I
io.github.callosium/callosium
callosium
One shared memory for every AI you use, in plain Markdown files you own.
No known CVEs
Apache-2.0 license
Actively maintained
Last commit 22d ago
Works with most clients
Transport: stdio, sse
1 tool · ~28 tok
Grade A · 0.0% of 200K ctx
MCPpedia last refreshed this data
io.github.callosium/callosium is an MCP server that one shared memory for every AI you use, in plain Markdown files you own. Its tool list has not been published yet over stdio and sse, requires no API key, and scores 87/100 on MCPpedia's security, maintenance and efficiency rubric.
Step 1
Install in your client
Config is the same across clients — only the file and path differ.
CD
Supported in Claude Desktopstdio, sse · Node 18+
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"io-github-callosium-callosium": {
"args": [
"-y",
"callosium"
],
"command": "npx"
}
}
}Are you the author?
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Read me
What io.github.callosium/callosium does
Every AI you use forgets you. Callosium gives them one shared memory, in plain files you own.
Test This Server
Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.
npx -y 'callosium' 2>&1 | head -1 && echo "✓ Server started successfully"
After testing, let us know if it worked:
Scored, not listed
Why this score
Five weighted categories — click any category to see the underlying evidence.
Score breakdown
87/100across 5 weighted dimensions
0255075100
30
12
20
15
10
−13
Security
Maintenance
Efficiency
Documentation
Compatibility
Categoriesclick a row to see evidence
Security
OSV.devNo known CVEs.
Checked callosium against OSV.dev.
Inventory
Tools (1)
Click any tool to inspect its schema.
~28 tokens total
Community
Reviews
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Frequently Asked Questions
- Is io.github.callosium/callosium safe to use?
- io.github.callosium/callosium has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under Apache-2.0.
- How do I install io.github.callosium/callosium?
- io.github.callosium/callosium supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
- What can io.github.callosium/callosium do?
- io.github.callosium/callosium provides 1 tool: Results. See the full tools list on the server page for descriptions and parameters.
- What AI clients work with io.github.callosium/callosium?
- io.github.callosium/callosium is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse transport.
- Is io.github.callosium/callosium actively maintained?
- io.github.callosium/callosium is actively maintained — last commit was 22 days ago. It has 8 GitHub stars.
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Community
Discussion
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