Kotlin Tooling Kotlin Toolchain
Kotlin/kotlin-agent-skills
Load when building, running, testing, packaging, linting, or configuring a Kotlin/Java project with the Kotlin Toolchain (JetBrains' unified CLI, formerly Amper), when scaffolding a new or…
Reformat source code in this project using its own code-style settings — through the IntelliJ IDE when it's running, otherwise via the project's own formatter (Spotless / google-java-format /…
Install Codefmt
$ npx skills add Amplicode/spring-skills --skill codefmt -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Amplicode/spring-skills codefmt --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/Amplicode/spring-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/codefmt .claude/skills/codefmt && 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 "codefmt" agent skill from https://github.com/Amplicode/spring-skills/tree/main/skills/codefmt into .claude/skills/codefmt/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codefmt", 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/Amplicode/spring-skills/tree/main/skills/codefmtType 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 Amplicode/spring-skills --skill codefmt -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Amplicode/spring-skills codefmt --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Amplicode/spring-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/codefmt .agents/skills/codefmt && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "codefmt" agent skill from https://github.com/Amplicode/spring-skills/tree/main/skills/codefmt into .agents/skills/codefmt/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codefmt", 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 Amplicode/spring-skills --skill codefmt -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Amplicode/spring-skills codefmt --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Amplicode/spring-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/codefmt .cursor/skills/codefmt && 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 "codefmt" agent skill from https://github.com/Amplicode/spring-skills/tree/main/skills/codefmt into .cursor/skills/codefmt/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codefmt", 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/Amplicode/spring-skills.git --path skills/codefmt--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 Amplicode/spring-skills --skill codefmt -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Amplicode/spring-skills codefmt --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Amplicode/spring-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/codefmt .gemini/skills/codefmt && 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 "codefmt" agent skill from https://github.com/Amplicode/spring-skills/tree/main/skills/codefmt into .gemini/skills/codefmt/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codefmt", 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 Amplicode/spring-skills codefmtInstalls 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 Amplicode/spring-skills --skill codefmt -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Amplicode/spring-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/codefmt .github/skills/codefmt && 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 "codefmt" agent skill from https://github.com/Amplicode/spring-skills/tree/main/skills/codefmt into .github/skills/codefmt/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codefmt", 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 Amplicode/spring-skills --skill codefmt -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Amplicode/spring-skills codefmt --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Amplicode/spring-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/codefmt .opencode/skills/codefmt && 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 "codefmt" agent skill from https://github.com/Amplicode/spring-skills/tree/main/skills/codefmt into .opencode/skills/codefmt/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codefmt", 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
codefmt- GitHub stars
- 126
- Token cost
- ~595 tokens
- SKILL.md length
- 227 words
- Files
- 7 (incl. scripts, references)
- Skills in repo
- 16
- Repo updated
- First seen
- Licence
- None found
At a glance
Reformat source code in this project using its own code-style settings — through the IntelliJ IDE when it's running, otherwise via the project's own formatter (Spotless / google-java-format /…
- Fix indentation
- Calls git
- Optimize imports on Java/Kotlin/XML/etc
What it does
Codefmt is an agent skill from Amplicode/spring-skills. Reformat source code in this project using its own code-style settings — through the IntelliJ IDE when it's running, otherwise via the project's own formatter (Spotless / google-java-format / palantir-java-format) as a fallback. Use this whenever the user asks to format, reformat, tidy, "prettify", fix indentation, or optimize imports on Java/Kotlin/XML/etc. files — whether it's a single named file, a selected block or line range, a group of named files, or all uncommitted (git-changed) files. This skill is also…
Its SKILL.md is about 600 tokens, which your agent loads only when the skill is triggered. The skill folder holds 8 other files, including scripts and reference files (for example `references/fallback.md` and `references/ide.md`).
It sits in Mobile, covering Linting and formatting and Android development. It works with Java, Git, JetBrains IDEs and Kotlin. The repository describes itself as: Amplicode Agent Tools.
When your agent uses it
- Fix indentation
- Optimize imports on Java/Kotlin/XML/etc
Example prompts
- “s running, otherwise via the project”
- “prettify”
- “/codefmt”
What it can do on your machine
Read from SKILL.md and the folder at commit bf19b3c. 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
Ships 4 files in scripts/, which the agent can run.
Shell commands in SKILL.md call:
git
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.
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
Codefmt loads about 595 tokens when it runs, and up to ~3.3k if it reads all its reference files. Until then it costs about 177 tokens; SKILL.md has 227 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); the scripts in this folder are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 227 words (~595 tokens).
