Runtime guardrails and AI firewalls · #5 by signal score
HiddenLayer
AI security platform with runtime detection and response for models and agents: evaluates model requests, responses, and tool calls against policy and can block or redact them, alongside AI discovery, supply chain scanning, and attack simulation.
47Signal score / 100
- Capital
- 17.4/35
- Product
- 10/25
- Standards
- 0/20(not yet assessed)
- Momentum
- 20/20
Identity primitives
| Agent as a first-class identity | Not checked |
| On-behalf-of token exchange | Not checked |
| Cross App Access (ID-JAG) | Not checked |
| Asynchronous human approval (CIBA) | Not checked |
| MCP authorization conformance | Not checked |
| Fine-grained authorization | Not checked |
| Short-lived, secretless credentials | Not checked |
| Token vault | Not checked |
| Kill switch | No public claim found |
| Per-action audit chain | No public claim found |
Company
HQ: US
Funding: $150M disclosed, latest Series B
Product: HiddenLayer AI Runtime Security
Sources
- HiddenLayer docs: Agentic Runtime Security (vendor, accessed 2026-09-23)
- HiddenLayer Console release notes (vendor, accessed 2026-09-23)
- HiddenLayer raises $100M Series B to advance AI security (vendor, accessed 2026-09-23)
- HiddenLayer nabs $100M as enterprises rush to secure their AI deployments (trade-press, accessed 2026-09-23)
Last verified 2026-09-23.