Use Yaak
mountain-loop/yaak
A skill your agent uses when the user mentions Yaak, a Yaak workspace, or the yaak command, or asks to call, hit, or smoke test HTTP/REST endpoints, save or organize API requests for reuse or manual…
Apply Epicenter’s platform/ build-time seam across browser, Tauri, and host targets.
Custom licenceAuto-check passed
Install Platform Seams
$ npx skills add EpicenterHQ/epicenter --skill platform-seams -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install EpicenterHQ/epicenter platform-seams --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/EpicenterHQ/epicenter.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/platform-seams .claude/skills/platform-seams && 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 "platform-seams" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/platform-seams into .claude/skills/platform-seams/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "platform-seams", 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/EpicenterHQ/epicenter/tree/main/.agents/skills/platform-seamsType 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 EpicenterHQ/epicenter --skill platform-seams -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install EpicenterHQ/epicenter platform-seams --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/platform-seams .agents/skills/platform-seams && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "platform-seams" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/platform-seams into .agents/skills/platform-seams/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "platform-seams", 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 EpicenterHQ/epicenter --skill platform-seams -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install EpicenterHQ/epicenter platform-seams --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/platform-seams .cursor/skills/platform-seams && 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 "platform-seams" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/platform-seams into .cursor/skills/platform-seams/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "platform-seams", 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/EpicenterHQ/epicenter.git --path .agents/skills/platform-seams--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 EpicenterHQ/epicenter --skill platform-seams -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install EpicenterHQ/epicenter platform-seams --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/platform-seams .gemini/skills/platform-seams && 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 "platform-seams" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/platform-seams into .gemini/skills/platform-seams/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "platform-seams", 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 EpicenterHQ/epicenter platform-seamsInstalls 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 EpicenterHQ/epicenter --skill platform-seams -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/platform-seams .github/skills/platform-seams && 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 "platform-seams" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/platform-seams into .github/skills/platform-seams/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "platform-seams", 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 EpicenterHQ/epicenter --skill platform-seams -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install EpicenterHQ/epicenter platform-seams --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/platform-seams .opencode/skills/platform-seams && 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 "platform-seams" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/platform-seams into .opencode/skills/platform-seams/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "platform-seams", 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
platform-seams- GitHub stars
- 4.8k
- Token cost
- ~1.3k tokens
- SKILL.md length
- 628 words
- Files
- 1
- Skills in repo
- 65
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Apply Epicenter’s platform/ build-time seam across browser, Tauri, and host targets.
- Changing a seam
- SKILL.md covers Storage is not a seam, Declaring one, The two conditions answer… and A dropped leaf fails nothing, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Build condition
What it does
Platform Seams is an agent skill from EpicenterHQ/epicenter. Apply Epicenter’s platform/ build-time seam across browser, Tauri, and host targets. Use when adding or changing a seam, build condition, typecheck leaf, or deciding whether code belongs behind one.
Its SKILL.md is about 1.3k 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 Tauri. The repository describes itself as: Open-source, local-first apps.
When your agent uses it
- Changing a seam
- Build condition
- Deciding whether code belongs behind one
Example prompts
- “/platform-seams”
What it can do on your machine
Read from SKILL.md and the folder at commit 5b4bb69. 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 and jsonc).
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
Platform Seams loads about 1.3k tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 628 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 628 words (~1,344 tokens).
“Replaces workspace-app-composition, whose subject (defineWorkspace, the workspace singleton, environment factories, the daemon) was deleted with the workspace plane. The seam below is the part that survived.”
- name
- platform-seams
- metadata.author
- epicenter
- metadata.version
- 7.0
Files
Just SKILL.md in .agents/skills/platform-seams of EpicenterHQ/epicenter.
Open the folder on GitHubat commit 5b4bb69
Compare with similar skills
Platform Seams 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 |
|---|---|---|---|---|---|---|
| Platform Seams this skillEpicenterHQ/epicenter | 4.8k | — | ~1.3k | Automated safety check: Pass | Custom licence | |
| Use Yaakmountain-loop/yaak | 19k | — | ~1.9k | Automated safety check: Pass | MIT | |
| Yaak Changelogmountain-loop/yaak | 19k | — | ~1.6k | Automated safety check: Pass | MIT | |
| Native Feel Cross Platform Desktopyetone/native-feel-skill | 1.9k | 1 repos | ~1.5k | Automated safety check: Pass | MIT | |
| Ccgui Plugin Creatorzhukunpenglinyutong/desktop-cc-gui | 4.5k | — | ~1.3k | Automated safety check: Pass | None | |
| Tabularis Local PR ReviewTabularisDB/tabularis | 5.1k | — | ~1.4k | Automated safety check: Pass | Apache-2.0 |
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mountain-loop/yaak
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Related
Works with
Questions about Platform Seams
What does Platform Seams do?
Apply Epicenter’s platform/ build-time seam across browser, Tauri, and host targets. Platform Seams is an agent skill from EpicenterHQ/epicenter. Apply Epicenter’s platform/ build-time seam across browser, Tauri, and host targets.
When should I use Platform Seams?
Platform Seams fits situations like: changing a seam; build condition; deciding whether code belongs behind one.
How do I install Platform Seams in Claude Code?
Run `npx skills add EpicenterHQ/epicenter --skill platform-seams -a claude-code`. Or copy the skill folder (.agents/skills/platform-seams in EpicenterHQ/epicenter) into .claude/skills/platform-seams in your project. Claude Code loads it when a task matches its description.
How do I install Platform Seams in Codex?
Run `npx skills add EpicenterHQ/epicenter --skill platform-seams -a codex`. Or copy the skill folder (.agents/skills/platform-seams in EpicenterHQ/epicenter) into .agents/skills/platform-seams in your project. Codex loads it when a task matches its description.
Can I use Platform Seams 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 EpicenterHQ/epicenter --skill platform-seams -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/platform-seams, .gemini/skills/platform-seams, .github/skills/platform-seams and .opencode/skills/platform-seams in your project.
What does Platform Seams need to run?
SKILL.md names no scripts, command-line tools or credentials: Platform Seams is instructions for the agent only.
Does Platform Seams 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 Platform Seams 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 Platform Seams use?
Platform Seams 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 Platform Seams use?
About 1.3k 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 Platform Seams?
Skills that share tags, products or a category with Platform Seams: Use Yaak (mountain-loop/yaak, 19k stars), Yaak Changelog (mountain-loop/yaak, 19k stars), Native Feel Cross Platform Desktop (yetone/native-feel-skill, 1.9k stars) and Ccgui Plugin Creator (zhukunpenglinyutong/desktop-cc-gui, 4.5k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Platform Seams?
EpicenterHQ (a GitHub organization) maintains it in EpicenterHQ/epicenter, which has 4,822 GitHub stars. The repository holds 65 skills in this directory. The repository was last updated on October 8, 2026.
Source: EpicenterHQ/epicenter on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.