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One shared memory for every AI you use, in plain Markdown files you own.
Callosium is an MCP server entry in ChatHome Skills, sourced from Official MCP Registry and scored 70/100. As a Model Context Protocol server, it exposes tools that MCP-compatible LLM clients such as Claude, Cursor, and Copilot can call directly, extending an agent's reach beyond its built-in capabilities. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding Callosium to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.
npx -y callosium@0.1.18Review the upstream source before running this command.
{
"_meta": {
"io.modelcontextprotocol.registry/official": {
"status": "active",
"isLatest": true,
"updatedAt": "2026-08-04T13:25:39.544493Z",
"publishedAt": "2026-08-04T13:25:39.544493Z",
"statusChangedAt": "2026-08-04T13:25:39.544493Z"
}
},
"server": {
"name": "io.github.callosium/callosium",
"title": "Callosium",
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"version": "0.1.18",
"packages": [
{
"version": "0.1.18",
"transport": {
"type": "stdio"
},
"identifier": "callosium",
"registryType": "npm",
"packageArguments": [
{
"type": "positional",
"value": "mcp",
"description": "Serve the brain over MCP on stdio."
},
{
"name": "--brain",
"type": "named",
"format": "filepath",
"isRequired": true,
"description": "Path to your brain folder. Run 'callosium' first: the dashboard creates or adopts it."
},
{
"name": "--agent",
"type": "named",
"isRequired": true,
"description": "Agent id for this AI client, issued by the dashboard's Agents screen."
},
{
"name": "--token",
"type": "named",
"isSecret": true,
"isRequired": true,
"description": "Token for this agent, issued alongside the id. Scopes which folders this AI may read."
}
],
"environmentVariables": [
{
"name": "CALLOSIUM_MODEL_DIR",
"format": "filepath",
"description": "Optional. Where the local embedding model is cached. Defaults to a per-user cache directory."
}
]
}
],
"repository": {
"url": "https://github.com/callosium/callosium",
"source": "github"
},
"websiteUrl": "https://callosium.com",
"description": "One shared memory for every AI you use, in plain Markdown files you own."
}
}