Callosium
One shared memory for every AI you use, in plain Markdown files you own.
Install
npmstdio
npx -y callosium Client config (Claude Desktop, Cursor, Windsurf and most MCP clients)
{
"mcpServers": {
"io-github-callosium-callosium": {
"command": "npx",
"args": [
"-y",
"callosium"
]
}
}
}Source: official MCP Registry record · registry name io.github.callosium/callosium · published 2026-08-04 · updated 2026-08-04. Not an endorsement; review the code before connecting it to anything sensitive.