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

> Create Procedure

## 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 POST 'https://api.elevenlabs.io/v1/convai/agents/agent-id/branches/branch-id/procedures' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"name":"","content":"","type":"free_form","trigger":"string"}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| agent_id | path | string | Yes | Agent ID to get the procedure draft from |
| branch_id | path | string | Yes | Branch ID to get the procedure draft from |
| name | body | string | No | Procedure name |
| content | body | string | No | Initial procedure content |

## Response (200 OK)
{"procedure_id":"agtprc_6qbpwdq8n01bxhk44bgjy6f10ck3"}

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