Startup
Prompt Security (SentinelOne)
GenAI and agent security, from SentinelOne
Prompt Security, now branded 'Prompt Security from SentinelOne', provides AI security with guardrails for sensitive data, secrets and prompt injection. It publishes open-source tools including ClawSec (securing agent skills for OpenClaw, NanoClaw and Hermes agents), OneClaw (tracking OpenClaw deployments) and ps-fuzz (testing system prompt resilience).
In research (1)
Oct 27, 2026 · Commercial application-layer prompt-injection protection; HoS is a model-layer complement.
Neighbours in the directory
New York, NY · Est. 2023
Red-teaming and robustness for AI agents.
Haize Labs stress-tests agents with automated adversarial attacks — prompt injection, tool misuse, unsafe actions — and ships an SDK for continuous safety evaluation in CI.
San Francisco, CA · Est. 2024
Automated evaluation and guardrails for LLM systems.
Patronus AI scores outputs against policy and business criteria in CI and production, catching regressions before users do — 'unit tests for AI'.
United States
Human approval and context engineering for agents.
HumanLayer builds tooling for human-in-the-loop agent workflows and authored '12-Factor Agents' — the widely-cited methodology for building production harnesses. Now focused on agentic code review tooling.
Connections
Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.
Built on · 1
- OpenClawProject
Sources
Verified Oct 29, 2026