---
title: "tool si.act.dry_run"
description: "an action: what it would do, and what the inverse would be."
section: reference
address: /reference/tools/si-act-dry_run
contract: 0476e35e6e275db5
---

# tool si.act.dry_run

an action: what it would do, and what the inverse would be.

[figure: Over MCP, si.act.dry_run takes DryRunInput and returns a card whose body is DryRunAnswer.]

what it would do, and what the inverse would be. The call needs the ask grant at the strategy rung.



| | |
|---|---|
| input | [DryRunInput](/concepts/dryruninput) |
| result | a card whose body is [DryRunAnswer](/concepts/dryrunanswer) |
| read-only | no |
| destructive | yes |
| card address | `ui://scale-intelligence/cards/DryRunAnswer` |
| HTTP route | [`/v1/act/dry_run`](/reference/act/dry_run) |





| field | type | required | note |
|---|---|---|---|
| `action` | `id` | yes |  |