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> For a complete documentation index, see https://docs.pinnacle.sh/v-2/api-reference/conversations/list-messages/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.pinnacle.sh/_mcp/server.

# List Conversation Messages

POST https://api.pinnacle.sh/conversations/{id}/messages

Retrieve a paginated and filtered list of messages for a specific conversation.

Reference: https://docs.pinnacle.sh/api-reference/conversations/list-messages

## Authentication

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

## Request

### Path parameters

- `id` (string, required) — Unique identifier of the conversation. This identifier is a string that always begins with the prefix `conv_`, for example: `conv_1234567890`.

### Query parameters

- `pageIndex` (integer, optional, default: 0) — Zero-based index for pagination.
- `pageSize` (integer, optional, default: 10) — Number of messages to return per page.
- `sortOrder` (enum, optional, default: desc) — Sort order for messages.  * `asc`: Oldest messages first * `desc`: Newest messages first (default)
  - Allowed values: `asc`, `desc`
- `direction` (enum, optional) — Filter messages by direction.  * `INBOUND`: Messages received from contacts * `OUTBOUND`: Messages sent to contacts
  - Allowed values: `INBOUND`, `OUTBOUND`
- `status` (enum, optional) — Filter messages by delivery status.
  - Allowed values: `PENDING`, `SENT`, `SEND_FAILED`, `DELIVERED`, `DELIVERY_FAILED`, `FALLBACK_SENT`, `RECEIVED`, `READ`
- `type` (enum, optional) — Filter messages by protocol type.
  - Allowed values: `SMS`, `MMS`, `RCS`
- `dateFrom` (string, optional) — Filter messages sent on or after this date (ISO 8601 format).
- `dateTo` (string, optional) — Filter messages sent on or before this date (ISO 8601 format).

## Response

### 200

Returns a paginated list of messages in the conversation.

- `messages` (list of MessageWithReactions, required) — Array of messages in the conversation.
- `hasMore` (boolean, required) — Indicates if more messages are available beyond the current page.
- `count` (integer, required) — Total number of messages in the conversation.

## 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

Conversation not found

- `error` (string, optional)

### 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.

## Types

### MessageWithReactions

Message with additional conversation-specific fields including direction and reactions.

- `content` (MessageContentType, required) — Content type of the message.
- `cost` (double, required, nullable) — Total cost charged for sending the message.  Null means the message incurred no cost or has not been charged yet.
- `deliveredAt` (string, required, nullable) — Timestamp indicating when the message was successfully delivered to the recipient.  Null indicates the message has not yet been delivered.
- `error` (string, required, nullable) — Detailed explanation of any errors that occurred while delivering the message.  Null indicates no errors.
- `id` (string, required) — Unique identifier of the message. This identifier is a string that always begins with the prefix `msg_`, for example: `msg_1234567890`.
- `method` (enum, required) — Method used to send the message.
  - Allowed values: `API`, `SDK`, `OTHER`
- `numSegments` (integer, required) — Number of segments the message was split into for delivery.
- `receiver` (string, required) — Phone number that received the message in E.164 format.
- `sender` (string, required) — Phone number or agent that sent the message.
- `sentAt` (string, required, nullable) — Timestamp indicating when the message was submitted for delivery.  Null indicates the message is still in the queue.
- `status` (enum, required) — Current status of the message.
  - Allowed values: `QUEUED`, `PENDING`, `SENT`, `SEND_FAILED`, `DELIVERED`, `DELIVERY_FAILED`, `RECEIVED`, `READ`, `FALLBACK_SENT`
- `type` (enum, required) — Delivery protocol used for sending this message.
  - Allowed values: `SMS`, `MMS`, `RCS`
- `direction` (enum, required) — Direction of the message flow.
  - Allowed values: `INBOUND`, `OUTBOUND`
- `reactions` (list of string, required) — Array of unicode emoji reactions attached to this message.  Empty array indicates no reactions have been added.

### 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

### MessageContentType

Content type of the message.

### SMSContent

SMS message containing plain text only.

- `text` (string, required) — Message content.

### MMSContent

Message with text and/or media files from a phone number.

- `mediaUrls` (list of string, required) — URLs of media files in this message.  See [supported media types](https://app.pinnacle.sh/supported-file-types?type=MMS).
- `text` (string, optional) — Text content that accompanies the media files.

## Examples

**Response**

```json
{
  "messages": [
    {
      "content": {
        "text": "Hello, how can I help you today?"
      },
      "cost": 0.0075,
      "deliveredAt": "2024-09-11T00:05:30.123Z",
      "error": null,
      "id": "msg_1234567890",
      "method": "API",
      "numSegments": 1,
      "receiver": "+16509231662",
      "sender": "+18445551234",
      "sentAt": "2024-09-11T00:05:29.434Z",
      "status": "DELIVERED",
      "type": "SMS",
      "direction": "OUTBOUND",
      "reactions": []
    },
    {
      "content": {
        "text": "I need help with my order"
      },
      "cost": null,
      "deliveredAt": "2024-09-11T00:10:16.123Z",
      "error": null,
      "id": "msg_0987654321",
      "method": "API",
      "numSegments": 1,
      "receiver": "+18445551234",
      "sender": "+16509231662",
      "sentAt": "2024-09-11T00:10:15.234Z",
      "status": "DELIVERED",
      "type": "SMS",
      "direction": "INBOUND",
      "reactions": [
        "👍"
      ]
    }
  ],
  "hasMore": true,
  "count": 42
}
```

**SDK Code**

```python Conversation Messages
import requests

url = "https://api.pinnacle.sh/conversations/id/messages"

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

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

print(response.json())
```

```javascript Conversation Messages
const url = 'https://api.pinnacle.sh/conversations/id/messages';
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 Conversation Messages
package main

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

func main() {

	url := "https://api.pinnacle.sh/conversations/id/messages"

	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 Conversation Messages
require 'uri'
require 'net/http'

url = URI("https://api.pinnacle.sh/conversations/id/messages")

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 Conversation Messages
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

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

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

$client = new \GuzzleHttp\Client();

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

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

```csharp Conversation Messages
using RestSharp;

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

```swift Conversation Messages
import Foundation

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.pinnacle.sh/conversations/id/messages")! 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()
```

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