Update step version

Use this request to update a step version. You can change the subject line, message, signature settings, and open tracking settings. This endpoint supports partial updates.

Only campaigns with a status of DRAFT or EDITED can be updated. To change the campaign status to EDITED use the /make_editable endpoint.

Request

Endpoint

PATCH https://api.woodpecker.co/rest/v2/campaigns/{campaign_id}/steps/{step_id}/versions/{version_id}

Headers

x-api-key: {YOUR_API_KEY}
Content-type: application/json

For details on how to authenticate your requests, please see the authentication guide.

Body

The request body is a simplified version of the campaign body object. You can update each parameter individually without impacting others, as the API supports partial updates. You can fetch the step_id and version_id using the GET /campaigns structure endpoint.

{
  "subject": "New subject line",
  "message": "Engaging message",
  "signature": "SENDER",
  "track_opens": true
}

Body schema

The versions object defines the email content, open tracking, and signature settings. Each of these can be configured individually, as the endpoint supports partial updates.

Field	Type	Description
subject	string/null	Email subject line. This field is required if the version is part of the first EMAIL step in the sequence. If the step is not the first EMAIL step and the subject field is null, the message will be sent as a follow-up in the same thread. Supports snippets like {{FIRST_NAME}} and spintax
message	string	Email body content in HTML format. Supports snippets like {{FIRST_NAME}} and spintax
signature	string	Whether to use the sender's email account signature. The available options are: SENDER or NO_SIGNATURE
track_opens	boolean	Whether to track email opens for this email version

Request sample

Update step version

cURL

curl --request PATCH \
  --url "https://api.woodpecker.co/rest/v2/campaigns/{campaign_id}/steps/{step_id}/versions/{version_id}" \
  --header "x-api-key: {YOUR_API_KEY}" \
  --header "Content-Type: application/json" \
  --data '{
    "message": "Engaging message"
  }'

Java

import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.URI;

public class WoodpeckerApiClient {
  public static void updateStepVersionMessage(String apiKey, String campaignId, String stepId, String versionId, String message) throws Exception {
    String url = "https://api.woodpecker.co/rest/v2/campaigns/" + campaignId + "/steps/" + stepId + "/versions/" + versionId;
    String jsonBody = "{\"message\": \"" + message + "\"}";
    
    HttpClient client = HttpClient.newHttpClient();
    HttpRequest request = HttpRequest.newBuilder()
      .uri(URI.create(url))
      .method("PATCH", HttpRequest.BodyPublishers.ofString(jsonBody))
      .header("x-api-key", apiKey)
      .header("Content-Type", "application/json")
      .build();

    HttpResponse<String> response = client.send(request, 
      HttpResponse.BodyHandlers.ofString());
        
    System.out.println("Response status: " + response.statusCode());
    System.out.println("Response body: " + response.body());
  }
}

Node.js

const axios = require("axios");

async function updateStepVersionMessage(apiKey, campaignId, stepId, versionId, message) {
  try {
    const url = `https://api.woodpecker.co/rest/v2/campaigns/${campaignId}/steps/${stepId}/versions/${versionId}`;
    const response = await axios({
      method: "patch",
      url: url,
      headers: {
        "x-api-key": apiKey,
        "Content-Type": "application/json",
      },
      data: {
        message: message,
      },
    });

    console.log("Response status:", response.status);
    console.log("Response data:", response.data);
    return response.data;
  } catch (error) {
    console.error("Error:", error.response ? error.response.data : error.message);
    throw error;
  }
}

module.exports = { updateStepVersionMessage };

Response

Response examples

200

The step version has been updated.

{
  "id": "2a72ca821042bb4baf6f815b8427772a1a13969164c6bcfcab9c0c085994edf9",
  "version": "A",
  "subject": "New subject line",
  "message": "Engaging message",
  "signature": "SENDER",
  "track_opens": false
}

Body schema

Field	Type	Description
id	string	Unique ID of the version
version	string	Indicator of A/B version of the updated version
subject	string/null	Current subject line
message	string	Current message
signature	string	Signature setting. The available options are: SENDER or NO_SIGNATURE
track_opens	boolean	Whether to track email opens for this email version

400

Invalid request or malformed syntax. Please review the request

{
  "code": "INPUT_DATA_VALIDATION_FAILURE",
  "message": "Input data validation failure",
  "details": null
}

Body schema

Field	Type	Description
code	string	Error code
message	string	Descriptive error message
details	string/null	Additional information. Currently always null

401

An issue with authorization. Please review the authorization guide

{
  "title": "Unauthorized",
  "status": 401,
  "detail": "Invalid api key",
  "timestamp": "2025-03-05 17:57:00"
}

Body schema

Field	Type	Description
title	string	A short title describing the error
status	integer	The HTTP status code
detail	string	A detailed message explaining the error
timestamp	string	The timestamp when the error occurred, YYYY-MM-DD HH:MM:SS UTC

404

The requested campaign, step or version doesn't exist.

{
  "code": "CAMPAIGN_NOT_EXIST" | "BRANCH_NOT_FOUND",
  "message": "Campaign not found" | "Step not found",
  "details": null
}

Body schema

Field	Type	Description
code	string	Error code
message	string	Descriptive error message
details	string/null	Additional information. Currently always null

409

Only campaigns with a status of DRAFT or EDITED can be updated. To change the campaign status to EDITED use the /make_editable endpoint.

{
  "code": "NOT_EDITABLE_STATUS",
  "message": "The campaign must be in DRAFT or EDITED status to be updated",
  "details": null
}

Body schema

Field	Type	Description
code	string	Error code
message	string	Descriptive error message
details	string/null	Additional information. Currently always null

500

An unknown error while updating the campaign. Please try again later.

{
  "type": "UNKNOWN",
  "message": "Unknown error during update step version call",
  "details": null
}