> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.pinnacle.sh/v-2/api-reference/rcs-agents/get-link/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.pinnacle.sh/_mcp/server.

# Generate RCS Link

POST https://api.pinnacle.sh/rcs/link
Content-Type: application/json

Generate a link for initiating an RCS conversation with your agent.

Users can click these links to start conversations with your RCS agent directly
from websites, emails, or other applications.


Reference: https://docs.pinnacle.sh/api-reference/rcs-agents/get-link

## Authentication

- `PINNACLE-API-KEY` header (required) — API Key authentication via header

## Request

### Body (application/json)

This endpoint expects a RcsLinkRequest.

- `agentId` (string, required) — The RCS agent ID (must be prefixed with 'agent_')
- `phoneNumber` (string, optional) — Fallback phone number (E.164 format) to use if the phone number does not support RCS. If not provided, no url will be generated.
- `body` (string, optional) — Optional message body to pre-fill after the user clicks the link

## Response

### 200

Response containing the generated RCS service id and/or url. You can always create a link with the service id that is returned using the format: ``` sms://{PHONE_NUMBER}?service_id={SERVICE_ID}&body={URL_ENCODED_BODY} ```

- `serviceId` (string, required) — The service ID used for the link
- `url` (string, optional) — The generated RCS link URL. If no phone number is provided, no url will be generated.

## Errors

### 400 Bad Request Error

Validation failed. The payload has missing required fields and/or invalid types.  See [https://zod.dev/error-formatting](https://zod.dev/error-formatting) for more information.

- `description` (string, required) — Human-readable summary of validation failures.
- `errors` (ZodErrorErrors, required) — Structured dictionary of issues containing two main sections: - `errors`: Array of global validation errors not tied to specific fields - `properties`: Object mapping field names to their specific validation errors, where each field contains an `errors` array

### 401 Unauthorized Error

The request lacks valid authentication credentials or the provided credentials are invalid.  Ensure you're including a valid API key in the request headers and that your account has the necessary permissions to access this endpoint.

- `error` (string, required) — Human-readable description of the error that occurred, corresponding to the HTTP status code.

### 403 Forbidden Error

Your subscription does not include access to this feature.  This occurs when attempting to use functionality that requires a higher subscription tier. Please upgrade your subscription to access this feature.

- `error` (string, required) — Human-readable description of the error that occurred, corresponding to the HTTP status code.

### 404 Not Found Error

The requested resource could not be found.  This may occur if the identifier is incorrect, the resource has been deleted, or you don't have permission to access it.

- `error` (string, required) — Human-readable description of the error that occurred, corresponding to the HTTP status code.

### 500 Internal Server Error

An unexpected error occurred on Pinnacle's servers while processing your request.  If this error persists, please contact support with the request details.

- `error` (string, required) — Human-readable description of the error that occurred, corresponding to the HTTP status code.

### 501 Not Implemented Error

The requested functionality is not implemented on the server.  This typically indicates that the feature or endpoint you attempted to access is unavailable or not yet supported.

- `error` (string, required) — Human-readable description of the error that occurred, corresponding to the HTTP status code.

## Types

### ZodErrorErrors

Structured dictionary of issues containing two main sections: - `errors`: Array of global validation errors not tied to specific fields - `properties`: Object mapping field names to their specific validation errors, where each field contains an `errors` array

## Examples

### RCS Agent Link

**Response**

```json
{
  "serviceId": "pinnacletest_agent",
  "url": "sms://+12345678901?service_id=pinnacletest_agent&body=Hello%20from%20RCS!"
}
```

**SDK Code**

```python RCS Agent Link
import requests

url = "https://api.pinnacle.sh/rcs/link"

headers = {"PINNACLE-API-KEY": "<apiKey>"}

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

print(response.json())
```

```javascript RCS Agent Link
const url = 'https://api.pinnacle.sh/rcs/link';
const options = {method: 'POST', headers: {'PINNACLE-API-KEY': '<apiKey>'}};

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

```go RCS Agent Link
package main

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

func main() {

	url := "https://api.pinnacle.sh/rcs/link"

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

	req.Header.Add("PINNACLE-API-KEY", "<apiKey>")

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

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

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

}
```

```ruby RCS Agent Link
require 'uri'
require 'net/http'

url = URI("https://api.pinnacle.sh/rcs/link")

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

request = Net::HTTP::Post.new(url)
request["PINNACLE-API-KEY"] = '<apiKey>'

