Bastion MCP Server

Connect Bastion to Claude, Cursor or any other MCP client and it stops being a tab you switch to. BASTION is a Model Context Protocol (MCP) server that turns any Claude agent into a professional crypto trading desk. Through a single MCP connection (Streamable HTTP or SSE), your agent gains 147 specialized tools for market data. The bastion mcp server is what makes that connection.

Installation

Because this one is hosted, setup is mostly authentication — you point your client at the endpoint and approve access. Nothing runs on your machine, so there is no runtime to keep patched.

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

• bastion_evaluate_risk — Full risk evaluation with 560+ signals, reasoning chain, and action recommendation
• bastion_chat — Natural language conversation with the fine-tuned 72B risk model
• bastion_evaluate_all_positions — Batch risk evaluation of every open position
• bastion_scan_signals — Proactive signal scanner — finds trade opportunities ranked by conviction
• bastion_get_price — Real-time price, 24h change, volume
• bastion_get_market_data — Market cap, circulating supply, dominance, ATH tracking
• bastion_get_klines — OHLCV candlestick data — any timeframe from 1m to 1M
• bastion_get_volatility — Realized volatility, ATR, Bollinger bandwidth, IV percentile
• bastion_get_open_interest — Aggregate open interest across all exchanges
• bastion_get_oi_changes — OI delta over time windows (confirms or denies price moves)
• bastion_get_cvd — Cumulative Volume Delta — buyer vs seller aggression
• bastion_get_orderflow — Order flow imbalance and absorption analysis

Worth knowing first

• Your data travels to the provider's service, so the usual questions apply about what you send and what they retain.
• With 14 tools registered it takes up a noticeable share of the context window; turn it off in projects that never touch Bastion.
• Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Where it fits

Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Bastion's toolset — bastion_evaluate_risk, bastion_chat, bastion_evaluate_all_positions and 11 more — is a fair guide to whether it matches your workflow. It is maintained by bastionfintech-spec; worth a glance at recent repository activity before you build anything load-bearing on it.

SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.