skill-070

skill-070 is a skill for Claude Code, Codex from legendtkl/agentic-skill-router. It costs 58 tokens per session (2,152 once invoked), scanned A, a copy of azure-bgp, MIT.

A guide to diagnosing unstable BGP routing and leaked network paths in Azure Virtual WAN-style hub-and-spoke networks. BGP is the protocol networks use to exchange route information.

In plain words
What is it for?
Use it to detect BGP oscillation and route leaks, identify valley-free routing violations, and choose policy-level fixes involving routing intent, UDRs, communities, or filtering.
Why use it?
It helps explain repeated route changes and unexpected traffic transit caused by preference cycles or incorrect route export policies.

Skill for Claude CodeCodex

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

Good fit Use it to detect BGP oscillation and route leaks, identify valley-free routing violations, and choose policy-level fixes involving routing intent, UDRs, communities, or filtering.

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Install with agentmods
npx agentmods add skills/legendtkl/agentic-skill-router/skill-070
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 legendtkl/agentic-skill-router --skill skill-070
Clone the repo
git clone --depth 1 https://github.com/legendtkl/agentic-skill-router

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 skill-070

README.md
[![agentmods](https://agentmods.dev/badge/skills/legendtkl/agentic-skill-router/skill-070/github.svg)](https://agentmods.dev/skills/legendtkl/agentic-skill-router/skill-070)
Your own site
<a href="https://agentmods.dev/skills/legendtkl/agentic-skill-router/skill-070"><img src="https://agentmods.dev/badge/skills/legendtkl/agentic-skill-router/skill-070/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 skill-070

Your own site · 80×15
<a href="https://agentmods.dev/skills/legendtkl/agentic-skill-router/skill-070"><img src="https://agentmods.dev/badge/skills/legendtkl/agentic-skill-router/skill-070.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,152 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 95% 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 $0.00058 $0.02152
Opus 5 $0.00029 $0.01076
Sonnet 5 $0.00012 $0.00430
Haiku 4.5 $0.00006 $0.00215

Measured 6d ago against content hash 03f1d1d6d0cb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

skill-070 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.

Origin

This is a copy

95% identical to azure-bgp — 3 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.

experiments/dci-compare/skillrouter-skills/skill-070/SKILL.md · 234 lines

How it starts

The opening of the file, as written. The whole thing — 234 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Azure BGP Oscillation & Route Leak Analysis

Analyze and resolve BGP oscillation and BGP route leaks in Azure Virtual WAN–style hub-and-spoke topologies (and similar cloud-managed BGP environments).

This skill trains an agent to:

  • Detect preference cycles that cause BGP oscillation
  • Identify valley-free violations that constitute route leaks
  • Propose allowed, policy-level mitigations (routing intent, export policy, communities, UDR, ingress filtering)
  • Reject prohibited fixes (disabling BGP, shutting down peering, removing connectivity)

The focus is cloud-correct reasoning, not on-prem router manipulation.

When to Use This Skill

Use this skill when a task involves:

  • Azure Virtual WAN, hub-and-spoke BGP, ExpressRoute, or VPN gateways
  • Repeated route flapping or unstable path selection
  • Unexpected transit, leaked prefixes, or valley-free violations
  • Choosing between routing intent, UDRs, or BGP policy fixes
  • Evaluating whether a proposed "fix" is valid in Azure

Core Invariants (Must Never Be Violated)

An agent must internalize these constraints before reasoning:

  • ❌ BGP sessions between hubs cannot be administratively disabled by customers as it's owned by azure
  • ❌ Peering connections cannot be shut down as a fix as it break all other traffic running on the connections
  • ❌ Removing connectivity is not a valid solution as it break all other traffic running
  • ✅ Problems must be fixed using routing policy, not topology destruction

Any solution violating these rules is invalid.

Expected Inputs

Tasks using this skill typically provide small JSON files:

File Meaning
topology.json Directed BGP adjacency graph
relationships.json Economic relationship per edge (provider, customer, peer)
preferences.json Per-ASN preferred next hop (may cause oscillation)
route.json Prefix and origin ASN
route_leaks.json Evidence of invalid propagation
possible_solutions.json Candidate fixes to classify

Read the full file on GitHub · 234 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. 6d ago First seen · 234 lines · 58 tokens per session scan A 03f1d1d6d0cb

Subscribe to this mod's changes

skill-070 is a skill published in the GitHub repository legendtkl/agentic-skill-router (5 stars, last pushed 3mo ago), licensed MIT. It adds 58 tokens to every session and 2,152 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to azure-bgp, differing in 3 lines, and is treated as a copy.

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