> ## Documentation Index > Fetch the complete documentation index at: https://openrouter.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # Key ## Fields | Field | Type | Required | Description | | ----- | --------------------------------------- | -------------------- | ----------- | | `alg` | [components.Alg](../components/alg.mdx) | :heavy\_check\_mark: | N/A | | `crv` | [components.Crv](../components/crv.mdx) | :heavy\_check\_mark: | N/A | | `kid` | *str* | :heavy\_check\_mark: | N/A | | `kty` | [components.Kty](../components/kty.mdx) | :heavy\_check\_mark: | N/A | | `use` | [components.Use](../components/use.mdx) | :heavy\_check\_mark: | N/A | | `x` | *str* | :heavy\_check\_mark: | N/A | | `y` | *str* | :heavy\_check\_mark: | N/A |