Local-first AI PKM memory for coding conversations.
Connect Runs on your machine
claude mcp add chatcrystal -e CHATCRYSTAL_BASE_URL=<CHATCRYSTAL_BASE_URL> -e CHATCRYSTAL_API_TOKEN=<CHATCRYSTAL_API_TOKEN> -- npx -y [email protected]{
"mcpServers": {
"chatcrystal": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"CHATCRYSTAL_BASE_URL": "<CHATCRYSTAL_BASE_URL>",
"CHATCRYSTAL_API_TOKEN": "<CHATCRYSTAL_API_TOKEN>"
}
}
}
}{
"mcpServers": {
"chatcrystal": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"CHATCRYSTAL_BASE_URL": "<CHATCRYSTAL_BASE_URL>",
"CHATCRYSTAL_API_TOKEN": "<CHATCRYSTAL_API_TOKEN>"
}
}
}
}{
"servers": {
"chatcrystal": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"CHATCRYSTAL_BASE_URL": "<CHATCRYSTAL_BASE_URL>",
"CHATCRYSTAL_API_TOKEN": "<CHATCRYSTAL_API_TOKEN>"
}
}
}
}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 |
|---|---|
CHATCRYSTAL_BASE_URLOptional | Optional ChatCrystal Core URL. Leave empty to use the local default at http://localhost:3721. |
CHATCRYSTAL_API_TOKENOptional, secret | Optional token for a protected ChatCrystal Cloud or remote instance. |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 11 Nov 2026 |
| Last updated | 11 Nov 2026 |
| Registry name | io.github.ZengLiangYi/chatcrystal |
More developer tools servers See all
Listing data from the official MCP registry. Status and tools from NestDaddy's daily check. Browse all MCP servers.