Heapi.
ActiveHigh-performance HTTP client for developers. Test, inspect and automate HTTP requests with elegance.
Heapi is a native, high-performance HTTP API client built with Go and Wails. No Electron bloat. No account required. It runs natively, starts in milliseconds, and uses under 50 MB of RAM — giving you a fast, distraction-free environment to test and automate HTTP requests.
# Collection: users-api.yaml
- name: Get User
method: GET
url: "{{base_url}}/users/{{user_id}}"
headers:
Authorization: Bearer {{api_key}}
Accept: application/json
# Response — 200 OK in 43ms
{
"id": "usr_9a8b7c",
"email": "dev@heapi.local",
"status": "active"
}Features
Native Performance
Pure Go HTTP engine with real concurrency. Starts in milliseconds, uses < 50 MB idle.
Integrated Terminal
Full PTY shell inside the app. Auto-detects PowerShell, CMD, Bash, WSL. No Alt+Tab needed.
YAML Collections
Collections stored as human-readable YAML files — perfect for Git diffs and Pull Request reviews.
Variable Interpolation
{{var}} and <<var>> syntax with recursive resolution. Switch environments in one click.
Import from cURL / Postman
Migrate instantly from curl commands or Postman v2.1 collections.
Zero Telemetry
Fully local-first. No cloud, no account, no tracking. Your data stays on your machine.
Tech Stack
Interested? Check the code or get in touch.