> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.voicebip.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.voicebip.com/_mcp/server.

# WebRTC signaling for shareable agent links

POST https://api.voicebip.com/v1/public/try/{agent_id}/offer
Content-Type: application/json

Submit a WebRTC SDP offer to start a browser-based call with a shareable
agent. No authentication required. The agent must have `shareable: true`.
Rate limited to 10 concurrent calls and 50 calls per day per agent.

Reference: https://docs.voicebip.com/api/public/try-agent-offer

## Servers

- `https://api.voicebip.com` (Production, default)
- `https://sandbox.voicebip.com` (Sandbox)

## Request

### Path parameters

- `agent_id` (string, required) — Agent ID (must have shareable enabled)

### Body (application/json)

This endpoint expects an object.

- `sdp` (string, required) — WebRTC SDP offer from the browser (RFC 8829)
- `agent_id` (string, required) — Agent ID to route this call to
- `workspace_id` (string, required) — Workspace ID that owns the agent; used for billing enforcement
- `type` ("offer", optional) — SDP type — must be "offer"
- `source` (string, optional) — Call source hint passed through to the call.initiated webhook payload (e.g. "browser_test", "shareable")

## Response

### 200

WebRTC SDP answer

- `sdp` (string, required) — WebRTC SDP answer from the server (RFC 8829)
- `type` ("answer", required) — SDP type — always "answer"
- `call_id` (string, required) — Call ID for tracking this browser call; use in call.* webhook events

## Errors

### 400 Public TRY Agent Offer Request Bad Request Error

Missing or invalid request fields (`sdp`, `agent_id`, or `workspace_id` absent; `type` not \"offer\")

- `error_code` (enum, required)
  - Allowed values: `NOT_FOUND`, `ALREADY_EXISTS`, `INVALID_ARGUMENT`, `PERMISSION_DENIED`, `UNAUTHENTICATED`, `RATE_LIMITED`, `INTERNAL`, `UNAVAILABLE`, `QUOTA_EXCEEDED`, `NUMBER_UNAVAILABLE`, `CALL_FAILED`, `MESSAGE_FAILED`, `WEBHOOK_FAILED`, `AI_PROVIDER_ERROR`, `CALL_WINDOW_RESTRICTED`, `INVALID_REQUEST`, `INVALID_PLAN`, `NO_OP`, `NO_ACTIVE_SUBSCRIPTION`, `WORKSPACE_NOT_FOUND`, `TIER_SWITCH_UNSUPPORTED`, `INSUFFICIENT_BALANCE`, `WORKSPACE_BLOCKED`, `TIER_SWITCH_TOO_FREQUENT`, `CHANNEL_MISMATCH`, `OPT_OUT_ENFORCED`, `UPSTREAM_ERROR`, `REQUEST_BODY_TOO_LARGE`, `INVALID_BODY`, `AI_ERROR`, `ADMIN_DISABLED`, `STORE_UNAVAILABLE`, `ADMIN_DB_UNAVAILABLE`, `MISSING_ACTOR`, `ACTOR_TOO_LONG`, `MISSING_FIELD`, `INVALID_JSON`, `INVALID_AMOUNT`, `INVALID_INCLUDED_QTY`, `INVALID_CURRENCY`, `INVALID_PROFILE`, `INVALID_RESOURCE`, `INVALID_UNIT`, `INVALID_TIER`, `INVALID_EFFECTIVE_FROM`, `NOTES_TOO_LONG`, `INVALID_LIMIT`, `LIST_FAILED`, `UPSERT_FAILED`, `WORKSPACE_OVERRIDE_DISABLED`, `WORKSPACE_OVERRIDE_UNCONFIRMED`, `MISSING_WORKSPACE_HEADER`, `INVALID_PASSWORD`, `INVALID_EMAIL`, `INVALID_CREDENTIALS`, `EMAIL_EXISTS`, `EMAIL_NOT_VERIFIED`, `WEAK_PASSWORD`, `MISSING_COMPANY`, `MISSING_TOKEN`, `INVALID_TOKEN`, `TOO_MANY_ATTEMPTS`
- `message` (string, required)
- `request_id` (string, required)
- `documentation_url` (string, optional)

### 402 Public TRY Agent Offer Request Payment Required Error

Workspace billing blocked (`WORKSPACE_BLOCKED` — balance reached zero)

