add-mcp-server

add-mcp-server is a skill for Claude Code from pwittchen/aictl. It costs 56 tokens per session (2,384 once invoked), scanned B, original, no licence file.

A setup guide for connecting a Model Context Protocol server to aictl, a command-line tool, through the /.aictl/mcp.json configuration file.

In plain words
What is it for?
Use it to add a server's command, arguments, environment variables, and timeout to the existing aictl configuration.
Why use it?
It removes the manual work and risk of editing the configuration incorrectly or overwriting existing server entries.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to add a server's command, arguments, environment variables, and timeout to the existing aictl configuration.

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Install with agentmods
npx agentmods add skills/pwittchen/aictl/add-mcp-server
Install

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.

Any agent
npx skills add pwittchen/aictl --skill add-mcp-server
Clone the repo
git clone --depth 1 https://github.com/pwittchen/aictl

Made for: Claude Code.

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-mcp-server

README.md
[![agentmods](https://agentmods.dev/badge/skills/pwittchen/aictl/add-mcp-server.svg)](https://agentmods.dev/skills/pwittchen/aictl/add-mcp-server)
Your own site
<a href="https://agentmods.dev/skills/pwittchen/aictl/add-mcp-server"><img src="https://agentmods.dev/badge/skills/pwittchen/aictl/add-mcp-server.svg" alt="Measured on agentmods" height="20"></a>
Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,384 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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 $0.00056 $0.02384
Opus 5 $0.00028 $0.01192
Sonnet 5 $0.00011 $0.00477
Haiku 4.5 $0.00006 $0.00238

Measured 8d ago against content hash 16850c8426a1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade B, and why

add-mcp-server scanned grade B with 1 finding 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 8d 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.

Reads MCP configurationmediumAgent snooping

mcp.json carries server URLs and auth tokens; reading it lets a mod discover and abuse other integrations.

cat ~/.aictl/mcp.json 2>/dev/null
.claude/skills/add-mcp-server/SKILL.md · 216 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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. 8d ago First seen · 216 lines · 56 tokens per session scan B 16850c8426a1

Subscribe to this mod's changes

add-mcp-server is a skill published in the GitHub repository pwittchen/aictl (11 stars, last pushed yesterday), with no licence file. It adds 56 tokens to every session and 2,384 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (reads mcp configuration). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.