# Black

> The uncompromising code formatter

- **Canonical URI:** https://www.vioscale.ai/software/black
- **Category:** Code Quality Tools
- **Homepage:** https://black.readthedocs.io/en/stable/
- **Also known as:** black
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-05T14:15:26.474Z

## Vioscale score

**69.5 / 100**, confidence 46% (low).

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| capabilities | 57.8 | 0.123 | 7.1 | ✓ |
| github_stars | 87.2 | 0.038 | 3.3 | ✓ |
| integrations | 13.7 | 0.062 | 0.9 | ✓ |
| github_activity | 48.6 | 0.138 | 6.7 | ✓ |
| release_cadence | 85 | 0.077 | 6.5 | ✓ |
| security_posture | 0 | 0.1 | 0 | - |
| package_downloads | 99.1 | 0.2 | 19.8 | ✓ |
| stackoverflow_activity | 0 | 0.092 | 0 | - |

## Pricing

_As of 2026-08-05, [verify at source](https://black.readthedocs.io/en/stable/). Independently observed._

Open source · Free tier

> Free and open source (MIT license)

## About

A Python code formatter that enforces consistent, opinionated formatting across projects. Designed to speed up code review and reduce formatting debates by automatically formatting code to a standard style.

_Independently observed._

## Platform & deployment

- **Platforms:** CLI
- **Deployment:** Self-hosted

## Integrations (2)

_Independently observed._

- GitHub Actions
- Jupyter Notebooks

## Capabilities

_The capabilities that matter for Code Quality Tools. "-" = undocumented, not absent._

| Capability | Supported |
|---|:--:|
| **Core** | |
| Function | Formatter |
| Language scope | Single-language |
| Implementation language | - |
| **Capability** | |
| Autofix | ✓ |
| **Config** | |
| Config model | - |
| **Extensibility** | |
| Custom rules | - |
| **Deployment** | |
| Deployment | CLI-local |
| **Delivery** | |
| Editor integration | ✓ |
| CI / VCS gating | ✓ |
| **Insight** | |
| Code metrics | - |
| **Performance** | |
| Incremental / monorepo aware | - |
| **Licensing** | |
| Open-source | OSS |
| **Commercial** | |
| Pricing model | Free |

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | yes | [link](https://black.readthedocs.io/en/stable/) | 2026-08-05 | 60% (medium) |
| pricing.model | open_source | [link](https://black.readthedocs.io/en/stable/) | 2026-08-05 | 60% (medium) |
| pricing.price_level | free | [link](https://black.readthedocs.io/en/stable/) | 2026-08-05 | 60% (medium) |
| pricing.transparent | yes | [link](https://black.readthedocs.io/en/stable/) | 2026-08-05 | 60% (medium) |

### release

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| release.cadence_days | 27 | [link](https://github.com/psf/black/releases) | 2026-08-01 | 70% (medium) |

### activity

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| activity.commits_last_30d | 34 | [link](https://github.com/psf/black/pulse) | 2026-08-01 | 65% (medium) |

### adoption

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| adoption.github_stars | 41,774 | [link](https://github.com/psf/black) | 2026-08-01 | 90% (high) |
| adoption.package_downloads_weekly | 42,381,130 | [link](https://pypistats.org/packages/black) | 2026-08-01 | 85% (high) |

### integrations

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| integrations.count | 2 | [link](https://black.readthedocs.io/en/stable/) | 2026-08-05 | 60% (medium) |

### language

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| language.primary | Python | [link](https://github.com/psf/black) | 2026-08-01 | 98% (high) |

### license

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| license.spdx | MIT | [link](https://github.com/psf/black) | 2026-08-01 | 95% (high) |

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*Source: Vioscale (https://www.vioscale.ai/software/black). Independent, evidence-based software intelligence. Cite the canonical URI.*