“Two paths reach the same code style: the IDE applies it through IntelliJ's own formatter (highest fidelity, keeps the IDE's VFS/PSI caches consistent); the CLI fallback applies it through the project's own external formatter (Spotless / google-java-format / palantir-java-format) when…”
- name
- codefmt
Files
SKILL.md and 6 other files (scripts, references) in skills/codefmt of Amplicode/spring-skills.
- SKILL.md
- references/fallback.md
- references/ide.md
- scripts/format-code-block.kts
- scripts/format-file-group.kts
- scripts/format-single-file.kts
- scripts/format-uncommitted.kts
Open the folder on GitHubat commit bf19b3c
Compare with similar skills
Codefmt 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 |
|---|---|---|---|---|---|---|
| Codefmt this skillAmplicode/spring-skills | 126 | — | ~595 | Automated safety check: Pass | None | |
| Kotlin Tooling Kotlin ToolchainKotlin/kotlin-agent-skills | 1.1k | — | ~2.4k | Automated safety check: Pass | Apache-2.0 | |
| Migrate Intellij Utilflutter/flutter-intellij | 2k | — | ~600 | Automated safety check: Pass | BSD-3-Clause | |
| Code Stewardnekomangaorg/Neko | 2.8k | — | ~977 | Automated safety check: Pass | Apache-2.0 | |
| Reviewwoocommerce/woocommerce-android | 319 | — | ~600 | Automated safety check: Notes | GPL-2.0 | |
| Test Revieweraxelixlabs/axelix | 147 | — | ~3.2k | Automated safety check: Pass | LGPL-3.0 |
Similar skills
Migrate Intellij Util
flutter/flutter-intellij
Optimize memory usage, consistency, and performance by migrating standard Java/Kotlin classes to IntelliJ's specialized com.intellij.util implementations.
Code Steward
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Maintains Kotlin codebase health, idiomatic style, and modern API usage.
Review
woocommerce/woocommerce-android
Review code changes against project architecture, style, and conventions
Test Reviewer
axelixlabs/axelix
Reviews test code in GitHub pull requests for isolation, public-API contract coverage, AAA structure, and correct exception assertions.
Test Writer
axelixlabs/axelix
Writes new tests for Axelix source code (Java, Kotlin, TypeScript, JavaScript) that follow the project's testing standards — public-API contract coverage, test isolation, given/when/then structure…
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Related
Works with
Categories
Questions about Codefmt
What does Codefmt do?
Reformat source code in this project using its own code-style settings — through the IntelliJ IDE when it's running, otherwise via the project's own formatter (Spotless / google-java-format /…. Codefmt is an agent skill from Amplicode/spring-skills. Reformat source code in this project using its own code-style settings — through the IntelliJ IDE when it's running, otherwise via the project's own formatter (Spotless / google-java-format / palantir-java-format) as a fallback.
When should I use Codefmt?
Codefmt fits situations like: fix indentation; optimize imports on Java/Kotlin/XML/etc.
How do I install Codefmt in Claude Code?
Run `npx skills add Amplicode/spring-skills --skill codefmt -a claude-code`. Or copy the skill folder (skills/codefmt in Amplicode/spring-skills) into .claude/skills/codefmt in your project. Claude Code loads it when a task matches its description.
How do I install Codefmt in Codex?
Run `npx skills add Amplicode/spring-skills --skill codefmt -a codex`. Or copy the skill folder (skills/codefmt in Amplicode/spring-skills) into .agents/skills/codefmt in your project. Codex loads it when a task matches its description.
Can I use Codefmt 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 Amplicode/spring-skills --skill codefmt -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/codefmt, .gemini/skills/codefmt, .github/skills/codefmt and .opencode/skills/codefmt in your project.
What does Codefmt need to run?
Going by SKILL.md and its folder, Codefmt needs the command-line tools its instructions call (git).
Does Codefmt access the network?
SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Codefmt 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Codefmt use?
No licence was found for Codefmt or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Codefmt use?
About 595 tokens (SKILL.md is roughly 2.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.7k tokens, read only when the agent opens those files.
What are the alternatives to Codefmt?
Skills that share tags, products or a category with Codefmt: Kotlin Tooling Kotlin Toolchain (Kotlin/kotlin-agent-skills, 1.1k stars), Migrate Intellij Util (flutter/flutter-intellij, 2k stars), Code Steward (nekomangaorg/Neko, 2.8k stars) and Review (woocommerce/woocommerce-android, 319 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Codefmt?
Amplicode (a GitHub organization) maintains it in Amplicode/spring-skills, which has 126 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on September 6, 2026.
Source: Amplicode/spring-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.