> ## Documentation Index
> Fetch the complete documentation index at: https://hedera-0c6e0218-mintlify-bc559771.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# KeyList

> KeyList is a Hedera protobuf message holding a list of keys that must all sign (M-of-M) to authorize a transaction unless documented otherwise.

A list of keys that requires all keys (M-of-M) to sign unless otherwise specified in the documentation. A KeyList may contain repeated keys, but all repeated keys are only required to sign once.

| Field  | Type                                         | Description  |
| ------ | -------------------------------------------- | ------------ |
| `keys` | ​[Key](/reference/protobuf/basic-types/key)​ | list of keys |

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