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Agent skill

holaOS App Builder SDK

by holaboss-ai in holaboss-ai/holaOS

Builds new holaOS apps with @holaboss/app-builder-sdk, either as integration-only MCP modules or as dashboard apps with a shadcn UI under src/client/.

Custom licenceAuto-check passedDevelopment

Install holaOS App Builder SDK

skills CLI
$ npx skills add holaboss-ai/holaOS --skill app-builder-sdk -a claude-code

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

GitHub CLI
$ gh skill install holaboss-ai/holaOS app-builder-sdk --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/holaboss-ai/holaOS.git skills-src && mkdir -p .claude/skills && cp -r skills-src/runtime/harnesses/src/embedded-skills/app-builder-sdk .claude/skills/app-builder-sdk && 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
app-builder-sdk
GitHub stars
11k
Token cost
~11k tokens
SKILL.md length
5,064 words
Files
52
Skills in repo
30
Repo updated
First seen
Licence
Custom licence

At a glance

Builds new holaOS apps with @holaboss/app-builder-sdk, either as integration-only MCP modules or as dashboard apps with a shadcn UI under src/client/.

  • Works in 6 steps: package.json — npm semver, no file: paths → bun install once in the app dir → app.runtime.yaml — declare env contract… → …
  • Creating a new holaOS app that connects to one external service
  • SKILL.md covers Tooling discipline for this…, When NOT to use this skill, The 5 primitives and Dashboard / workspace-pane UI…, plus 3 more sections
  • Runs TypeScript scripts from its folder; calls bun, curl and jq; reaches backend.composio.dev and api.twitter.com

What it does

The skill is the route for creating a new holaOS app with the @holaboss/app-builder-sdk. It distinguishes two shapes: an integration module that talks to one external service such as Slack, Discord, Notion, Stripe or Linear through MCP tools and keeps the SDK's default web stub, and a dashboard app, such as a content planner, CRM or kanban tracker, that adds a shadcn UI built with TanStack Start under src/client/. The SDK core is the same for both and is made of five primitives, which include app.connection() for declaring an integration binding and app.resource() for declaring a row type.

It sets tooling rules for the build turn: use file read, search, edit and write tools rather than bash heredocs to create app files, and keep bash for things like bun install and probing processes, with a narrow exception for a later polish pass over src/client files. Bundled reference apps for Google Calendar events, a GitHub workflow, Pinterest publishing and Slack messaging show app.ts, provider and end-to-end test files. Existing module apps are extended in place rather than rewritten.

When your agent uses it

  • Creating a new holaOS app that connects to one external service
  • Building a dashboard app such as a CRM or content planner with a client UI
  • Looking up how existing reference apps structure app.ts and the provider

Example prompts

  • “Build a holaOS integration module for Notion with MCP tools and no dashboard.”
  • “Create a kanban-style tracker app with a shadcn dashboard under src/client.”
  • “Show me how the Slack messaging reference app declares its connection and resources.”

Requirements

  • A holaOS workspace
  • Bun for installing dependencies

Workflow steps

6 steps, taken from the step headings in SKILL.md.

  1. package.json — npm semver, no file: paths
  2. bun install once in the app dir
  3. app.runtime.yaml — declare env contract + mcp tools
  4. integration block in app.runtime.yaml — REQUIRED if the app calls any provider
  5. Register in workspace.yaml
  6. Bind the integration connection

What it can do on your machine

Read from SKILL.md and the folder at commit 4684714. 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 script files (TypeScript, from the files we listed), which the agent can run.

    Shell commands in SKILL.md call:

    • bun
    • curl
    • jq
    • sqlite3
    • bunx

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • backend.composio.dev
    • api.twitter.com
    • api.notion.com

    Also links to:

    • platform.composio.dev

    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

holaOS App Builder SDK loads about 11k tokens when it runs. Until then it costs about 55 tokens; SKILL.md has 5,064 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~55
When it runs · the whole SKILL.md, loaded when a task matches
~11k

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 5,064 words (~11,007 tokens).

“Use this skill whenever the user wants a new holaOS app. Two shapes both ship through the same SDK; pick the one the request needs:”

— opening of SKILL.md by holaboss-ai, Custom licence
name
app-builder-sdk

Read the full SKILL.md on GitHub

Files

SKILL.md and 51 other files in runtime/harnesses/src/embedded-skills/app-builder-sdk of holaboss-ai/holaOS.

