# RPC database This database contains info about telegram MTProto RPC errors and localized descriptions for said errors. * [Descriptions, v1 format](https://rpc.madelineproto.xyz/v1.json) * [Descriptions, v2 format](https://rpc.madelineproto.xyz/v2.json) * [Descriptions, v3 format](https://rpc.madelineproto.xyz/v3.json) * [Descriptions, v4 format](https://rpc.madelineproto.xyz/v4.json) * [Methods unavailable for bots](https://rpc.madelineproto.xyz/bot.json)