Harden

Check coding-agent tool calls locally before execution

Meet Harden

Harden provides a local security monitor for supported coding agents. Its Agentic Integrity Foundation examines tool calls before execution and can block a call, redact information, request review, or record an allowed action. Native agent hooks and an MCP proxy connect the monitor to different development workflows, while a local history supports later inspection.

The product focuses on risks that arise when an agent can reach files, credentials, services, and infrastructure during a task. Individual developers can begin with its core controls, and enterprise options add managed deployment and reporting. Platform support and hardware requirements matter: the full local model targets supported Apple Silicon Macs, with separate CLI and daemon support for specified environments.

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Product details

Website: harden.run
Status: Launched
Category: Security & privacy
Listed: Oct 15, 2026

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AI agents Command line Developer tools Local first Security

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