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Media Caption
by
whitejohnk-26
· GitHub ↗
· v1.0.0
· MIT-0
70
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0
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0
Active Installs
1
Versions
Install in OpenClaw
/install media-caption
Description
add video clips into captioned video files with this skill. Works with MP4, MOV, AVI, WebM files up to 500MB. content creators use it for adding synchronized...
Usage Guidance
This skill uploads any video files you give it to a third-party API (mega-api-prod.nemovideo.ai) and uses a NEMO_TOKEN to authenticate. If you don't provide a token it will request a short-lived anonymous token and still upload your media. Before installing/using: (1) don't upload sensitive or private videos unless you trust the service; (2) prefer using an account token you control (NEMO_TOKEN) rather than anonymous tokens; (3) note the skill will save session IDs/tokens for ongoing jobs — avoid pasting tokens into chat; (4) the skill has no homepage or provenance and the registry metadata slightly differs from the SKILL.md (config path listed in the frontmatter), so verify the service and terms of use independently if you need stronger assurance.
Capability Analysis
Type: OpenClaw Skill
Name: media-caption
Version: 1.0.0
The media-caption skill is a functional integration for a cloud-based video processing service (nemovideo.ai). It provides clear instructions for an AI agent to handle authentication, file uploads, and video rendering via a specific API. While it includes logic for platform detection based on installation paths and requires an environment variable (NEMO_TOKEN), these actions are consistent with the stated purpose of providing a cloud-rendering service and maintaining attribution headers. No evidence of data exfiltration, malicious execution, or harmful prompt injection was found.
Capability Assessment
Purpose & Capability
The skill's name/description (add captions to video) aligns with its runtime instructions: it calls a remote rendering/captioning API and uploads media. Requesting a single service token (NEMO_TOKEN) is appropriate for this purpose.
Instruction Scope
The SKILL.md is instruction-only and directs the agent to upload user files and interact with the nemovideo.ai API (session creation, SSE, render polling). It does not instruct the agent to read unrelated system files or arbitrary credentials. It does instruct detection of an install path to set X-Skill-Platform and references saving session tokens; these are reasonable for attribution/state but give the skill discretion to read agent-related paths.
Install Mechanism
No install spec or external downloads — instruction-only behavior minimizes disk persistence and installer risk.
Credentials
Only NEMO_TOKEN is declared as required, which fits the API usage. However, SKILL.md frontmatter also lists a config path (~/.config/nemovideo/) while the registry metadata reported no required config paths — a minor metadata inconsistency. The skill will also generate an anonymous token if no token is present, meaning media can be uploaded under an ephemeral account.
Persistence & Privilege
Skill is not always-enabled and uses normal autonomous invocation. It does not request elevated platform privileges or claim to modify other skills or system-wide settings.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install media-caption - After installation, invoke the skill by name or use
/media-caption - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
- Initial release of Media Caption — Add Captions to Videos.
- Upload video clips (MP4, MOV, AVI, WebM up to 500MB) and generate synchronized captions using AI; export 1080p MP4 files.
- Authentication handled automatically with support for anonymous free tokens (100 credits/7 days).
- Interact via simple chat commands for uploading, editing, checking status, balance, and exporting.
- All processing runs on cloud GPUs, typically completing in 30-90 seconds per video.
- Robust error handling and session management built-in for a smooth user experience.
Metadata
Frequently Asked Questions
What is Media Caption?
add video clips into captioned video files with this skill. Works with MP4, MOV, AVI, WebM files up to 500MB. content creators use it for adding synchronized... It is an AI Agent Skill for Claude Code / OpenClaw, with 70 downloads so far.
How do I install Media Caption?
Run "/install media-caption" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Media Caption free?
Yes, Media Caption is completely free, licensed under MIT-0. You can download, install and use it at no cost.
Which platforms does Media Caption support?
Media Caption is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Media Caption?
It is built and maintained by whitejohnk-26 (@whitejohnk-26); the current version is v1.0.0.
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