# 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/e853a1d93da8c983371ffce4424cdb8996cc06ff/packages/filecoin-encryption-envelope/src/cose/headers.ts#L89)

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