ffmpeg Eval
===========

Status: failed
Score: 77/100
Risk: high
Decision: do_not_auto_install
Policy: block
Reason: Permission surface: shell or command execution, filesystem or document access

Install:
npx skills add calesthio/OpenMontage --skill ffmpeg

Required checks:
- PASS Task fit: Task wording matches this skill metadata.
- PASS Install path: Install handoff is available.
- PASS Install command safety: standard package or runtime install path
- WARN Trust score: Good trust signals with a few areas worth checking before rollout.
- WARN Audit score: Needs review
- WARN Agent safety gate: Sparse or mixed signals. Useful for discovery, but not for autonomous installation.
- PASS License clarity: AGPL-3.0
- FAIL Permission surface: shell or command execution, filesystem or document access

Warnings:
- Trust score: Good trust signals with a few areas worth checking before rollout.
- Audit score: Needs review
- Agent safety gate: Sparse or mixed signals. Useful for discovery, but not for autonomous installation.
- README/SKILL.md completeness: Public metadata needs stronger README/SKILL.md context
- High-risk permission hints: Shell or command execution
- Permission surface may require sandboxing
- SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.
- No security guidance is provided about quoting/escaping user-controlled filenames or treating media inputs as untrusted, which is important when an LLM generates shell commands.
- The skill does not mention output overwrite behavior; depending on environment, ffmpeg may prompt or overwrite files, and agents should explicitly use -n or -y as appropriate.
- Permission surface needs review: shell or command execution, filesystem or document access
- Permission surface: shell or command execution, filesystem or document access

Validation plan:
1. Inspect repository, README/SKILL.md, license, and recent commits before production use.
2. Install in an isolated workspace or sandbox with no production secrets available.
3. Run the smallest representative task and record files touched, commands run, network access, and outputs.
4. Compare the selected skill against at least one alternative when the eval status is review or failed.
5. Promote only after the agent reports a successful verification result and unresolved warnings are accepted.

Do not use when:
- teams that need a vendor-supported SLA
- production agents without a repository review
- SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.
- High-risk permission hints: Shell or command execution
- Permission surface may require sandboxing
- No security guidance is provided about quoting/escaping user-controlled filenames or treating media inputs as untrusted, which is important when an LLM generates shell commands.
- The skill does not mention output overwrite behavior; depending on environment, ffmpeg may prompt or overwrite files, and agents should explicitly use -n or -y as appropriate.
- Permission surface needs review: shell or command execution, filesystem or document access

URLs:
- Skill: https://www.openagentskill.com/skills/calesthio-ffmpeg
- Audit: https://www.openagentskill.com/skills/calesthio-ffmpeg/audit
- JSON: https://www.openagentskill.com/api/agent/evals?slug=calesthio-ffmpeg