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semio: Skill for Claude Code

.agents/skills/add-app-to-server/SKILL.md

add-app-to-server is a skill for Claude Code, Codex from usalu/semio. It costs 95 tokens per session (3,340 once invoked), scanned A, original, AGPL-3.0.

A development workflow for adding an interactive screen to an existing MCP server, a program that lets an AI agent use external tools or data.

In plain words
What is it for?
Use it to add an app, view, or interactive interface to an existing MCP tool or server.
Why use it?
It helps turn tool results into a user interface when a text-only tool response is not enough.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

This is usalu/semio's own configuration. It tells Claude Code and Codex how to work on semio itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything semio configures →

not rated 21repo yesterday A scan 95 tokens AGPL-3.0
View source ↗ usalu/semio play.semio-tech.com
Reuse

Borrowing it

Nothing to install: this file belongs to usalu/semio. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/usalu/semio/⛳wip/.agents/skills/add-app-to-server/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/usalu/semio

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for add-app-to-server

README.md
[![agentmods](https://agentmods.dev/badge/skills/usalu/semio/add-app-to-server/github.svg)](https://agentmods.dev/skills/usalu/semio/add-app-to-server)
Your own site
<a href="https://agentmods.dev/skills/usalu/semio/add-app-to-server"><img src="https://agentmods.dev/badge/skills/usalu/semio/add-app-to-server/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.

agentmods 80×15 button for add-app-to-server

Your own site · 80×15
<a href="https://agentmods.dev/skills/usalu/semio/add-app-to-server"><img src="https://agentmods.dev/badge/skills/usalu/semio/add-app-to-server.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,340 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00095 $0.03340
Opus 5.5 $0.00038 $0.01336
Sonnet 5.5 $0.00019 $0.00668
Haiku 4.5 $0.00010 $0.00334

Measured 2mo ago against content hash 979d7a5aaa1f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

add-app-to-server 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 2mo 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.

.agents/skills/add-app-to-server/SKILL.md · 390 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Changes

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.

  1. 2mo ago First seen · 390 lines · 95 tokens per session scan A 979d7a5aaa1f

Subscribe to this mod's changes

add-app-to-server is a skill published in the GitHub repository usalu/semio (21 stars, last pushed yesterday), licensed AGPL-3.0. It adds 95 tokens to every session and 3,340 once invoked, about $0.0004 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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Related

add-app-to-server compared with skills from other repositories

add-app-to-server next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
add-app-to-serverusalu/semioSkill21yesterdayAGPL-3.0A95Claude Code, Codex
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parametric-modelingmarcinfinitesimal533/Claude-skills-for-Computational-DesignersSkill324d agoMITA29Claude Code
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3d-in-readmenirholas/three.wsSkill269yesterdayApache-2.0A123Claude Code
blender-asset-validationifBars/blender-agent-studioSkill1045d agoMITA71Claude Code, Codex