StartupY Combinator (S25)
Nia
A context layer for coding agents that indexes code and documentation for Cursor, Claude Code and MCP clients.
Nia indexes codebases and documentation and serves that context to coding agents such as Cursor and Claude Code, and to other MCP clients, so agents answer from the real source rather than guesses. The Y Combinator S25 company launched on Hacker News in December 2025 with 131 points.
Neighbours in the directory
Berkeley, CA · Est. 2024
Stateful agents with memory, from the team behind MemGPT.
Letta (formerly MemGPT, out of UC Berkeley) builds an agent server with built-in memory, context management and state — letting agents persist, learn and be edited like files rather than living in a chat window.
$10M seed led by Felicis (2024)
San Francisco, CA · Est. 2023
The integration layer: hundreds of managed tools your agents can call.
Composio handles auth, schemas, observability and reliability for the external SaaS tools an agent uses — 'plumbing for agentic actions' across Slack, GitHub, Salesforce and 250+ other surfaces.
Est. 2024
A registry and toolchain for MCP servers.
Smithery indexes and helps deploy MCP (Model Context Protocol) servers — a distribution layer for the tool ecosystem agents connect to.
Connections
Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.
Built on · 2
- Claude CodeProject
- Model Context ProtocolProject
Similar entries · 3
- Claude ContextProject
- DosuStartup
- SourcegraphStartup
Sources
Verified Oct 29, 2026