Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add OutSystems/outsystems-mcp/plugin install outsystemsWrote 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/outsystems/outsystems-mcp/outsystems-app-architecture)<a href="https://agentmods.dev/skills/outsystems/outsystems-mcp/outsystems-app-architecture"><img src="https://agentmods.dev/badge/skills/outsystems/outsystems-mcp/outsystems-app-architecture/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/outsystems/outsystems-mcp/outsystems-app-architecture"><img src="https://agentmods.dev/badge/skills/outsystems/outsystems-mcp/outsystems-app-architecture.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00199 | $0.08582 |
| Opus 5.5 | $0.00080 | $0.03433 |
| Sonnet 5.5 | $0.00040 | $0.01716 |
| Haiku 4.5 | $0.00020 | $0.00858 |
Grade A, and why
outsystems-app-architecture 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 7d 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 — 561 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Beta Feature. This skill is a Beta Feature: a non-final OutSystems capability provided to collect customer feedback. It can change significantly, including through breaking changes, or be discontinued. The first time you use this skill in a conversation, tell the user it's a Beta Feature and share https://www.outsystems.com/legal/beta-features-agreement.
OutSystems App Architecture
Produces a single HTML file with a force-directed graph of one app's internal structure: UI flows → screens, action groups → server, client and service actions, data layer (entities / enums / structures, with entity → entity reference edges), security (roles), and dependencies — AI model connections and referenced libraries. OutSystems dark theme, filter-by-category sidebar, click a node for its attributes, signature or input parameters. The sidebar also shows where the app is deployed and its recent revisions.
The app data is inlined in the file. The graph library (vis-network 9.1.9, pinned with a Subresource Integrity hash) and the fonts load from CDNs: without network access, or if the CDN serves anything but the pinned file, the page shows a plain HTML listing of the same data instead of the graph.
Prerequisites
- The OutSystems MCP server is connected and signed in. This skill reads
the tools named below; tool names here are the server's own, and your
harness may show them with a prefix (in Claude Code,
mcp__plugin_outsystems_outsystems__app_infoforapp_info). - A shell with
python3(3.8 or later, standard library only). The script reads the saved tool results from disk and writes the HTML; it never calls the server and holds no sign-in of its own. <skill-folder>below is this skill's own folder: the one holding this file (in the OutSystems plugin,skills/outsystems-app-architecture/), so<skill-folder>/scripts/build.pyis the script next to it. Values in angle brackets are placeholders you substitute; quote every path, since a home folder can contain spaces.- Run every
build.pycommand on its own and exactly as this file writes it: the skill's permissions matchpython3 "<skill-folder>/scripts/build.py" ...and nothing else, so an added redirect (2>&1), pipe or chained command (;,&&) makes the harness stop and ask the user. - No shell available? Stop and tell the user this skill needs one (for example Claude Code, not Claude Desktop's Chat tab); don't try to build the page by hand.
What ships with it
3 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.
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.
- 7d ago First seen · 561 lines · 199 tokens per session scan A 70ee15eb627f
outsystems-app-architecture is a skill published in the GitHub repository OutSystems/outsystems-mcp (40 stars, last pushed today), licensed MIT. It adds 199 tokens to every session and 8,582 once invoked, about $0.0008 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 2026-10-07.
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