OpenCaptions for Grok
io.github.leogaudin/opencaptions
Animated word-by-word captions for your videos, on your computer or your own OpenCaptions server
client:Grok
transport:stdio
runtime:npm
Install OpenCaptions in Grok
.mcp.json (in your project root)
{
"mcpServers": {
"opencaptions": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"opencaptions"
],
"env": {
"OPENCAPTIONS_KEY": "<OPENCAPTIONS_KEY>",
"OPENCAPTIONS_URL": "<OPENCAPTIONS_URL>"
}
}
}
}
Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs