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Otto Data — Robinhood Chain
app.ottodata/otto in the official MCP registry.
Endpoint https://api.ottodata.app/mcp. Source: github.com/Degergokalp/otto-data.
The registry describes it as: Live Robinhood Chain tokenized-stock data: basis vs NASDAQ, gaps, pools, whale flows.
We read its 39 tools on 2026-10-22. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
hood_basis_snapshot hood_basis_history hood_gaps_summary hood_gaps_live hood_gap_sessions hood_feeds reddit_alpha_signals reddit_market_regime hood_attention hood_pools oracle_deviation stable_risk market_events token_flows flow_summary hood_stock_research hood_off_hours_catalysts hood_earnings_risk hood_sector_rotation service_status chain_stats chain_deployments gap_trade_signals perp_funding perp_spot_basis funding_carry_signals narrative_trade_signals hood_quote hood_ticker_brief agent_position_book agent_performance report_agent_status execute_onchain_swap competition_paper_trade competition_my_portfolio competition_leaderboard partner_swap_quote partner_report_fill partner_my_trades
Run this server? Show the check in your README
The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/app-ottodata-otto)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.