Official agent skill

Jna

by JetBrains in JetBrains/intellij-community

Implement or debug JNA bindings and ABI layouts in Kotlin or Java.

OfficialCustom licenceAuto-check passedMobile

Install Jna

skills CLI
$ npx skills add JetBrains/intellij-community --skill jna -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install JetBrains/intellij-community jna --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/JetBrains/intellij-community.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/jna .claude/skills/jna && rm -rf skills-src

Use ~/.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/

Facts

Skill name
jna
GitHub stars
21k
Token cost
~680 tokens
SKILL.md length
353 words
Files
1
Skills in repo
39
Repo updated
First seen
Licence
Custom licence

At a glance

Implement or debug JNA bindings and ABI layouts in Kotlin or Java.

  • Tasks that involve Android development
  • SKILL.md covers Reuse existing mappings, Keep reflected types accessible, Match the native ABI and Verify without requiring…
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Jna is an agent skill from JetBrains/intellij-community, published by the product's own GitHub organization. Implement or debug JNA bindings and ABI layouts in Kotlin or Java.

Its SKILL.md is about 680 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 Mobile, covering Android development. It works with Kotlin and Java. The repository describes itself as: IntelliJ IDEA & IntelliJ Platform.

When your agent uses it

  • Tasks that involve Android development

Example prompts

  • “/jna”

What it can do on your machine

Read from SKILL.md and the folder at commit cbaf50b. 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

Jna loads about 680 tokens when it runs. Until then it costs about 18 tokens; SKILL.md has 353 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~18
When it runs · the whole SKILL.md, loaded when a task matches
~680

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 353 words (~680 tokens).

“Treat every mapping as an ABI contract. Verify the native declaration, target architectures, and ownership rules before changing Kotlin or Java code.”

— opening of SKILL.md by JetBrains, Custom licence
name
jna

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .agents/skills/jna of JetBrains/intellij-community.

Open the folder on GitHubat commit cbaf50b

Compare with similar skills

Jna 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.

Jna compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Jna this skillJetBrains/intellij-community21k—~680Automated safety check: PassCustom licence
Build Teaql Appteaql/teaql-agent-kit2.8k—~4.6kAutomated safety check: PassMIT
Android Maps Ktxgooglemaps/android-maps-ktx360—~897Automated safety check: PassApache-2.0
Android Audio E2Ehyochan/react-native-nitro-sound961—~814Automated safety check: PassMIT
Stabilizing Compose TypesrosuH/EasyWatermark1.9k1 repos~4.4kAutomated safety check: PassApache-2.0
Project Binding Adapter From SourceafkT/DevUtils1.6k—~1.6kAutomated safety check: PassApache-2.0

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Works with

Categories

Questions about Jna

What does Jna do?

Implement or debug JNA bindings and ABI layouts in Kotlin or Java. Jna is an agent skill from JetBrains/intellij-community, published by the product's own GitHub organization. Implement or debug JNA bindings and ABI layouts in Kotlin or Java.

When should I use Jna?

Jna fits situations like: tasks that involve Android development.

How do I install Jna in Claude Code?

Run `npx skills add JetBrains/intellij-community --skill jna -a claude-code`. Or copy the skill folder (.agents/skills/jna in JetBrains/intellij-community) into .claude/skills/jna in your project. Claude Code loads it when a task matches its description.

How do I install Jna in Codex?

Run `npx skills add JetBrains/intellij-community --skill jna -a codex`. Or copy the skill folder (.agents/skills/jna in JetBrains/intellij-community) into .agents/skills/jna in your project. Codex loads it when a task matches its description.

Can I use Jna 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 JetBrains/intellij-community --skill jna -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/jna, .gemini/skills/jna, .github/skills/jna and .opencode/skills/jna in your project.

What does Jna need to run?

SKILL.md names no scripts, command-line tools or credentials: Jna is instructions for the agent only.

Does Jna 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 Jna 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 Jna use?

Jna 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 Jna use?

About 680 tokens (SKILL.md is roughly 2.7k 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 Jna?

Skills that share tags, products or a category with Jna: Build Teaql App (teaql/teaql-agent-kit, 2.8k stars), Android Maps Ktx (googlemaps/android-maps-ktx, 360 stars), Android Audio E2E (hyochan/react-native-nitro-sound, 961 stars) and Stabilizing Compose Types (rosuH/EasyWatermark, 1.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Jna?

JetBrains (a GitHub organization, an official publisher) maintains it in JetBrains/intellij-community, which has 20,617 GitHub stars. The repository holds 39 skills in this directory. The repository was last updated on October 9, 2026.

Source: JetBrains/intellij-community on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.