> ## Documentation Index
> Fetch the complete documentation index at: https://docs.retab.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Diff Edge Versions

Compare two immutable workflow edge versions.

<RequestExample>
  ```python Python theme={null}
  from retab import Retab

  client = Retab()

  diff = client.workflows.edges.list_diff(
      from_edge_version_id="egv_before",
      to_edge_version_id="egv_after",
  )
  print(diff)
  ```

  ```typescript TypeScript theme={null}
  import { Retab } from "@retab/node";

  const client = new Retab({ apiKey: process.env.RETAB_API_KEY });

  const diff = await client.workflows.edges.list_diff({
    fromEdgeVersionId: "egv_before",
    toEdgeVersionId: "egv_after",
  });
  console.log(diff);
  ```

  ```go Go theme={null}
  package main

  import (
  	"context"
  	"fmt"
  	"log"

  	retab "github.com/retab-dev/retab/clients/go"
  )

  func main() {
  	ctx := context.Background()

  	client, err := retab.NewClient("")
  	if err != nil {
  		log.Fatal(err)
  	}

  	diff, err := client.Workflows.Edges.ListDiff(ctx, &retab.WorkflowEdgesListDiffParams{
  		FromEdgeVersionID: "egv_before",
  		ToEdgeVersionID:   "egv_after",
  	})
  	if err != nil {
  		log.Fatal(err)
  	}
  	fmt.Println(*diff)
  }
  ```

  ```ruby Ruby theme={null}
  require 'retab'

  client = Retab::Client.new(api_key: ENV['RETAB_API_KEY'])

  diff = client.workflows.edges.list_diff(
    from_edge_version_id: 'egv_before',
    to_edge_version_id: 'egv_after',
  )
  puts diff
  ```

  ```rust Rust theme={null}
  use retab::Retab;
  use retab::resources::workflow_edges::ListDiffParams;

  #[tokio::main]
  async fn main() -> Result<(), Box<dyn std::error::Error>> {
      let client = Retab::new(std::env::var("RETAB_API_KEY")?);

      let diff = client
          .workflows()
          .edges()
          .list_diff(ListDiffParams::new("egv_before", "egv_after"))
          .await?;
      println!("{:?}", diff);
      Ok(())
  }
  ```

  ```php PHP theme={null}
  <?php
  require 'vendor/autoload.php';

  use Retab\Client;

  $client = new Client(apiKey: getenv('RETAB_API_KEY'));

  $diff = $client->workflows()->edges()->listDiff(
      fromEdgeVersionId: 'egv_before',
      toEdgeVersionId: 'egv_after',
  );
  print_r($diff);
  ```

  ```csharp C# theme={null}
  using Retab;
  using RetabClient = Retab.Retab;

  var apiKey = Environment.GetEnvironmentVariable("RETAB_API_KEY")!;
  var client = new RetabClient(apiKey);

  var diff = await client.Workflows.Edges.ListDiffAsync(new WorkflowEdgesListDiffOptions
  {
      FromEdgeVersionId = "egv_before",
      ToEdgeVersionId = "egv_after",
  });
  Console.WriteLine(diff);
  ```

  ```java Java theme={null}
  import com.retab.RetabClient;

  public final class Example {
    public static void main(String[] args) throws Exception {
      RetabClient client = new RetabClient(System.getenv("RETAB_API_KEY"));

      var diff = client.workflows().edges().listDiff("egv_before", "egv_after");
      System.out.println(diff);
    }
  }
  ```

  ```bash cURL theme={null}
  curl "https://api.retab.com/v1/workflows/edges/versions/diff?workflow_id=wf_abc123&from_edge_version_id=egv_before&to_edge_version_id=egv_after" \
    -H "Authorization: Bearer $RETAB_API_KEY"
  ```
</RequestExample>


## OpenAPI

````yaml GET /v1/workflows/edges/versions/diff
openapi: 3.1.0
info:
  title: FastAPI
  version: 0.1.0
servers:
  - url: https://api.retab.com
security: []
paths:
  /v1/workflows/edges/versions/diff:
    get:
      tags:
        - Workflows
        - Workflow Edges
      summary: Diff Edge Versions
      operationId: diff_edge_versions
      parameters:
        - in: query
          name: from_edge_version_id
          required: true
          schema:
            type: string
            title: From Edge Version Id
        - in: query
          name: to_edge_version_id
          required: true
          schema:
            type: string
            title: To Edge Version Id
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WorkflowEdgeVersionDiff'
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
      security:
        - HTTPBearer: []
components:
  schemas:
    WorkflowEdgeVersionDiff:
      properties:
        from_edge_version_id:
          type: string
          title: From Edge Version Id
        to_edge_version_id:
          type: string
          title: To Edge Version Id
        edge_id:
          type: string
          title: Edge Id
        changes:
          items:
            $ref: '#/components/schemas/WorkflowVersionFieldDiff'
          type: array
          title: Changes
          default: []
      type: object
      required:
        - edge_id
        - from_edge_version_id
        - to_edge_version_id
      title: WorkflowEdgeVersionDiff
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
          default: []
      type: object
      title: HTTPValidationError
    WorkflowVersionFieldDiff:
      properties:
        field:
          type: string
          title: Field
        from_value:
          anyOf:
            - {}
            - type: 'null'
          title: From Value
        to_value:
          anyOf:
            - {}
            - type: 'null'
          title: To Value
      type: object
      required:
        - field
      title: WorkflowVersionFieldDiff
      description: One changed field between two immutable version resources.
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
          default: null
        ctx:
          type: object
          title: Context
          default: {}
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError
  securitySchemes:
    HTTPBearer:
      type: http
      scheme: bearer

````