Prismor: Open-source runtime control plane for AI agents

Prismor launched as a free, open-source security layer that sits between AI coding agents such as Claude Code, Codex, and Cursor and the actions those agents take, checking each tool call against a policy before it runs. Every call receives one of three verdicts: allow, warn, or block. The runtime control plane targets agents that run shell commands, read and write files, handle credentials, and call outside APIs, often chaining many steps.

Prismor is a free, open-source security layer for AI coding agents. It sits between an agent such as Claude Code, Codex, or Cursor and the actions that agent wants to take, and it checks each tool call against a policy before the call runs. Every call gets one of three verdicts: allow, warn, or block. AI coding agents run shell commands, read and write files, handle credentials, and call outside APIs, often chaining many steps … More https://www.helpnetsecurity.com/2026/09/23/prismor-open-source-ai-agent-security/ The post Prismor: Open-source runtime control plane for AI agents https://www.helpnetsecurity.com/2026/09/23/prismor-open-source-ai-agent-security/ appeared first on Help Net Security https://www.helpnetsecurity.com .