codex

AgentGuards

LLM security guardrails for OpenAI Codex — jailbreak detection, prompt-injection and web-content scanning, data-exfiltration blocking, and destructive-command authorization. Enforced by hooks on every prompt, shell command, fetched page and file edit.

1,566 on GitHubby AgentGuardsv0.2.18MITupdated today

Ships a Codex manifest but no marketplace file, so Codex can't add it by name yet. Add it to a local marketplace (.agents/plugins/marketplace.json).

Plugin agentguards-codex in hashgraph-online/awesome-codex-plugins. Commands read from the repo's manifest — today.

This plugin runs code on your machine — its hooks fire automatically on events like tool use. The exact commands are listed below; read them before installing.

What it installs

Skills (3)

  • guardrails

    How AgentGuards enforces its guardrails in Codex — fully automatic, via hooks, with nothing for you to call. Load this if asked how AgentGuards works, whether you need to screen something yourself, or why no agentguards check_input / authorize_action tools are available.

  • setup

    Set up and verify AgentGuards in Codex. Use when the user asks to configure AgentGuards, set their API key, or check that the guardrails are wired up correctly.

  • status

    Report AgentGuards guardrail status. Use when the user asks whether AgentGuards is active, healthy, or correctly configured in Codex.

Hooks (4)

  • UserPromptSubmit

    sh "${PLUGIN_ROOT}/scripts/run-hook.sh" UserPromptSubmit

  • PreToolUse

    sh "${PLUGIN_ROOT}/scripts/run-hook.sh" PreToolUse

  • PostToolUse

    sh "${PLUGIN_ROOT}/scripts/run-hook.sh" PostToolUse

  • PermissionRequest

    sh "${PLUGIN_ROOT}/scripts/run-hook.sh" PermissionRequest

View source on GitHub agentguards.co

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