How do I install Crystal?

Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does Crystal need an API key?

No required environment variable is listed on this record.

Crystal

by io.github.EraHQ

Self-curating memory your AI tools share: provenance, verified citations, and trust tiers.

Power your agent

Add this server

The publisher's own URL. Not a PlugMCP endpoint.

Server URL

https://crystal-api-118881845105.us-east5.run.app/mcp

Provider

Add in Claude

Claude opens with the name and URL filled in. You still confirm it there.

Claude Code

claude mcp add --transport http io.github.erahq-crystal https://crystal-api-118881845105.us-east5.run.app/mcp

Run in a terminal.

Claude Desktop

{
  "mcpServers": {
    "io.github.erahq-crystal": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://crystal-api-118881845105.us-east5.run.app/mcp"
      ]
    }
  }
}

claude_desktop_config.json

Step-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Related MCP

Related skills

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Questions

How do I install Crystal?: Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.
Does Crystal need an API key?: No required environment variable is listed on this record.
What transport does Crystal use?: Crystal is reached over HTTP.
When was Crystal last checked?: Last checked 2026-10-16. Self-curating memory your AI tools share: provenance, verified citations, and trust tiers.

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