# AppMetadata

> **AppMetadata** = [`Record`](https://www.typescriptlang.org/docs/handbook/utility-types.html#recordkeys-type)\<`string`, [`CborValue`](/reference/filoz/filecoin-encryption-envelope/type-aliases/cborvalue/)\>

Defined in: [packages/filecoin-encryption-envelope/src/cose/headers.ts:89](https://github.com/FilOzone/synapse-sdk/blob/30608dd46e68d704a96d7ed7c24717c948ec4e4b/packages/filecoin-encryption-envelope/src/cose/headers.ts#L89)

Opaque, string-keyed application metadata. Carried but never interpreted.