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

# I3 — Deno-exclusive surface

> Initiative I3: implement the API surface Deno has that Bun and Node do not.

# I3 — Deno-exclusive surface

**Goal:** implement the **native API surface Deno ships that Bun and Node do not** — permissions-aware, `Deno.*`-shaped, on scripty’s own Zig VM (Linux only).

| Field          | Value                                                                     |
| -------------- | ------------------------------------------------------------------------- |
| **Initiative** | I3                                                                        |
| **Filter**     | Deno-only / Deno-first-class; **not** shared Web or Node modules          |
| **Depends on** | Usable language kernel; permission host design                            |
| **Pin**        | Deno version recorded in [Sources](/scripty/v0.0.1-dev/reference/sources) |

## Why exclusive-only

Deno’s differentiators are not “also has `fetch`.” They are the **`Deno` namespace**, **capability permissions**, **Deno KV**, and other first-party modules that Node/Bun do not ship as builtins.

I3 tracks that delta so scripty can honestly say what Deno-shaped code needs.

## Success definition

| Level              | Bar                                                                                                                                                                            |
| ------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| **Docs (pre-tag)** | [Inventory](/scripty/v0.0.1-dev/deno-exclusive/inventory) complete and every row mapped in the [matrix](/scripty/v0.0.1-dev/deno-exclusive/matrix) (matrix **Coverage** check) |
| **Implementation** | Rows `supported` with tests; permission denials fail closed                                                                                                                    |
| **Dogfood**        | Smokes for permissions + core I/O + KV                                                                                                                                         |

## Out of scope

| Item                                  | Why                                      |
| ------------------------------------- | ---------------------------------------- |
| Full Node compat Deno also implements | Shared Node matrix                       |
| Deno Deploy product cloud             | Hosted product, not local runtime kernel |
| Browser webview desktop               | Product lock — never in scripty          |
| JSR registry product                  | PM/registry track                        |

## Permissions are part of the surface

Unlike Bun’s default unrestricted model, Deno’s runtime security model **is** an API:

* CLI flags (`--allow-read`, …)
* `Deno.permissions.query` / `request` / `revoke`
* Permission descriptors

scripty should implement a **capability host** that can express the same shapes (aligned with embed `Caps` where applicable).

## Read next

<CardGroup cols={2}>
  <Card title="Inventory" icon="list" href="/scripty/v0.0.1-dev/deno-exclusive/inventory">
    Deno-only APIs catalogued for implementation.
  </Card>

  <Card title="Matrix" icon="table" href="/scripty/v0.0.1-dev/deno-exclusive/matrix">
    Living status rows.
  </Card>

  <Card title="Roadmap" icon="map" href="/scripty/v0.0.1-dev/deno-exclusive/roadmap">
    D-0 … D-6 delivery waves.
  </Card>

  <Card title="Program principles" icon="scale-balanced" href="/scripty/v0.0.1-dev/principles">
    Exclusive-surface filter rules.
  </Card>
</CardGroup>


## Related topics

- [Initiatives](/scripty/v0.0.1-dev/initiatives.md)
- [Pre-v0.0.1 program](/scripty/v0.0.1-dev/index.md)
- [Principles](/scripty/v0.0.1-dev/principles.md)
- [Deno-exclusive inventory](/scripty/v0.0.1-dev/deno-exclusive/inventory.md)
- [Deno-exclusive roadmap](/scripty/v0.0.1-dev/deno-exclusive/roadmap.md)