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Agent skill

Creating New Builtin Plugins

by golemcloud in golemcloud/golem

Adds a built-in WASM plugin that is externally released and provisioned by the registry service.

Custom licenceAuto-check passedDevOps & Cloud

Install Creating New Builtin Plugins

skills CLI
$ npx skills add golemcloud/golem --skill creating-new-builtin-plugins -a claude-code

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

GitHub CLI
$ gh skill install golemcloud/golem creating-new-builtin-plugins --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/golemcloud/golem.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/creating-new-builtin-plugins .claude/skills/creating-new-builtin-plugins && 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
creating-new-builtin-plugins
GitHub stars
1.5k
Token cost
~1.1k tokens
SKILL.md length
431 words
Files
1
Skills in repo
289
Repo updated
First seen
Licence
Custom licence

At a glance

Adds a built-in WASM plugin that is externally released and provisioned by the registry service.

  • Works in 8 steps: Create plugins// as a standalone… → Select dependencies from current… → Implement the current async SDK… → …
  • Creating a plugin that ships with Golem and is granted to every environment
  • SKILL.md covers Workflow, Provisioning and Grants and Verification
  • Calls cargo and git

What it does

Creating New Builtin Plugins is an agent skill from golemcloud/golem. Adds a built-in WASM plugin that is externally released and provisioned by the registry service. Use when creating a plugin that ships with Golem and is granted to every environment.

Its SKILL.md is about 1.1k 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 DevOps & Cloud. It works with WebAssembly and OpenTelemetry. The repository describes itself as: Golem Cloud is the agent-native platform for building AI agents and distributed applications that never lose state, never duplicate work, and never require you to build…

When your agent uses it

  • Creating a plugin that ships with Golem and is granted to every environment

Example prompts

  • “/creating-new-builtin-plugins”

Workflow steps

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

  1. Create plugins// as a standalone workspace and Golem application. Follow the OTLP exporter layout and its scoped AGENTS.md.
  2. Select dependencies from current workspace/plugin manifests rather than copying old versions. For an oplog processor, use the current…
  3. Implement the current async SDK interface. The essential shape is
  4. Add a release-profile copy custom command that writes plugins/.wasm from the actual golem-temp/agents/*_release.wasm output.
  5. Extend build-plugins in Makefile.toml. Keep it as duckscript, resolve the local binary through CARGO_MAKE_CRATE_TARGET_DIRECTORY, and pass…
  6. Run cargo make build-plugins. Confirm the generated destination exists, is non-empty, changed when expected, and validates with wasm-tools…
  7. Add one BuiltinPluginDescriptor entry with component name, artifact ID, plugin name, version, and description. Add the component name…
  8. Load publishing-builtin-artifacts, publish an independent immutable component version, and verify the pinned URL before merging.

What it can do on your machine

Read from SKILL.md and the folder at commit c6a3029. 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

    Shell commands in SKILL.md call:

    • cargo
    • 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

Creating New Builtin Plugins loads about 1.1k tokens when it runs. Until then it costs about 53 tokens; SKILL.md has 431 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~53
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k

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 431 words (~1,146 tokens).

“Use plugins/otlp-exporter/, builtin-artifacts.lock.json, and the registry plugin provisioner as the source of truth. Built-in plugins are standalone Golem applications whose generated WASMs are published as immutable assets in golemcloud/golem-builtins. The registry verifies, caches, and provisions those assets at startup.”

— opening of SKILL.md by golemcloud, Custom licence
name
creating-new-builtin-plugins

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .agents/skills/creating-new-builtin-plugins of golemcloud/golem.

Open the folder on GitHubat commit c6a3029

Compare with similar skills

Creating New Builtin Plugins 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.

Creating New Builtin Plugins compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Creating New Builtin Plugins this skillgolemcloud/golem1.5k—~1.1kAutomated safety check: PassCustom licence
Asupersync Mega SkillDicklesworthstone/asupersync281—~2.9kAutomated safety check: PassCustom licence
Nginx To Higress Migrationhigress-group/higress9.5k—~3.9kAutomated safety check: PassApache-2.0
Reflexo ReleaseMyriad-Dreamin/typst.ts1.2k—~1.5kAutomated safety check: PassApache-2.0
Motel Debugkitlangton/motel298—~2.2kAutomated safety check: PassMIT
Aspiremicrosoft/aspire.dev1964 repos~1.1kAutomated safety check: PassMIT

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Works with

Categories

Questions about Creating New Builtin Plugins

What does Creating New Builtin Plugins do?

Adds a built-in WASM plugin that is externally released and provisioned by the registry service. Creating New Builtin Plugins is an agent skill from golemcloud/golem. Adds a built-in WASM plugin that is externally released and provisioned by the registry service.

When should I use Creating New Builtin Plugins?

Creating New Builtin Plugins fits situations like: creating a plugin that ships with Golem and is granted to every environment.

How do I install Creating New Builtin Plugins in Claude Code?

Run `npx skills add golemcloud/golem --skill creating-new-builtin-plugins -a claude-code`. Or copy the skill folder (.agents/skills/creating-new-builtin-plugins in golemcloud/golem) into .claude/skills/creating-new-builtin-plugins in your project. Claude Code loads it when a task matches its description.

How do I install Creating New Builtin Plugins in Codex?

Run `npx skills add golemcloud/golem --skill creating-new-builtin-plugins -a codex`. Or copy the skill folder (.agents/skills/creating-new-builtin-plugins in golemcloud/golem) into .agents/skills/creating-new-builtin-plugins in your project. Codex loads it when a task matches its description.

Can I use Creating New Builtin Plugins 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 golemcloud/golem --skill creating-new-builtin-plugins -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/creating-new-builtin-plugins, .gemini/skills/creating-new-builtin-plugins, .github/skills/creating-new-builtin-plugins and .opencode/skills/creating-new-builtin-plugins in your project.

What does Creating New Builtin Plugins need to run?

Going by SKILL.md and its folder, Creating New Builtin Plugins needs the command-line tools its instructions call (cargo and git).

Does Creating New Builtin Plugins 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 Creating New Builtin Plugins 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 Creating New Builtin Plugins use?

Creating New Builtin Plugins 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 Creating New Builtin Plugins use?

About 1.1k tokens (SKILL.md is roughly 4.6k 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 Creating New Builtin Plugins?

Skills that share tags, products or a category with Creating New Builtin Plugins: Asupersync Mega Skill (Dicklesworthstone/asupersync, 281 stars), Nginx To Higress Migration (higress-group/higress, 9.5k stars), Reflexo Release (Myriad-Dreamin/typst.ts, 1.2k stars) and Motel Debug (kitlangton/motel, 298 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Creating New Builtin Plugins?

golemcloud (a GitHub organization) maintains it in golemcloud/golem, which has 1,507 GitHub stars. The repository holds 289 skills in this directory. The repository was last updated on October 8, 2026.

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