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 agentmods add commands/efranceschetti/festo-codesys-mcp/error-decodegit clone --depth 1 https://github.com/efranceschetti/festo-codesys-mcpWrote 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/commands/efranceschetti/festo-codesys-mcp/error-decode)<a href="https://agentmods.dev/commands/efranceschetti/festo-codesys-mcp/error-decode"><img src="https://agentmods.dev/badge/commands/efranceschetti/festo-codesys-mcp/error-decode.svg" alt="Measured on agentmods" 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 | $0.00022 | $0.00164 |
| Opus 5 | $0.00011 | $0.00082 |
| Sonnet 5 | $0.00004 | $0.00033 |
| Haiku 4.5 | $0.00002 | $0.00016 |
Grade A, and why
error-decode 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 3d 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.
What it actually says
Arguments received: $ARGUMENTS (expected: code + optional context, e.g. 0x8001 CMMT-AS startup or 16#FF87; if no clear code, ask the user).
Follow the workflow defined in the error-diagnosis skill (.claude/skills/error-diagnosis/SKILL.md) using these arguments.
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.
- 3d ago First seen · 10 lines · 22 tokens per session scan A a267e23632a2
error-decode is a command published in the GitHub repository efranceschetti/festo-codesys-mcp (1 stars, last pushed 8d ago), licensed MIT. It adds 22 tokens to every session and 164 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.
Other commands, from other repositories
observe
部屋を能動的に観察する。3つの基本ブロックを自由に選びながらループし、受動的なスナップショットではなく発見のある観察を行う。.
eol-report
EOL/EOS risk report — devices, OS versions, and firmware approaching or past end-of-life/end-of-support, prioritized by criticality.
gum-search
BM25 search the embedded catalog (TTY table, pipe JSON).
rvcsi-calibrate
Learn a v0 per-subcarrier baseline (mean amplitude) from a .rvcsi capture.
hw-check
Load Cursor Skill .cursor/skills/hw-check.md, then execute canonical command /hw:check with any user-provided arguments.
iot
This API allows you to manage your IoT hubs and devices.