Agent skill

Operate Mitre Attack

by cyberful in cyberful/cyberful

Use the release-embedded MITRE ATT&CK snapshot as a threat-informed reasoning lens without allowing the framework to constrain novel vulnerability discovery.

AGPL-3.0Auto-check passedSecurity

Install Operate Mitre Attack

skills CLI
$ npx skills add cyberful/cyberful --skill operate-mitre-attack -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install cyberful/cyberful operate-mitre-attack --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/cyberful/cyberful.git skills-src && mkdir -p .claude/skills && cp -r skills-src/cyberful/builtin/skills/operate-mitre-attack .claude/skills/operate-mitre-attack && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
operate-mitre-attack
GitHub stars
135
Token cost
~1.5k tokens
SKILL.md length
589 words
Files
3 (incl. references)
Skills in repo
85
Repo updated
First seen
Licence
AGPL-3.0

At a glance

Use the release-embedded MITRE ATT&CK snapshot as a threat-informed reasoning lens without allowing the framework to constrain novel vulnerability discovery.

  • Tasks that involve Creative writing and fiction
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Operate Mitre Attack is an agent skill from cyberful/cyberful. Use the release-embedded MITRE ATT&CK snapshot as a threat-informed reasoning lens without allowing the framework to constrain novel vulnerability discovery.

Its SKILL.md is about 1.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `agents/openai.yaml` and `references/applicability-and-review.md`).

It sits in Security, covering Creative writing and fiction. The repository describes itself as: Cyberful is an open-source AI Red Team for discovering, exploiting, verifying, and remediating vulnerabilities. The licence is AGPL-3.0.

When your agent uses it

  • Tasks that involve Creative writing and fiction

Example prompts

  • “/operate-mitre-attack”

What it can do on your machine

Read from SKILL.md and the folder at commit ec598a6. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are json).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Operate Mitre Attack loads about 1.5k tokens when it runs, and up to ~1.9k if it reads all its reference files. Until then it costs about 45 tokens; SKILL.md has 589 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~45
When it runs · the whole SKILL.md, loaded when a task matches
~1.5k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from cyberful/cyberful at commit ec598a6, republished under its AGPL-3.0 licence (© cyberful). 589 words, ~1,541 tokens.

Download SKILL.mdSave it as .claude/skills/operate-mitre-attack/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
operate-mitre-attack
description
Use the release-embedded MITRE ATT&CK snapshot as a threat-informed reasoning lens without allowing the framework to constrain novel vulnerability discovery.
metadata.domain
security-tooling
metadata.subdomain
threat-informed-analysis
metadata.triggers
MITRE ATT&CK reasoning, adversary tactic and technique mapping, threat-informed hypothesis organization, ATT&CK relationship analysis, ATT&CK mapping…
metadata.tags
mitre-attack, stix, threat-informed, ttp, zero-day

Operate MITRE ATT&CK

Use mitre_attack as the authoritative source for ATT&CK definitions, identifiers, objects, matrices, and relationships. Call status before relying on the dataset. Never substitute model-training knowledge when the tool is unavailable; record UNAVAILABLE with a rationale instead.

Tool contract

The tool has five mutually exclusive actions. Send only the fields shown for the selected action; an irrelevant field is an invalid request.

json
{"action":"status"}
{"action":"search","query":"Valid Accounts","domains":["enterprise"],"object_types":["technique"],"tactics":["initial-access"],"platforms":["Windows"],"include_revoked":false,"include_deprecated":false,"limit":20}
{"action":"get","identifiers":["T1078.004"],"domains":["enterprise"]}
{"action":"relationships","identifiers":["G0034"],"domains":["enterprise"],"direction":"outgoing","relationship_types":["uses"],"include_indirect":false,"include_revoked":false,"limit":100}
{"action":"matrix","domain":"enterprise","platform":"Windows","tactics":["credential-access"],"include_revoked":false,"include_deprecated":false,"limit":20}
  • status returns ready plus the immutable snapshot manifest, or unavailable with DATASET_UNAVAILABLE. An INVALID_REQUEST means repair the call; it does not mean the dataset is unavailable.
  • search requires query, returns at most 100 objects, combines search tokens with AND, and requires every supplied tactic and platform filter to match. Reuse next_cursor only with the identical query, filters, and limit.
  • get requires 1–20 exact ATT&CK or STIX identifiers and may return more than one domain when domains is omitted. Exact lookup intentionally returns matching revoked or deprecated objects so inspect their flags before mapping.
  • relationships requires 1–20 identifiers. direction is relative to the resolved objects and defaults to both; domains, relationship_types, and include_revoked apply to returned relationships. include_indirect additionally derives outgoing group → software → technique paths marked indirect: true and relationship_type: uses-via-software; request that synthetic type alone when only indirect paths are needed. endpoints_truncated: true means resolve missing endpoint objects with get.
  • matrix requires one domain. Optional tactics accepts tactic ATT&CK IDs, STIX IDs, or exact short names. limit defaults to 5 and caps technique records per tactic at 50; use total_techniques and truncated, then narrow by tactic or resolve selected techniques with get instead of requesting an unnecessarily broad matrix.

Every successful data response includes the complete snapshot manifest, and each object or relationship includes snapshot_id. Preserve the returned ATT&CK ID, STIX ID, domain, snapshot ID, rationale, and primary evidence references in any proposed mapping.

ATT&CK is a reasoning lens and shared vocabulary, not a vulnerability taxonomy, checklist, discovery boundary, or completeness claim. Give zero-days, new primitives, novel exploit chains, business-logic failures, CWE/OWASP classes, application-specific bugs, and behavior absent from ATT&CK the same investigative priority their evidence and impact warrant. The absence of a mapping must never lower severity, confidence, reward potential, priority, phase advancement, finding promotion, or report eligibility. A generic Firefox defect, for example, is not mapped merely because Firefox is a target; credential stuffing may be applicable when the observed behavior supports a technique. Read the applicability and review policy before recording an assessment.

