---
title: "tool si.session.cache"
description: "nothing, or a call to forget: what the app holds from earlier answers, by call and date, and when each expires."
section: reference
address: /reference/tools/si-session-cache
contract: 0476e35e6e275db5
---

# tool si.session.cache

nothing, or a call to forget: what the app holds from earlier answers, by call and date, and when each expires.

[figure: Over MCP, si.session.cache takes CacheInput and returns a card whose body is CacheView.]

what the app holds from earlier answers, by call and date, and when each expires. The call needs the read grant at the user rung.



| | |
|---|---|
| input | [CacheInput](/concepts/cacheinput) |
| result | a card whose body is [CacheView](/concepts/cacheview) |
| read-only | yes |
| destructive | no |
| card address | `ui://scale-intelligence/cards/CacheView` |
| HTTP route | [`/v1/session/cache`](/reference/session/cache) |





| field | type | required | note |
|---|---|---|---|
| `forget` | `text` | no | the call name and its input hash |