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

```java RCS Agent Link
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.pinnacle.sh/rcs/link")
  .header("PINNACLE-API-KEY", "<apiKey>")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.pinnacle.sh/rcs/link', [
  'headers' => [
    'PINNACLE-API-KEY' => '<apiKey>',
  ],
]);

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

```csharp RCS Agent Link
using RestSharp;

var client = new RestClient("https://api.pinnacle.sh/rcs/link");
var request = new RestRequest(Method.POST);
request.AddHeader("PINNACLE-API-KEY", "<apiKey>");
IRestResponse response = client.Execute(request);
```

```swift RCS Agent Link
import Foundation

let headers = ["PINNACLE-API-KEY": "<apiKey>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.pinnacle.sh/rcs/link")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers

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()
```

### RCS Link Request

**Request**

```json
{
  "agentId": "agent_XXXXXXXXXXXX",
  "phoneNumber": "+12345678901",
  "body": "Hello, I need help with my order"
}
```

**Response**

```json
{
  "serviceId": "pinnacletest_agent",
  "url": "sms://+12345678901?service_id=pinnacletest_agent&body=Hello%20from%20RCS!"
}
```

**SDK Code**

```python RCS Link Request
import requests

url = "https://api.pinnacle.sh/rcs/link"

payload = {
    "agentId": "agent_XXXXXXXXXXXX",
    "phoneNumber": "+12345678901",
    "body": "Hello, I need help with my order"
}
headers = {
    "PINNACLE-API-KEY": "<apiKey>",
    "Content-Type": "application/json"
}

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

print(response.json())
```

```javascript RCS Link Request
const url = 'https://api.pinnacle.sh/rcs/link';
const options = {
  method: 'POST',
  headers: {'PINNACLE-API-KEY': '<apiKey>', 'Content-Type': 'application/json'},
  body: '{"agentId":"agent_XXXXXXXXXXXX","phoneNumber":"+12345678901","body":"Hello, I need help with my order"}'
};

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

```go RCS Link Request
package main

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

func main() {

	url := "https://api.pinnacle.sh/rcs/link"

	payload := strings.NewReader("{\n  \"agentId\": \"agent_XXXXXXXXXXXX\",\n  \"phoneNumber\": \"+12345678901\",\n  \"body\": \"Hello, I need help with my order\"\n}")

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

	req.Header.Add("PINNACLE-API-KEY", "<apiKey>")
	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 RCS Link Request
require 'uri'
require 'net/http'

url = URI("https://api.pinnacle.sh/rcs/link")

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

request = Net::HTTP::Post.new(url)
request["PINNACLE-API-KEY"] = '<apiKey>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"agentId\": \"agent_XXXXXXXXXXXX\",\n  \"phoneNumber\": \"+12345678901\",\n  \"body\": \"Hello, I need help with my order\"\n}"

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

```java RCS Link Request
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.pinnacle.sh/rcs/link")
  .header("PINNACLE-API-KEY", "<apiKey>")
  .header("Content-Type", "application/json")
  .body("{\n  \"agentId\": \"agent_XXXXXXXXXXXX\",\n  \"phoneNumber\": \"+12345678901\",\n  \"body\": \"Hello, I need help with my order\"\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.pinnacle.sh/rcs/link', [
  'body' => '{
  "agentId": "agent_XXXXXXXXXXXX",
  "phoneNumber": "+12345678901",
  "body": "Hello, I need help with my order"
}',
  'headers' => [
    'Content-Type' => 'application/json',
    'PINNACLE-API-KEY' => '<apiKey>',
  ],
]);

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

```csharp RCS Link Request
using RestSharp;

var client = new RestClient("https://api.pinnacle.sh/rcs/link");
var request = new RestRequest(Method.POST);
request.AddHeader("PINNACLE-API-KEY", "<apiKey>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"agentId\": \"agent_XXXXXXXXXXXX\",\n  \"phoneNumber\": \"+12345678901\",\n  \"body\": \"Hello, I need help with my order\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift RCS Link Request
import Foundation

let headers = [
  "PINNACLE-API-KEY": "<apiKey>",
  "Content-Type": "application/json"
]
let parameters = [
  "agentId": "agent_XXXXXXXXXXXX",
  "phoneNumber": "+12345678901",
  "body": "Hello, I need help with my order"
] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.pinnacle.sh/rcs/link")! 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()
```

> One API for RCS, iMessage, MMS, and SMS. Build, test, and scale every channel — send your first message in minutes, not weeks.