of remotion-dev/remotion.
Open the folder on GitHubat commit 1e4c5de
Compare with similar skills
Writing Tests 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 |
|---|---|---|---|---|---|---|
| Writing Tests this skillremotion-dev/remotion | 62k | — | ~3.5k | Automated safety check: Pass | Custom licence | |
| HyperFrames Video Entry Pointheygen-com/hyperframes | 58k | 3 repos | ~5.2k | Automated safety check: Pass | Apache-2.0 | |
| Create Remotion GeistMarve10s/Better-Fullstack | 752 | — | ~1.4k | Automated safety check: Pass | MIT | |
| Playwright Browser Demo Recordingdigitalsamba/claude-code-video-toolkit | 2.2k | 1 repos | ~3.2k | Automated safety check: Pass | MIT | |
| Eva Feature Screenshotvvedantb/eva | 101 | — | ~3.2k | Automated safety check: Notes | MIT | |
| Remotion Toolkit Extensionsdigitalsamba/claude-code-video-toolkit | 2.2k | 1 repos | ~1.5k | Automated safety check: Pass | MIT |
Similar skills
Create Remotion Geist
Marve10s/Better-Fullstack
Create Remotion videos using the Geist design system aesthetic.
Playwright Browser Demo Recording
digitalsamba/claude-code-video-toolkit
Records browser interactions as video with Playwright, covering viewport sizing, cursor highlighting, and converting output for Remotion.
Eva Feature Screenshot
vvedantb/eva
Grab a single clean HD screenshot of a new eva feature from the real running app (Playwright at deviceScaleFactor 2, 1280 layout captured crisp at 2560×1440, dev overlays hidden) and write a tweet…
Remotion Toolkit Extensions
digitalsamba/claude-code-video-toolkit
Toolkit-specific Remotion pieces for video projects: shared scene components, custom transitions such as glitch and light leak, and project conventions beside the official skill.
Skill Authoring
notivn/AIEV
The standard for writing new skills for the AI Edit Video system - file structure, frontmatter, tone of voice, and how to accumulate production lessons into skills.
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Related
Works with
Categories
Questions about Writing Tests
What does Writing Tests do?
Guidance for explicitly requested new tests and for updating or reviewing existing tests in the Remotion repository. Writing Tests is an agent skill from remotion-dev/remotion, published by the product's own GitHub organization. Guidance for explicitly requested new tests and for updating or reviewing existing tests in the Remotion repository.
When should I use Writing Tests?
Writing Tests fits situations like: tasks that involve Video production.
How do I install Writing Tests in Claude Code?
Run `npx skills add remotion-dev/remotion --skill writing-tests -a claude-code`. Or copy the skill folder (.agents/skills/writing-tests in remotion-dev/remotion) into .claude/skills/writing-tests in your project. Claude Code loads it when a task matches its description.
How do I install Writing Tests in Codex?
Run `npx skills add remotion-dev/remotion --skill writing-tests -a codex`. Or copy the skill folder (.agents/skills/writing-tests in remotion-dev/remotion) into .agents/skills/writing-tests in your project. Codex loads it when a task matches its description.
Can I use Writing Tests 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 remotion-dev/remotion --skill writing-tests -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/writing-tests, .gemini/skills/writing-tests, .github/skills/writing-tests and .opencode/skills/writing-tests in your project.
What does Writing Tests need to run?
SKILL.md names no scripts, command-line tools or credentials: Writing Tests is instructions for the agent only.
Does Writing Tests access the network?
SKILL.md names 1 domain. As links in the text: kentcdodds.com. This is read from the text; nothing was executed.
Is Writing Tests 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 Writing Tests use?
Writing Tests 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 Writing Tests use?
About 3.5k tokens (SKILL.md is roughly 14k 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 Writing Tests?
Skills that share tags, products or a category with Writing Tests: HyperFrames Video Entry Point (heygen-com/hyperframes, 58k stars), Create Remotion Geist (Marve10s/Better-Fullstack, 752 stars), Playwright Browser Demo Recording (digitalsamba/claude-code-video-toolkit, 2.2k stars) and Eva Feature Screenshot (vvedantb/eva, 101 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Writing Tests?
remotion-dev (a GitHub organization, an official publisher) maintains it in remotion-dev/remotion, which has 62,235 GitHub stars. The repository holds 71 skills in this directory. The repository was last updated on October 7, 2026.
Source: remotion-dev/remotion on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.