Every metric arrives with a signal interpretation, a factor-level confidence breakdown, momentum and a percentile rank; briefings add regime classification and a causal narrative on top. The catalogue is browsable before you commit to anything, since the listing tools need no key and each briefing declares its tier. The cross-asset coverage is framed around one asset in particular — the equity, volatility and dollar indices are described as BTC correlation signals rather than as coverage of those markets in their own right.
A market context service that returns interpretation rather than raw series: 18 briefings and 30 metrics across Bitcoin, macro and calculated categories, each arriving with a signal and a confidence score. It is hosted, so a client that supports MCP OAuth connects by URL and gets a free account provisioned in the flow.
- get_context returns a briefing for the domain you name — Bitcoin, macro, cross-asset or FX — carrying trend signals, confidence scores, regime classification and causal narratives, in markdown or JSON.
- get_metric returns one metric with its signal interpretation, 7d, 30d and 90d trend analysis, a confidence score broken down by factor, momentum and a percentile ranking.
- list_briefings covers the 18 live briefings and names the tier each sits behind, so you can see what a subscription would add before buying it.
- list_metrics covers 30 metrics across the bitcoin, macro and calculated categories — Bitcoin price and hash rate, the Fed balance sheet, M2 supply, Treasury yields, net liquidity, and the cross-asset indices used as BTC correlation signals — filterable by category or search.
- The free tier is six briefings rather than a trial: a quick BTC check, BTC context with liquidity and hash ribbon, a macro snapshot, the cross-asset correlation matrix, volume and mempool pulse, and difficulty-adjustment pace.
- get_health reports the API's status, version and account tier.
A PreReason account — free to create, and a client that supports MCP OAuth will provision the key during connection with nothing to paste. Otherwise put the key in an Authorization header on the hosted URL, or run the stdio bridge on Node.js 18 or newer with PREREASON_API_KEY in the environment. Discovery needs none of it: listing briefings, listing metrics and the health check all answer unauthenticated. Content beyond the free six needs the Basic tier at $19.99 a month or Pro at $49.99.
One command plus a key — npx @prereason/mcp, then supply credentials