> ## Documentation Index
> Fetch the complete documentation index at: https://docs.brik64.com/llms.txt
> Use this file to discover all available pages before exploring further.

# EVA Composition For Agents

> How agents should explain EVA composition.

Agents should explain EVA as source structure and data flow.

## Three Forms

| Form        | Meaning                              | What the explanation should make visible             |
| ----------- | ------------------------------------ | ---------------------------------------------------- |
| Sequential  | One value feeds the next.            | The intermediate value is named and consumed.        |
| Conditional | A branch selects the result.         | Every branch returns a compatible result.            |
| Parallel    | Independent branches run separately. | Branches do not depend on shared intermediate state. |

## Sequential Example

```pcd theme={null}
return MC_00.ADD8(amount, fee);
```

## Conditional Example

```pcd theme={null}
if (amount <= 0) {
    return 0;
}

return 1;
```

## Parallel Explanation

Represent independent values explicitly:

```pcd theme={null}
return MC_00.ADD8(left, right);
```

## Workflow Note

Use symbolic EVA notation only in explanatory prose. Executable examples should
use the documented PCD shape for the release being described. In Beta14.1,
direct PCD monomer calls are limited to the numeric parser profile.