Gradle Comparison API

openapi: 3.2.0
info:
  title: Develocity Comparison API
  description: 'The Develocity API allows programmatic interaction with various aspects of Develocity, from configuration to inspecting build data.

    '
  version: 2026.2.0
  license:
    name: Develocity License
    url: https://gradle.com/help/legal-gradle-software-license-agreement
  termsOfService: https://gradle.com/help/legal-terms-of-use
  contact:
    name: Gradle
    url: https://gradle.com
  x-logo:
    url: https://assets.gradle.com/logo/develocity-logo.svg
    altText: Develocity
servers:
- url: https://develocity.example.com
  description: Your Develocity instance.
security:
- DevelocityAccessKeyOrToken: []
tags:
- name: Comparison
  x-displayName: 'Comparison (Beta)

    '
  description: 'Endpoints for comparing two builds to identify differences in work unit inputs, dependencies, and other dimensions.

    To access these endpoints the user requires the `Access build data via the API` permission.

    '
paths:
  /api/comparison/inputs:
    description: 'Work unit input comparison between two builds.

      Always returns full detail for each work unit (including valueInputChanges, fileInputChanges, outputChanges, actions).

      The response is paginated. Optional filters (workUnitPath, cacheability, className) narrow which work units are returned.

      '
    get:
      operationId: GetComparisonInputs
      summary: Get work unit input differences between two builds.
      description: '**<mark>Beta:</mark>** Returns work unit input comparison data with full detail for each work unit.


        Each work unit includes identity, difference types, build metadata, and all change details

        (value input changes, file input changes with recursive file tree, output changes, and action changes).


        Optional filters narrow which work units are returned:

        - `workUnitPath`: filter by specific work unit path(s). For Gradle, this is the task path (e.g. `:app:compileJava`). For Maven, this is the full goal execution coordinates (e.g. `groupId:artifactId:goalName:executionId`).

        - `cacheability`: filter by cacheability status (e.g. `CACHEABLE`).

        - `className`: filter by work unit implementation class name (e.g. `org.gradle.api.tasks.compile.JavaCompile`).

        '
      tags:
      - Comparison
      parameters:
      - in: query
        name: ComparisonInputsQuery
        explode: true
        description: The query parameters for the comparison inputs.
        schema:
          title: ComparisonInputsQuery
          type: object
          required:
          - buildIdA
          - buildIdB
          properties:
            buildIdA:
              type: string
              description: Build Scan ID of build A.
            buildIdB:
              type: string
              description: Build Scan ID of build B.
            workUnitPath:
              type: array
              items:
                type: string
              description: 'Filter by specific work unit path(s). Can be repeated for multiple paths.

                For Gradle, this is the task path (e.g. `:app:compileJava`).

                For Maven, this is the full goal execution coordinates (e.g. `groupId:artifactId:goalName:executionId`).

                '
            cacheability:
              type: string
              description: 'Filter work units by cacheability status (e.g. `CACHEABLE`).

                Only returns work units where at least one build has this cacheability.

                '
            className:
              type: string
              description: 'Filter work units by implementation class name (e.g. `org.gradle.api.tasks.compile.JavaCompile`).

                Returns all work units matching this class in either build.

                '
            offset:
              type: integer
              format: int32
              default: 0
              minimum: 0
              description: The offset of the first work unit to return.
            limit:
              type: integer
              format: int32
              default: 20
              minimum: 1
              maximum: 1000
              description: The maximum number of work units to return.
      responses:
        '200':
          description: Work unit input comparison data with full detail for each work unit.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ComparisonInputsResponse'
        '400':
          $ref: '#/components/responses/BadRequestError'
        '404':
          $ref: '#/components/responses/NotFoundError'
        '500':
          $ref: '#/components/responses/UnexpectedError'
        '503':
          $ref: '#/components/responses/NotReadyError'
  /api/comparison/summary:
    description: 'A summary of differences between two builds.

      '
    get:
      operationId: GetComparisonSummary
      summary: Get a summary of differences between two builds.
      description: '**<mark>Beta:</mark>** Returns a summary of which comparison dimensions have differences between two builds.

