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

# API Reference

> Start here for PolyNode REST APIs: V3 Polymarket data, wallet analytics, market data, orderbook snapshots, profiles, search, and legacy endpoints.

PolyNode exposes authenticated REST APIs for Polymarket market data, wallet analytics, positions, trades, builders, orderbooks, profiles, search, and supporting tools.

## Core APIs

| API                                                     | Use it for                                                                                                   |
| ------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------ |
| [V3 Data API](/data/overview)                           | Polymarket markets, positions, trades, wallet P\&L, builders, combos, rewards, tags, fees, and global stats. |
| [Wallet P\&L](/data/wallets/summary)                    | Wallet summaries, realized P\&L, P\&L events, open positions, and wallet activity.                           |
| [Markets & Search](/data/markets/search)                | Market discovery, condition lookups, market-level positions, prices, trades, and candles.                    |
| [Orderbook](/api-reference/orderbook/order-book)        | Current orderbook, midpoint, and spread snapshots.                                                           |
| [Profiles](/api-reference/polymarket-profiles/overview) | Polymarket profile lookup and username setup flows.                                                          |
| [Onchain V2](/api-reference/onchain/trades)             | Legacy onchain V2 trade, position, redemption, volume, and candle endpoints.                                 |

## Base URLs

| Surface           | Base URL                          |
| ----------------- | --------------------------------- |
| REST API          | `https://api.polynode.dev`        |
| WebSocket streams | `wss://polynode.dev/ws`           |
| Orderbook stream  | `wss://polynode.dev/orderbook/ws` |

## Authentication

Send your API key with either `x-api-key`, `Authorization: Bearer <key>`, or `?key=<key>`.

## Rate Limits

REST and streaming limits vary by plan. See [Rate Limits](/guides/rate-limits) for the current public limits, including the separate bucket for heavy trade-history endpoints.