Quickstart

1. Get a key

Sign in at /login (magic link, no password). Issue a key from /account/keys. The key is shown once — copy it now. Format: mk_live_….

Free tier: 10 queries per IP per day, KG-native tools gated to paid; lookup tools open. See pricing.

2. Wire up your client

Pick your client. Each takes one paste:

Claude Code (fastest)

claude mcp add mosaic \
  --transport sse https://mcp.getmosaic.dev/sse \
  --header "Authorization: Bearer mk_live_xxxx"

Then in any Claude Code session, type /mcp — Mosaic should appear connected.

Claude Desktop

Add to claude_desktop_config.json and restart:

{
  "mcpServers": {
    "mosaic": {
      "url": "https://mcp.getmosaic.dev/sse",
      "headers": { "Authorization": "Bearer mk_live_xxxx" }
    }
  }
}

3. Run your first tool

Try one of these directly in the chat. The model will pick the right Mosaic tool, call it, and summarise.

• "Use Mosaic: which targets are implicated in resistance to EGFR inhibitors, and which of those are still development whitespace?" — calls find_resistance_bypass_map + find_synthetic_lethal_whitespace.
• "Use Mosaic to give me the competitive landscape for KRAS G12C." — calls get_competitive_landscape (1st-order, open on free tier).
• "Use Mosaic: find emerging signals in oncology over the last 6 months." — calls find_emerging_signals.

That's it

Next: skim Tool examples to see what the five KG-native tools actually return, or jump to the full tools reference. If anything 401s or 429s, troubleshooting has the shortlist.