        Both builds must use the same build tool (both Gradle or both Maven).

        '
      tags:
      - Comparison
      parameters:
      - in: query
        name: ComparisonSummaryQuery
        explode: true
        description: The query parameters for the comparison summary.
        schema:
          title: ComparisonSummaryQuery
          type: object
          required:
          - buildIdA
          - buildIdB
          properties:
            buildIdA:
              type: string
              description: Build Scan ID of build A.
            buildIdB:
              type: string
              description: Build Scan ID of build B.
      responses:
        '200':
          description: The comparison summary.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ComparisonSummary'
        '400':
          $ref: '#/components/responses/BadRequestError'
        '404':
          $ref: '#/components/responses/NotFoundError'
        '500':
          $ref: '#/components/responses/UnexpectedError'
        '503':
          $ref: '#/components/responses/NotReadyError'
components:
  responses:
    UnexpectedError:
      description: The server encountered an unexpected error.
      content:
        application/problem+json:
          schema:
            $ref: '#/components/schemas/ApiProblem'
          examples:
            UnexpectedErrorResponse:
              $ref: '#/components/examples/UnexpectedErrorApiProblemExample'
    NotReadyError:
      description: The server is not ready to handle the request.
      content:
        application/problem+json:
          schema:
            $ref: '#/components/schemas/ApiProblem'
          examples:
            IngestionNotCompletedResponse:
              $ref: '#/components/examples/IngestionNotCompletedApiProblemExample'
    BadRequestError:
      description: The request cannot be fulfilled due to a problem.
      content:
        application/problem+json:
          schema:
            $ref: '#/components/schemas/ApiProblem'
          examples:
            RequestValidationApiProblemResponse:
              $ref: '#/components/examples/RequestValidationApiProblemExample'
    NotFoundError:
      description: The referenced resource either does not exist or the permissions to know about it are missing.
      content:
        application/problem+json:
          schema:
            $ref: '#/components/schemas/ApiProblem'
          examples:
            NotFoundResponse:
              $ref: '#/components/examples/NotFoundApiProblemExample'
  schemas:
    ComparisonFileRootInfo:
      type: object
      description: Information about a file root.
      required:
      - displayPath
      properties:
        displayPath:
          type: string
          description: Human-friendly representation of the path.
        realPathA:
          type:
          - string
          - 'null'
          description: The real filesystem path in build A. Null when the root is not in build A or when the real path equals displayPath.
        realPathB:
          type:
          - string
          - 'null'
          description: The real filesystem path in build B. Null when the root is not in build B or when the real path equals displayPath.
    ComparisonFileRoot:
      type: object
      description: A root directory in a file input comparison.
      required:
      - root
      - presence
      properties:
        root:
          $ref: '#/components/schemas/ComparisonFileRootInfo'
        presence:
          $ref: '#/components/schemas/ComparisonPresence'
          description: Whether this root is in one or both builds.
        status:
          type:
          - string
          - 'null'
          description: The comparison status of this root. Only present when `presence` is `IN_BOTH`.
        children:
          type:
          - array
          - 'null'
          description: Child entries of this root. Null if the root has no children.
          items:
            $ref: '#/components/schemas/ComparisonFileChild'
    ComparisonFileChild:
      type: object
      description: A child entry in a file input comparison tree.
      required:
      - path
      - presence
      properties:
        path:
          type: string
          description: The child path relative to its parent.
        presence:
          $ref: '#/components/schemas/ComparisonPresence'
          description: Whether this child is in one or both builds.
        status:
          type:
          - string
          - 'null'
          description: The comparison status of this child. Only present when `presence` is `IN_BOTH`.
        children:
          type:
          - array
          - 'null'
          description: Children of this child. Null if this child has no children.
          items:
            $ref: '#/components/schemas/ComparisonFileChild'
    ComparisonAction:
      type: object
      description: A task action comparison.
      required:
      - hasNameChanged
      - hasImplementationChanged
      properties:
        displayNameA:
          type:
          - string
          - 'null'
          description: The action display name in build A. Null when the action is not present in build A.
        displayNameB:
          type:
          - string
          - 'null'
          description: The action display name in build B. Null when the action is not present in build B.
        hasNameChanged:
          type: boolean
          description: Whether the action name changed between builds.
        hasImplementationChanged:
          type: boolean
          description: Whether the action implementation changed between builds.
    ApiProblem:
      type: object
      description: 'Response detailing why a request was rejected.

