> ## Documentation Index > Fetch the complete documentation index at: https://docs.simular.ai/llms.txt > Use this file to discover all available pages before exploring further. # StateSatisfiesModel > A dedicated state-satisfaction model that evaluates whether observed screen state satisfies a natural-language condition. This speaks Simular's `v1/perception/state_satisfies` endpoint. It is separate from `AskModel`, which remains an OpenAI-compatible chat-completions client. ## Constructor ```typescript StateSatisfiesModel(): StateSatisfiesModel ``` ### Returns `StateSatisfiesModel` ## Properties The provider-configured model identifier. ## Methods ### availableAliases() ```typescript availableAliases(): string[] ``` Every state-satisfaction model alias accepted by `byAlias` on this machine, deduplicated and sorted alphabetically. #### Returns `string[]` ### byAlias() ```typescript byAlias(alias: string): StateSatisfiesModel ``` Resolve a model alias against the loaded config. Throws if the alias is unknown. #### Parameters #### Returns `StateSatisfiesModel` ### checkAuth() ```typescript checkAuth(): void ``` Check that the provider credentials work. Throws if they do not. ### default() ```typescript default(): StateSatisfiesModel ``` First state-satisfaction model advertised by the first capable provider in the loaded configuration whose credentials are currently available. Throws if no provider advertises the state-satisfies service. #### Returns `StateSatisfiesModel` ### simularStateSatisfies() ```typescript simularStateSatisfies(): StateSatisfiesModel ``` Convenience shim for the bundled `simular_state_satisfies` alias. #### Returns `StateSatisfiesModel` ### stateSatisfies() ```typescript stateSatisfies(condition: string, text: string, image: string): boolean ``` Evaluate `condition` against the supplied accessibility text and raw screenshot base64. #### Parameters #### Returns `boolean`