---
title: "tool si.read.trajectory"
description: "a strategy or one move, and a window (`TrajectoryInput`): plan item to grounded move to outcome: each move with the items that carried it out, their readings and its effect."
section: reference
address: /reference/tools/si-read-trajectory
contract: 0476e35e6e275db5
---

# tool si.read.trajectory

a strategy or one move, and a window (`TrajectoryInput`): plan item to grounded move to outcome: each move with the items that carried it out, their readings and its effect.

[figure: Over MCP, si.read.trajectory takes TrajectoryInput and returns a card whose body is Trajectory.]

plan item to grounded move to outcome: each move with the items that carried it out, their readings and its effect. The call needs the read grant at the strategy rung.



| | |
|---|---|
| input | [TrajectoryInput](/concepts/trajectoryinput) |
| result | a card whose body is [Trajectory](/concepts/trajectory) |
| read-only | yes |
| destructive | no |
| card address | `ui://scale-intelligence/cards/Trajectory` |
| HTTP route | [`/v1/read/trajectory`](/reference/read/trajectory) |





| field | type | required | note |
|---|---|---|---|
| `strategy` | `id` | no |  |
| `move` | `id` | no |  |
| `window` | [Window](/concepts/window) | no |  |