Official agent skill

Poly Symbols

by JetBrains in JetBrains/intellij-community

Implement PolySymbols completion, references, and rename. An agent skill from JetBrains/intellij-community.

OfficialCustom licenceAuto-check passed

Install Poly Symbols

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

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

GitHub CLI
$ gh skill install JetBrains/intellij-community poly-symbols --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/poly-symbols .claude/skills/poly-symbols && 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
poly-symbols
GitHub stars
21k
Token cost
~4.2k tokens
SKILL.md length
1,751 words
Files
7 (incl. references)
Skills in repo
39
Repo updated
First seen
Licence
Custom licence

At a glance

Implement PolySymbols completion, references, and rename. An agent skill from JetBrains/intellij-community.

  • Works in 7 steps: Opt the language in: register… → Contribute scopes: implement… → Resolve references: implement… → …
  • SKILL.md covers Interface cheat sheet, The rule: PolySymbols is…, Wiring checklist — adding… and Case studies, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Poly Symbols is an agent skill from JetBrains/intellij-community, published by the product's own GitHub organization. Implement PolySymbols completion, references, and rename.

Its SKILL.md is about 4.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 7 other files, including reference files (for example `references/case-studies.md`, `references/migration.md` and `references/patterns.md`).

The repository describes itself as: IntelliJ IDEA & IntelliJ Platform.

Example prompts

  • “/poly-symbols”

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

  1. Opt the language in: register polySymbols.enableInLanguage language="..." (EP
  2. Contribute scopes: implement PolySymbolQueryScopeContributor
  3. Resolve references: implement PsiPolySymbolReferenceProvider per host PsiElement type
  4. Supply declarations: if a symbol maps 1:1 onto a real PsiElement and lives purely in the
  5. Wire completion: register an ordinary completion.contributor whose provider extends
  6. Optional: PolySymbolQueryConfigurator for context rules/name-conversion rules;
  7. Use PolySymbolWithPattern/the pattern DSL when the language/framework layers a microsyntax on

What it can do on your machine

Read from SKILL.md and the folder at commit 06e4175. 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

    Links to these hosts (documentation or services it may open):

    • plugins.jetbrains.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

Poly Symbols loads about 4.2k tokens when it runs, and up to ~32k if it reads all its reference files. Until then it costs about 18 tokens; SKILL.md has 1,751 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
~4.2k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~32k

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 1,751 words (~4,243 tokens).

“PolySymbols is a framework built on top of the platform's Symbol API (PolySymbol : Symbol) for sharing symbol definitions and code-insight features (completion, references, documentation, navigation, rename, find-usages, semantic highlighting) across languages and frameworks. It was called "Web Symbols" in…”

— opening of SKILL.md by JetBrains, Custom licence
name
poly-symbols

Read the full SKILL.md on GitHub

Files

SKILL.md and 6 other files (references) in .agents/skills/poly-symbols of JetBrains/intellij-community.

  • SKILL.md
  • references/case-studies.md
  • references/migration.md
  • references/patterns.md
  • references/query-model.md
  • references/testing.md
  • references/web-types.md

Open the folder on GitHubat commit 06e4175

Compare with similar skills

Poly Symbols 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.

Poly Symbols compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Poly Symbols this skillJetBrains/intellij-community21k—~4.2kAutomated safety check: PassCustom licence
Implementsickn33/agentic-awesome-skills47k5 repos~306Automated safety check: PassMIT
Incremental Implementationaddyosmani/agent-skills104k1 repos~2.3kAutomated safety check: PassMIT
Implementcodewhale-hq/Codewhale41k—~190Automated safety check: PassMIT
Implementbestofjs/bestofjs3.1k18 repos~109Automated safety check: PassMIT
ImplementAutomattic/simplenote-android1.9k—~1.1kAutomated safety check: PassGPL-2.0

Similar skills

  • Implement

    sickn33/agentic-awesome-skills

    Implement a piece of work based on a PRD or set of issues. An agent skill from sickn33/agentic-awesome-skills.

