---
slug: "Boolean"
name: "Boolean"
type: "Data Structures"
layer: "Infrastructure"
ref: "Boolean#981e"
sema_id: "sema:Boolean#mh:SHA-256:981efb73fe1629d491f83db8c4b9bbc05284d7ddb76e71222d83be8d2176d9be"
tags: ["Infrastructure","Data Structures"]
updated: 2026-11-11
mindscape: "bootstrap"
index_url: https://mindscape.pages.dev/bootstrap/index.json
url: https://mindscape.pages.dev/bootstrap/Boolean/
related: ["Validate"]
---

# Boolean

Binary truth value — true or false

Layer: Infrastructure · Category: Data Structures

## Mechanism

The primitive true/false type. A Boolean value is one of exactly two mutually exclusive members: true or false. Used as the output type of schema-validation and as the evaluation return of conditional traits. Distinct from the three-state Decision (proceed/halt/debt) and from the graded Status (verified/falsified/unknown): Boolean admits no middle value.

## Invariants

- Exhaustive: every Boolean value is one of exactly two members.
- Exclusive: no value is simultaneously true and false.

## Failure modes

—

## Data schema

```json
{
  "type": "object",
  "required": [
    "value"
  ],
  "properties": {
    "value": {
      "type": "boolean",
      "description": "The truth value: true or false"
    }
  }
}
```

## Builds on

—

## Used by

- [Validate](https://mindscape.pages.dev/bootstrap/Validate.md) (Infrastructure; Yields)

## Identity

- Sema ID: `sema:Boolean#mh:SHA-256:981efb73fe1629d491f83db8c4b9bbc05284d7ddb76e71222d83be8d2176d9be`
- Ref: `Boolean#981e`

## Links

- [Pattern page](https://mindscape.pages.dev/bootstrap/Boolean/)
- [View in the interactive graph](https://mindscape.pages.dev/bootstrap/#Boolean)
- [JSON](https://mindscape.pages.dev/bootstrap/Boolean.json)
- [Index of all patterns](https://mindscape.pages.dev/bootstrap/index.json)