Devin memory: curated knowledge, session by session
Devin is a hosted agent, so memory is a product feature rather than a file you control. Knowledge items carry what you decided to teach it, and sessions carry the rest.
Cognition. Sources checked 2026-09-25.
How Devin handles memory today
Devin documents Knowledge as a structured library for onboarding and reference: tips, advice, and instructions that Devin recalls during sessions, each with a trigger description that tells it when to retrieve the item.
Knowledge is authored and maintained by you. Sessions accumulate context, and conclusions that never become a Knowledge item do not persist as a reusable asset.
What Devin forgets
A library you maintain by hand learns only as fast as you write.
- Session reasoning that was never turned into a Knowledge item.
- Cross-tool context, since your local agents cannot read Devin Knowledge.
- Detail as sessions end, even when the session produced a real decision.
- Anything a teammate learned, unless they wrote a Knowledge item too.
The fix with MemoryRouter
Keep decisions in a vault while your local tools work, and use Knowledge as a curated export for Devin. The vault is the record; Knowledge is the briefing.
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Make the vault the source of truth
Claude Code and Codex install with hooks; the rest connect over MCP. Decisions land in the vault as they happen, with search instead of a manual index.
Codex install example
npx -y memoryrouter-codex init --scope user - 2
Promote project-level facts into Knowledge
Write a Knowledge item for anything Devin needs at the start of a task: environment quirks, named components, deploy rules. Point it at the vault for anything that will change.
If Devin adds support for external memory servers, the vault is ready to connect. Until then, this split keeps both sides honest.
Share one memory across the tools you already run. 14-day free trial.
Related
GitHub Copilot memory
Repository instructions plus Copilot memory, and where a portable vault fits.
Claude Code memory
Keep project decisions across sessions and compaction with the published hook package.
AI agent forgets architecture decisions
You chose Postgres over SQLite in March, argued about it for an hour, and agreed.
Devin memory FAQ
Sources
Sources checked 2026-09-25. Tool behavior changes; check the vendor docs before relying on a detail.