---
title: "tool si.read.grounding_priors"
description: "a platform, or nothing (`GroundingPriorsInput`): how often a person supported each kind of suggestion at each breadth, one row per kind, platform and breadth (`GroundingPriors`)."
section: reference
address: /reference/tools/si-read-grounding_priors
contract: 0476e35e6e275db5
---

# tool si.read.grounding_priors

a platform, or nothing (`GroundingPriorsInput`): how often a person supported each kind of suggestion at each breadth, one row per kind, platform and breadth (`GroundingPriors`).

[figure: Over MCP, si.read.grounding_priors takes GroundingPriorsInput and returns a card whose body is GroundingPriors.]

how often a person supported each kind of suggestion at each breadth, one row per kind, platform and breadth (`GroundingPriors`). The call needs the read grant at the user rung.



| | |
|---|---|
| input | [GroundingPriorsInput](/concepts/groundingpriorsinput) |
| result | a card whose body is [GroundingPriors](/concepts/groundingpriors) |
| read-only | yes |
| destructive | no |
| card address | `ui://scale-intelligence/cards/GroundingPriors` |
| HTTP route | [`/v1/read/grounding_priors`](/reference/read/grounding_priors) |





| field | type | required | note |
|---|---|---|---|
| `platform` | `text` | no |  |