
Silmaril
Security for agents that self-improves
About
Silmaril is the first security for agents that self-improves. It understands application context to block 2x as many threats as current SOTA defenses with 10x lower latency. Customers plug us into agentic frameworks like LangGraph with 5 lines of code. Silmaril has stopped $28M of damages for customers.
Topics
- Location
- San Francisco, CA, United States
- Team size
- 2 employees
- YC batch
- Spring 2026
- Status
- Active
- Stage
- Early stage





