{
  "opencollection": "1.0.0",
  "info": {
    "name": "Retell AI API",
    "version": "2.0"
  },
  "request": {
    "auth": {
      "type": "bearer",
      "token": "{{bearerToken}}"
    }
  },
  "items": [
    {
      "info": { "name": "Agent", "type": "folder" },
      "items": [
        {
          "info": { "name": "Create a new voice agent.", "type": "http" },
          "http": { "method": "POST", "url": "https://api.retellai.com/create-agent", "body": { "type": "json", "data": "{\n  \"response_engine\": { \"type\": \"retell-llm\", \"llm_id\": \"llm_...\" },\n  \"voice_id\": \"11labs-Adrian\",\n  \"agent_name\": \"My Agent\"\n}" } },
          "docs": "Create a new voice agent."
        },
        {
          "info": { "name": "Retrieve an agent.", "type": "http" },
          "http": { "method": "GET", "url": "https://api.retellai.com/get-agent/{{agent_id}}" },
          "docs": "Retrieve an agent."
        },
        {
          "info": { "name": "List all agents.", "type": "http" },
          "http": { "method": "GET", "url": "https://api.retellai.com/list-agents" },
          "docs": "List all agents."
        },
        {
          "info": { "name": "Update an agent.", "type": "http" },
          "http": { "method": "PATCH", "url": "https://api.retellai.com/update-agent/{{agent_id}}", "body": { "type": "json", "data": "{}" } },
          "docs": "Update an agent."
        },
        {
          "info": { "name": "Delete an agent.", "type": "http" },
          "http": { "method": "DELETE", "url": "https://api.retellai.com/delete-agent/{{agent_id}}" },
          "docs": "Delete an agent."
        }
      ]
    },
    {
      "info": { "name": "Retell LLM", "type": "folder" },
      "items": [
        {
          "info": { "name": "Create a Retell LLM response engine.", "type": "http" },
          "http": { "method": "POST", "url": "https://api.retellai.com/create-retell-llm", "body": { "type": "json", "data": "{\n  \"general_prompt\": \"You are a helpful assistant.\",\n  \"model\": \"gpt-4.1\",\n  \"begin_message\": \"Hello, how can I help you today?\"\n}" } },
          "docs": "Create a Retell LLM response engine."
        },
        {
          "info": { "name": "Retrieve a Retell LLM.", "type": "http" },
          "http": { "method": "GET", "url": "https://api.retellai.com/get-retell-llm/{{llm_id}}" },
          "docs": "Retrieve a Retell LLM."
        },
        {
          "info": { "name": "List all Retell LLMs.", "type": "http" },
          "http": { "method": "GET", "url": "https://api.retellai.com/list-retell-llms" },
          "docs": "List all Retell LLMs."
        },
        {
          "info": { "name": "Update a Retell LLM.", "type": "http" },
          "http": { "method": "PATCH", "url": "https://api.retellai.com/update-retell-llm/{{llm_id}}", "body": { "type": "json", "data": "{}" } },
          "docs": "Update a Retell LLM."
        },
        {
          "info": { "name": "Delete a Retell LLM.", "type": "http" },
          "http": { "method": "DELETE", "url": "https://api.retellai.com/delete-retell-llm/{{llm_id}}" },
          "docs": "Delete a Retell LLM."
        }
      ]
    },
    {
      "info": { "name": "Conversation Flow", "type": "folder" },
      "items": [
        {
          "info": { "name": "Create a conversation flow.", "type": "http" },
          "http": { "method": "POST", "url": "https://api.retellai.com/create-conversation-flow", "body": { "type": "json", "data": "{\n  \"global_prompt\": \"You are a helpful assistant.\",\n  \"nodes\": [],\n  \"start_node_id\": \"start\"\n}" } },
          "docs": "Create a conversation flow."
