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

# Compare two audits

> What actually changed: how many issues were resolved, how many are new. Issues are matched by page and type, since each audit writes its own rows.



## OpenAPI

````yaml https://api.surnex.io/docs/openapi.json get /v1/projects/{projectId}/audits/compare
openapi: 3.1.0
info:
  title: Surnex API
  version: 1.0.0
  description: >-
    The SEO platform's API.


    **The API is the product.** The dashboard is one client and the MCP server
    at `/mcp` is another. If a number needs deriving, a service derives it —
    never a React component, or the two clients drift.


    **Two kinds of auth.** The dashboard sends a Supabase access token as a
    Bearer JWT. MCP agents send `X-API-Key`, and the organization is resolved
    from the key.


    **Two data modes.** SERP results and Google Trends are fetched live on
    request. Everything else is written by the worker and read from Postgres, so
    a freshly-created project returns empty until its jobs complete.
servers:
  - url: https://api.surnex.io
    description: Surnex API
security: []
paths:
  /v1/projects/{projectId}/audits/compare:
    get:
      tags:
        - audits
      summary: Compare two audits
      description: >-
        What actually changed: how many issues were resolved, how many are new.
        Issues are matched by page and type, since each audit writes its own
        rows.
      parameters:
        - schema:
            type: string
            format: uuid
          required: true
          name: projectId
          in: path
        - schema:
            type: string
            format: uuid
          required: true
          name: base
          in: query
        - schema:
            type: string
            format: uuid
          required: true
          name: compared
          in: query
      responses:
        '200':
          description: The comparison
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    enum:
                      - true
                  data:
                    type: object
                    nullable: true
                    properties:
                      base:
                        type: object
                        properties:
                          id:
                            type: string
                            format: uuid
                          target_url:
                            type: string
                          status:
                            type: string
                            enum:
                              - pending
                              - crawling
                              - processing
                              - completed
                              - failed
                          audit_score:
                            type: number
                            nullable: true
                          pages_crawled:
                            type: integer
                          max_pages:
                            type: integer
                          issues_found:
                            type: integer
                          errors_count:
                            type: integer
                          warnings_count:
                            type: integer
                          notices_count:
                            type: integer
                          error_message:
                            type: string
                            nullable: true
                          started_at:
                            type: string
                            nullable: true
                            format: date-time
                          completed_at:
                            type: string
                            nullable: true
                            format: date-time
                          created_at:
                            type: string
                            format: date-time
                        required:
                          - id
                          - target_url
                          - status
                          - audit_score
                          - pages_crawled
                          - max_pages
                          - issues_found
                          - errors_count
                          - warnings_count
                          - notices_count
                          - error_message
                          - started_at
                          - completed_at
                          - created_at
                      compared:
                        type: object
                        properties:
                          id:
                            type: string
                            format: uuid
                          target_url:
                            type: string
                          status:
                            type: string
                            enum:
                              - pending
                              - crawling
                              - processing
                              - completed
                              - failed
                          audit_score:
                            type: number
                            nullable: true
                          pages_crawled:
                            type: integer
                          max_pages:
                            type: integer
                          issues_found:
                            type: integer
                          errors_count:
                            type: integer
                          warnings_count:
                            type: integer
                          notices_count:
                            type: integer
                          error_message:
                            type: string
                            nullable: true
                          started_at:
                            type: string
                            nullable: true
                            format: date-time
                          completed_at:
                            type: string
                            nullable: true
                            format: date-time
                          created_at:
                            type: string
                            format: date-time
                        required:
                          - id
                          - target_url
                          - status
                          - audit_score
                          - pages_crawled
                          - max_pages
                          - issues_found
                          - errors_count
                          - warnings_count
                          - notices_count
                          - error_message
                          - started_at
                          - completed_at
                          - created_at
                      score_delta:
                        type: number
                        nullable: true
                      resolved_issues:
                        type: integer
                      new_issues:
                        type: integer
                      unchanged_issues:
                        type: integer
                      category_breakdown:
                        type: array
                        items:
                          type: object
                          properties:
                            category:
                              type: string
                            base_count:
                              type: integer
                            compared_count:
                              type: integer
                            delta:
                              type: integer
                          required:
                            - category
                            - base_count
                            - compared_count
                            - delta
                    required:
                      - base
                      - compared
                      - score_delta
                      - resolved_issues
                      - new_issues
                      - unchanged_issues
                      - category_breakdown
                required:
                  - success
                  - data

````

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