Delta Report: anthropics-skills-ip-guard vs anthropics-skills

Canonical Coverage

The slug anthropics-skills (in spec-system/anthropics-skills/) was analyzed by Phase B Batch 13 and provides full 11-file coverage of the anthropics/skills repository.

This delta report focuses on a specific dimension: IP-guard and governance posture of the same repository.

Delta: IP Guard and Governance Findings

No Dedicated IP-Guard Skill

After exhaustive inspection of https://github.com/anthropics/skills, there is no skill named ip-guard in the skills/ directory. The 17 skills present are:

• algorithmic-art, brand-guidelines, canvas-design, claude-api, doc-coauthoring, docx, frontend-design, internal-comms, mcp-builder, pdf, pptx, skill-creator, slack-gif-creator, theme-factory, web-artifacts-builder, webapp-testing, xlsx

The slug name anthropics-skills-ip-guard in the batch manifest appears to reference either:

1. A planned/unreleased skill that does not yet exist in the repo, OR
2. A misidentification — the brand-guidelines skill handles brand asset protection which has IP-adjacent concerns

IP Governance in Existing Skills

The closest IP-protection posture found:

brand-guidelines: This skill enforces corporate brand consistency (logos, colors, typography) — essentially a brand IP enforcement system for Claude outputs. It reads company brand reference files and blocks brand-inconsistent generation.

THIRD_PARTY_NOTICES.md: The repo ships a THIRD_PARTY_NOTICES.md at the root, signaling Anthropic tracks third-party IP in their distributed skills.

License split: The repo uses a deliberate dual-license strategy:

• Example skills (13 skills): Apache-2.0
• Document skills (4 production skills: docx, pdf, pptx, xlsx): Source-available, not open source

This source-available designation for the production document skills is itself an IP governance decision — Anthropic shares the code for reference but retains commercial rights.

Spec-Level IP Provisions

The /spec directory contains the Agent Skills specification. Key IP provisions in the spec:

• Skills are YAML+Markdown format, no code execution required at the skill layer
• Skills can bundle scripts but the SKILL.md metadata + instructions are the IP-sensitive layer
• The spec says skills are portable across any skills-compatible agent — no DRM or lock-in mechanism

Status

Status: no-ip-guard-skill-found

The repo does not contain a dedicated IP guard skill. The batch slug likely anticipated future content. Canonical coverage defers to spec-system/anthropics-skills/ for the full analysis.