# UPLOAD

> **Implementation: supported · Proposal: [in-review](https://github.com/napplet/naps/pull/33)** (status checked 2026-10-31). Upload binding has focused tests for request/result behavior; host rail support remains runtime-specific. All capabilities remain subject to change. [Maturity and opt-in policy](https://napplet.run/docs/naps/maturity.md).

Shell-mediated file/blob upload over NIP-96 + Blossom rails; the shell signs auth and returns NIP-94 metadata.

```ts
if (window.napplet?.upload) {
  const info = await window.napplet.upload.info();
  const result = await window.napplet.upload.upload({ data: blob, filename: 'pic.png' });
  if (result.status === 'complete') attach(result.url, result.nip94);
}
```

This non-normative guide defers to the living [NAP-UPLOAD proposal](https://github.com/napplet/naps/pull/33). Feature-gate with `if (window.napplet?.upload)` before use; the runtime injects only available domains. Typed helpers ship from [`@napplet/nap/upload`](https://napplet.run/docs/packages/nap.md) and [`@napplet/sdk`](https://napplet.run/docs/packages/sdk.md).