> ## Documentation Index
> Fetch the complete documentation index at: https://www.greptile.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Custom Context & Learning

> Personalize Greptile with custom rules, style guides, and context. Scope standards to specific repos and file patterns, and enable auto-learning from feedback.

You can customize Greptile's behavior by providing "custom context" for the agent to follow. Context can include custom rules, style guides or docs, and miscellanous information that Greptile may find useful.

Each rule, guide, etc. can be scoped to only apply to certain repos and certain filepaths/patterns.

## Types of Custom Context

There are three types of custom context:

### Custom Rules

You can define rules such as "use loops instead of list comprehension", and Greptile will enforce this rule across your PRs.

Examples:

```
Use consistent and meaningful naming conventions in GraphQL code
```

```
Follow idiomatic Go patterns and conventions
```

```
Handle errors consistently and explicitly
```

### Style Guides & Docs

You can point Greptile to your existing style guides and docs, and Greptile will use those as context when reviewing your PRs.

```
src/docs/styleguide.md
```

### Other Context

There is also free-form space for you to explain any idiosyncracies with your team or codebase to personalize Greptile.

Here is an example:

```
Ensure billing logic follows these rules:
- User accounts should be deactivated after 90 days of inactivity
- Orders over $1000 require manager approval
- Refunds must be processed within 48 hours
- Premium users should have priority queue access
```

***

## Scopes

Each type of context, rules, guides, and "other", can be scoped to apply to specific repos and specific file patterns.

For example, I might want to enforce use of `prop types` but only in `acme/web_app` and only in files matching the pattern `src/frontend/*.tsx`.

<Note>
  If you don't explicitly define a scope, Greptile will intelligently determine when the rule/stylegude etc. should be applied.
</Note>

## Learning

Greptile can infer rules by observing other developers in your team commenting on PRs, as well as from interaction data such as replies to Greptile comments and 👍/👎 reactions to Greptile comments.

Greptile's latest learnings can be found on the custom context page on the Greptile dashboard.