- `error_code` (enum, required)
  - Allowed values: `NOT_FOUND`, `ALREADY_EXISTS`, `INVALID_ARGUMENT`, `PERMISSION_DENIED`, `UNAUTHENTICATED`, `RATE_LIMITED`, `INTERNAL`, `UNAVAILABLE`, `QUOTA_EXCEEDED`, `NUMBER_UNAVAILABLE`, `CALL_FAILED`, `MESSAGE_FAILED`, `WEBHOOK_FAILED`, `AI_PROVIDER_ERROR`, `CALL_WINDOW_RESTRICTED`, `INVALID_REQUEST`, `INVALID_PLAN`, `NO_OP`, `NO_ACTIVE_SUBSCRIPTION`, `WORKSPACE_NOT_FOUND`, `TIER_SWITCH_UNSUPPORTED`, `INSUFFICIENT_BALANCE`, `WORKSPACE_BLOCKED`, `TIER_SWITCH_TOO_FREQUENT`, `CHANNEL_MISMATCH`, `OPT_OUT_ENFORCED`, `UPSTREAM_ERROR`, `REQUEST_BODY_TOO_LARGE`, `INVALID_BODY`, `AI_ERROR`, `ADMIN_DISABLED`, `STORE_UNAVAILABLE`, `ADMIN_DB_UNAVAILABLE`, `MISSING_ACTOR`, `ACTOR_TOO_LONG`, `MISSING_FIELD`, `INVALID_JSON`, `INVALID_AMOUNT`, `INVALID_INCLUDED_QTY`, `INVALID_CURRENCY`, `INVALID_PROFILE`, `INVALID_RESOURCE`, `INVALID_UNIT`, `INVALID_TIER`, `INVALID_EFFECTIVE_FROM`, `NOTES_TOO_LONG`, `INVALID_LIMIT`, `LIST_FAILED`, `UPSERT_FAILED`, `WORKSPACE_OVERRIDE_DISABLED`, `WORKSPACE_OVERRIDE_UNCONFIRMED`, `MISSING_WORKSPACE_HEADER`, `INVALID_PASSWORD`, `INVALID_EMAIL`, `INVALID_CREDENTIALS`, `EMAIL_EXISTS`, `EMAIL_NOT_VERIFIED`, `WEAK_PASSWORD`, `MISSING_COMPANY`, `MISSING_TOKEN`, `INVALID_TOKEN`, `TOO_MANY_ATTEMPTS`
- `message` (string, required)
- `request_id` (string, required)
- `documentation_url` (string, optional)

### 404 Public TRY Agent Offer Request Not Found Error

Not found

- `error_code` (enum, required)
  - Allowed values: `NOT_FOUND`, `ALREADY_EXISTS`, `INVALID_ARGUMENT`, `PERMISSION_DENIED`, `UNAUTHENTICATED`, `RATE_LIMITED`, `INTERNAL`, `UNAVAILABLE`, `QUOTA_EXCEEDED`, `NUMBER_UNAVAILABLE`, `CALL_FAILED`, `MESSAGE_FAILED`, `WEBHOOK_FAILED`, `AI_PROVIDER_ERROR`, `CALL_WINDOW_RESTRICTED`, `INVALID_REQUEST`, `INVALID_PLAN`, `NO_OP`, `NO_ACTIVE_SUBSCRIPTION`, `WORKSPACE_NOT_FOUND`, `TIER_SWITCH_UNSUPPORTED`, `INSUFFICIENT_BALANCE`, `WORKSPACE_BLOCKED`, `TIER_SWITCH_TOO_FREQUENT`, `CHANNEL_MISMATCH`, `OPT_OUT_ENFORCED`, `UPSTREAM_ERROR`, `REQUEST_BODY_TOO_LARGE`, `INVALID_BODY`, `AI_ERROR`, `ADMIN_DISABLED`, `STORE_UNAVAILABLE`, `ADMIN_DB_UNAVAILABLE`, `MISSING_ACTOR`, `ACTOR_TOO_LONG`, `MISSING_FIELD`, `INVALID_JSON`, `INVALID_AMOUNT`, `INVALID_INCLUDED_QTY`, `INVALID_CURRENCY`, `INVALID_PROFILE`, `INVALID_RESOURCE`, `INVALID_UNIT`, `INVALID_TIER`, `INVALID_EFFECTIVE_FROM`, `NOTES_TOO_LONG`, `INVALID_LIMIT`, `LIST_FAILED`, `UPSERT_FAILED`, `WORKSPACE_OVERRIDE_DISABLED`, `WORKSPACE_OVERRIDE_UNCONFIRMED`, `MISSING_WORKSPACE_HEADER`, `INVALID_PASSWORD`, `INVALID_EMAIL`, `INVALID_CREDENTIALS`, `EMAIL_EXISTS`, `EMAIL_NOT_VERIFIED`, `WEAK_PASSWORD`, `MISSING_COMPANY`, `MISSING_TOKEN`, `INVALID_TOKEN`, `TOO_MANY_ATTEMPTS`
- `message` (string, required)
- `request_id` (string, required)
- `documentation_url` (string, optional)

