# Page Not Found

The URL `mod-8-backend/3-securing-api-keys-and-environment-variables` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [2. Data Types & Variables](https://marcylabschool.gitbook.io/marcy-lab-school-docs/mod-1-javascript-fundamentals/1-data-types-variables.md)
- [6. API Keys, Proxy Server Strategy, and Environment Variables](https://marcylabschool.gitbook.io/marcy-lab-school-docs/mod-5-servers/6-environment-variables-deployment.md)
- [3. Creating Tables](https://marcylabschool.gitbook.io/marcy-lab-school-docs/mod-6-databases/3-creating-tables.md)
- [5. Schema Design & Normalization](https://marcylabschool.gitbook.io/marcy-lab-school-docs/mod-6-databases/5-schema-design-and-normalization.md)
- [3. Server Basics with node:http](https://marcylabschool.gitbook.io/marcy-lab-school-docs/mod-5-servers/3-server-basics-http-server.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://marcylabschool.gitbook.io/marcy-lab-school-docs/mod-1-javascript-fundamentals/1-data-types-variables.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

### Option 2 — Browse the documentation index

Full index: https://marcylabschool.gitbook.io/marcy-lab-school-docs/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://marcylabschool.gitbook.io/marcy-lab-school-docs/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/marcy-lab-school-docs/mod-1-javascript-fundamentals/1-data-types-variables.md`).

You may also use `Accept: text/markdown` header for content negotiation.