Calibre ebook library server: search, read content, curate metadata, semantic search, gated writes.
Connect Runs on your machine
claude mcp add calibre-mcp -e CALIBRE_MCP_SERVER_URL=<CALIBRE_MCP_SERVER_URL> -e CALIBRE_MCP_LIBRARY=<CALIBRE_MCP_LIBRARY> -e CALIBRE_MCP_ENABLE_WRITE=<CALIBRE_MCP_ENABLE_WRITE> -e CALIBRE_MCP_CALIBREDB_PATH=<CALIBRE_MCP_CALIBREDB_PATH> -- npx -y [email protected]{
"mcpServers": {
"calibre-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"CALIBRE_MCP_SERVER_URL": "<CALIBRE_MCP_SERVER_URL>",
"CALIBRE_MCP_LIBRARY": "<CALIBRE_MCP_LIBRARY>",
"CALIBRE_MCP_ENABLE_WRITE": "<CALIBRE_MCP_ENABLE_WRITE>",
"CALIBRE_MCP_CALIBREDB_PATH": "<CALIBRE_MCP_CALIBREDB_PATH>"
}
}
}
}{
"mcpServers": {
"calibre-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"CALIBRE_MCP_SERVER_URL": "<CALIBRE_MCP_SERVER_URL>",
"CALIBRE_MCP_LIBRARY": "<CALIBRE_MCP_LIBRARY>",
"CALIBRE_MCP_ENABLE_WRITE": "<CALIBRE_MCP_ENABLE_WRITE>",
"CALIBRE_MCP_CALIBREDB_PATH": "<CALIBRE_MCP_CALIBREDB_PATH>"
}
}
}
}{
"servers": {
"calibre-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"CALIBRE_MCP_SERVER_URL": "<CALIBRE_MCP_SERVER_URL>",
"CALIBRE_MCP_LIBRARY": "<CALIBRE_MCP_LIBRARY>",
"CALIBRE_MCP_ENABLE_WRITE": "<CALIBRE_MCP_ENABLE_WRITE>",
"CALIBRE_MCP_CALIBREDB_PATH": "<CALIBRE_MCP_CALIBREDB_PATH>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
CALIBRE_MCP_SERVER_URLOptional | Calibre Content Server base URL (default http://localhost:8080) |
CALIBRE_MCP_LIBRARYOptional | Library name; empty = auto-detect the server's default library |
CALIBRE_MCP_ENABLE_WRITEOptional | Set to 1 to enable the write tools (update/bulk-update/add/remove); off by default |
CALIBRE_MCP_CALIBREDB_PATHOptional | Path to the calibredb binary; empty = auto-discover the standard install location |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 12 Nov 2026 |
| Last updated | 12 Nov 2026 |
| Registry name | io.github.caelum29/calibre-mcp |
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