### 429 Public TRY Agent Offer Request Too Many Requests Error

Rate limited

- `error_code` (enum, required)
  - Allowed values: `NOT_FOUND`, `ALREADY_EXISTS`, `INVALID_ARGUMENT`, `PERMISSION_DENIED`, `UNAUTHENTICATED`, `RATE_LIMITED`, `INTERNAL`, `UNAVAILABLE`, `QUOTA_EXCEEDED`, `NUMBER_UNAVAILABLE`, `CALL_FAILED`, `MESSAGE_FAILED`, `WEBHOOK_FAILED`, `AI_PROVIDER_ERROR`, `CALL_WINDOW_RESTRICTED`, `INVALID_REQUEST`, `INVALID_PLAN`, `NO_OP`, `NO_ACTIVE_SUBSCRIPTION`, `WORKSPACE_NOT_FOUND`, `TIER_SWITCH_UNSUPPORTED`, `INSUFFICIENT_BALANCE`, `WORKSPACE_BLOCKED`, `TIER_SWITCH_TOO_FREQUENT`, `CHANNEL_MISMATCH`, `OPT_OUT_ENFORCED`, `UPSTREAM_ERROR`, `REQUEST_BODY_TOO_LARGE`, `INVALID_BODY`, `AI_ERROR`, `ADMIN_DISABLED`, `STORE_UNAVAILABLE`, `ADMIN_DB_UNAVAILABLE`, `MISSING_ACTOR`, `ACTOR_TOO_LONG`, `MISSING_FIELD`, `INVALID_JSON`, `INVALID_AMOUNT`, `INVALID_INCLUDED_QTY`, `INVALID_CURRENCY`, `INVALID_PROFILE`, `INVALID_RESOURCE`, `INVALID_UNIT`, `INVALID_TIER`, `INVALID_EFFECTIVE_FROM`, `NOTES_TOO_LONG`, `INVALID_LIMIT`, `LIST_FAILED`, `UPSERT_FAILED`, `WORKSPACE_OVERRIDE_DISABLED`, `WORKSPACE_OVERRIDE_UNCONFIRMED`, `MISSING_WORKSPACE_HEADER`, `INVALID_PASSWORD`, `INVALID_EMAIL`, `INVALID_CREDENTIALS`, `EMAIL_EXISTS`, `EMAIL_NOT_VERIFIED`, `WEAK_PASSWORD`, `MISSING_COMPANY`, `MISSING_TOKEN`, `INVALID_TOKEN`, `TOO_MANY_ATTEMPTS`
- `message` (string, required)
- `request_id` (string, required)
- `documentation_url` (string, optional)

## Examples

**Request**

```json
{
  "sdp": "sdp",
  "agent_id": "agt_WX1Y_abcdef123456",
  "workspace_id": "ws_abc123"
}
```

**Response**

```json
{
  "sdp": "sdp",
  "type": "answer",
  "call_id": "call_abc123"
}
```

**SDK Code**

```python
import requests

url = "https://api.voicebip.com/v1/public/try/agent_id/offer"

payload = {
    "sdp": "sdp",
    "agent_id": "agt_WX1Y_abcdef123456",
    "workspace_id": "ws_abc123"
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.voicebip.com/v1/public/try/agent_id/offer';
const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: '{"sdp":"sdp","agent_id":"agt_WX1Y_abcdef123456","workspace_id":"ws_abc123"}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.voicebip.com/v1/public/try/agent_id/offer"

	payload := strings.NewReader("{\n  \"sdp\": \"sdp\",\n  \"agent_id\": \"agt_WX1Y_abcdef123456\",\n  \"workspace_id\": \"ws_abc123\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.voicebip.com/v1/public/try/agent_id/offer")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"sdp\": \"sdp\",\n  \"agent_id\": \"agt_WX1Y_abcdef123456\",\n  \"workspace_id\": \"ws_abc123\"\n}"

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.voicebip.com/v1/public/try/agent_id/offer")
  .header("Content-Type", "application/json")
  .body("{\n  \"sdp\": \"sdp\",\n  \"agent_id\": \"agt_WX1Y_abcdef123456\",\n  \"workspace_id\": \"ws_abc123\"\n}")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.voicebip.com/v1/public/try/agent_id/offer', [
  'body' => '{
  "sdp": "sdp",
  "agent_id": "agt_WX1Y_abcdef123456",
  "workspace_id": "ws_abc123"
}',
  'headers' => [
    'Content-Type' => 'application/json',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.voicebip.com/v1/public/try/agent_id/offer");
var request = new RestRequest(Method.POST);
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"sdp\": \"sdp\",\n  \"agent_id\": \"agt_WX1Y_abcdef123456\",\n  \"workspace_id\": \"ws_abc123\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Content-Type": "application/json"]
let parameters = [
  "sdp": "sdp",
  "agent_id": "agt_WX1Y_abcdef123456",
  "workspace_id": "ws_abc123"
] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://api.voicebip.com/v1/public/try/agent_id/offer")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```