ContextFort

ContextFort is a runtime security layer purpose-built for AI agents operating on developer endpoints. The tool positions itself as "Anti-Virus for Autonomous Agents," intercepting every command that an AI coding agent executes and applying policy-based controls before damage can occur. Rather than replacing existing endpoint security, ContextFort targets a gap: traditional tools have no awareness of AI-generated actions, treating them identically to human-driven or automated process activity.

How It Works

ContextFort operates through two delivery mechanisms. For CLI-based autonomous agents — the kind that run in terminals and interact with file systems — it installs via npm as a global package (@contextfort-ai/openclaw-secure). Once installed, it sits between the agent process and the operating system, evaluating each command in real time. For browser-based agents, ContextFort provides a Chrome extension that surfaces visibility into agent actions within the browser environment.

The core runtime capabilities cover four areas. Command interception ensures every agent action passes through a security evaluation layer. Dangerous-action blocking prevents harmful operations — file deletions, unauthorized network calls, or system modifications — from executing. Secret redaction strips credentials such as AWS keys, database passwords, and API tokens before they can be sent to external AI provider APIs. Prompt injection detection identifies attempts to manipulate agent behavior through crafted inputs.

The Secret Leakage Vector

ContextFort's vendor documentation highlights a specific, often-overlooked risk: non-malicious secret exfiltration. An AI agent reading .env files to understand a project's structure may inadvertently send those credentials to an external API as part of its normal context-gathering workflow. The agent is not compromised or malicious — it is simply doing what it was instructed to do. ContextFort redacts these secrets at the interception layer, addressing a vector that traditional Data Loss Prevention tools may not catch because the agent process itself is not flagged as suspicious.

Browser Agent Scope

The browser extension component is purpose-built for Comet, a specific browser agent framework. Through this extension, teams gain visibility into browser agent behavior — but the documentation does not describe support for other browser agent frameworks or general-purpose browser automation tools. This narrows the immediate applicability for teams using alternative browser agent solutions.

Limitations and Evaluation Path

Access to ContextFort requires booking a demo; there is no publicly documented self-serve signup, pricing tier, or free trial. The project maintains a public GitHub repository, and the npm package is technically installable, but meaningful evaluation depends on vendor engagement. For teams exploring agent security within the broader AI Contract Management ecosystem, ContextFort represents an early entrant in the endpoint-level AI agent visibility category — one that addresses a real and growing attack surface but remains at an early stage of public maturity.