remotion-best-practices
Pass
Audited by Gen Agent Trust Hub on May 14, 2026
Risk Level: SAFECOMMAND_EXECUTIONEXTERNAL_DOWNLOADSPROMPT_INJECTION
Full Analysis
- [PROMPT_INJECTION]: The skill exhibits several Indirect Prompt Injection surfaces (Category 8). It instructs the agent to fetch and process untrusted external data which could contain malicious instructions.
- Ingestion Points:
rules/calculate-metadata.mdfetches fromprops.dataUrl;rules/display-captions.mdfetches JSON captions from arbitrary URLs;rules/import-srt-captions.mdparses external SRT files;rules/tailwind.mdexplicitly directs the agent to fetch documentation from an external URL using WebFetch to receive instructions;rules/lottie.mdfetches animation data from a remote JSON file. - Boundary Markers: No explicit boundary markers or 'ignore' instructions are provided when interpolating this external data into the agent's context.
- Capability Inventory: The skill enables file system writes (
fs.writeFileSyncinrules/transcribe-captions.md), arbitrary shell command execution (npx remotion ...), and outbound network requests (fetch). - Sanitization: No evidence of sanitization or validation of the fetched content is present in the provided templates.
- [COMMAND_EXECUTION]: The skill frequently uses shell commands for project setup and management.
- Evidence:
SKILL.mdusesnpx create-video@latest;rules/ffmpeg.mdusesnpx remotion ffmpegandnpx remotion ffprobe; multiple rule files usenpx remotion addto install dependencies. - [EXTERNAL_DOWNLOADS]: The skill facilitates the download of external assets and binaries.
- Evidence:
rules/transcribe-captions.mduses@remotion/install-whisper-cppto download and install specific versions ofwhisper.cppand its models to the local file system.SKILL.mdandrules/sfx.mdprovide patterns for fetching remote video and audio assets fromremotion.media. - [CREDENTIALS_UNSAFE]:
rules/voiceover.mdprovides instructions on using theELEVENLABS_API_KEY. It correctly suggests using environment variables rather than hardcoding secrets.
Audit Metadata