sunpeak
A tool to build and test chat-based apps.
At a glance
Free · Source review 2026-11-02- Price & billing
Official homepage reviewed 2026-11-02: free and open source under the MIT license.
- Free allowance
Official homepage reviewed 2026-11-02: free and open source under the MIT license.
- Best suited to
Developers building MCP apps for ChatGPT and Claude
Fit is editorial guidance, not a measured result.- Platforms
Access: not separately verified. Operating systems not separately verified.
Published-source facts and editorial guidance. No product test is implied. Confirm current conditions before purchase.
No product screenshot is claimed for this listing. Use the official website ↗ to inspect the current interface.
What to know before choosing
Good fit
Developers building MCP apps for ChatGPT and Claude
Limits and trade-offs
sunpeak is a framework, not a hosted product; hosting and model costs are separate.
Plans and free allowances
Official homepage reviewed 2026-11-02: free and open source under the MIT license.
Evidence
Official homepage ↗ (reviewed 2026-11-02)
Official published page review; no authenticated product test
Dates: Last reviewed 2026-11-02. Last reviewed is the latest source or editorial review date; it is not a content-change date.
A closer look at sunpeak
sunpeak is a free, MIT-licensed MCP App framework for building ChatGPT Apps and Claude Connectors, with typed React hooks, a local inspector and CI testing.
Editorial guidance based on published documentation. The workflow below is a suggested starting point, not a measured product result.
When to choose sunpeak
- Developers building ChatGPT Apps or Claude Connectors with typed tooling
- Teams that want to test MCP apps locally and in CI
When to choose something else
- Non-developers, since sunpeak is a developer framework, not a finished app
- Users who need a hosted service rather than an open-source framework
A practical starting workflow
- Scaffold a new app with npx sunpeak new
- Build the app with typed React hooks
- Test it locally with the inspector and in CI before shipping
Check before committing
- Vendor claims on the official page are not guarantees; actual results, quality and availability must be tested in the product.
- Prices and features may change after this review; recheck the official site before purchase or signup.
Common questions
What is sunpeak?
A free, MIT-licensed MCP App framework for ChatGPT Apps and Claude Connectors.
What does sunpeak help developers test?
A local inspector replicating host runtimes and CI testing are described.
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Sources and checks
Last source review is not a date of product testing. No rating or test result is implied by inclusion. Check the current plan and terms before buying.