> ## Documentation Index > Fetch the complete documentation index at: https://polyquantlab.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Get Arb Live > Real-time arbitrage opportunities between Polymarket binary markets and Binance spot. See backtest/arb_engine.py for the math: - Polymarket YES mid → market's implied probability - Binance spot + 5s-bar realised σ → log-normal model probability - Mismatch + EV after fees + spread filter → tradeable rows Returns rows sorted by expected net PnL per share (highest first). Empty list when no edges clear the filters — that's normal during quiet markets or when bots are actively repricing. ## OpenAPI ````yaml get /v1/arb/live openapi: 3.1.0 info: title: PolyQuantLab API version: 0.1.0 description: >- Sub-second Polymarket orderbook data, walk-the-book backtests, paper trading, and the live arb audit. Same endpoints the PolyQuantLab dashboard uses internally — Bearer-token auth, JSON-over-HTTPS, predictable pagination. contact: email: contact@polyquantlab.com url: https://polyquantlab.com/contact license: name: Proprietary servers: - url: https://api.polyquantlab.com description: Production security: - ApiKeyAuth: [] paths: /v1/arb/live: get: summary: Get Arb Live description: |- Real-time arbitrage opportunities between Polymarket binary markets and Binance spot. See backtest/arb_engine.py for the math: - Polymarket YES mid → market's implied probability - Binance spot + 5s-bar realised σ → log-normal model probability - Mismatch + EV after fees + spread filter → tradeable rows Returns rows sorted by expected net PnL per share (highest first). Empty list when no edges clear the filters — that's normal during quiet markets or when bots are actively repricing. operationId: get_arb_live_v1_arb_live_get parameters: - name: min_edge_pp in: query required: false schema: type: number maximum: 0.5 minimum: 0 description: >- Minimum |market_yes − model_yes| in probability points. Below this, the mismatch is dominated by fees and noise. 0.04 = 4pp is the practical floor. default: 0.04 title: Min Edge Pp description: >- Minimum |market_yes − model_yes| in probability points. Below this, the mismatch is dominated by fees and noise. 0.04 = 4pp is the practical floor. - name: vol_window_sec in: query required: false schema: type: integer maximum: 3600 minimum: 60 description: >- Realised-vol estimation window in seconds. Shorter = more responsive to current regime; longer = less noisy. default: 600 title: Vol Window Sec description: >- Realised-vol estimation window in seconds. Shorter = more responsive to current regime; longer = less noisy. - name: tickers in: query required: false schema: type: string description: Comma-separated tickers to scan. default: BTC,ETH,SOL title: Tickers description: Comma-separated tickers to scan. - name: event_types in: query required: false schema: type: string description: Comma-separated Polymarket event types to scan. default: 5m,15m,1h,4h,daily_up_down title: Event Types description: Comma-separated Polymarket event types to scan. - name: limit in: query required: false schema: type: integer maximum: 200 minimum: 1 default: 50 title: Limit responses: '200': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/GetArbLiveVArbLiveGetResponse' example: as_of: '2026-06-06T03:54:11.842913+00:00' count: 1 tickers: - BTC - ETH - SOL event_types: - 5m - 15m - 1h - 4h - daily_up_down min_edge_pp: 0.04 opportunities: - market_id: 0x4a8f31...c2 ticker: BTC event_type: 5m question: Will Bitcoin price be above $109,500 at 04:00 UTC? polymarket_slug: bitcoin-up-or-down-june-6-4am-et resolution_at: '2026-06-06T04:00:00+00:00' seconds_to_resolution: 47 underlying_now: 109842.5 strike_price: 109500 log_diff: 0.00312 sigma_annual: 0.482 sigma_tau: 0.00046 market_yes_mid: 0.815 model_yes_prob: 0.999 mismatch_mid: 0.184 yes_bid: 0.81 yes_ask: 0.82 no_bid: 0.18 no_ask: 0.19 fill_price: 0.82 fill_spread: 0.01 direction: BUY_YES edge_per_share: 0.18 est_fee_per_share: 0.013 expected_pnl_per_share: 0.167 tier: endgame '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' components: schemas: GetArbLiveVArbLiveGetResponse: type: object properties: as_of: type: string format: date-time description: Server timestamp when the response was generated. count: type: integer format: int64 tickers: type: array items: type: string event_types: type: array items: type: string min_edge_pp: type: number format: double opportunities: type: array items: type: object properties: market_id: type: string description: Polymarket market identifier (hex 0x…). ticker: type: string enum: - BTC - ETH - SOL event_type: type: string enum: - 5m - 15m - 1h - 4h - daily_up_down question: type: string polymarket_slug: type: string description: URL slug → polymarket.com/event/{slug} resolution_at: type: string format: date-time description: When the market settles on Polymarket. seconds_to_resolution: type: integer format: int64 description: Countdown — use this with τ ≤ 120 to gate for endgame. underlying_now: type: number format: double strike_price: type: number format: double description: Polymarket UP/DOWN threshold. log_diff: type: number format: double description: ln(underlying_now / strike_price) — log-distance to strike. sigma_annual: type: number format: double description: Annualised realised volatility from Binance 5s bars. sigma_tau: type: number format: double description: Volatility scaled to the time-to-resolution τ. market_yes_mid: type: number format: double description: Polymarket implied YES probability (mid of bid/ask). model_yes_prob: type: number format: double description: Our log-normal-derived YES probability. mismatch_mid: type: number format: double yes_bid: type: number format: double yes_ask: type: number format: double no_bid: type: number format: double no_ask: type: number format: double fill_price: type: number format: double description: What you'd actually pay walking the book at current spread. fill_spread: type: number format: double direction: type: string enum: - BUY_YES - BUY_NO - BUY_BOTH description: >- Which side to buy. `BUY_BOTH` only used for `tier=logical` (buy both legs for guaranteed payoff). edge_per_share: type: number format: double description: Raw probability-vs-price edge, dollar denominated. est_fee_per_share: type: number format: double expected_pnl_per_share: type: number format: double description: Edge minus est_fee_per_share — actionable EV. tier: type: string enum: - logical - endgame - stable - stale description: >- Signal classification. `logical` = math-guaranteed (yes+no<$1), `endgame` = >2σ past strike with <120s left, `stable` = persistent maker-zone mispricing, `stale` = below execution-feasibility threshold. required: - market_id - ticker - event_type - question - polymarket_slug - resolution_at - seconds_to_resolution - underlying_now - strike_price - log_diff - sigma_annual - sigma_tau - market_yes_mid - model_yes_prob - mismatch_mid - yes_bid - yes_ask - no_bid - no_ask - fill_price - fill_spread - direction - edge_per_share - est_fee_per_share - expected_pnl_per_share - tier required: - as_of - count - tickers - event_types - min_edge_pp - opportunities 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 securitySchemes: ApiKeyAuth: type: http scheme: bearer bearerFormat: API Key ````