Arca

Arca is a private data vault where your AI stores your structured data, semantic memory and skills.

Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "arca-mcp-server": {
      "url": "https://mcp.arca.build"
    }
  }
}

Remote endpoints

https://mcp.arca.buildstreamable-http

https://mcp.arca.buildsse

What it can do

No publishable tool enumeration has been recorded.

Community

Evidence

Oct 30, 2026, 12:02 PM UTCfailed observationversion not recorded—

Oct 21, 2026, 7:32 PM UTCauth requiredversion not recorded—

Oct 21, 2026, 7:32 PM UTCfailed observationversion not recorded—

Oct 13, 2026, 7:34 PM UTCauth requiredversion not recorded—

Oct 13, 2026, 7:34 PM UTCfailed observationversion not recorded—

Oct 6, 2026, 5:03 AM UTCauth requiredversion not recorded—

Oct 6, 2026, 5:03 AM UTCfailed observationversion not recorded—

Sep 28, 2026, 6:02 AM UTCauth requiredversion not recorded—

Sep 28, 2026, 6:02 AM UTCfailed observationversion not recorded—

Sep 22, 2026, 8:33 AM UTCauth requiredversion not recorded—