blocklens-mcp-server

MCP (Model Context Protocol) server for Blocklens Bitcoin on-chain analytics. Connect your AI agent to 109 on-chain metrics computed from raw blockchain data — no API wrappers, no delays.

Quick Start

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "blocklens": {
      "command": "npx",
      "args": ["-y", "blocklens-mcp-server"],
      "env": {
        "BLOCKLENS_API_KEY": "blk_your_key_here"
      }
    }
  }
}

Config file location:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json

Cursor / Windsurf

Add to your MCP config (.cursor/mcp.json):

{
  "blocklens": {
    "command": "npx",
    "args": ["-y", "blocklens-mcp-server"],
    "env": {
      "BLOCKLENS_API_KEY": "blk_your_key_here"
    }
  }
}

Demo Mode (No API Key)

Works without an API key — you get 60 days of history for basic-tier metrics. Get an API key at blocklens.co/api-keys for full access.

Available Tools (15)

Metrics Coverage (109 total)

Market Data (27 metrics)

Price, OHLC, volume, market cap, drawdown from ATH, 6 realized volatility windows (1W, 2W, 1M, 3M, 6M, 1Y), cycle performance, and individual cycle tracks from lows, ATHs, and halvings.

Supply (16 metrics)

Circulating supply, LTH/STH supply, cost basis distribution heatmap, and 12 age cohort supplies (<24h through 10y+) for HODL Waves analysis.

Valuation (41 metrics)

Realized cap, realized price, MVRV (aggregate + LTH/STH), thermo cap, delta cap, average cap, balanced price, investor cap, market cap/thermo cap ratio, and 24 age cohort realized prices and caps.

Profitability (12 metrics)

NUPL, unrealized/realized P/L, SOPR — each with aggregate, LTH, and STH breakdowns.

Coin Days (11 metrics)

Coin Days Destroyed (CDD), binary CDD, supply-adjusted CDD, liveliness, vaultedness, dormancy, dormancy flow, net coin days, coin days accumulated, transferred price, transfer volume.

Blockchain (2 metrics)

Block height, blocks mined.

Chart Rendering

The render_chart tool generates PNG charts inline in the conversation.

Quick examples:

render_chart({ metric: "price", days: 365 })
render_chart({ template: "mvrv_ratio" })
render_chart({ metrics: ["lth_supply", "sth_supply"], style: "area" })
render_chart({ metric: "dormancy_flow", overlay: "price" })
render_chart({ template: "realized_volatility", days: 730 })

Annotations — reference lines and areas:

render_chart({
  metric: "lth_mvrv",
  reference_lines: [
    { "y": 3.5, "label": "Overheated", "stroke": "#ef4444", "dash": "3 3" }
  ],
  reference_areas: [
    { "y1": 0, "y2": 0.85, "label": "Undervalued", "fill": "#22c55e", "fill_opacity": 0.15 }
  ]
})

Example Prompts

• "What's Bitcoin's current MVRV ratio and what does it say about valuation?"
• "Show me realized volatility — is short-term vol higher than long-term?"
• "Chart dormancy flow with price overlay for the last 2 years"
• "Compare LTH and STH supply trends over 90 days"
• "Are long-dormant coins waking up? Check liveliness and CDD"
• "Show cycle performance from each halving — are we tracking historical patterns?"
• "What's the current NUPL level? Is the market in euphoria or fear?"

Access Tiers

Links

• Blocklens
• Full Documentation
• Metrics Reference
• API Reference
• Get API Key
• MCP Protocol

License

MIT