        },
        {
          "info": { "name": "Retrieve a conversation flow.", "type": "http" },
          "http": { "method": "GET", "url": "https://api.retellai.com/get-conversation-flow/{{conversation_flow_id}}" },
          "docs": "Retrieve a conversation flow."
        },
        {
          "info": { "name": "List all conversation flows.", "type": "http" },
          "http": { "method": "GET", "url": "https://api.retellai.com/list-conversation-flows" },
          "docs": "List all conversation flows."
        },
        {
          "info": { "name": "Update a conversation flow.", "type": "http" },
          "http": { "method": "PATCH", "url": "https://api.retellai.com/update-conversation-flow/{{conversation_flow_id}}", "body": { "type": "json", "data": "{}" } },
          "docs": "Update a conversation flow."
        },
        {
          "info": { "name": "Delete a conversation flow.", "type": "http" },
          "http": { "method": "DELETE", "url": "https://api.retellai.com/delete-conversation-flow/{{conversation_flow_id}}" },
          "docs": "Delete a conversation flow."
        }
      ]
    },
    {
      "info": { "name": "Phone Call", "type": "folder" },
      "items": [
        {
          "info": { "name": "Create an outbound phone call.", "type": "http" },
          "http": { "method": "POST", "url": "https://api.retellai.com/v2/create-phone-call", "body": { "type": "json", "data": "{\n  \"from_number\": \"+14157774444\",\n  \"to_number\": \"+12137774445\",\n  \"override_agent_id\": \"agent_...\"\n}" } },
          "docs": "Create an outbound phone call."
        }
      ]
    },
    {
      "info": { "name": "Web Call", "type": "folder" },
      "items": [
        {
          "info": { "name": "Create a web call.", "type": "http" },
          "http": { "method": "POST", "url": "https://api.retellai.com/v2/create-web-call", "body": { "type": "json", "data": "{\n  \"agent_id\": \"agent_...\"\n}" } },
          "docs": "Create a web call. Returns an access_token for the Retell Web Client SDK."
        }
      ]
    },
    {
      "info": { "name": "Call", "type": "folder" },
      "items": [
        {
          "info": { "name": "Retrieve a call.", "type": "http" },
          "http": { "method": "GET", "url": "https://api.retellai.com/get-call/{{call_id}}" },
          "docs": "Retrieve a call including transcript, recording, analysis, and cost."
        },
        {
          "info": { "name": "List calls.", "type": "http" },
          "http": { "method": "POST", "url": "https://api.retellai.com/list-calls", "body": { "type": "json", "data": "{\n  \"filter_criteria\": { \"agent_id\": [\"agent_...\"] },\n  \"sort_order\": \"descending\",\n  \"limit\": 50\n}" } },
          "docs": "List calls with optional filters, sort, and pagination."
        }
      ]
    },
    {
      "info": { "name": "Batch Call", "type": "folder" },
      "items": [
        {
          "info": { "name": "Create a batch call.", "type": "http" },
          "http": { "method": "POST", "url": "https://api.retellai.com/create-batch-call", "body": { "type": "json", "data": "{\n  \"from_number\": \"+14157774444\",\n  \"name\": \"June Campaign\",\n  \"tasks\": [ { \"to_number\": \"+12137774445\" } ]\n}" } },
          "docs": "Create a batch call campaign."
        }
      ]
    },
    {
      "info": { "name": "Phone Number", "type": "folder" },
      "items": [
        {
          "info": { "name": "Buy a phone number.", "type": "http" },
          "http": { "method": "POST", "url": "https://api.retellai.com/create-phone-number", "body": { "type": "json", "data": "{\n  \"area_code\": 415,\n  \"inbound_agent_id\": \"agent_...\",\n  \"outbound_agent_id\": \"agent_...\"\n}" } },
          "docs": "Buy a phone number."