  • SKILL.md
  • reference/gcalendar-events/app.ts
  • reference/gcalendar-events/e2e.ts
  • reference/gcalendar-events/provider.ts
  • reference/github-workflow/app.ts
  • reference/github-workflow/provider.ts
  • reference/pinterest-publishing/app.ts
  • reference/pinterest-publishing/provider.ts
  • reference/slack-messaging/app.runtime.yaml
  • reference/slack-messaging/app.ts
  • reference/slack-messaging/e2e-bearer.ts
  • reference/slack-messaging/e2e.ts
  • reference/slack-messaging/manifest.ts
  • reference/slack-messaging/provider.ts
  • reference/slack-messaging/run.ts
  • reference/slack-messaging/server.ts
  • … and 36 more

Open the folder on GitHubat commit 4684714

Compare with similar skills

holaOS App Builder SDK 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.

holaOS App Builder SDK compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
holaOS App Builder SDK this skillholaboss-ai/holaOS11k—~11kAutomated safety check: PassCustom licence
Loora Design Guidelassejlv/loora140—~2.4kAutomated safety check: PassAGPL-3.0
MCP Server Builderanthropics/skills180k63 repos~2.3kAutomated safety check: PassApache-2.0
MCP Server BuildershareAI-lab/learn-claude-code78k5 repos~1.2kAutomated safety check: PassMIT
Typescript Styletjx666/vscode-mcp105—~961Automated safety check: PassCustom licence
MCP Server Builderalirezarezvani/claude-skills28k—~985Automated safety check: PassMIT

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Works with

Categories

Questions about holaOS App Builder SDK

What does holaOS App Builder SDK do?

Builds new holaOS apps with @holaboss/app-builder-sdk, either as integration-only MCP modules or as dashboard apps with a shadcn UI under src/client/. The skill is the route for creating a new holaOS app with the @holaboss/app-builder-sdk. It distinguishes two shapes: an integration module that talks to one external service such as Slack, Discord, Notion, Stripe or Linear through MCP tools and keeps the SDK's default web stub, and a dashboard app, such as a content planner, CRM or kanban tracker, that adds a shadcn UI built with TanStack Start under src/client/.

When should I use holaOS App Builder SDK?

holaOS App Builder SDK fits situations like: creating a new holaOS app that connects to one external service; building a dashboard app such as a CRM or content planner with a client UI; looking up how existing reference apps structure app.ts and the provider.

How do I install holaOS App Builder SDK in Claude Code?

Run `npx skills add holaboss-ai/holaOS --skill app-builder-sdk -a claude-code`. Or copy the skill folder (runtime/harnesses/src/embedded-skills/app-builder-sdk in holaboss-ai/holaOS) into .claude/skills/app-builder-sdk in your project. Claude Code loads it when a task matches its description.

How do I install holaOS App Builder SDK in Codex?

Run `npx skills add holaboss-ai/holaOS --skill app-builder-sdk -a codex`. Or copy the skill folder (runtime/harnesses/src/embedded-skills/app-builder-sdk in holaboss-ai/holaOS) into .agents/skills/app-builder-sdk in your project. Codex loads it when a task matches its description.

Can I use holaOS App Builder SDK 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 holaboss-ai/holaOS --skill app-builder-sdk -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/app-builder-sdk, .gemini/skills/app-builder-sdk, .github/skills/app-builder-sdk and .opencode/skills/app-builder-sdk in your project.

What does holaOS App Builder SDK need to run?

Going by SKILL.md and its folder, holaOS App Builder SDK needs TypeScript for the scripts in its folder and the command-line tools its instructions call (bun, curl, jq, sqlite3 and bunx). Our summary lists: A holaOS workspace; Bun for installing dependencies.

Does holaOS App Builder SDK access the network?

SKILL.md names 4 domains. In commands or code: backend.composio.dev, api.twitter.com and api.notion.com; the agent is likely to contact these when it follows the instructions. As links in the text: platform.composio.dev. This is read from the text; nothing was executed.

Is holaOS App Builder SDK 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 holaOS App Builder SDK use?

holaOS App Builder SDK 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 holaOS App Builder SDK use?

About 11k tokens (SKILL.md is roughly 44k 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 holaOS App Builder SDK?

Skills that share tags, products or a category with holaOS App Builder SDK: Loora Design Guide (lassejlv/loora, 140 stars), MCP Server Builder (anthropics/skills, 180k stars), MCP Server Builder (shareAI-lab/learn-claude-code, 78k stars) and Typescript Style (tjx666/vscode-mcp, 105 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains holaOS App Builder SDK?

holaboss-ai (a GitHub organization) maintains it in holaboss-ai/holaOS, which has 11,455 GitHub stars. The repository holds 30 skills in this directory. The repository was last updated on August 21, 2026.

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