festo-codesys-mcp: Command for Claude Code

.claude/commands/start-fb.md

start-fb is a command for Claude Code from efranceschetti/festo-codesys-mcp. It costs 21 tokens per session (159 once invoked), scanned A, original, MIT.

A command for creating a new Function Block, a reusable unit of PLC control logic. Before creating one, it checks whether a duplicate already exists and loads the project's coding conventions.

In plain words
What is it for?
Use it to start a new Function Block from its name and short description while following the repository's structured-text coding guidance.
Why use it?
It helps prevent duplicate blocks and keeps new PLC code aligned with the project's existing rules.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: reads .claude/ paths; names the AskUserQuestion tool.

This is efranceschetti/festo-codesys-mcp's own configuration. It tells Claude Code how to work on festo-codesys-mcp 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 festo-codesys-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to efranceschetti/festo-codesys-mcp. 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/efranceschetti/festo-codesys-mcp/main/.claude/commands/start-fb.md
Clone the repo
git clone --depth 1 https://github.com/efranceschetti/festo-codesys-mcp

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 start-fb

README.md
[![agentmods](https://agentmods.dev/badge/commands/efranceschetti/festo-codesys-mcp/start-fb.svg)](https://agentmods.dev/commands/efranceschetti/festo-codesys-mcp/start-fb)
Your own site
<a href="https://agentmods.dev/commands/efranceschetti/festo-codesys-mcp/start-fb"><img src="https://agentmods.dev/badge/commands/efranceschetti/festo-codesys-mcp/start-fb.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 159 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 original 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 $0.00021 $0.00159
Opus 5 $0.00010 $0.00079
Sonnet 5 $0.00004 $0.00032
Haiku 4.5 $0.00002 $0.00016

Measured 6d ago against content hash f1104d47d6dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

start-fb 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 6d 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.

.claude/commands/start-fb.md · 10 lines

What it actually says

Arguments received: $ARGUMENTS (expected: FB name + one-line description; if empty, ask the user).

Follow the workflow defined in the writing-st-code skill (.claude/skills/writing-st-code/SKILL.md) using these arguments.

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. 6d ago First seen · 10 lines · 0 tokens per session scan A f1104d47d6dc

Subscribe to this mod's changes

start-fb is a command published in the GitHub repository efranceschetti/festo-codesys-mcp (1 stars, last pushed 11d ago), licensed MIT. It adds 21 tokens to every session and 159 once invoked, about $0.0001 per session on Opus 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 2026-08-31.