cisco-ios-patterns

cisco-ios-patterns is a skill for Claude Code, Codex from ronmkr/PromptBook. It costs 36 tokens per session (1,168 once invoked), scanned A, a copy of cisco-ios-patterns, Apache-2.0.

A review guide for Cisco IOS and IOS-XE, the operating systems used by many Cisco routers and switches. It covers read-only checks, configuration structure, access-control lists, interfaces, and safe change verification.

In plain words
What is it for?
Use it to review router or switch configuration, choose troubleshooting commands, check ACL placement and masks, prepare change windows, and verify or roll back changes.
Why use it?
It helps you inspect network devices and plan changes while reducing the risk of locking yourself out or leaving an unverified configuration behind.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to review router or switch configuration, choose troubleshooting commands, check ACL placement and masks, prepare change windows, and verify or roll back changes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ronmkr/promptbook/cisco-ios-patterns
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 ronmkr/PromptBook --skill cisco-ios-patterns
Clone the repo
git clone --depth 1 https://github.com/ronmkr/PromptBook

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 cisco-ios-patterns

README.md
[![agentmods](https://agentmods.dev/badge/skills/ronmkr/promptbook/cisco-ios-patterns.svg)](https://agentmods.dev/skills/ronmkr/promptbook/cisco-ios-patterns)
Your own site
<a href="https://agentmods.dev/skills/ronmkr/promptbook/cisco-ios-patterns"><img src="https://agentmods.dev/badge/skills/ronmkr/promptbook/cisco-ios-patterns.svg" alt="Measured on agentmods" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,168 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 92% copy Near-identical to another mod 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 $0.00036 $0.01168
Opus 5 $0.00018 $0.00584
Sonnet 5 $0.00007 $0.00234
Haiku 4.5 $0.00004 $0.00117

Measured 4d ago against content hash efb310b1ecbf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

cisco-ios-patterns 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 4d 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.

Origin

This is a copy

92% identical to cisco-ios-patterns — 26 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/patterns/cisco-ios-patterns/SKILL.md · 164 lines

How it starts

The opening of the file, as written. The whole thing — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cisco IOS Patterns

Use this skill when reviewing Cisco IOS or IOS-XE snippets, building a change-window checklist, or explaining how to collect evidence from a router or switch without making the incident worse.

When to Use

  • Reviewing IOS or IOS-XE configuration before a planned change.
  • Choosing read-only show commands for troubleshooting.
  • Checking ACL wildcard masks and interface direction.
  • Explaining global, interface, routing process, and line configuration modes.
  • Verifying that a change landed in running config and was saved intentionally.

Operating Rules

Treat IOS examples as patterns, not paste-ready production changes. Confirm the platform, interface names, current config, rollback path, and out-of-band access before making changes on a real device.

Prefer this workflow:

  1. Capture current state with read-only commands.
  2. Review the exact candidate config.
  3. Confirm management access cannot be locked out.
  4. Apply the smallest change in a maintenance window.
  5. Re-read state, compare to the baseline, then save only after validation.

Mode Reference

Router> enable
Router# show running-config
Router# configure terminal
Router(config)# interface GigabitEthernet0/1
Router(config-if)# description UPLINK-TO-CORE
Router(config-if)# no shutdown
Router(config-if)# exit
Router(config)# end
Router# show running-config interface GigabitEthernet0/1

running-config is active memory. startup-config is what survives reload. Do not save a change just because a command was accepted; validate behavior first, then use copy running-config startup-config if the change is approved.

Read-Only Collection

show version
show inventory
show processes cpu sorted
show memory statistics
show logging
show running-config | section line vty
show running-config | section interface
show running-config | section router bgp
show ip interface brief
show interfaces
show interfaces status
show vlan brief
show mac address-table
show spanning-tree
show ip route
show ip protocols
show ip access-lists
show route-map
show ip prefix-list

Read the full file on GitHub · 164 lines

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. 4d ago First seen · 164 lines · 36 tokens per session scan A efb310b1ecbf

Subscribe to this mod's changes

cisco-ios-patterns is a skill published in the GitHub repository ronmkr/PromptBook (2 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 36 tokens to every session and 1,168 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to cisco-ios-patterns, differing in 26 lines, and is treated as a copy.

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