> ## 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. # Execution Guidance > Optimal trade execution analysis from bid/ask spread patterns. ## OpenAPI ````yaml GET /v1/markets/{platform}/{market_id}/execution 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/markets/{platform}/{market_id}/execution: get: tags: - Markets summary: Get trade execution guidance description: Optimal trade execution analysis from bid/ask spread patterns. operationId: /v1/markets/{platform}/{market_id}/execution parameters: - name: platform in: path required: true schema: type: string examples: - kalshi title: Platform - name: market_id in: path required: true schema: type: string examples: - KXAGICO-COMP-28Q1 title: Market Id responses: '200': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/ExecutionGuidance' '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' components: schemas: ExecutionGuidance: 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 default: '' current_bid: anyOf: - type: number maximum: 1 minimum: 0 - type: 'null' title: Current Bid description: Current best YES bid current_ask: anyOf: - type: number maximum: 1 minimum: 0 - type: 'null' title: Current Ask description: Current best YES ask current_spread: anyOf: - type: number minimum: 0 - type: 'null' title: Current Spread description: Current bid-ask spread avg_spread_48h: anyOf: - type: number minimum: 0 - type: 'null' title: Avg Spread 48H description: Average spread over last 48h spread_percentile: anyOf: - type: number maximum: 100 minimum: 0 - type: 'null' title: Spread Percentile description: >- Current spread percentile vs 48h history (lower = tighter than usual) spread_trend: type: string title: Spread Trend description: 'Spread direction: ''tightening'', ''widening'', or ''stable''' default: stable liquidity_score: type: integer maximum: 100 minimum: 0 title: Liquidity Score description: Liquidity quality 0-100 based on spread + volume default: 50 estimated_slippage_pct: type: number minimum: 0 title: Estimated Slippage Pct description: Estimated slippage as percentage of price default: 0 recommendation: type: string title: Recommendation description: LIMIT_ORDER, MARKET_ORDER, or WAIT default: MARKET_ORDER suggested_limit_price: anyOf: - type: number maximum: 1 minimum: 0 - type: 'null' title: Suggested Limit Price description: Suggested limit price (midpoint adjusted for spread direction) rationale: type: string title: Rationale description: Explanation of the recommendation default: '' upcoming_event: anyOf: - type: string - type: 'null' title: Upcoming Event description: Nearby event that may affect spreads hours_to_event: anyOf: - type: number minimum: 0 - type: 'null' title: Hours To Event description: Hours until the next relevant event tick_count: type: integer minimum: 0 title: Tick Count description: Number of ticks analyzed default: 0 generated_at: type: string format: date-time title: Generated At description: When this guidance was generated type: object required: - market_id - platform title: ExecutionGuidance description: Optimal trade execution analysis from tick data. example: avg_spread_48h: 0.03 current_ask: 0.64 current_bid: 0.6 current_spread: 0.04 estimated_slippage_pct: 0.8 generated_at: '2026-03-21T14:30:00Z' hours_to_event: 18.5 liquidity_score: 68 market_id: KXFED-26MAR19 platform: kalshi rationale: >- Spread is wider than usual (72nd percentile). Use a limit order at 0.61 to capture midpoint. Avoid market orders — slippage ~0.8% at current depth. recommendation: LIMIT_ORDER spread_percentile: 72 spread_trend: widening suggested_limit_price: 0.61 tick_count: 96 title: Will the Fed cut rates at the March 2026 meeting? upcoming_event: FOMC Statement HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array title: Detail type: object title: HTTPValidationError ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Location msg: type: string title: Message type: type: string title: Error Type input: title: Input ctx: type: object title: Context type: object required: - loc - msg - type title: ValidationError ````