curl -X GET 'https://api.elevenlabs.io/v1/convai/agents/agent-id/branches/branch-id/rebase-preview' \
  -H "xi-api-key: $ELEVENLABS_API_KEY"

# GET /v1/convai/agents/{agent_id}/branches/{branch_id}/rebase-preview (ElevenLabs API)
Base URL: https://api.elevenlabs.io
Auth: xi-api-key: <ELEVENLABS_API_KEY>
Last verified: 2026-09-03

> Preview Rebased Configuration

## Critical Gotchas
* Authentication uses the non-standard `xi-api-key` header, not `Authorization: Bearer`. Sending a Bearer token returns HTTP 401.
* Text-to-speech responses are raw binary audio, not JSON. Write the body to a file (`--output speech.mp3`) rather than parsing it.

## cURL
curl -X GET 'https://api.elevenlabs.io/v1/convai/agents/agent-id/branches/branch-id/rebase-preview' \
  -H "xi-api-key: $ELEVENLABS_API_KEY"

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| agent_id | path | string | Yes | The id of an agent. This is returned on agent creation. |
| branch_id | path | string | Yes | Unique identifier for the source branch to merge from. |

## Response (200 OK)
{"agent_id":"agent_7101k5zvyjhmfg983brhmhkd98n6","name":"My Agent"}

---
Need an API key? Get one at https://elevenlabs.io/app/sign-up

GET

/v1/convai/agents/{agent_id}/branches/{branch_id}/rebase-preview

ElevenLabs API

Preview Rebased Configuration

Base URL: https://api.elevenlabs.io
Auth: xi-api-key: <ELEVENLABS_API_KEY>
Last verified: 2026-09-03 · upstream hash matched

Actions

Agents: curl -H "Accept: text/markdown" this URL
→ 193 tokens · Vary: Accept

Critical gotchas

Authentication uses the non-standard xi-api-key header, not Authorization: Bearer. Sending a Bearer token returns HTTP 401.

Text-to-speech responses are raw binary audio, not JSON. Write the body to a file (--output speech.mp3) rather than parsing it.

cURL

curl -X GET 'https://api.elevenlabs.io/v1/convai/agents/agent-id/branches/branch-id/rebase-preview' \  -H "xi-api-key: $ELEVENLABS_API_KEY"

Get a free ElevenLabs API key → sponsored

Parameters

Name	In	Type	Required	Description
agent_id	path	string	Yes	The id of an agent. This is returned on agent creation.
branch_id	path	string	Yes	Unique identifier for the source branch to merge from.

Response 200 OK

{
  "agent_id": "agent_7101k5zvyjhmfg983brhmhkd98n6",
  "name": "My Agent",
  "workflow": {
    "edges": {
      "entry_to_tool_a": {
        "forward_condition": {
          "condition": "Tool A condition",
          "type": "llm"
        },
        "source": "entry_node",
        "target": "tool_node_a"
      },
      "start_to_entry": {
        "forward_condition": {
          "type": "unconditional"
        },
        "source": "start_node",
        "target": "entry_node"
      },
      "tool_a_to_failure": {
        "forward_condition": {
          "successful": false,
          "type": "result"
        },
        "source": "tool_node_a",
        "target": "failure_node"
      },
      "tool_a_to_tool_b": {
        "forward_condition": {
          "successful": true,
          "type": "result"
        },
        "source": "tool_node_a",
        "target": "tool_node_b"
      },
      "tool_b_to_agent_transfer": {
        "forward_condition": {
          "type": "unconditional"
        },
        "source": "tool_node_b",
        "target": "success_transfer"
      },
      "tool_b_to_conversation": {
        "forward_condition": {
          "condition": "Conversation condition",
          "type": "llm"
        },
        "source": "tool_node_b",
        "target": "success_conversation"
      },
      "tool_b_to_end": {
        "forward_condition": {
          "condition": "End condition",
          "type": "llm"
        },
        "source": "tool_node_b",
        "target": "success_end"
      },
      "tool_b_to_phone": {
        "forward_condition": {
          "expression": {
            "children": [
              {
                "name": "force_phone_transfer",
                "type": "dynamic_variable"
              },
              {
                "prompt": "Phone condition",
                "type": "llm",
                "value_schema": {
                  "description": "Phone condition",
                  "type": "boolean"
                }
              },
              {
                "left": {
                  "name": "mode",
                  "type": "dynamic_variable"
                },
                "right": {
                  "type": "string_literal",
                  "value": "dev"
                },
                "type": "eq_operator"
              }
            ],
            "type": "or_operator"
          },
          "type": "expression"
        },
        "source": "tool_node_b",
        "target": "success_phone"
      }
    },
    "nodes": {
      "entry_node": {
        "additional_knowledge_base": [],
        "additional_prompt": "",
        "additional_tool_ids": [],
        "conversation_config": {},
        "edge_order": [
          "entry_to_tool_a"
        ],
        "entry_behavior": "auto",
        "label": "Entry",
        "position": {
          "x": 0,
          "y": 0
        },
        "type": "override_agent"
      },
      "failure_node": {
        "additional_knowledge_base": [],
        "additional_prompt": "",
        "additional_tool_ids": [],
        "conversation_config": {},
        "edge_order": [],
        "entry_behavior": "auto",
        "label": "Failure",
        "position": {
          "x": 0,
          "y": 0
        },
        "type": "override_agent"
      },
      "start_node": {
        "edge_order": [
          "start_to_entry"
        ],
        "position": {
          "x": 0,
          "y": 0
        },
        "type": "start"
      },
      "success_conversation": {
        "additional_knowledge_base": [],
        "additional_prompt": "",
        "additional_tool_ids": [],
        "conversation_config": {},
        "edge_order": [],
        "entry_behavior": "auto",
        "label": "Success A",
        "position": {
          "x": 0,
          "y": 0
        },
        "type": "override_agent"
      },
      "success_end": {
        "edge_order": [],
        "position": {
          "x": 0,
          "y": 0
        },
        "return_when_nested": true,
        "type": "end"
      },
      "success_phone": {
        "custom_sip_headers": [],
        "edge_order": [],
        "position": {
          "x": 0,
          "y": 0
        },
        "require_acceptance": false,
        "sip_refer_play_dialtone": true,
        "transfer_destination": {
          "phone_number": "+1234567890",
          "type": "phone"
        },
        "transfer_type": "conference",
        "type": "phone_number"
      },
      "success_transfer": {
        "agent_id": "success_transfer_agent",
        "delay_ms": 0,
        "drop_history": false,
        "edge_order": [],
        "enable_transferred_agent_first_message": false,
        "isolate_history": false,
        "position": {
          "x": 0,
          "y": 0
        },
        "preserve_client_tts_overrides": false,
        "type": "standalone_agent"
      },
      "tool_node_a": {
        "edge_order": [
          "tool_a_to_failure",
          "tool_a_to_tool_b"
        ],
        "position": {
          "x": 0,
          "y": 0
        },
        "tools": [
          {
            "tool_id": "tool_a"
          },
          {
            "tool_id": "tool_b"
          }
        ],
        "type": "tool"
      },
      "tool_node_b": {
        "edge_order": [
          "tool_b_to_conversation",
          "tool_b_to_end",
          "tool_b_to_phone",
          "tool_b_to_agent_transfer"
        ],
        "position": {
          "x": 0,
          "y": 0
        },
        "tools": [
          {
            "tool_id": "tool_a"
          }
        ],
        "type": "tool"
      }
    },
    "prevent_subagent_loops": false,
    "subgraphs": {}
  }
}