drop-mcp
A tiny remote MCP server with a single tool, drop, that saves a file from local content or a URL into a mounted directory, acting as a file dropper for watch-folder importers.
README
drop-mcp
A tiny remote MCP server with a single tool, drop, that saves a file — from
local content or a URL — into a directory it has mounted. It doesn't know or
care what happens to the file afterward; that's the mounted directory owner's
job (e.g. a watch-folder importer).
Tool
drop
| Parameter | Required | Description |
|---|---|---|
filename |
yes | Destination filename, e.g. example.epub. No path separators. |
content_base64 |
one of these two | Base64-encoded file content. |
source_url |
one of these two | URL to fetch server-side. |
Returns { status: "dropped", filename, bytes } on success.
Configuration
See .env.example. DROP_MCP_TOKEN is required — the server checks
Authorization: Bearer <token> on every /mcp request. DROP_DIR is where
the mounted target directory should be pointed to inside the container.
Run
Prebuilt image (recommended for deployment)
Every GitHub release publishes a
container image to GHCR via .github/workflows/release.yml — no local build needed:
docker run -p 3000:3000 \
-e DROP_MCP_TOKEN=... \
-v /host/path/to/target/dir:/drop \
ghcr.io/transmitt0r/drop-mcp:latest # or a pinned version, e.g. :v0.1.0
Or in a docker-compose.yml:
services:
drop-mcp:
image: ghcr.io/transmitt0r/drop-mcp:v0.1.0
restart: unless-stopped
environment:
DROP_MCP_TOKEN: "..."
DROP_DIR: /drop
volumes:
- /host/path/to/target/dir:/drop
ports:
- "3000:3000"
From source
pnpm install
pnpm run build
DROP_MCP_TOKEN=... DROP_DIR=/drop pnpm start
Or build the image yourself:
docker build -t drop-mcp .
docker run -p 3000:3000 \
-e DROP_MCP_TOKEN=... \
-v /host/path/to/target/dir:/drop \
drop-mcp
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