How do I install Crystal?

Pick a client above and copy the generated config. Cursor and VS Code also have a deep link when the server can run locally or remotely.

No. Registry-listed is not the same as vendor-official. Read the methodology for the difference.

How is the trust score calculated?

This listing scores 52 (Fair). The formula is published on the methodology page.

Crystal MCP Server — Install for Claude, Cursor & VS Code | MCPpedia

Name: Crystal MCP Server
Author: erahq

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

RegistryRemoteerahq

52Fair

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "erahq-crystal": {
      "url": "https://crystal-api-118881845105.us-east5.run.app/mcp"
    }
  }
}

This server does not declare environment variables.

78Good

Local-first memory for AI agents: recall with sources, answer checks, documents, mesh, governance.

Registryqualixar249 stars1.3K/wk

77Good

Session memory for coding agents: local-first recall, drift detection, on-device inference.