# DepthFeed (depthfeed.com)

Captures full depth order books from Polymarket, Kalshi and Limitless and serves them over REST and websocket for backtesting.

- Atlas card: https://inite.ai/en/atlas/depthfeed.com
- Site: https://depthfeed.com
- For: Quant researchers, systematic traders, market makers and data scientists testing prediction market strategies on order book data
- Categories: commerce
- Use not measured/100 · alive 87/100

## Used for

- backtest trading ideas against recorded order book depth
- replay historical order books to estimate slippage
- paper trade strategies on markets that have not resolved yet

## Price

- from 29 USD/month, free plan (read 2026-10-19 on https://depthfeed.com/pricing)

## For developers

- MCP server: com.depthfeed/depthfeed (namespace; open on 2026-10-19, 15 tools)
- Read 2026-10-19

## MCP server, measured daily

Server: https://api.depthfeed.com/mcp, checked every day since 2026-10-19 (2 checks).

- Answered: measuring, 2 daily checks so far
- Median first answer: 458 ms
- Sign-in: none
- Context its tool definitions take: about 3287 tokens (15 tools)
- Tool definitions: A, 100/100
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-19

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Source: INITE Atlas, https://inite.ai/en/atlas/depthfeed.com. JSON: https://inite.ai/api/atlas/depthfeed.com. MCP: https://inite.ai/api/mcp (atlas_lookup).