> For the complete documentation index, see [llms.txt](https://docs.spreddterminal.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.spreddterminal.com/readme.md).

# Spredd Markets API

The unified prediction market trading API. One key, every platform.

## Platforms

| Platform     | Chain          | Collateral       |
| ------------ | -------------- | ---------------- |
| Kalshi       | Solana (DFlow) | USDC             |
| Polymarket   | Polygon        | USDC             |
| Myriad       | Abstract       | USDC.e           |
| Opinion Labs | BSC            | USDT (data only) |
| Limitless    | Base           | USDC             |

## Tiers

<table><thead><tr><th width="125">Tier</th><th>Price</th><th>RPM</th><th width="87">TPM</th><th width="103">Monthly Quota</th><th>Access</th></tr></thead><tbody><tr><td>Free</td><td>$0</td><td>60</td><td>5</td><td>10K</td><td>Markets, search, order books</td></tr><tr><td>Builder</td><td>$79/mo</td><td>300</td><td>30</td><td>100K</td><td>+ Trading, positions, arbitrage</td></tr><tr><td>Pro</td><td>$199/mo</td><td>1,000</td><td>100</td><td>1M</td><td>+ Feed, WebSocket</td></tr><tr><td>Feed</td><td>$499/mo</td><td>3,000</td><td>—</td><td>10M</td><td>+ Create your own markets</td></tr></tbody></table>

Free tier: 1% trade fee. Paid tiers: zero trade fees.

## Quick Start

```bash
# Sign up
curl -X POST https://api.spreddterminal.com/v1/auth/signup \
  -H "Content-Type: application/json" \
  -d '{"email": "you@company.com"}'

# Get API key
curl -X POST https://api.spreddterminal.com/v1/auth/api-keys \
  -H "Content-Type: application/json" \
  -d '{"account_id": "YOUR_ID", "tier": "free"}'

# Browse markets
curl "https://api.spreddterminal.com/v1/markets?platform=polymarket&limit=5" \
  -H "X-API-Key: sprdd_pk_..."
```

## Docs

* [Quick Start](/readme/quickstart.md)
* [API Reference](/readme/api-reference.md)
* [Trading Guide](/readme/trading-guide.md)
* [WebSocket Feed](/readme/websocket-feed.md)
* [Rate Limits & Tiers](/readme/rate-limits.md)
* [Authentication](/readme/authentication.md)
* [Error Handling](/readme/errors.md)
* [Code Examples](/readme/code-examples.md)

## Stack

FastAPI + PostgreSQL + Redis + SQLAlchemy (async) + Alembic, deployed on Railway.

## License

Proprietary. All rights reserved.


---

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