Tutti is a real-time collaboration space where people can work alongside multiple AI agents, including by sharing rooms, editing together, and borrowing agents. It is intended for users who want human-agent or multi-agent collaboration across devices, with open-source and VM versions available. The catalogue entries provide skills and instructions for working with Tutti.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add tutti-os/tutti --skill app_factory_referencegit clone --depth 1 https://github.com/tutti-os/tuttiWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/tutti-os/tutti/app_factory_reference)<a href="https://agentmods.dev/skills/tutti-os/tutti/app_factory_reference"><img src="https://agentmods.dev/badge/skills/tutti-os/tutti/app_factory_reference/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/tutti-os/tutti/app_factory_reference"><img src="https://agentmods.dev/badge/skills/tutti-os/tutti/app_factory_reference.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 5 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high System Prompt Leakage · line 53 Skill contains instructions that could directly expose system prompts, internal rules, or hidden instructions to users or external parties.Fix: Remove any instructions that reveal, print, or output system prompts or internal rules. System instructions should never be exposed to end users.
- high System Prompt Leakage · line 61 Skill contains instructions that could directly expose system prompts, internal rules, or hidden instructions to users or external parties.Fix: Remove any instructions that reveal, print, or output system prompts or internal rules. System instructions should never be exposed to end users.
- medium Agent Snooping · line 26 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Data Exfiltration · line 32 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium MCP Rug Pull · line 44 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00138 | $0.05158 |
| Opus 5.5 | $0.00055 | $0.02063 |
| Sonnet 5.5 | $0.00028 | $0.01032 |
| Haiku 4.5 | $0.00014 | $0.00516 |
Grade A, and why
tutti-workspace-app-factory scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 217 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Tutti Workspace App Factory
Use this skill to create, convert, or repair one Tutti workspace app. Choose one output mode before editing:
- Publishable package: create a self-contained app under
package/, runnable by the Tutti custom app runtime and safe to copy into a workspace app archive. - Local debug app: create a small
.tutti/dev-app/wrapper that launches the user's existing source tree through the Chrome-style "Load unpacked" flow.
When the user selected a directory in App Center and Tutti reports that it cannot be loaded, treat the task as local debug repair. Adapt the selected project by creating or fixing .tutti/dev-app/; do not create a zip wrapper or copy the repository into package/ unless the user explicitly asks for release packaging.
For a full agent-enabled Tutti app repository with apps/web, apps/server, packages/shared, @tutti-os/agent-acp-kit, kit-owned TUTTI_CLI agent/composer discovery, dynamic local agent runtimes, MCP tool gateways, and an app-owned package builder, use $tutti-agent-workspace-app first. Return to this skill for the final package contract and validation. Do not invent managed-agent credential, cwd, JSB fallback, request-body credential, CODEX_HOME, CLI argv, app ID, token, or provider alias behavior in this factory skill; the agent app skill keeps those concerns in server-side kit calls.
If the user request needs local agent or local LLM execution, the Tutti agent catalog, or app-owned MCP/tooling, load $tutti-agent-workspace-app and read its references/dynamic-agent-providers.md and references/agent-acp-kit.md. Agent-enabled apps must use a Node server and @tutti-os/agent-acp-kit; do not implement app-owned local agent execution by shelling out to raw $TUTTI_CLI agent ... commands, provider-specific command families, or session polling.
Version Check And Update Reminder
Before generating, repairing, or validating an app package, perform a best-effort freshness check unless the user asks to skip network access or the environment is offline.
What ships with it
17 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- agents/openai.yaml 346 B
- references/cli-manifest-contract.md 11 KB
- references/demos/simple-node-static-app/AGENTS.md 1.3 KB
- references/demos/simple-node-static-app/bootstrap.sh 401 B runs code
- references/demos/simple-node-static-app/icon.svg 313 B
- references/demos/simple-node-static-app/locales/zh-CN/manifest.json 148 B
- references/demos/simple-node-static-app/server.js 2.1 KB runs code
- references/demos/simple-node-static-app/static/index.html 3.9 KB
- references/demos/simple-node-static-app/tutti.app.json 652 B
- references/demos/simple-node-static-app/tutti.cli.json 537 B
- references/i18n-harness.md 3.9 KB
- references/manifest-contract.md 11 KB
- references/runtime-env.md 11 KB
- references/tutti-cli-commands.md 4.9 KB
- references/validation-checklist.md 3.0 KB
- scripts/check_local_dev_app.py 11 KB runs code
- scripts/validate_tutti_app_package.py 11 KB runs code
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 217 lines · 138 tokens per session scan A 7c522a488a6b
tutti-workspace-app-factory is a skill published in the GitHub repository tutti-os/tutti (3,846 stars, last pushed 12d ago), licensed Apache-2.0. It adds 138 tokens to every session and 5,158 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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