What the API is
A read-only REST API over the same market-data series the Zealous Markets web app renders: OHLC and order book on every supported exchange, daily and hourly aggregates, plus eight categories of on-chain ERC-20 activity (transfers, mints, burns, swaps, MEV, simple transfers, flash loans, and flash-loan arbitrage).
Who can use it
API access is a paid feature.
| Plan | Requests / month | Bytes / month | Per-second burst | Hourly data |
|---|---|---|---|---|
| Free | — | — | — | — |
| Pro | 1 000 000 | 50 GiB | ~16 req/s | yes |
| Enterprise | per-account | per-account | per-account | yes |
Free accounts can browse the API Explorer; the Run button is disabled until you upgrade. Enterprise limits are negotiated per contract.
Where to start
- Quickstart — sign in, mint a key, make your first request.
- Authentication — how keys work, rotation, the two-key cap.
- Formats (JSON & TOON) — JSON for everyone, TOON for AI agents.
- Quotas & rate limits — hard caps, headers, how to reduce usage.
- Errors — the uniform error envelope and how to retry.
- API Explorer — interactive endpoint reference with a live Run button.
Not in v1
REST only — no WebSocket streaming, no mutation endpoints, no generated SDKs, daily/hourly aggregates only.