Extended
It can place orders without you approving each one. Paper trading is available.
Can trade unattended
From our listingOfficial Python SDK ships an experimental MCP server (production by default). The API key is read-only, but the Stark key every order needs can also withdraw and transfer…
- Category
- Crypto exchanges
- Pricing
- no API fee
- Best for
- Crypto exchanges · crypto perpetuals, RWA perpetuals
- Verified
- 2026-10-30
Agent Risk Score (v2)
Agent risk 18% (partial, 4 of 7 inputs)
| Input | From official docs | Points |
|---|---|---|
| Who holds the keys | The Stark key every order needs can also withdraw and transfer funds source | 0 / 20 |
| Spending limits enforced outside the agent | Missing: no official source found yet | missing / 20 |
| Human approval | API orders execute with no approval step source | 0 / 15 |
| Sending funds to new addresses | Missing: no official source found yet | missing / 15 |
| Transaction preview or simulation | Missing: no official source found yet | missing / 10 |
| Open source and audits | Closed: no public source code in our listing source | 0 / 10 |
| Incident record (last 12 months) | No incident naming this tool in our incident tracker for the last 12 months, and every scored input links an official source source | 10 / 10 |
| Total | 18% of the points we could check | 10 / 55 |
Safety score
| Input | From our listing | Points |
|---|---|---|
| Can it place live orders unattended? | API orders execute with no per-order approval step source | 0 / 25 |
| Order approval or confirmation options | No per-order approval; a dead-man's switch and per-market order and position caps (official docs) source | 8 / 15 |
| Paper, demo or testnet mode | Sepolia testnet with daily test USDC (official docs) source | 15 / 15 |
| Withdrawal permission needed or allowed | The Stark key every order needs can also withdraw and transfer (official docs) source | 0 / 15 |
| Scoped keys, permission scopes or IP whitelisting | Up to 10 sub-accounts per wallet, each with its own API key and Stark key (official docs) source | 10 / 10 |
| Open source or audited | Audits cover the earlier Starknet contracts; none found yet for the Arc settlement contracts (migrated 2026-10-22) (official docs) source | 0 / 10 |
| Sourced and verified facts | Facts from the vendor's official docs | 10 / 10 |
| Total | 43% of the points we could check | 43 / 100 |
Full facts
| Category | Exchanges & brokers for bots |
|---|---|
| Assets | crypto perpetuals, RWA perpetuals |
| Live vs paper | live; Sepolia testnet with daily test USDC |
| Order approval / safety | Official Python SDK ships an experimental MCP server (production by default). The API key is read-only, but the Stark key every order needs can also withdraw and transfer; up to 10 sub-accounts per wallet |
| Pricing / free tier | no API fee; 0% maker / 0.025% taker on standard markets |
| Rate limits | 1,000 requests per minute per IP by default, up to 12,000 at high volume. |
| Official / community | official |
| Last checked | 2026-10-30 |
| Source | api.docs.extended.exchange |
| Regions (US / UK / EU) | US, UK, Canada, Hong Kong, Panama and several sanctioned places. |
Safety check: Is Extended safe to connect to an AI agent?