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Bullrun: Global Stock & UCITS ETF Research

org.bull-run/bullrun in the official MCP registry. Endpoint https://mcp.bull-run.org/mcp. Source: github.com/ferinator/bullrun-mcp.

The registry describes it as: Free, no sign-up: global stocks, UCITS ETF costs and overlap, company risk and macro, all dated.

Connect it

The endpoint answers MCP over HTTP; that is how we read it. Add it to your client:

claude mcp add --transport http bullrun https://mcp.bull-run.org/mcp

{
  "mcpServers": {
    "bullrun": {
      "url": "https://mcp.bull-run.org/mcp"
    }
  }
}

code --add-mcp '{"name":"bullrun","type":"http","url":"https://mcp.bull-run.org/mcp"}'

Some servers ask you to sign in the first time a client connects, or want a key from the people who run them; the server's own docs say which.

Let Claude Code check servers as it adds them

With the free lazaretto-guard plugin installed, when Claude Code adds a server for you or writes one into an MCP config, the plugin reads the server's tools first and asks you if one of our rules matches. Install it, restart Claude Code, then ask it to run the command above.

claude plugin marketplace add jamesdfinance-dev/lazaretto-plugins
claude plugin install lazaretto-guard@lazaretto-plugins

Tools it advertises

screen_stocks search_stocks find_stock_peers get_stock_price_history get_company_news search_etfs screen_etfs get_etf_index_group get_etf_fund get_etf_filter_options get_etf_snapshot get_etf_holdings get_etf_timeseries get_etf_exposures get_etf_risk compare_etfs simulate_etf_cost get_stock_metrics compare_stocks get_financial_history get_quality_moat_metrics get_forward_estimates get_operating_kpis get_revenue_breakdown get_earnings_call_transcript list_research_shortlist save_research_shortlist list_portfolios get_portfolio_context get_portfolio_analytics create_portfolio_draft create_position_draft create_portfolio_from_positions get_capabilities get_company_risk get_company_relationships compare_company_exposures get_corporate_calendar get_company_risk_history get_company_data_coverage screen_risk_board get_risk_movers get_global_markets_overview get_country_macro get_macro_indicators get_macro_history get_valuation_model screen_valuation_model

Tool changes

We compare every full read of this server with the one before. No change in what its tools say has been seen since we started keeping this record on 2026-10-30.

Fingerprint of its tools at our last full read (2026-10-30): 28722c3009d801eb. A client can hash the tools it is served the same way and compare; the full value and a hash per tool are in this page as JSON.

Run this server? Show the check in your README

The badge reflects the latest weekly read:

[![MCP tool check](https://lazaretto.dev/mcp-registry/org-bull-run-bullrun/badge.svg)](https://lazaretto.dev/mcp-registry/org-bull-run-bullrun)

How this was checked

Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.

To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.

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