# 3rd Party Agents

## Third-Party Agents

Third-party agents are AI systems you do not build or fully control — SaaS AI products, managed agent platforms, or agents running in environments where inline instrumentation or gateway proxying is not possible. For these, Highflame integrates at the **network layer** via Tailscale Aperture.

When LLM requests flow through Aperture, Highflame can evaluate them through two hook paths. The synchronous `pre_request` path calls Highflame before the request reaches the upstream model provider and can return an allow/block decision. The asynchronous `tool_call_entire_request` and `entire_request` paths send completed request context for tool-call visibility, sessions, and audit telemetry.

Key characteristics:

* **No agent-side changes required** — Aperture captures traffic at the network layer
* **Synchronous guardrails** — Highflame can allow or block pre-request traffic before it reaches the model provider
* **Asynchronous observability** — Highflame can record completed requests, tool calls, users, and sessions after the provider response
* **Policy-mode control** — monitor-mode policies record would-block telemetry while enforce-mode policies can block

**Start here:** [Tailscale](/integrations/tailscale.md)

For setup and configuration: [Setup Guide](/integrations/tailscale/setup-guide.md) · [Troubleshooting](/integrations/tailscale/troubleshooting.md)


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