scoping-an-incident-from-a-single-indicator

scoping-an-incident-from-a-single-indicator is a skill for Claude Code, Codex from meltedinhex/analyst-ai-pack. It costs 75 tokens per session (731 once invoked), scanned A, original, Apache-2.0.

An incident-scoping workflow that starts with one clue—such as a file hash, IP address, domain, or account—and traces related activity across security records. It builds a timeline and identifies what systems and accounts are affected.

In plain words
What is it for?
Use it to investigate alerts, follow connections between hosts and accounts, find related infrastructure, and define an incident’s blast radius.
Why use it?
It prevents you from reacting to the first alert alone and missing other parts of the intrusion. You get a clearer boundary for the incident before containment.

Skill for Claude CodeCodex

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

Good fit Use it to investigate alerts, follow connections between hosts and accounts, find related infrastructure, and define an incident’s blast radius.

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Install with agentmods
npx agentmods add skills/meltedinhex/analyst-ai-pack/scoping-an-incident-from-a-single-indicator
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 meltedinhex/analyst-ai-pack --skill scoping-an-incident-from-a-single-indicator
Clone the repo
git clone --depth 1 https://github.com/meltedinhex/analyst-ai-pack

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 scoping-an-incident-from-a-single-indicator

README.md
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Your own site
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/scoping-an-incident-from-a-single-indicator"><img src="https://agentmods.dev/badge/skills/meltedinhex/analyst-ai-pack/scoping-an-incident-from-a-single-indicator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 75 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 731 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 $0.00075 $0.00731
Opus 5 $0.00037 $0.00365
Sonnet 5 $0.00015 $0.00146
Haiku 4.5 $0.00007 $0.00073

Measured 7d ago against content hash ea3ba46a863b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

scoping-an-incident-from-a-single-indicator 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 7d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/analyst.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.

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.

skills/scoping-an-incident-from-a-single-indicator/SKILL.md · 92 lines

How it starts

The opening of the file, as written. The whole thing — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Scoping an Incident from a Single Indicator

When to Use

  • A detection fired on one indicator (a hash, IP, domain, or account) and you must find the full extent of the activity.
  • You need to bound the incident — which hosts, accounts, and infrastructure are involved — before containment.
  • You are building an investigative timeline from a single starting point.

Do not use premature containment on the first indicator alone — acting before scoping can tip off the adversary and leave footholds you have not yet found.

Prerequisites

  • Access to relevant data sources (EDR, proxy, DNS, auth logs) and the pivoting/enrichment skills.

Workflow

Step 1: Characterize the seed indicator

Establish what the indicator is, when it was first/last seen, and on which host/account it appeared.

Step 2: Pivot to related artifacts

Expand outward: the file's other hosts, the IP's other connections, the account's other logons, the domain's other resolvers. Each pivot yields new indicators to pivot again.

python scripts/analyst.py scope events.json --seed <sha256-or-ip>

Step 3: Build the timeline

Order all discovered events chronologically to reconstruct the activity and find the earliest sign (candidate patient zero / initial access).

Step 4: Bound the scope

Define affected vs. unaffected explicitly: list involved hosts/accounts/infrastructure and the evidence for inclusion, and note what was checked and cleared.

Step 5: Hand off to containment

Produce the scoped picture (entities, timeline, indicators) so containment is coordinated and complete rather than piecemeal.

Validation

  • Every included entity has explicit evidence tying it to the incident.
  • The timeline has a defensible earliest event (initial access candidate).
  • Cleared entities are documented, so scope is bounded, not open-ended.

Pitfalls

  • Containing the first host before pivoting, alerting the adversary and missing other footholds.
  • Pivoting only one hop and missing second-order related entities.
  • No timeline, so initial access and dwell time stay unknown.

Read the full file on GitHub · 92 lines

Files

What ships with it

3 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. 7d ago First seen · 92 lines · 75 tokens per session scan A ea3ba46a863b

Subscribe to this mod's changes

scoping-an-incident-from-a-single-indicator is a skill published in the GitHub repository meltedinhex/analyst-ai-pack (22 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 75 tokens to every session and 731 once invoked, about $0.0004 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 2026-09-03.

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