Agent security and governance: 8 companies ranked

Companies selling guardrails, runtime protection and governance for AI agents, in SalesBook agentic-sector rank order. Every company has a profile with dated public sources and a live check of its agent interfaces (MCP, llms.txt). Ranks use the published SalesBook method; tell us who is missing.

• Credal#43Enterprise platform to build and govern MCP servers and AI agents with inherited permissions, approvals and audit logs; cloud or customer VPC.
  MCP connector: nollms.txt: yes
• HiddenLayer#62AI security platform: AI asset discovery, model supply-chain scanning, attack simulation and runtime protection for agents; enterprise and federal buyers.
  MCP connector: nollms.txt: no
• Straiker#64Security for enterprise AI agents: agent discovery and governance, adversarial testing, and runtime detection/blocking of threats like data exfiltration.
  MCP connector: nollms.txt: yes
• Geordie AI#79AI agent governance platform for security and compliance leaders: agent discovery, behavioral observability, risk mapping and real-time remediation.
  MCP connector: nollms.txt: yes
• WitnessAI#80AI security and governance platform for enterprises covering employee AI use and AI agents: discovery, policy control, data redaction, runtime defense.
  MCP connector: nollms.txt: yes
• Lasso Security#86Security platform for AI agents and apps: discovery, posture management, red teaming, runtime guardrails and detection; for public sector, finance, health.
  MCP connector: yesllms.txt: yes
• Zenity#114Security and governance platform for AI agents across SaaS, custom agent platforms and endpoints: discovery, policy enforcement, threat detection.
  MCP connector: nollms.txt: yes
• Pillar Security#119AI security platform for discovering, red-teaming, guarding and governing AI agents and apps; cloud, self-hosted or hybrid, for CISOs and AppSec teams.
  MCP connector: yesllms.txt: no