Memstack

MemStack is a skill framework and memory add on for Claude Code. It addresses the way Claude Code forgets a project between sessions by keeping verified facts about the project and injecting them at the start of each session, alongside a library of skills that load when they are relevant to the task. Every remembered fact carries a date, a source and a note on how it was learned. When something changes, the old fact is superseded rather than silently overwritten, and the vendor says the session start context stays under 1,500 tokens. A companion feature called TokenStack applies compression to requests, and the vendor reports average savings of 15.85 percent across 40,743 logged production requests between May and July 2026. The framework ships 131 skills spanning security audits such as row level security and OWASP checks, API auditing, database design, test writing, deployment, SEO audits, marketing copy, product requirements documents and contract templates. A dashboard and an Agent Runner are included in the paid version. A free version with 87 skills is available. Pro pricing is $15 per month, $99 per year, or a one time lifetime payment of $299 described as founding member pricing. Every paid plan carries a seven day money back guarantee and payment is handled through Stripe. A referral program pays $10 for each paid signup. The product suits developers who work mainly in Claude Code.