convexlake

Batch and real-time trade, orderbook, candle, and volatility-surface data for prediction markets (Kalshi, Polymarket, Predict.fun, Limitless) and crypto…

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What it can do

  • Get Profile: Return the signed-in Convex Lake user's profile, including subscription tier (free or pro).
  • Get Subscription: Return the signed-in user's most recent Convex Lake subscription (status, renewal, cancellation state).
  • List Market Data: Browse the Convex Lake data catalog by drilling down one level at a time. With no parameters it lists market data types (orderbook, trades, candles, surface, bbo). Add md_type to lis

What data it sees

Do you need an account

No: the server works without sign-in

Batch and real-time trade, orderbook, candle, and volatility-surface data for prediction markets (Kalshi, Polymarket, Predict.fun, Limitless) and crypto derivatives (Deribit, Binance options).

How to connect

How to connect convexlake to Claude

The server address to paste into Claude settings:

https://convexlake--hsergey-frolov.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect convexlake to ChatGPT

The server address to paste into ChatGPT settings:

https://convexlake--hsergey-frolov.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect convexlake to Cursor

The server address to paste into Cursor settings:

https://convexlake--hsergey-frolov.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (8)

Raw names from tools/list. Only developers need these.

get_profileReturn the signed-in Convex Lake user's profile, including subscription tier (free or pro).
get_subscriptionReturn the signed-in user's most recent Convex Lake subscription (status, renewal, cancellation state).
list_market_dataBrowse the Convex Lake data catalog by drilling down one level at a time. With no parameters it lists market data types (orderbook, trades, candles, surface, bbo). Add md_type to list exchanges, then exchange to list tickers, then ticker to list timeframes, then timeframe to list dates, then date to list the actual files (their `slug` values are what the download tools need). Access is limited by the signed-in user's subscription tier.
get_orderbook_fileReturn a time-limited download URL for a single orderbook file. Use list_market_data first to get the exact `slug` filename. Set md_type to `bbo` for best-bid/offer files.
get_candles_fileReturn a time-limited download URL for a single OHLCV candles file. Use list_market_data (md_type=candles) first to get the exact `slug` filename.
get_trades_fileReturn a time-limited download URL for a single executed-trades file. Use list_market_data (md_type=trades) first to get the exact `slug` filename.
get_surface_fileReturn a time-limited download URL for a single volatility surface file. Use list_market_data (md_type=surface) first to get the exact `slug` filename.
get_download_urlReturn a time-limited presigned download URL for a full object key (e.g. `orderbook/kalshi/btc/15m/2026-05-21/FILE.gz`). Use this when you already know the exact key; otherwise prefer list_market_data plus the per-endpoint file tools.