Nessie (YC Fall 2025)

TL;DR: Nessie is a Y Combinator Fall 2025 startup A shared context layer for you, your team, and your agents., currently active with a team of 2.

A shared context layer for you, your team, and your agents.

YC ID
30880
YC Batch
Fall 2025
Status
Active
Team size
2
Industry
Consumer
YC profile
https://www.ycombinator.com/companies/nessie

Last verified:

Knowledge work is being restructured by AI. Strategy happens in Claude. Research happens in ChatGPT. Building happens in Claude Code. The people defining the next decade of work are already thinking with AI every day. But none of that thinking compounds. Every session starts from zero. The reasoning behind decisions, the context behind strategies, the evolution of ideas across hundreds of conversations - all of it evaporates. Nessie is the infrastructure that makes it permanent. We auto-sync AI conversations and agent traces across every major provider - ChatGPT, Claude, Gemini, Perplexity, Claude Code, OpenClaw, Codex, and more - and turn them into a context layer that is queryable, reusable, and shareable by you, your team, and your agents. No browser extension. No manual capture. Your…

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Frequently asked questions

Is Nessie a YC (Y Combinator) company?

Yes. Nessie was funded by Y Combinator in the Fall 2025 batch. A shared context layer for you, your team, and your agents.

What does Nessie do?

Knowledge work is being restructured by AI. Strategy happens in Claude. Research happens in ChatGPT. Building happens in Claude Code. The people defining the next decade of work are already thinking with AI every day. But none of that thinking compounds. Every session starts from zero. The reasoning behind decisions,…

What YC batch was Nessie in?

Nessie was part of Y Combinator's Fall 2025 batch.

How big is Nessie?

Nessie has a team of 2 people according to Y Combinator's directory.

Is Nessie still active?

Nessie is currently listed as Active with a team of 2 in Y Combinator's directory.

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