Get an agent revision

curl --request GET \
  --url https://api-sandbox.featherhq.com/v1/agents/revisions/{revision_id} \
  --header 'x-api-key: <api-key>'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "agent_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "name": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "description": "<string>",
  "persona": "<string>",
  "system_prompt": "<string>",
  "global_skill_ids": [
    "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  ],
  "context_variables": [
    {
      "name": "<string>",
      "source": "derived",
      "enum_values": [
        "<string>"
      ],
      "reask_cap": 123,
      "description": "<string>"
    }
  ],
  "variable_defaults": {},
  "tool_refs": [
    {}
  ],
  "knowledge_base_refs": [
    {}
  ],
  "policies_enabled": true,
  "policy_refs": [
    {}
  ],
  "channel_specific_config": {},
  "router_config_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "model_settings": {
    "model": "<string>",
    "config": {
      "temperature": 123,
      "max_tokens": 123,
      "top_p": 123,
      "stop_sequences": [
        "<string>"
      ],
      "request_timeout_ms": 123,
      "thinking_budget": 2
    }
  },
  "kb_clearance_level": 123,
  "kb_audience_tags": [
    "<string>"
  ],
  "created_by": "<string>"
}