Show full SKILL.md (189 more words)Show less

When ATT&CK applies, use it to organize adversary goals, behaviors, dependencies, and post-compromise paths. Prefer the most specific supported sub-technique, but never infer specificity from a product name or expected attacker behavior. Label direct relationships separately from indirect paths. A mapping is context, not proof that a vulnerability exists.

For a hypothesis, call hypothesis with action: set_attack_assessment, its id, and an assessment: select APPLICABLE, NOT_APPLICABLE, or UNAVAILABLE; state the rationale; and attach evidence_refs to every proposed mapping. New hypotheses remain UNASSESSED until this is done, but missing mappings never block work or handoff. Promotion copies the assessment to the finding. Use finding with the same set_attack_assessment action to revise an already promoted finding directly.

json
{
  "action": "set_attack_assessment",
  "id": "H-EXAMPLE-1",
  "assessment": {
    "applicability": "APPLICABLE",
    "mappings": [
      {
        "attack_id": "T1078.004",
        "stix_id": "attack-pattern--…",
        "domain": "enterprise",
        "rationale": "The preserved behavior shows abuse of an existing cloud account.",
        "evidence_refs": ["raw/evidence/account-abuse.json"]
      }
    ]
  }
}

For NOT_APPLICABLE or UNAVAILABLE, send an empty mappings array and a non-empty assessment rationale. Outside Verify leave review omitted or NOT_REVIEWED. Verify re-queries the object and supplies review plus review_rationale; ACCEPTED or REVISED requires an APPLICABLE assessment with supported mappings.

Verify independently re-queries the same embedded snapshot, checks the evidence for each association, and records ACCEPTED, REVISED, or REJECTED. Report publishes mappings only after that review. Rejection of a mapping does not reject the vulnerability.

© cyberful, AGPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files (references) in cyberful/builtin/skills/operate-mitre-attack of cyberful/cyberful.

  • SKILL.md
  • agents/openai.yaml
  • references/applicability-and-review.md

Open the folder on GitHubat commit ec598a6

Compare with similar skills

Operate Mitre Attack next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Operate Mitre Attack compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Operate Mitre Attack this skillcyberful/cyberful135—~1.5kAutomated safety check: PassAGPL-3.0
Plot Structuredanjdewhurst/story-skills2791 repos~4kAutomated safety check: NotesMIT
Story Multi-Perspective Reviewzenstory-ai/oh-story-claudecode7.4k3 repos~3kAutomated safety check: PassMIT
Story Toolbox Routerzenstory-ai/oh-story-claudecode7.4k1 repos~1.7kAutomated safety check: PassMIT
Short Web Fiction Trend Scanzenstory-ai/oh-story-claudecode7.4k3 repos~1.2kAutomated safety check: PassMIT
InkOS Creative HarnessNarcooo/inkos10k1 repos~1.1kAutomated safety check: PassAGPL-3.0

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Questions about Operate Mitre Attack

What does Operate Mitre Attack do?

Use the release-embedded MITRE ATT&CK snapshot as a threat-informed reasoning lens without allowing the framework to constrain novel vulnerability discovery. Operate Mitre Attack is an agent skill from cyberful/cyberful. Use the release-embedded MITRE ATT&CK snapshot as a threat-informed reasoning lens without allowing the framework to constrain novel vulnerability discovery.

When should I use Operate Mitre Attack?

Operate Mitre Attack fits situations like: tasks that involve Creative writing and fiction.

How do I install Operate Mitre Attack in Claude Code?

Run `npx skills add cyberful/cyberful --skill operate-mitre-attack -a claude-code`. Or copy the skill folder (cyberful/builtin/skills/operate-mitre-attack in cyberful/cyberful) into .claude/skills/operate-mitre-attack in your project. Claude Code loads it when a task matches its description.

How do I install Operate Mitre Attack in Codex?

Run `npx skills add cyberful/cyberful --skill operate-mitre-attack -a codex`. Or copy the skill folder (cyberful/builtin/skills/operate-mitre-attack in cyberful/cyberful) into .agents/skills/operate-mitre-attack in your project. Codex loads it when a task matches its description.

Can I use Operate Mitre Attack in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add cyberful/cyberful --skill operate-mitre-attack -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/operate-mitre-attack, .gemini/skills/operate-mitre-attack, .github/skills/operate-mitre-attack and .opencode/skills/operate-mitre-attack in your project.

What does Operate Mitre Attack need to run?

SKILL.md names no scripts, command-line tools or credentials: Operate Mitre Attack is instructions for the agent only.

Does Operate Mitre Attack access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Operate Mitre Attack safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Operate Mitre Attack use?

Operate Mitre Attack is published under the AGPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Operate Mitre Attack use?

About 1.5k tokens (SKILL.md is roughly 6.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 400 tokens, read only when the agent opens those files.

What are the alternatives to Operate Mitre Attack?

Skills that share tags, products or a category with Operate Mitre Attack: Plot Structure (danjdewhurst/story-skills, 279 stars), Story Multi-Perspective Review (zenstory-ai/oh-story-claudecode, 7.4k stars), Story Toolbox Router (zenstory-ai/oh-story-claudecode, 7.4k stars) and Short Web Fiction Trend Scan (zenstory-ai/oh-story-claudecode, 7.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Operate Mitre Attack?

cyberful (a GitHub organization) maintains it in cyberful/cyberful, which has 135 GitHub stars. The repository holds 85 skills in this directory. The repository was last updated on August 24, 2026.

Source: cyberful/cyberful on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.