blocklens-mcp-server

MCP (Model Context Protocol) server for Blocklens Bitcoin on-chain analytics. Connect your AI agent to 127 on-chain metrics computed from raw blockchain data — no API wrappers, no delays.

Quick Start

Remote Access (No Install)

Connect directly to the hosted endpoint — no packages, no local setup:

Claude.ai (Browser): Settings → Connectors → Add → URL: https://mcp.blocklens.co

Claude Desktop / Cursor / Windsurf (via mcp-remote):

{
  "mcpServers": {
    "blocklens": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.blocklens.co"]
    }
  }
}

Any MCP HTTP client: POST to https://mcp.blocklens.co (Streamable HTTP transport)

Local Install

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)

Tool	Description
list_metrics	List all 127 available metrics with categories and tiers
search_metrics	Search metrics by keyword
get_metric	Get full definition of a single metric
get_categories	List metric categories with counts
get_prices	BTC daily OHLC, market cap, volume, drawdown, realized volatility (1W–1Y)
get_holder_supply	LTH/STH supply breakdown, circulating supply
get_holder_valuation	Realized cap/price, MVRV, thermo cap, delta cap, balanced price, investor cap
get_holder_profit	NUPL, realized/unrealized P/L, SOPR — LTH/STH breakdowns (Pro tier)
get_cohort_metrics	Age cohort supply, realized cap, realized price (12 age brackets)
get_utxo_history	UTXO set breakdown by age cohort
get_coindays	Coin Days Destroyed, liveliness, vaultedness, dormancy, dormancy flow
get_blockchain	Block height, blocks mined
get_cycle_performance	Cycle performance indexed from lows, ATHs, halvings
get_latest_metrics	Latest snapshot across all categories
render_chart	Render any metric as PNG with annotations and templates

Metrics Coverage (127 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.

ETF Analytics (11 metrics)

Total BTC holdings, AUM, net/cumulative flows, cumulative money flow, ETF realized price, US Spot ETF realized price, US Spot cumulative money flow, BTC dominance, US BTC holdings, ETF premium average.

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

Tier	History	Metrics	Daily Requests
Demo (no key)	60 days	Basic (grade 0)	Unlimited
Pro ($50/mo)	Unlimited	All grade 0–1	10,000
Enterprise ($900/mo)	Unlimited	All grade 0–2	100,000

Links

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

License

MIT