    47k GitHub starsUsed in 5 repos~306 tokens
    Product & Project ManagementAuto-check passed
  • Incremental Implementation

    addyosmani/agent-skills

    Delivers a change in thin vertical slices, each implemented, tested, verified and committed before the next, using vertical, contract-first or risk-first slicing.

    104k GitHub starsUsed in 1 repo~2.3k tokens
    Agent WorkflowsAuto-check passed
  • Implement

    codewhale-hq/Codewhale

    Carry an authorized, defined request or approved plan through scoped edits and proportionate verification.

    41k GitHub stars~190 tokensUpdated today
    Auto-check passed
  • Implement

    bestofjs/bestofjs

    Implement a piece of work based on a spec or set of tickets.

    3.1k GitHub starsUsed in 18 repos~109 tokens
    Auto-check passed
  • Implement

    Automattic/simplenote-android

    End-to-end implementation workflow: plan, implement, verify, commit, and open a draft PR.

    1.9k GitHub stars~1.1k tokensUpdated today
    Testing & QAAuto-check passed
  • Sparc Implement

    ruvnet/ruflo

    Run the SPARC Pseudocode and Architecture phases (2 and 3) — write algorithm pseudocode, design module boundaries and API contracts, then implement

    74k GitHub stars~1.3k tokensUpdated today
    Backend & APIsAuto-check: notes

More from JetBrains/intellij-community

All 39 skills in this repo
  • Youtrack Community

    JetBrains/intellij-community

    Official

    YouTrack CLI for a community checkout; the monorepo uses youtrack.

    21k GitHub stars~3.2k tokensUpdated today
    Auto-check: notes
  • Compare Python Typecheckers

    JetBrains/intellij-community

    Official

    Compare Python type inference with ty, pyrefly, and basedpyright.

    21k GitHub stars~617 tokensUpdated today
    Auto-check passed
  • Sibling Checkout Commits

    JetBrains/intellij-community

    Official

    Take commits from a sibling checkout as patches, without a fetch.

    21k GitHub stars~753 tokensUpdated today
    Auto-check passed
  • Code Style

    JetBrains/intellij-community

    Official

    Apply IntelliJ Kotlin and Java code style when writing or reviewing.

    21k GitHub stars~795 tokensUpdated today
    Auto-check passed
  • Notebook For Experiment

    JetBrains/intellij-community

    Official

    Create reproducible Jupyter notebooks for performance experiments.

    21k GitHub stars~4.4k tokensUpdated today
    Auto-check: warnings
  • Jewel Markdown

    JetBrains/intellij-community

    Official

    Build or debug Jewel Markdown parsing, rendering, and styling.

    21k GitHub stars~4.3k tokensUpdated today
    Auto-check passed

Questions about Poly Symbols

What does Poly Symbols do?

Implement PolySymbols completion, references, and rename. An agent skill from JetBrains/intellij-community. Poly Symbols is an agent skill from JetBrains/intellij-community, published by the product's own GitHub organization. Implement PolySymbols completion, references, and rename.

How do I install Poly Symbols in Claude Code?

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

How do I install Poly Symbols in Codex?

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

Can I use Poly Symbols 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 poly-symbols -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/poly-symbols, .gemini/skills/poly-symbols, .github/skills/poly-symbols and .opencode/skills/poly-symbols in your project.

What does Poly Symbols need to run?

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

Does Poly Symbols access the network?

SKILL.md names 1 domain. As links in the text: plugins.jetbrains.com. This is read from the text; nothing was executed.

Is Poly Symbols 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 Poly Symbols use?

Poly Symbols 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 Poly Symbols use?

About 4.2k tokens (SKILL.md is roughly 17k 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 28k tokens, read only when the agent opens those files.

What are the alternatives to Poly Symbols?

Skills that share tags, products or a category with Poly Symbols: Implement (sickn33/agentic-awesome-skills, 47k stars), Incremental Implementation (addyosmani/agent-skills, 104k stars), Implement (codewhale-hq/Codewhale, 41k stars) and Implement (bestofjs/bestofjs, 3.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Poly Symbols?

JetBrains (a GitHub organization, an official publisher) maintains it in JetBrains/intellij-community, which has 20,619 GitHub stars. The repository holds 39 skills in this directory. The repository was last updated on October 10, 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.