> ## Documentation Index
> Fetch the complete documentation index at: https://rekko.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Market Sentiment

> Aggregate market sentiment from price momentum and volume trends.



## OpenAPI

````yaml GET /v1/sentiment
openapi: 3.1.0
info:
  title: Rekko AI — Prediction Market Intelligence
  description: >-
    The brain for prediction market trading. Deep AI research, Bayesian causal
    decomposition, portfolio-aware strategy signals, cross-platform arbitrage,
    and execution guidance — all in one API. Covers Kalshi, Polymarket,
    Robinhood, and Coinbase. Clean flat JSON designed for developers and
    autonomous trading agents.
  contact:
    name: Rekko AI
    url: https://rekko.ai/
  license:
    name: Proprietary
  version: 1.0.0
servers:
  - url: https://api.rekko.ai
security: []
tags:
  - name: Markets
    description: Prediction market listings, history, resolution, and execution guidance
  - name: Insights
    description: AI-powered research insights with causal decomposition
  - name: Strategy
    description: >-
      Actionable trading signals with Kelly-derived position sizing and causal
      decomposition
  - name: Portfolio
    description: Portfolio-aware strategy, correlation analysis, and hedge recommendations
  - name: Arbitrage
    description: Cross-platform arbitrage detection (Kalshi vs Polymarket vs Robinhood)
  - name: Analytics
    description: Calibration metrics, sentiment, and performance tracking
  - name: Streaming
    description: Real-time SSE event stream and webhooks
  - name: Consensus
    description: Agent trade aggregation and crowd probability
paths:
  /v1/sentiment:
    get:
      tags:
        - Analytics
      summary: Market sentiment snapshot
      description: Aggregate market sentiment from price momentum and volume trends.
      operationId: /v1/sentiment
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SentimentSnapshot'
components:
  schemas:
    SentimentSnapshot:
      properties:
        fear_greed_index:
          type: integer
          maximum: 100
          minimum: 0
          title: Fear Greed Index
          description: 0=extreme fear, 50=neutral, 100=extreme greed
        market_regime:
          type: string
          enum:
            - risk_on
            - risk_off
            - neutral
          title: Market Regime
          description: Overall market regime
        volume_trend:
          type: string
          enum:
            - rising
            - falling
            - stable
          title: Volume Trend
          description: Aggregate volume trend
        spread_trend:
          type: string
          enum:
            - tightening
            - widening
            - stable
          title: Spread Trend
          description: Average bid-ask spread trend
        active_market_count:
          type: integer
          minimum: 0
          title: Active Market Count
          description: Active markets tracked
        dominant_category:
          type: string
          title: Dominant Category
          description: Category with highest volume
        top_movers:
          items:
            $ref: '#/components/schemas/TopMover'
          type: array
          title: Top Movers
          description: Markets with largest price moves (top 5)
        generated_at:
          type: string
          format: date-time
          title: Generated At
          description: When this snapshot was generated
      type: object
      required:
        - fear_greed_index
        - market_regime
        - volume_trend
        - spread_trend
        - active_market_count
        - dominant_category
      title: SentimentSnapshot
      description: Aggregate market sentiment derived from price and volume trends.
      example:
        active_market_count: 847
        dominant_category: crypto
        fear_greed_index: 62
        generated_at: '2026-03-21T14:30:00Z'
        market_regime: risk_on
        spread_trend: stable
        top_movers:
          - market_id: KXBTC-100K-MAR26
            platform: kalshi
            price_change_24h: 0.12
            title: Will Bitcoin exceed $100K in March 2026?
            volume_24h: 892000
            yes_price: 0.45
        volume_trend: rising
    TopMover:
      properties:
        market_id:
          type: string
          title: Market Id
          description: Market identifier
        platform:
          type: string
          title: Platform
          description: kalshi, polymarket, robinhood, or coinbase
        title:
          type: string
          title: Title
          description: Market title
        yes_price:
          type: number
          maximum: 1
          minimum: 0
          title: Yes Price
          description: Current YES price
        price_change_24h:
          type: number
          title: Price Change 24H
          description: Absolute price change in last 24h
        volume_24h:
          type: number
          minimum: 0
          title: Volume 24H
          description: 24h volume in USD
      type: object
      required:
        - market_id
        - platform
        - title
        - yes_price
        - price_change_24h
        - volume_24h
      title: TopMover
      description: A market with significant recent price movement.
      example:
        market_id: KXBTC-100K-MAR26
        platform: kalshi
        price_change_24h: 0.12
        title: Will Bitcoin exceed $100K in March 2026?
        volume_24h: 892000
        yes_price: 0.45

````