Enables using Cloudflare R2 S3-compatible storage as a media registry backend, providing upload, download, tagging, and collection management tools.
Enables using MinIO S3-compatible storage as a media registry backend, providing upload, download, tagging, and collection management tools.
Enables using Wasabi S3-compatible storage as a media registry backend, providing upload, download, tagging, and collection management tools.
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@postward-media-mcp upload the file promo.mp4 to the 'campaign' collection"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
Standalone media registry MCP over any S3-compatible bucket (Wasabi, AWS S3, Cloudflare R2, MinIO…). Give your AI agent upload, download, tagging and collections — with or without PostWard.
The agent thinks. PostWard orchestrates and publishes. Media lives where you want it.
// MCP client config
{
"mcpServers": {
"media": {
"command": "npx",
"args": ["-y", "postward-media-mcp"],
"env": {
"MEDIA_MCP_MODE": "direct",
"S3_ENDPOINT": "https://s3.us-east-1.wasabisys.com",
"S3_BUCKET": "my-bucket",
"S3_REGION": "us-east-1",
"S3_ACCESS_KEY": "...",
"S3_SECRET_KEY": "..."
}
}
}
}Metadata (names, tags, collections) lives portably in the bucket under
.media-mcp/index.json. Large bodies never cross the MCP payload: tools
return presigned PUT/GET URLs with short expiry.
Related MCP server: MinIO MCP Server
The same media.* tool surface is also available through the
PostWard MCP when connected — assets
gain campaign linking, approval state and publication history.
media_capabilities · media_list · media_search · media_create_upload ·
media_create_download_url · media_delete · media_tag · media_untag ·
media_create_collection · media_add_to_collection · media_remove_from_collection
MIT
This server cannot be deployed
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