---
url: 'https://adk.nht.io/api/@nhtio/adk/common/type-aliases/MediaTrustTier.md'
description: >-
  Provenance axis. *Who is the framework willing to vouch for as the source of
  these bytes?*
---

# Type Alias: MediaTrustTier

```ts
type MediaTrustTier = readonly [
  "first-party",
  "third-party-public",
  "third-party-private",
];
```

Defined in: [lib/classes/media.ts:39](https://github.com/NHTIO/ADK/blob/v1.20260605.0/src/lib/classes/media.ts#L39)

Provenance axis. *Who is the framework willing to vouch for as the source of these bytes?*

## Remarks

Mirrors `RetrievableTrustTier` deliberately — same vocabulary, same question:
*did this content come from a place the agent should treat as authoritative?*

* `'first-party'` — deployer-vetted bytes (tool output the operator authored, signed
  internal assets).
* `'third-party-public'` — open-web fetches, public APIs, public corpora.
* `'third-party-private'` — user uploads, partner APIs, private corpora.