Community Cybersecurity Agent Skills

mukul975/Anthropic-Cybersecurity-Skills is an independent community library of cybersecurity Agent Skills. The README states that it contains 754 structured skills across 26 security domains, mapped to MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, MITRE D3FEND, and NIST AI RMF.

Use this listing for the community skills library itself. It is not affiliated with Anthropic PBC; the upstream README explicitly labels it as an independent community project.

Knowledge Freshness

Security frameworks, tools, cloud audit APIs, detection logic, malware-analysis methods, and attack techniques change frequently. The README references current framework coverage, but users should verify framework versions, tool commands, cloud APIs, detections, and legal constraints before applying a workflow to real evidence or live systems.

Use these skills as structured workflow guidance for authorized security work, then check current vendor docs, security-tool manuals, organizational policy, and local evidence-handling requirements.

Retrieval Sources

This listing is grounded in:

• The upstream repository README.
• The upstream license file.
• Representative skill files for memory forensics, Azure activity-log analysis, and phishing email-header investigation.
• The public project website.
• Current GitHub repository metadata.

Core Workflow

Install the skills library:

npx skills add mukul975/Anthropic-Cybersecurity-Skills

Update installed skills:

npx skills update

Then invoke it with an authorized, scoped security task:

Use the community cybersecurity Agent Skills for this authorized incident-response investigation.

Before executing any workflow, confirm the target scope, authorization, allowed tools, evidence-handling rules, and whether the work is defensive analysis, training, audit, or a sanctioned assessment.

Capability Scope

The README describes 26 security domains:

The repository structure described by the README uses per-skill folders with SKILL.md, optional references/, optional scripts/, and optional assets/ for report templates or checklists.

Production Rules

Use these skills with security-operations discipline:

• Confirm authorization before loading or executing a skill against any system, sample, account, network, log source, cloud resource, or customer artifact.
• Prefer defensive and investigative workflows over exploit execution.
• Keep malware samples, memory dumps, disk images, pcap files, and secrets embedded in evidence in controlled environments.
• Treat scripts and commands from community skills as untrusted until reviewed.
• Record evidence provenance and preserve chain-of-custody where required.
• Redact sensitive data before sharing summaries or generated reports.
• Separate training-lab use from production incident response.
• Do not publish exploit instructions, live secrets, customer indicators, or internal defensive gaps in public artifacts.

Use Cases

• Use a DFIR skill to guide memory forensics with Volatility 3 in an authorized incident investigation.
• Ask an agent to map a finding to MITRE ATT&CK, NIST CSF, ATLAS, D3FEND, or AI RMF categories for reporting.
• Guide SOC triage workflows for phishing, suspicious authentication, cloud log analysis, or endpoint alerts.
• Use cloud security skills to inspect Azure, AWS, or GCP evidence inside an approved tenant or lab.
• Use training-lab scenarios to teach analysts how to structure investigation steps without exposing production data.

Source Review

• The README states the project is an independent community project and not affiliated with Anthropic PBC.
• The README describes 754 structured cybersecurity skills across 26 domains.
• The README says skills follow the agentskills.io open standard and map to MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, MITRE D3FEND, and NIST AI RMF.
• Representative SKILL.md files include YAML frontmatter with domain, subdomain, tags, version, author, license, and framework mappings.
• The memory-forensics skill includes prerequisites and a stepwise workflow around Volatility 3.
• The repository reports Apache-2.0 license terms.

Duplicate Review

Checked current content/skills/, content/mcp/, content/agents/, content/tools/, open pull requests, and repository-wide content for mukul975/Anthropic-Cybersecurity-Skills, Community Cybersecurity Agent Skills, Anthropic Cybersecurity Skills, cybersecurity Agent Skills, MITRE ATT&CK skills, DFIR AI skills, SOC agent skills, and agentskills cybersecurity. Existing security content covers narrower MCP servers, scanners, and review agents, but no dedicated community cybersecurity Agent Skills library entry, exact source URL duplicate, target file, or open duplicate PR was found.

Disclosure

Editorial listing. No paid placement or affiliate link is used. This is an independent community project by Mahipal Nehra and is not affiliated with Anthropic PBC.