midbookbeta

SQL over crypto + prediction markets, built for LLM quant agents.

What it is

One API key → unified SQL access to Binance perpetuals, Polymarket L2 orderbook (live + 185 days history), funding rates, open interest, and cross-venue joins. Designed so LLM agents (ChatGPT, Claude, Gemini) can query it natively.

Core endpoints

• GET /v1/agent-brief — mandatory LLM system prompt
• GET /v1/catalog — dataset directory + row counts
• GET /v1/schema/{dataset} — columns + platform gotchas
• GET /v1/examples — 15 pre-tested strategy SQL templates
• POST /v1/sql — AST-sandboxed query with antipattern warnings
• POST /v1/backtest — structured DSL with Wilson CI + bootstrap + walk-forward + Bonferroni

Try it

curl -H "X-API-Key: YOUR_KEY" https://api.midbook.dev/v1/health
curl -H "X-API-Key: YOUR_KEY" https://api.midbook.dev/v1/catalog
curl -H "X-API-Key: YOUR_KEY" https://api.midbook.dev/v1/agent-brief

What makes us different

• Polymarket L2 orderbook history — 185 days, 92.7M snapshots. Nowhere else available in SQL.
• Cross-venue JOIN in one SELECT: Polymarket odds × Binance perp price × funding rate.
• LLM-first: agent-brief endpoint, antipattern warnings, pre-tested examples.
• Pricing starts $19/mo. Tardis-class data at fraction of the cost.

Beta access

Closed beta now. Email salimovsf@gmail.com for an API key.