# Your Agent Harness Needs Runtime Security

DevFeed: [Your Agent Harness Needs Runtime Security](<https://devfeed.tech/articles/your-agent-harness-needs-runtime-security-18249.md>)

Original publisher: [Read original article](<https://blog.dailydoseofds.com/p/your-agent-harness-needs-runtime>)

Author: Avi Chawla

Published: 2026-09-09T20:59:58Z

Content type: tutorial

Language: en

Sources: [Daily Dose of Data Science](<https://devfeed.tech/sources/daily-dose-of-data-science.md>)

Topics: [agent observability](<https://devfeed.tech/topics/agent-observability.md>), [Agent Harness](<https://devfeed.tech/topics/agent-harness.md>), [Security](<https://devfeed.tech/topics/security.md>), [Open Source](<https://devfeed.tech/topics/open-source.md>), [telemetry](<https://devfeed.tech/topics/telemetry.md>)

Tags: [agent](<https://devfeed.tech/tags/agent.md>), [agent-harness](<https://devfeed.tech/tags/agent-harness.md>), [ai-agents](<https://devfeed.tech/tags/ai-agents.md>), [anthropic](<https://devfeed.tech/tags/anthropic.md>), [claude](<https://devfeed.tech/tags/claude.md>), [cybersecurity](<https://devfeed.tech/tags/cybersecurity.md>), [github](<https://devfeed.tech/tags/github.md>), [guide](<https://devfeed.tech/tags/guide.md>), [local](<https://devfeed.tech/tags/local.md>), [monitoring](<https://devfeed.tech/tags/monitoring.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [security](<https://devfeed.tech/tags/security.md>), [telemetry](<https://devfeed.tech/tags/telemetry.md>)

## AI overview

This guide presents Agent Beacon, an open-source telemetry layer for AI agents. It records tool calls, shell commands, file changes, and approval decisions as structured runtime events across supported agent harnesses, providing a live record of agent behavior for security monitoring and investigation.

## Source excerpt

A 100% local, open-source guide to recording what AI agents actually do at runtime.