Brainstorming
xpinjection/test-driven-spring-boot
You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior.
Read these rules whenever you add, modify, or review bind methods (e.g.
No licenceAuto-check passed
Install Signal Rules
$ npx skills add vaadin/flow-components --skill signal-rules -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install vaadin/flow-components signal-rules --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/vaadin/flow-components.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/signal-rules .claude/skills/signal-rules && 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 "signal-rules" agent skill from https://github.com/vaadin/flow-components/tree/main/.claude/skills/signal-rules into .claude/skills/signal-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "signal-rules", 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/vaadin/flow-components/tree/main/.claude/skills/signal-rulesType 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 vaadin/flow-components --skill signal-rules -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install vaadin/flow-components signal-rules --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vaadin/flow-components.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/signal-rules .agents/skills/signal-rules && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "signal-rules" agent skill from https://github.com/vaadin/flow-components/tree/main/.claude/skills/signal-rules into .agents/skills/signal-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "signal-rules", 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 vaadin/flow-components --skill signal-rules -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install vaadin/flow-components signal-rules --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vaadin/flow-components.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/signal-rules .cursor/skills/signal-rules && 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 "signal-rules" agent skill from https://github.com/vaadin/flow-components/tree/main/.claude/skills/signal-rules into .cursor/skills/signal-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "signal-rules", 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/vaadin/flow-components.git --path .claude/skills/signal-rules--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 vaadin/flow-components --skill signal-rules -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install vaadin/flow-components signal-rules --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vaadin/flow-components.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/signal-rules .gemini/skills/signal-rules && 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 "signal-rules" agent skill from https://github.com/vaadin/flow-components/tree/main/.claude/skills/signal-rules into .gemini/skills/signal-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "signal-rules", 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 vaadin/flow-components signal-rulesInstalls 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 vaadin/flow-components --skill signal-rules -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/vaadin/flow-components.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/signal-rules .github/skills/signal-rules && 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 "signal-rules" agent skill from https://github.com/vaadin/flow-components/tree/main/.claude/skills/signal-rules into .github/skills/signal-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "signal-rules", 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 vaadin/flow-components --skill signal-rules -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install vaadin/flow-components signal-rules --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vaadin/flow-components.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/signal-rules .opencode/skills/signal-rules && 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 "signal-rules" agent skill from https://github.com/vaadin/flow-components/tree/main/.claude/skills/signal-rules into .opencode/skills/signal-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "signal-rules", 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
signal-rules- GitHub stars
- 129
- Token cost
- ~1.4k tokens
- SKILL.md length
- 758 words
- Files
- 1
- Skills in repo
- 3
- Repo updated
- First seen
- Licence
- None found
At a glance
Read these rules whenever you add, modify, or review bind methods (e.g.
- SKILL.md covers Preface, Rule 1: Imperative APIs must…, Rule 2: One-way bindings not… and Rule 3: Signal bindings need…
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Signal Rules is an agent skill from vaadin/flow-components. Read these rules whenever you add, modify, or review bind methods (e.g. bindError, bindEnabled, bindVisible), or work with Signal or SignalPropertySupport types in component code.
Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It works with Java. The repository describes itself as: Java counterpart of Vaadin Web Components.
Example prompts
- “/signal-rules”
What it can do on your machine
Read from SKILL.md and the folder at commit 873c919. 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
Signal Rules loads about 1.4k tokens when it runs. Until then it costs about 51 tokens; SKILL.md has 758 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 758 words (~1,353 tokens).
“Developers can update component state in two ways:”
- name
- signal-rules
Files
Just SKILL.md in .claude/skills/signal-rules of vaadin/flow-components.
