Plan, build, review, and ship
Keystone helps developers move from ambiguity to verified delivery with 9 focused skills for understanding codebases, planning changes, implementing and refactoring safely, diagnosing failures, reviewing work, and shipping with evidence. Each skill keeps the current phase explicit, protects user-owned work, and requires proof before completion claims.
Skills 9 in the ChatGPT listing
Change review Project change review for a concrete diff, branch, PR, patch, migration, fix, implementation result, or project plan that needs a new evidence-backed readiness verdict, or when another Keystone skill needs the Review Gate evaluated. Context survey Project context survey for repository reconnaissance or project decisions that require evidence from existing code, project documentation, or project-specific external sources before planning or changing the project. implementation Executable-software implementation in an identified software project for features, diagnosed fixes, migrations, integrations, and build or release automation. Product planning Software product planning for a concrete software or digital-product initiative whose behavior, UX, user-facing copy, technical direction, scope, or acceptance criteria must be shaped before implementation, or whose approved direction must become a specification. Project audit Project health audit for a concrete software repository or product subsystem. refactoring Program source-code refactoring for an explicit structural code improvement to structure, ownership, types, or duplication that preserves identified executable behavior. Root cause analysis Project debugging for a concrete failure in a software or product system. shipping Project shipping is authorized immediate delivery execution for identified, already-completed software work. Task creation Project delivery breakdown for a concrete software or product goal. 
