Callosium
One shared memory for every AI you use, in plain Markdown files you own.
Install
registry version 0.1.18
npm
npx -y callosiumnpm
npx -y callosium@0.1.18
Setup by client
Pick your client — the config below is generated for this server (local stdio). Copy respects the “Pin version” switch above.
claude_desktop_config.json
{
"mcpServers": {
"callosium": {
"command": "npx",
"args": [
"-y",
"callosium"
]
}
}
}{
"mcpServers": {
"callosium": {
"command": "npx",
"args": [
"-y",
"callosium@0.1.18"
]
}
}
}Format verified against the official Claude Desktop docs ↗.
terminal
claude mcp add callosium -- npx -y callosium
claude mcp add callosium -- npx -y callosium@0.1.18
Format verified against the official Claude Code docs ↗.
.cursor/mcp.json
{
"mcpServers": {
"callosium": {
"command": "npx",
"args": [
"-y",
"callosium"
]
}
}
}{
"mcpServers": {
"callosium": {
"command": "npx",
"args": [
"-y",
"callosium@0.1.18"
]
}
}
}Format verified against the official Cursor docs ↗.
.vscode/mcp.json
{
"servers": {
"callosium": {
"command": "npx",
"args": [
"-y",
"callosium"
]
}
}
}{
"servers": {
"callosium": {
"command": "npx",
"args": [
"-y",
"callosium@0.1.18"
]
}
}
}Format verified against the official VS Code docs ↗.
mcp_config.json
{
"mcpServers": {
"callosium": {
"command": "npx",
"args": [
"-y",
"callosium"
]
}
}
}{
"mcpServers": {
"callosium": {
"command": "npx",
"args": [
"-y",
"callosium@0.1.18"
]
}
}
}Format verified against the official Windsurf docs ↗.
Environment variables
Defined in the server's official registry manifest. Required secrets are shown as <YOUR_…> placeholders in the configs above.
CALLOSIUM_MODEL_DIR— Optional. Where the local embedding model is cached. Defaults to a per-user cache directory.
GitHub
⭐ 10 stars · 最近更新于 60 天前 · Apache-2.0 license
About this server
Callosium Every AI you use forgets you. Callosium gives them one shared memory, in plain files you own. You explain your project to Claude. Then you explain it again to ChatGPT. Then again to Cursor. Every chat starts from zero, and everything you have ever told an AI is scattered across apps that d…
Summary from the project README — github.com/callosium/callosium
Distributed as npm, listed under Developer Tools. Review our MCP security guide before granting access to real data.
Frequently asked questions
What does the Callosium MCP server do?
Callosium Every AI you use forgets you. Callosium gives them one shared memory, in plain files you own. You explain your project to Claude. Then you explain it again to ChatGPT. Then again to Cursor. Every chat starts from zero, and everything you have ever told an AI is scattered across apps that d
How do I install Callosium?
Run the install command shown above, then paste the config for your client (Claude Desktop, Claude Code, Cursor, VS Code or Windsurf) into its MCP settings and restart the client.
Is Callosium free to use?
The MCP server itself is free to install. The source is public on https://github.com/callosium/callosium. Any third-party service it calls may require its own API key and account.
Which clients support Callosium?
Any MCP-compatible client can use it, including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf and custom agents.
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