# Fastify

- **Canonical URI:** https://www.vioscale.ai/software/fastify
- **Category:** Web Frameworks
- **Homepage:** https://fastify.dev
- **Also known as:** fastify
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-26T18:57:29.982Z

## Vioscale score

**63.9 / 100**, confidence 78% (high). Computed 2026-09-01.

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

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| price_level | 100 | 0.04 | 4 | ✓ |
| reliability | 0 | 0.053 | 0 | - |
| capabilities | 45.8 | 0.09911111111111111 | 4.5 | ✓ |
| repo_stars | 86.2 | 0.033 | 2.8 | ✓ |
| integrations | 36.1 | 0.053 | 1.9 | ✓ |
| dependent_projects | 70.4 | 0.08 | 5.6 | ✓ |
| dev_activity | 58.1 | 0.12 | 7 | ✓ |
| release_cadence | 98.3 | 0.067 | 6.6 | ✓ |
| security_posture | 0 | 0.087 | 0 | - |
| package_downloads | 0 | 0.173 | 0 | - |
| security_score | 83 | 0.053 | 4.4 | ✓ |
| pricing_transparency | 25 | 0.053 | 1.3 | ✓ |
| community_qa_activity | 0 | 0.08 | 0 | - |

## Pricing

_As of 2026-08-16, [verify at source](https://fastify.dev). Independently observed._

Open source · Free tier

## About

A Node.js web framework optimized to handle high request volumes with minimal overhead, featuring a plugin system, JSON Schema validation, and native TypeScript support.

_Independently observed._

## Platform & deployment
- **Deployment:** Self-hosted

## Integrations (17)

_Independently observed._

- Next.js
- Apollo Server
- Angular
- PostgreSQL
- MongoDB
- Redis
- Elasticsearch
- Swagger/OpenAPI
- WebSocket
- JWT
- Helmet
- Sentry
- RabbitMQ
- CORS
- CSRF
- OAuth2
- Kubernetes

## Capabilities

_The capabilities that matter for Web Frameworks. "-" = undocumented, not absent._

| Capability | Supported |
|---|:--:|
| **Core** | |
| Rendering model | - |
| File-based routing | - |
| **Rendering** | |
| Server components | - |
| Streaming SSR | - |
| **Fullstack** | |
| Built-in API / backend routes | ✓ |
| **DX** | |
| First-class TypeScript | ✓ |
| Fast refresh / HMR | - |
| **Core** | |
| Language | JavaScript/TypeScript |
| **Deployment** | |
| Edge runtime support | - |

## Release history

| Version | Date | Type |
|---|---|---|
| [v6.0.0-alpha.2](https://github.com/fastify/fastify/releases/tag/v6.0.0-alpha.2) | 2026-08-19 | prerelease |
| [v5.12.1](https://github.com/fastify/fastify/releases/tag/v5.12.1) | 2026-08-18 | stable |
| [v6.0.0-alpha.1](https://github.com/fastify/fastify/releases/tag/v6.0.0-alpha.1) | 2026-08-13 | prerelease |
| [v5.12.0](https://github.com/fastify/fastify/releases/tag/v5.12.0) | 2026-08-13 | stable |
| [v6.0.0-alpha.0](https://github.com/fastify/fastify/releases/tag/v6.0.0-alpha.0) | 2026-08-11 | prerelease |
| [v5.11.3](https://github.com/fastify/fastify/releases/tag/v5.11.3) | 2026-08-08 | stable |
| [v5.11.2](https://github.com/fastify/fastify/releases/tag/v5.11.2) | 2026-08-03 | stable |
| [v5.11.1](https://github.com/fastify/fastify/releases/tag/v5.11.1) | 2026-08-03 | stable |
| [v5.11.0](https://github.com/fastify/fastify/releases/tag/v5.11.0) | 2026-07-30 | stable |
| [v5.10.0](https://github.com/fastify/fastify/releases/tag/v5.10.0) | 2026-07-05 | stable |
| [v5.9.0](https://github.com/fastify/fastify/releases/tag/v5.9.0) | 2026-06-28 | stable |
| [v5.8.5](https://github.com/fastify/fastify/releases/tag/v5.8.5) | 2026-04-14 | stable |
| [v5.8.4](https://github.com/fastify/fastify/releases/tag/v5.8.4) | 2026-03-23 | stable |
| [v5.8.3](https://github.com/fastify/fastify/releases/tag/v5.8.3) | 2026-03-23 | stable |
| [v5.8.2](https://github.com/fastify/fastify/releases/tag/v5.8.2) | 2026-03-07 | stable |

_… and 5 earlier release(s)._

## Security & compliance


Known vulnerabilities: 10 (5 in the last 12 months), max severity HIGH ([source](https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=fastify&per_page=100)). A count reflects scale and disclosure, not quality.

## Facts

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

### integrations

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| integrations.count | 17 | [link](https://fastify.dev) | 2026-08-16 | 60% (medium) |

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | yes | [link](https://fastify.dev) | 2026-08-16 | 60% (medium) |
| pricing.price_level | free | [link](https://fastify.dev) | 2026-08-16 | 60% (medium) |
| pricing.model | commercial | [link](https://fastify.dev) | 2026-08-26 | 40% (low) |

### activity

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| activity.commits_last_30d | 69 | [link](https://github.com/fastify/fastify/pulse) | 2026-08-26 | 65% (medium) |

### adoption

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| adoption.github_stars | 37,024 | [link](https://github.com/fastify/fastify) | 2026-08-26 | 90% (high) |
| adoption.dependent_repos | 16,712 | [link](https://packages.ecosyste.ms/api/v1/packages/lookup?repository_url=https%3A%2F%2Fgithub.com%2Ffastify%2Ffastify) | 2026-08-26 | 85% (high) |

### language

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| language.primary | JavaScript | [link](https://github.com/fastify/fastify) | 2026-08-26 | 90% (high) |

### license

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| license.spdx | MIT | [link](https://github.com/fastify/fastify) | 2026-08-26 | 95% (high) |

### release

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| release.cadence_days | 3 | [link](https://github.com/fastify/fastify/releases) | 2026-08-26 | 70% (medium) |

### security

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| security.scorecard | 8.3 | [link](https://api.securityscorecards.dev/projects/github.com/fastify/fastify) | 2026-08-26 | 90% (high) |
| security.vulnerabilities | `{"count":10,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=fastify&per_page=100","last_12m":5,"max_severity":"HIGH"}` | [link](https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=fastify&per_page=100) | 2026-08-26 | 90% (high) |

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