Altair GraphQL Client
The #1 open source feature rich GraphQL client to supercharge your workflow!
FreeIDEOpen SourceAI7,696 impressions#6 of its week
Altair GraphQL Client is an open-source tool for debugging, testing and exploring GraphQL APIs with optional AI assistance.
- for
- Developers building or consuming GraphQL APIs
- pricing
- open source
- license
- MIT
Key features
- Environment switching — Easily toggle between local, staging and production GraphQL endpoints.
- Schema doc search — Rich interface to search through your GraphQL schema.
- File upload support — Upload binary files as variables via the GraphQL multipart request spec.
- Automatic schema refresh — Refresh the schema automatically when it changes using the GraphQL Event Stream.
- Pre-request scripts — Run scripts to set dynamic variables before each request.
- Query collection import/export — Create, share and version collections of queries with your team.
- Generate queries from schema — Add queries or fragments directly from docs without manual typing.
- Plugin system — Extend core functionality with community-built plugins.
Use cases
- Debugging a GraphQL API during development
- Testing mutations and queries across multiple environments
- Generating query snippets from schema documentation
- Uploading files (e.g., images) via GraphQL mutations
- Sharing a collection of queries with teammates
Altair GraphQL Client vs alternatives
 Altair GraphQL Client |  Firecamp |  GraphQL editor |  Fluent CI |  Automock | |
|---|---|---|---|---|---|
| Best for | Feature-rich GraphQL client with AI helper | Unified API testing tool | Schema design and visualization | CI/CD pipeline authoring | Simplified unit testing |
| Pricing | Open source | Free | Subscription | Free | Free |
| DevHunt upvotes | 5 | 48 | 49 | 158 | 148 |
| Launched | Dec 2024 | Jan 2023 | Jan 2023 | Jan 2024 | Jan 2023 |
- Altair GraphQL Client vs Firecamp: Firecamp is a broader API client supporting REST, GraphQL and WebSocket, while Altair focuses solely on GraphQL features.
- Altair GraphQL Client vs GraphQL editor: GraphQL editor is a visual schema design tool, whereas Altair is a client for executing and testing queries.
- Altair GraphQL Client vs Fluent CI: Fluent CI writes CI/CD pipelines in TypeScript; not directly comparable to a GraphQL client.
- Altair GraphQL Client vs Automock: Automock provides mock generation for TypeScript tests, unrelated to GraphQL query execution.
Altair GraphQL Client FAQ
Do I need to install Altair locally?+
Altair can be installed via Homebrew, Snap, Chocolatey, or used directly in browsers (Chrome, Firefox, Edge) and as a web app.
What is the AI assistant?+
An optional feature that answers questions about your GraphQL API and helps generate queries.
Can I run scripts before a request?+
Yes, Altair supports pre-request scripts to set dynamic variables.
How does schema refreshing work?+
Altair can automatically refresh the schema using the GraphQL Event Stream specification whenever the server schema changes.
Is Altair extensible?+
Yes, it has an extensive plugin system that lets you add custom functionality.
Summarized by DevHunt from altairgraphql.dev · Sep 28, 2026. Details may change; check the official site.
