# heal > heal turns a codebase into a production-like testable sandbox and deploys an opinionated end-to-end testing strategy. It runs locally, documents the codebase into specs, writes and runs tests against the sandbox, and tracks real bugs and coverage gaps — instead of reporting a coverage percentage. heal is not a general-purpose coding agent. It is a focused QA tool: given a codebase, it (1) sets up a local sandbox that mimics production, (2) documents the codebase into testable specs, (3) writes and executes end-to-end tests against the sandbox with recorded proof of work, and (4) keeps the sandbox, specs, and tests in sync as the codebase changes. Company: heal, legal entity MYIA SAS. Website: https://heal.dev ## Problem it solves Most automated QA strategies fail for three reasons: no testable environments (staging is missing services, data, or integrations), no clear testing strategy (teams don't know what to test — end-to-end? happy paths? edge cases?), and missing coverage (a high coverage percentage that doesn't reflect real integration testing). ## Product - Sandbox: a fully functional local environment that closely mimics production, so there is somewhere real to test against. - Specs: heal scans the codebase to produce or update specs for spec-driven development. - Tests: heal implements and runs tests against the sandbox and records video as proof of work. - Tracking: heal surfaces real bugs and coverage gaps, not a synthetic coverage percentage. ## Trust heal is SOC 2 certified. Trust center: https://trust.heal.dev ## Links - Homepage: https://heal.dev - Early access signup: https://heal.dev/#join - Trust center: https://trust.heal.dev - X / Twitter: https://x.com/healdevHQ - LinkedIn: https://www.linkedin.com/company/heal-dev