Why does v0 forget my component context?

v0 forgets your component context because each chat is a fresh session — previously built components, their props, variants, and usage patterns do not load into new chats unless you re-paste them or wire them into a registry. The fix is to store your component inventory in a persistent memory layer.

v0's chat model is the source of the forgetting. Each generation lives inside its own thread, and components built in one thread are not part of any global memory.

1. Independent generation sessions. Vercel documents that each session is independent. The model that built your DataTable yesterday cannot recall it today unless the relevant code is in the current chat.

2. Registries are opt-in per chat. The shadcn registry pattern lets you push components into v0 as context, but you have to connect the registry every time and keep it updated as new components ship. Components you built in v0 itself do not automatically flow back into the registry.

3. Chat context limits. v0 chats have a token cap. When you load a big component library into the chat, you eat into the window available for new generation, and older components fall out of working memory as the conversation grows.

The result: v0 knows what is in the current chat. It does not know what you built last week.

Component drift is the most visible version of this problem:

• Duplicate components. v0 generates Table v2, then Table v3, then Table v4, each subtly different from the last. The codebase fills with near-clones.
• Prop drift. The same conceptual component ends up with different prop names (onRowClick here, onSelect there), so reuse becomes refactoring.
• Behavior regressions. Edge cases you solved in the first version — empty states, loading states, keyboard navigation — vanish in the second, because v0 cannot see the first.

For non-developers using v0 as their primary build surface, this is the moment a project stops feeling like a product and starts feeling like a folder of demos.

Vercel has shipped the right primitives. They do not yet add up to a memory layer.

Projects. Grouping chats inside a Project keeps related work together and shares some context. It does not give the model a persistent index of every component you have built.

Registry connections. Connecting a shadcn registry pushes your component library into v0's context per chat. Strong for components you maintain in your own repo. Weaker for components v0 itself generated that you have not yet folded back into the registry.

Manual paste. You can copy the existing component into the new chat and ask v0 to extend it. This works for one component at a time and breaks down once your inventory passes a few dozen.

Vercel's design-system guidance lives at the v0 docs. It is honest about the gap: registries solve component sharing, not component memory.

Component context is not just code. It is the reasoning behind a component's props, the edge cases the original version handled, the design rationale for choosing a card over a list. Even when the code is in a registry, the why behind it is in a chat that v0 will not see again.

Cross-tool work makes the gap worse. Move from v0 to Bolt to wire up data, or to Cursor to refactor, and the component context goes blank.

MemoryLake gives your component inventory a durable home that every chat and every tool can read.

• Component records as structured memory. Each component (purpose, props, variants, usage rules, edge cases handled) lives as a named entry in the Memories tab. v0 sees the whole inventory whenever you load the briefing.
• Source code in the Document Drive. Drop in your component files and storybook entries through the Document Drive. The retrieval engine returns only the relevant component when you ask for a related screen.
• Same inventory across tools. When you jump from v0 to Bolt, Cursor, Lovable, or Claude, the same component memory follows so you reuse instead of re-generate.

MemoryLake scored 94.03% on the LoCoMo long-context benchmark, with millisecond retrieval and AES-256 end-to-end encryption.

1. Create a project and load your component inventory. Sign in to MemoryLake, open Project Management, click Create Project, and name it "v0 — component inventory". Upload your existing component source files, storybook entries, and usage docs through the Document Drive. Add a Memories entry per component describing purpose, props, and any edge cases worth preserving.
2. Generate an MCP Server endpoint. Open the MCP Servers tab, click Add MCP Server, name it "v0 components", and click Generate. Copy the Bearer token immediately — it is shown only once.
3. Connect v0. v0 does not yet speak MCP, so use the MemoryLake REST API with your Bearer token to fetch the relevant component briefing before each new v0 chat, then paste it as the opening message. Combine with your shadcn registry for the actual code; MemoryLake adds the missing why and the broader inventory.