Who should use Schema-First?

Schema-First is an open-source project built for API developers and backend engineers.

Does Schema-First have a free plan?

Yes — Schema-First is open source under the LGPL-2.1 license and free to use.

What platforms does Schema-First run on?

Schema-First runs on the command line. It can also be self-hosted.

Is Schema-First still maintained?

The GitHub repository shows 10 commits in the last 90 days.

What projects are similar to Schema-First?

Similar projects tracked by PulseGate include Understat xG Data Export, HEIC Converter, and Giltiq.

Who makes Schema-First?

Schema-First is developed by flask-pro.

When did Schema-First launch?

Schema-First first shipped in 2025.

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Schema-First

Name: Schema-First
Author: flask-pro

PyPIInfrastructure

Schema-First is an open-source CLI tool that validates OpenAPI specifications and converts them into Marshmallow schemas. It streamlines API development for backend engineers by ensuring schema consistency and simplifying integration.

Open SourceLGPL-2.1CLISelf-hosted

Visit PyPI

1star

5features

2025since

Overview

5 features

In the API design, testing & docs space, Schema-First takes a focused approach. It focuses on validating and converting OpenAPI specifications to Marshmallow schemas for streamlined API development. It is built as an open-source project for API developers and backend engineers. Schema-First is open source under the LGPL-2.1 license. It ships for the command line, and it can be self-hosted.

It is developed by flask-pro, and it first shipped in 2025. Development happens publicly on GitHub with 10 commits in the last 90 days. Key capabilities include openAPI validation, schema conversion, and marshmallow integration.

Summary written by a language model from the project’s public pages.

OpenAPI validation
Schema conversion
Marshmallow integration
CLI interface
Specification parsing

Built with & integrations

Runs on

CLISelf-hosted

Trust & compliance

License

LGPL-2.1

Verified signals

HTTPSOpen SourceFree tierGitHub · ★ 1Active maintenance

Indexing history

What PulseGate has recorded for this listing

Indexed12 Jul · 14:41 UTC
Schema-First verified against its public source
Source: PulseGate · Open

Frequently asked questions about Schema-First

What does Schema-First do?: Schema-First focuses on validating and converting OpenAPI specifications to Marshmallow schemas for streamlined API development. It is catalogued under API design, testing & docs on PulseGate.
Who should use Schema-First?: Schema-First is an open-source project built for API developers and backend engineers.
Does Schema-First have a free plan?: Yes — Schema-First is open source under the LGPL-2.1 license and free to use.
What platforms does Schema-First run on?: Schema-First runs on the command line. It can also be self-hosted.
Is Schema-First still maintained?: The GitHub repository shows 10 commits in the last 90 days.
What projects are similar to Schema-First?: Similar projects tracked by PulseGate include Understat xG Data Export, HEIC Converter, and Giltiq.Understat xG Data Export HEIC Converter Giltiq
Who makes Schema-First?: Schema-First is developed by flask-pro.
When did Schema-First launch?: Schema-First first shipped in 2025.

At a glance

Platforms: Cli
Languages: English
Open source: Yes · ★ 1
License: LGPL-2.1
Built for: API developers and backend engineers
Model: Open source
Solves: Validating and converting OpenAPI specifications to Marshmallow schemas for streamlined API development.

Registered as

GitHub: flask-pro/schema-first
PyPI: Schema-First

Developer

flask-pro

Small team

GitHub

Open source

View on GitHub

Stars: 1
Forks: 0
Open issues: 0
Last commit: 12 Jul 2026
Commits 90d: 10
Contributors: 2
Authorship: Small team
Default branch: main
Latest release: v0.14.2 · 12 Jul 2026

Live coverage

Identity confidence: Low · 64
Indexed: 12 Jul 2026
Lifecycle: Unverified
Last seen: 12 Jul 2026

Identity audit (12)

Slug: schema-first-pypi-org
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 12 Jul 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Written by a language model from the project's public pages.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model from page content.
Last updated: 14 Jul 2026
Canonical URL: https://pypi.org/project/Schema-First

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