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Media MCP (open source)

Standalone media registry over any S3-compatible bucket — with or without PostWard.

Media MCP is an open-source MCP server that gives your agent upload, download, tagging and collections over direct S3-compatible storage (Wasabi, S3, R2, MinIO). It works standalone; connect PostWard later only if you want campaign linking, approvals and publication history.

Direct mode (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=...

Gateway mode: the same media.* tools are also available through the PostWard MCP when connected — then assets gain campaign linking, approval state and publication history.