Unity Csharp Reference

What it does

When your agent uses it

• The user asks about the exact signature
• Internal implementation of a Unity API
• Comparing API differences between Unity versions
• Validating LLM-suggested Unity code against the canonical source

Example prompts

• “/unity-csharp-reference”

Requirements

• Pre-approved tools (allowed-tools): Bash(unity-cli:*), Read, Grep, Glob

Workflow steps

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

1. 1Run the runtime checklist in runtime-checklist.md before the first fetch in a new environment.
2. 2Populate the cache for the project's Unity version with unity-cli reference fetch --accept-license (one-time per version).
3. 3Use unity-cli reference grep for line-level pattern lookups with optional context, or unity-cli reference search for filtered file hits.
4. 4Open the candidate file with unity-cli reference view --start-line N --max-lines M to read the relevant span.
5. 5Confirm the signature or behavior, then hand off to unity-csharp-navigate for project sources or unity-csharp-edit for writes.

What it can do on your machine

Read from SKILL.md and the folder at commit 7f45d7a. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Bash(unity-cli:*)
  • Read
  • Grep
  • Glob

  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 bash).

  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

Unity Csharp Reference loads about 1.5k tokens when it runs, and up to ~5.8k if it reads all its reference files. Until then it costs about 121 tokens; SKILL.md has 591 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~121

When it runs · the whole SKILL.md, loaded when a task matches

~1.5k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~5.8k

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

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

The full file from akiojin/unity-cli at commit 7f45d7a, republished under its MIT licence (© akiojin). 591 words, ~1,492 tokens.

name

unity-csharp-reference

description

Browse Unity Technologies' official UnityCsReference C# source as a read-only local cache. Use when the user asks about the exact signature, behavior, or internal implementation of a Unity API, when comparing API differences between Unity versions, or when validating LLM-suggested Unity code against the canonical source. Do not use for editing project code (use `unity-csharp-edit`). Do not use for project-local script reading (use `unity-csharp-navigate`).

allowed-tools

Bash(unity-cli:*), Read, Grep, Glob

metadata.author

akiojin

metadata.version

0.1.0

metadata.category

code

metadata.triggers

reference, unity-api, signature, unity-source, version-diff

metadata.siblings

unity-csharp-navigate, unity-csharp-edit, unity-scene-inspect

unity-cli reference fetch --accept-license
unity-cli reference status --output json
unity-cli reference find-symbol --name Animator --kind class
unity-cli reference grep "class Animator " --context 3
unity-cli reference view Runtime/Export/Animation/Animator.bindings.cs --start-line 100 --max-lines 60
unity-cli reference diff --from 2022.3.10f1 --to 2023.2.20f1 --symbol UnityEngine.Animator
unity-cli reference resolve-symbol-at Assets/Scripts/Player.cs --line 42 --column 18
unity-cli reference embed-build --version 2023.2.20f1
unity-cli reference embed-search --query "animator state callback" --version 2023.2.20f1
unity-cli reference clean --keep 1 --dry-run

© akiojin, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 5 other files (references) in .claude-plugin/plugins/unity-cli/skills/unity-csharp-reference of akiojin/unity-cli.

• SKILL.md
• references/embed-search-playbook.md
• references/fetch-and-cache.md
• references/runtime-checklist.md
• references/symbol-lookup-playbook.md
• references/version-diff-playbook.md

Open the folder on GitHubat commit 7f45d7a