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The Oso browser extension detects when employees use browser-based AI tools such as ChatGPT, Claude.ai, or Gemini, and reports usage back to Oso. For supported web apps, the extension also enables full session monitoring.

What it detects

The extension monitors sessions to known AI web app domains. A “session” is counted when a user starts a conversation with an AI tool, not just when they visit the page.

Monitored (full session content)

For these web apps, the extension captures full session content, including prompts, completions, and tool calls:
  • Claude.ai
  • ChatGPT
  • Gemini

Discovered (domain-level detection)

For these web apps, the extension detects that the agent is being used, but does not capture session content:
  • Deepseek
  • Grok
  • Perplexity
  • Mistral
  • Cohere

What appears in the inventory

Discovered browser agents appear in the same agent inventory as endpoint and CLI agents:
ColumnDescription
AgentThe AI web app detected, tagged as “Browser” environment
UsersWhich users accessed the web app
DevicesWhich devices the access came from
Last SeenWhen the agent was last used
The detection source shows “Browser Extension” so you can distinguish it from EDR or proxy discoveries.

Supported browsers

  • Chrome
  • Edge
  • Firefox

Deployment

The browser extension is deployed via managed browser policies, such as Chrome Enterprise policy push. The extension is configured with your Oso Environment ID at install time. This approach allows organization-wide deployment without requiring individual employees to install anything manually.

Privacy considerations

The browser extension’s detection behavior depends on the agent:
  • Monitored agents: full session content (prompts and completions) is captured and sent to Oso
  • Discovered agents: only domain-level visit data is captured. Oso knows which AI tool was accessed, not what was discussed
For details on how Oso processes agent activity data, see Data Privacy.