        Adheres to the [RFC-7807](https://datatracker.ietf.org/doc/html/rfc7807) standard (colloquially known as "Problem JSON") for the response format.

        '
      required:
      - type
      - title
      - status
      properties:
        status:
          type: integer
          description: HTTP status code of the problem response.
        type:
          type: string
          description: A URN (Uniform Resource Name) identifying the type of the problem.
        title:
          type: string
          description: The underlying reason for the problem.
        detail:
          type:
          - string
          - 'null'
          description: A longer and comprehensive description of the problem. May be `null` if not available.
    GradleComparisonWorkUnitDetail:
      type: object
      description: Full Gradle work unit comparison data including task identity, difference types, build metadata, and all input/output/action changes.
      required:
      - taskPath
      - differenceTypes
      - buildA
      - buildB
      - hasImplementationChanged
      - valueInputChanges
      - fileInputChanges
      - outputChanges
      properties:
        taskPath:
          type: string
          description: The full path of the Gradle task (e.g. `:app:compileJava`).
        differenceTypes:
          type: array
          description: The categories of differences found in this work unit.
          items:
            $ref: '#/components/schemas/ComparisonDifferenceType'
        buildA:
          $ref: '#/components/schemas/ComparisonWorkUnitBrief'
        buildB:
          $ref: '#/components/schemas/ComparisonWorkUnitBrief'
        hasImplementationChanged:
          type: boolean
          description: Whether the work unit implementation class changed between builds.
        actions:
          $ref: '#/components/schemas/ComparisonActions'
          description: Task actions comparison. Always null for Maven.
        valueInputChanges:
          type: array
          description: Value input properties that differ between the builds.
          items:
            $ref: '#/components/schemas/ComparisonValueInputChange'
        fileInputChanges:
          type: array
          description: File input properties that differ between the builds.
          items:
            $ref: '#/components/schemas/ComparisonFileInputChange'
        outputChanges:
          type: array
          description: Output properties that differ between the builds.
          items:
            $ref: '#/components/schemas/ComparisonOutputChange'
    ComparisonFileInputChange:
      type: object
      description: A file input property that differs between builds.
      required:
      - name
      - presence
      properties:
        name:
          type: string
          description: The input property name.
        presence:
          $ref: '#/components/schemas/ComparisonPresence'
          description: Whether this file input property is in one or both builds.
        status:
          type:
          - string
          - 'null'
          description: The comparison status of this file input property. Only present when `presence` is `IN_BOTH`.
        normalizationA:
          $ref: '#/components/schemas/ComparisonFileNormalization'
          description: Normalization in build A. Null if the file input property is not present in build A.
        normalizationB:
          $ref: '#/components/schemas/ComparisonFileNormalization'
          description: Normalization in build B. Null if the file input property is not present in build B.
        differenceExplainer:
          type:
          - string
          - 'null'
          description: Explanation of the difference. Null if no explanation is provided.
        roots:
          type:
          - array
          - 'null'
          description: File input roots. Null when the file input property is present in one build only.
          items:
            $ref: '#/components/schemas/ComparisonFileRoot'
    ComparisonWorkUnitBrief:
      type: object
      description: Brief details about a work unit in one of the compared builds.
      required:
      - className
      - outcome
      - cacheability
      properties:
        className:
          type: string
          description: The fully qualified class name of the work unit implementation.
        cacheKey:
          type:
          - string
          - 'null'
          description: The build cache key. Null when the work unit is not cacheable or if an error occurred when computing the cache key.
        outcome:
          type: string
          description: The work unit outcome.
        cacheability:
          type: string
          description: The cacheability status of the work unit.
    ComparisonFileNormalization:
      type: object
      description: The normalization strategy for a file input property.
      required:
      - strategy
      properties:
        strategy:
          type: string
          enum:
          - IGNORED_PATH
          - NAME_ONLY
          - RELATIVE_PATH
          - ABSOLUTE_PATH
          - COMPILE_CLASSPATH
          - CLASSPATH
          description: The fingerprinting strategy.
        directorySensitivity:
          type:
          - string
          - 'null'
          enum:
          - DEFAULT
          - IGNORE
          - UNKNOWN
          description: 'How empty directories are handled. Null for strategies where it doesn''t apply (COMPILE_CLASSPATH, CLASSPATH).