        },
        {
          "info": { "name": "Import an existing phone number.", "type": "http" },
          "http": { "method": "POST", "url": "https://api.retellai.com/import-phone-number", "body": { "type": "json", "data": "{\n  \"phone_number\": \"+14157774444\",\n  \"termination_uri\": \"someuri.pstn.twilio.com\"\n}" } },
          "docs": "Import an existing phone number via SIP trunk."
        },
        {
          "info": { "name": "Retrieve a phone number.", "type": "http" },
          "http": { "method": "GET", "url": "https://api.retellai.com/get-phone-number/{{phone_number}}" },
          "docs": "Retrieve a phone number."
        },
        {
          "info": { "name": "List phone numbers.", "type": "http" },
          "http": { "method": "GET", "url": "https://api.retellai.com/list-phone-numbers" },
          "docs": "List phone numbers."
        },
        {
          "info": { "name": "Update a phone number.", "type": "http" },
          "http": { "method": "PATCH", "url": "https://api.retellai.com/update-phone-number/{{phone_number}}", "body": { "type": "json", "data": "{}" } },
          "docs": "Update a phone number."
        },
        {
          "info": { "name": "Delete (release) a phone number.", "type": "http" },
          "http": { "method": "DELETE", "url": "https://api.retellai.com/delete-phone-number/{{phone_number}}" },
          "docs": "Delete (release) a phone number."
        }
      ]
    },
    {
      "info": { "name": "Voice", "type": "folder" },
      "items": [
        {
          "info": { "name": "List all available voices.", "type": "http" },
          "http": { "method": "GET", "url": "https://api.retellai.com/list-voices" },
          "docs": "List all available voices."
        },
        {
          "info": { "name": "Retrieve a voice.", "type": "http" },
          "http": { "method": "GET", "url": "https://api.retellai.com/get-voice/{{voice_id}}" },
          "docs": "Retrieve a voice."
        }
      ]
    },
    {
      "info": { "name": "Knowledge Base", "type": "folder" },
      "items": [
        {
          "info": { "name": "Create a knowledge base.", "type": "http" },
          "http": { "method": "POST", "url": "https://api.retellai.com/create-knowledge-base", "body": { "type": "multipart-form", "data": [] } },
          "docs": "Create a knowledge base from texts, files, and URLs."
        },
        {
          "info": { "name": "Retrieve a knowledge base.", "type": "http" },
          "http": { "method": "GET", "url": "https://api.retellai.com/get-knowledge-base/{{knowledge_base_id}}" },
          "docs": "Retrieve a knowledge base."
        },
        {
          "info": { "name": "List all knowledge bases.", "type": "http" },
          "http": { "method": "GET", "url": "https://api.retellai.com/list-knowledge-bases" },
          "docs": "List all knowledge bases."
        },
        {
          "info": { "name": "Add sources to a knowledge base.", "type": "http" },
          "http": { "method": "POST", "url": "https://api.retellai.com/add-knowledge-base-sources/{{knowledge_base_id}}", "body": { "type": "multipart-form", "data": [] } },
          "docs": "Add sources to a knowledge base."
        },
        {
          "info": { "name": "Delete a knowledge base source.", "type": "http" },
          "http": { "method": "DELETE", "url": "https://api.retellai.com/delete-knowledge-base-source/{{knowledge_base_id}}/source/{{source_id}}" },
          "docs": "Delete a knowledge base source."
        },
        {
          "info": { "name": "Delete a knowledge base.", "type": "http" },
          "http": { "method": "DELETE", "url": "https://api.retellai.com/delete-knowledge-base/{{knowledge_base_id}}" },
          "docs": "Delete a knowledge base."
        }
      ]
    },
    {
      "info": { "name": "Concurrency", "type": "folder" },
      "items": [
        {
          "info": { "name": "Get current and maximum call concurrency.", "type": "http" },
          "http": { "method": "GET", "url": "https://api.retellai.com/get-concurrency" },
          "docs": "Get current and maximum call concurrency for the organization."
        }
      ]
    }
  ]
}