> For the complete documentation index, see [llms.txt](https://docs.orbitfin.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.orbitfin.ai/orbit-api-reference/a2a/4.-integration-example.md).

# 4. Integration Example

Agent Builder currently provides server-side capabilities externally through the A2A protocol. There are two integration methods:

Method One: Custom Agent Integration with A2A — Build your own intelligent agent with reasoning capabilities (the "outer Agent"), which autonomously decides when to call Agent Builder through the A2A protocol.

Method Two: Integration with A2A through an Existing Online Service — Directly integrate Agent Builder into the agent platform you are already using (for example, Microsoft Copilot Studio), without needing to develop any outer agent yourself.

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