            '
        lineEndingSensitivity:
          type:
          - string
          - 'null'
          enum:
          - DEFAULT
          - NORMALIZE
          - UNKNOWN
          description: 'How line endings are handled. Null for strategies where it doesn''t apply (COMPILE_CLASSPATH).

            '
    MavenComparisonWorkUnitDetail:
      type: object
      description: Full Maven work unit comparison data including goal identity, difference types, build metadata, and all input/output/action changes.
      required:
      - groupId
      - artifactId
      - goalName
      - executionId
      - projectName
      - differenceTypes
      - buildA
      - buildB
      - hasImplementationChanged
      - valueInputChanges
      - fileInputChanges
      - outputChanges
      properties:
        groupId:
          type: string
          description: The Maven groupId.
        artifactId:
          type: string
          description: The Maven artifactId.
        goalName:
          type: string
          description: The Maven goal name.
        executionId:
          type: string
          description: The execution id of the goal.
        projectName:
          type: string
          description: The name of the Maven project.
        differenceTypes:
          type: array
          description: The categories of differences found in this work unit.
          items:
            $ref: '#/components/schemas/ComparisonDifferenceType'
        buildA:
          $ref: '#/components/schemas/ComparisonWorkUnitBrief'
        buildB:
          $ref: '#/components/schemas/ComparisonWorkUnitBrief'
        hasImplementationChanged:
          type: boolean
          description: Whether the work unit implementation class changed between builds.
        actions:
          $ref: '#/components/schemas/ComparisonActions'
          description: Task actions comparison. Always null for Maven.
        valueInputChanges:
          type: array
          description: Value input properties that differ between the builds.
          items:
            $ref: '#/components/schemas/ComparisonValueInputChange'
        fileInputChanges:
          type: array
          description: File input properties that differ between the builds.
          items:
            $ref: '#/components/schemas/ComparisonFileInputChange'
        outputChanges:
          type: array
          description: Output properties that differ between the builds.
          items:
            $ref: '#/components/schemas/ComparisonOutputChange'
    BuildToolType:
      type: string
      description: The build tool type.
      enum:
      - gradle
      - maven
    ComparisonSummary:
      type: object
      description: A summary of differences between two builds.
      required:
      - buildToolType
      - differences
      properties:
        buildToolType:
          $ref: '#/components/schemas/BuildToolType'
        differences:
          $ref: '#/components/schemas/ComparisonDifferences'
    ComparisonValueInputChange:
      type: object
      description: A value input property that differs between builds.
      required:
      - name
      - presence
      properties:
        name:
          type: string
          description: The input property name.
        presence:
          $ref: '#/components/schemas/ComparisonPresence'
          description: Whether this input is in one or both builds.
    ComparisonOutputChange:
      type: object
      description: An output property that differs between builds.
      properties:
        nameA:
          type:
          - string
          - 'null'
          description: Output property name in build A. Null if not present in build A.
        nameB:
          type:
          - string
          - 'null'
          description: Output property name in build B. Null if not present in build B.
    ComparisonDifferences:
      type: object
      description: Boolean flags indicating which comparison dimensions have differences. Null when the build tool doesn't support the compared dimension.
      properties:
        workUnitInputs:
          type:
          - boolean
          - 'null'
          description: Whether there are differences in work unit inputs (task inputs for Gradle, goal inputs for Maven).
        dependencies:
          type:
          - boolean
          - 'null'
          description: Whether there are differences in dependencies.
        buildDependencies:
          type:
          - boolean
          - 'null'
          description: Whether there are differences in build dependencies.
        customValues:
          type:
          - boolean
          - 'null'
          description: Whether there are differences in custom values.
        switches:
          type:
          - boolean
          - 'null'
          description: Whether there are differences in switches.
        infrastructure:
          type:
          - boolean
          - 'null'
          description: Whether there are differences in infrastructure.
    ComparisonActions:
      type: object
      description: Comparison of task actions (Gradle only).
      required:
      - doFirstActions
      - doLastActions
      properties:
        doFirstActions:
          type: array
          items:
            $ref: '#/components/schemas/ComparisonAction'
        doLastActions:
          type: array
          items:
            $ref: '#/components/schemas/ComparisonAction'
    ComparisonDifferenceType:
      type: string
      description: The type of difference found in a work unit.
      enum:
      - IMPLEMENTATION_CLASS
      - INPUTS
      - OUTPUTS
      - ACTIONS
    ComparisonInputsResponse:
      type: object
      description: 'Work unit input comparison response with full detail for each work unit.

