> **Building with AI coding agents?** Install the authstack plugin with one command. This equips your agent with accurate Scalekit implementation patterns.
>
> **Recommended**:
> ```bash
> npx @scalekit-inc/cli setup
> ```
>
> Global:
> ```bash
> npm install -g @scalekit-inc/cli
> scalekit setup
> ```
>
> Supports Claude Code, Cursor, GitHub Copilot, Codex + skills for 40+ agents.
> Features: full-stack-auth, agent-auth, mcp-auth, modular-sso, modular-scim.
> [Full setup guide](https://docs.scalekit.com/dev-kit/build-with-ai/)

---

# Outbound IP addresses

Allowlist Scalekit's outbound IP addresses so providers and services accept the requests and tool calls that originate from Scalekit.
When Scalekit makes outbound requests on your behalf, such as tool calls to upstream providers, the traffic originates from a fixed set of NAT IP addresses. If a provider or one of your own services restricts inbound traffic by IP, add these addresses to its allowlist so the provider accepts the requests.

## IP addresses by region

| Region | Outbound IP address |
|---|---|
| United States (US) | `34.94.129.140` |
| European Union (EU) | `35.198.115.68` |

Use the address for the region your Scalekit environment runs in. If you run environments in both regions, allowlist both addresses.

> note: Confirm before you rely on these long-term
>
> Outbound IP addresses can change. Check this page for the current values before you finalize a firewall rule, and contact Scalekit support if you need advance notice of changes for a compliance review.

## When to allowlist these addresses

Allowlist Scalekit's outbound IP addresses when:

- An upstream provider restricts API access to known IP addresses, and you call that provider's tools through Scalekit.
- Your own backend validates the source IP of the requests it receives from Scalekit.


---

## More Scalekit documentation

| Resource | What it contains | When to use it |
|----------|-----------------|----------------|
| [/llms.txt](/llms.txt) | Structured index with routing hints per product area | Start here — find which documentation set covers your topic before loading full content |
| [/llms-full.txt](/llms-full.txt) | Complete documentation for all Scalekit products in one file | Use when you need exhaustive context across multiple products or when the topic spans several areas |
| [sitemap-0.xml](https://docs.scalekit.com/sitemap-0.xml) | Full URL list of every documentation page | Use to discover specific page URLs you can fetch for targeted, page-level answers |