building-ioc-defanging-and-sharing-pipeline

building-ioc-defanging-and-sharing-pipeline is a skill for Claude Code, Codex from Youngmaidainon/Agent-Level-Up. It costs 93 tokens per session (3,649 once invoked), scanned A, original, MIT.

A guide to processing indicators of compromise—such as URLs, IP addresses, domains, email addresses, and file hashes—before sharing them. It makes them safer for people to read and packages them in STIX, a standard format for security data.

In plain words
What is it for?
Use it to normalize and remove duplicates, create defanged indicators, produce STIX bundles, and share them through TAXII, MISP, or email.
Why use it?
It prevents someone from accidentally opening a malicious link while keeping indicators usable by security tools.

Skill for Claude CodeCodex

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

Good fit Use it to normalize and remove duplicates, create defanged indicators, produce STIX bundles, and share them through TAXII, MISP, or email.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/youngmaidainon/agent-level-up/building-ioc-defanging-and-sharing-pipeline
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 Youngmaidainon/Agent-Level-Up --skill building-ioc-defanging-and-sharing-pipeline
Clone the repo
git clone --depth 1 https://github.com/Youngmaidainon/Agent-Level-Up

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 building-ioc-defanging-and-sharing-pipeline

README.md
[![agentmods](https://agentmods.dev/badge/skills/youngmaidainon/agent-level-up/building-ioc-defanging-and-sharing-pipeline/github.svg)](https://agentmods.dev/skills/youngmaidainon/agent-level-up/building-ioc-defanging-and-sharing-pipeline)
Your own site
<a href="https://agentmods.dev/skills/youngmaidainon/agent-level-up/building-ioc-defanging-and-sharing-pipeline"><img src="https://agentmods.dev/badge/skills/youngmaidainon/agent-level-up/building-ioc-defanging-and-sharing-pipeline/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 building-ioc-defanging-and-sharing-pipeline

Your own site · 80×15
<a href="https://agentmods.dev/skills/youngmaidainon/agent-level-up/building-ioc-defanging-and-sharing-pipeline"><img src="https://agentmods.dev/badge/skills/youngmaidainon/agent-level-up/building-ioc-defanging-and-sharing-pipeline.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 93 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,649 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00093 $0.03649
Opus 5 $0.00046 $0.01825
Sonnet 5 $0.00019 $0.00730
Haiku 4.5 $0.00009 $0.00365

Measured 8d ago against content hash 9e591f420bf2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

building-ioc-defanging-and-sharing-pipeline scanned grade A 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.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/agent.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

from urllib.parse import urlparse, unquote
cyber-security/ctf/building-ioc-defanging-and-sharing-pipeline/SKILL.md · 381 lines

How it starts

The opening of the file, as written. The whole thing — 381 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Building IOC Defanging and Sharing Pipeline

Overview

IOC defanging modifies potentially malicious indicators (URLs, IP addresses, domains, email addresses) to prevent accidental clicks or execution while preserving readability for analysis and sharing. This skill covers building an automated pipeline that ingests raw IOCs from multiple sources, normalizes and deduplicates them, applies defanging for safe human consumption, converts them to STIX 2.1 format for machine consumption, and distributes through TAXII servers, MISP instances, and email reports.

When to Use

  • When deploying or configuring building ioc defanging and sharing pipeline capabilities in your environment
  • When establishing security controls aligned to compliance requirements
  • When building or improving security architecture for this domain
  • When conducting security assessments that require this implementation

Prerequisites

  • Python 3.9+ with defang, ioc-fanger, stix2, requests, validators libraries
  • MISP instance or TAXII server for automated sharing
  • Understanding of IOC types: IPv4/IPv6, domains, URLs, email addresses, file hashes
  • Familiarity with STIX 2.1 Indicator patterns and TLP marking definitions
  • Access to threat intelligence feeds for IOC ingestion

Key Concepts

IOC Defanging Standards

Defanging replaces active protocol and domain components to prevent execution: http:// becomes hxxp://, https:// becomes hxxps://, dots in domains/IPs become [.], @ in emails becomes [@]. This is critical for sharing IOCs in reports, emails, Slack channels, and paste sites where auto-linking could trigger network connections to malicious infrastructure.

IOC Normalization

Raw IOCs from different sources come in inconsistent formats. Normalization involves converting to lowercase, removing trailing slashes and whitespace, extracting domains from URLs, resolving URL encoding, validating format correctness, and deduplicating across sources.

STIX 2.1 Indicator Patterns

Read the full file on GitHub · 381 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 381 lines · 93 tokens per session scan A 9e591f420bf2

Subscribe to this mod's changes

building-ioc-defanging-and-sharing-pipeline is a skill published in the GitHub repository Youngmaidainon/Agent-Level-Up (3 stars, last pushed 17d ago), licensed MIT. It adds 93 tokens to every session and 3,649 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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