# Reticle

MCP server and dev-only SDK that lets coding agents (Claude Code, Cursor, Codex and other MCP clients) drive your running web or desktop app and return a pass, fail or cannot-tell verdict with the network calls, app state, console output and file:line behind it.

- Website: https://www.reticle.sh
- Hub: Vibe Coding
- Category: Agent verification / testing
- Best for: Checking that your coding agent's "done" is actually done
- Pricing: Not yet verified
- Free tier: Yes
- Open source: Yes
- License: Apache-2.0 (SDK, engine) + FSL-1.1-ALv2 (server, CLI, MCP)
- Note: Source: github.com/reticlehq/reticle (about 1.3k stars on 2026-10-20) and reticle.sh. The local dev loop is free and sends nothing off your machine; the hosted platform (run history, the Harness) is "free to start, no credit card required" per reticle.sh. No public paid price list found on 2026-10-20. Supports React, Next.js, Vue, Svelte, Angular, Electron and Tauri per the README; the homepage FAQ says React and Next today. Not yet tested or ranked.
- Hands-on test: coming
- Page: https://vibetested.app/tools/reticle/