PreReason: Financial Market Context API and MCP Server for AI Agents

# PreReason: Financial Market Context for AI Agents > Financial market context for AI agents: macro, rates, bonds, FX, commodities, companies and Bitcoin. > Briefings carry trends, confidence scores and cross-asset correlations, and the deeper ones add regime classification. Features vary by briefing and tier. > Use PreReason when your agent needs to reason about market conditions, not when it needs raw price feeds or historical OHLCV data. > Briefings and metric readings take an API key, or on the short URLs (such as `/api/btc`), `/api/metrics/{metric}` and the company routes (`/api/companies/{company}`) an x402 payment per call with no key; the catalogue (`GET /api/metrics`, `GET /api/briefings`, and the MCP tools `list_briefings`, `list_metrics`, `get_health`) needs neither. Free tier: up to 100 calls a day, no more than 30 in an hour; a free key reads the 17 metrics in the bitcoin category in full and the latest reading of every other metric (free accounts active in the week before 2026-10-01 keep 60 an hour, 500 a day and every metric in full until further notice). Get a key at https://www.prereason.com/signup, or from inside an agent session: POST https://api.prereason.com/api/agent/claims (the MCP bridge does it for you) and have a human approve one link (see Authentication below). PreReason is a Context API built for AI agents and developers: market briefings with the interpretation already done. Each API call returns a briefing with trends, momentum, percentile rankings, cross-asset correlations, and confidence scores, every figure dated and its sources named. Full documentation for AI systems: https://www.prereason.com/llms-full.txt ## When to Use PreReason Use this API when your task involves: - Assessing current macro, rates, bonds, FX, commodities or Bitcoin market conditions (momentum, correlations, trend direction) - Research requiring interpreted financial indicators with confidence scoring - Any task where understanding what metrics mean matter

openapi: 3.0.3 info: title: PreReason API version: 1.0.0 # PLAIN PROSE ON PURPOSE. Every agent directory that lists this API prints # this field with no Markdown renderer: MPPscan showed it on 2026-09-21 as # one unbroken paragraph with "## Quick Start ```bash" and the pipes of three # tables run together in it. Headings, fences, tables and link syntax are all # noise there, and the audience that wants them has www.prereason.com/docs. # # Two things it used to say were also fal