Overlay Charts API

openapi: 3.1.0
info:
  title: Overlay Market Data Aggregator Charts API
  version: v1
  description: Public, unauthenticated market-data API for the Overlay Protocol — a decentralized perpetual-futures protocol on BNB Smart Chain (chain id 56). Covers the CoinGecko/CMC-style aggregator feed, the market catalog, and the charts price-overview feed. All endpoints are read-only and public. Trading itself is executed on-chain against Overlay smart contracts (Shiva, OverlayV1State); this API surfaces the off-chain data/indexing layer.
  contact:
    name: Overlay Protocol
    url: https://docs.overlay.market/
  x-provenance:
    generated: '2026-07-20'
    method: searched
    source: https://docs.overlay.market/api/aggregator-market-data + live probes of https://api.overlay.market (2026-07-20, HTTP 200)
servers:
- url: https://api.overlay.market
  description: Production
tags:
- name: Charts
  description: Price overview and OHLC chart data.
paths:
  /bsc-charts/v1/charts/marketsPricesOverview:
    get:
      operationId: getMarketsPricesOverview
      tags:
      - Charts
      summary: Price overview across markets
      description: Returns a per-market price overview — latest price, price seven days ago, and a series of recent prices for sparkline rendering.
      responses:
        '200':
          description: Array of per-market price overviews.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/MarketPriceOverview'
components:
  schemas:
    MarketPriceOverview:
      type: object
      properties:
        marketAddress:
          type: string
          description: On-chain market contract address (BSC).
        latestPrice:
          type: number
        priceSevenDaysAgo:
          type: number
        prices:
          type: array
          items:
            type: number
          description: Recent price series for sparkline rendering.