Reticle
Lets coding agents check their changes inside the running app.
- AI tool
Pricing
Free open-source SDK; hosted platform at app.reticle.sh (pricing not stated). License: mixed. The SDK, core and engine are Apache-2.0; the server, init and test packages are FSL-1.1-ALv2 (source-available, becoming Apache-2.0 after two years).
Overview
Reticle is a testing tool that lets a coding agent confirm its work by driving the running app and reading the network calls, app state and console behind each step, rather than judging screenshots. Each check returns pass, fail or cannot tell, naming the source line to fix, and a flow that passed can be saved and replayed without a model after later changes. Supported agents include Cursor, Claude Code, Codex and other MCP clients, on web frameworks such as React, Vue and Svelte and on Electron or Tauri desktop apps. A CI gate can block changes that touch a saved flow until it passes again.
Key features
- Verdicts of pass, fail or cannot tell with file and line
- Reads network, app state and console
- Saved flows replay without a model
- CI gate for saved flows
- Web and Electron or Tauri apps
Use cases
Alternatives
Last updated 2026-10-21