API Spector is a free, open-source, local-first API testing tool. Send requests, mock APIs, run contract tests, and monitor your APIs — plus a hosted, Pact-compatible contract broker and deploy gate that stop breaking changes. Your data stays in the EU.
Publisher’s description
What is API Spector?
API Spector is an open-source ides & code editor program for Windows from Testsmith.
Installation and requirements
Official installers exist for 64-bit as EXE (NSIS). It can be installed for the current user only, without administrator rights. The installer supports unattended (silent) installation.
Updates and version history
The current version is 0.9.10, released on November 5, 2026. 8 versions are listed since November 3, 2026, each with links to its own installer files. The last update is less than a month old.
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
- Installs without administrator rights
- Updated in the last two months
Cons
- No native ARM64 build
In short: API Spector is an open-source ides & code editor tool for 64-bit PCs. Administrators can deploy it unattended.
Is API Spector safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
5F68AA7AE810E7D0744BC71139DA4746FA0359B55E855747F767FDF5109888D2· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 8 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 0.9.10Latest | November 5, 2026 | — | 64-bit EXE (NSIS) |
| 0.9.9 | November 4, 2026 | — | 64-bit EXE (NSIS) |
| 0.9.8 | November 4, 2026 | — | 64-bit EXE (NSIS) |
| 0.9.7 | November 4, 2026 | — | 64-bit EXE (NSIS) |
| 0.9.6 | November 3, 2026 | — | 64-bit EXE (NSIS) |
| 0.9.5 | November 3, 2026 | — | 64-bit EXE (NSIS) |
| 0.9.4 | November 3, 2026 | — | 64-bit EXE (NSIS) |
| 0.9.3 | November 3, 2026 | — | 64-bit EXE (NSIS) |
Install from the command line
Silent install ›winget install --id Testsmith.APISpector -eAPI-Spector-Setup-0.9.10.exe /SRelated guide: How to use winget: install and update apps
Information
- Publisher
- Testsmith
- Category
- IDEs & code editors
- Licence
- MIT
- Price
- Free
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE (NSIS)
- Version
- 0.9.10
- Released
- November 5, 2026
- Added to the catalogue
- November 3, 2026
- Versions listed
- 8
- Website
- github.com
- winget ID
- Testsmith.APISpector
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is API Spector free?
Yes. API Spector is open-source software under the MIT licence.
Is API Spector safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install API Spector with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can API Spector be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does API Spector run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of API Spector?
The versions page lists all 8 versions with links to their official installer files, back to November 3, 2026.
Can I use API Spector without administrator rights?
Yes, there is a per-user installer that does not need administrator rights.
What are alternatives to API Spector?
OpenCode, Node.js (LTS), RStudio, Apache NetBeans and VSCodium. The alternatives page compares them.