        Exactly one of `gradle` or `maven` is set, depending on the build tool type.

        '
      required:
      - totalCount
      - offset
      - limit
      properties:
        omissionReason:
          type:
          - string
          - 'null'
          description: When present, the work unit input comparison was omitted (e.g. incompatible build agent versions). The message explains why. When omitted, `gradle` or `maven` contains the comparison results.
        gradle:
          type:
          - array
          - 'null'
          description: Gradle work units with comparison detail. Null for Maven builds or when `omissionReason` is present.
          items:
            $ref: '#/components/schemas/GradleComparisonWorkUnitDetail'
        maven:
          type:
          - array
          - 'null'
          description: Maven work units with comparison detail. Null for Gradle builds or when `omissionReason` is present.
          items:
            $ref: '#/components/schemas/MavenComparisonWorkUnitDetail'
        totalCount:
          type: integer
          format: int32
          description: The total number of work units with differences matching the applied filters (before pagination).
        offset:
          type: integer
          format: int32
          description: The offset of the first work unit in the response.
        limit:
          type: integer
          format: int32
          description: The maximum number of work units returned.
    ComparisonPresence:
      type: string
      description: Whether a compared item is present in one or both builds.
      enum:
      - ONLY_IN_A
      - ONLY_IN_B
      - IN_BOTH
  examples:
    UnexpectedErrorApiProblemExample:
      value:
        type: urn:gradle:enterprise:api:problems:unexpected-error
        title: Encountered an internal server error.
        detail: 'The ingestion of build 9r4d13f0r3v3r failed.

          '
        status: 500
    NotFoundApiProblemExample:
      value:
        type: urn:gradle:enterprise:api:problems:not-found
        title: The requested resource is not found or the permissions to know about it are missing.
        status: 404
    IngestionNotCompletedApiProblemExample:
      value:
        type: urn:gradle:enterprise:api:problems:build-processing-incomplete
        title: Build processing is incomplete.
        detail: 'The data of build 9r4d13f0r3v3r is not yet available for viewing. Please try again later.

          '
        status: 503
    RequestValidationApiProblemExample:
      value:
        type: urn:gradle:enterprise:api:problems:validation
        title: Request validation failed.
        detail: 'Numeric instance is lower than the required minimum (minimum: 1, found: 0) (Additional info: Query parameter: maxWaitSecs).

          '
        status: 400
  securitySchemes:
    DevelocityAccessKeyOrToken:
      type: http
      scheme: bearer
      bearerFormat: Bearer <<Develocity Access Key or Token>>
      description: "All requests require a Develocity access key or token as a bearer token. \nGiven an access key of `l3an7wk3j4ze5v4mi7rvgjf2p7g44nvlswg4cpvdonjs7rzd4kmq`, the required header is `Authorization: Bearer l3an7wk3j4ze5v4mi7rvgjf2p7g44nvlswg4cpvdonjs7rzd4kmq`.\n\nPlease consult the [Develocity API User Manual](https://gradle.com/help/api-access-control) for guidance on how to provision access keys or tokens and check user permissions.\n"