Open the folder on GitHubat commit 873c919
Compare with similar skills
Signal Rules 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 |
|---|---|---|---|---|---|---|
| Signal Rules this skillvaadin/flow-components | 129 | — | ~1.4k | Automated safety check: Pass | None | |
| Brainstormingxpinjection/test-driven-spring-boot | 112 | 52 repos | ~2.6k | Automated safety check: Pass | MIT | |
| Android API Diffgkd-kit/gkd | 43k | — | ~796 | Automated safety check: Pass | GPL-3.0 | |
| Video Cover Imageitwanger/toBeBetterJavaer | 18k | — | ~3.3k | Automated safety check: Pass | None | |
| Lancedb Update Lance Dependencylancedb/lancedb | 12k | — | ~1.1k | Automated safety check: Pass | Apache-2.0 | |
| Java SDK E2E Test with Replay Snapshotgithub/copilot-sdk | 11k | — | ~1.8k | Automated safety check: Pass | MIT |
Similar skills
Android API Diff
gkd-kit/gkd
Looks up Android framework Java and AIDL APIs across versions with the android-api-diff CLI: signatures, availability, source files and hidden-API access code.
Video Cover Image
itwanger/toBeBetterJavaer
Generate matched 3:4, 16:9, and 4:3 short-video cover images from toBeBetterJavaer video scripts or AI/Java technical topics.
Lancedb Update Lance Dependency
lancedb/lancedb
Update LanceDB to a specific Lance release or tag. An agent skill from lancedb/lancedb.
- Official
Java SDK E2E Test with Replay Snapshot
github/copilot-sdk
Creates a Java SDK end-to-end test for the Copilot SDK that runs against a recorded YAML snapshot through a replay proxy, so CI needs no real authentication.
Fory Release
apache/fory
Prepare an Apache Fory release candidate from a clean release branch, including the version bump, RC tag, JVM staging, ASF source artifacts, SVN upload, and vote email.
More from vaadin/flow-components
Repro
vaadin/flow-components
Reproduce a Vaadin Flow component bug from a GitHub issue in vaadin/flow-components or a component-specific issue in vaadin/flow.
Cherry Pick
vaadin/flow-components
Cherry-pick a PR to a target version branch. An agent skill from vaadin/flow-components.
Related
Works with
Questions about Signal Rules
What does Signal Rules do?
Read these rules whenever you add, modify, or review bind methods (e.g. Signal Rules is an agent skill from vaadin/flow-components.g.
How do I install Signal Rules in Claude Code?
Run `npx skills add vaadin/flow-components --skill signal-rules -a claude-code`. Or copy the skill folder (.claude/skills/signal-rules in vaadin/flow-components) into .claude/skills/signal-rules in your project. Claude Code loads it when a task matches its description.
How do I install Signal Rules in Codex?
Run `npx skills add vaadin/flow-components --skill signal-rules -a codex`. Or copy the skill folder (.claude/skills/signal-rules in vaadin/flow-components) into .agents/skills/signal-rules in your project. Codex loads it when a task matches its description.
Can I use Signal Rules 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 vaadin/flow-components --skill signal-rules -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/signal-rules, .gemini/skills/signal-rules, .github/skills/signal-rules and .opencode/skills/signal-rules in your project.
What does Signal Rules need to run?
SKILL.md names no scripts, command-line tools or credentials: Signal Rules is instructions for the agent only.
Does Signal Rules 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 Signal Rules 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 Signal Rules use?
No licence was found for Signal Rules or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Signal Rules use?
About 1.4k tokens (SKILL.md is roughly 5.4k 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 Signal Rules?
Skills that share tags, products or a category with Signal Rules: Brainstorming (xpinjection/test-driven-spring-boot, 112 stars), Android API Diff (gkd-kit/gkd, 43k stars), Video Cover Image (itwanger/toBeBetterJavaer, 18k stars) and Lancedb Update Lance Dependency (lancedb/lancedb, 12k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Signal Rules?
vaadin (a GitHub organization) maintains it in vaadin/flow-components, which has 129 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on October 9, 2026.
Source: vaadin/flow-components on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.