> ## Documentation Index > Fetch the complete documentation index at: https://www.ravion.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Get environment module graph > Returns the module dependency graph for an environment: module instance nodes, producer to consumer edges with the outputs each edge consumes, and version-mismatch messages. ## OpenAPI ````yaml https://api.ravion.com/openapi.yaml get /environments/{id}/module-graph openapi: 3.0.0 info: title: Ravion version: 0.0.0 servers: - url: https://api.ravion.com security: - BearerAuth: [] tags: - name: Projects - name: Environments - name: Pipelines - name: PipelineRuns - name: TerraformResources - name: TerraformExecutionSummaries - name: PipelineStepExecutions - name: AwsCloudWatch - name: PipelineVersions - name: Organizations - name: Stacks - name: StackWorkspaces - name: Auth - name: OAuth - name: User - name: Health - name: Memberships - name: ServiceAccounts - name: AwsDefaultNetworks - name: AwsAccounts - name: ApiKeys - name: ExecutionEnvironments - name: ModuleDefinitions - name: ModuleVersions - name: ModuleInstances - name: DefaultValueDefinitions - name: DefaultValues - name: CodeSources - name: Github - name: Gitlab - name: Git - name: Values - name: Deployments - name: DeploymentResources - name: InfrastructureEvents - name: WebSocket - name: Describe paths: /environments/{id}/module-graph: get: tags: - Environments summary: Get environment module graph description: >- Returns the module dependency graph for an environment: module instance nodes, producer to consumer edges with the outputs each edge consumes, and version-mismatch messages. operationId: GetModuleGraph parameters: - in: path name: id required: true schema: type: string responses: '200': content: application/json: schema: additionalProperties: false properties: data: $ref: '#/components/schemas/ModuleGraph' required: - data type: object description: The request has succeeded. '400': content: application/json: schema: $ref: '#/components/schemas/Errors.UserFacingErrorData' description: The request is invalid or malformed. '401': content: application/json: schema: $ref: '#/components/schemas/Errors.UserFacingErrorData' description: You are not authenticated '403': content: application/json: schema: $ref: '#/components/schemas/Errors.UserFacingErrorData' description: You do not have permission to access this resource. '404': content: application/json: schema: $ref: '#/components/schemas/Errors.UserFacingErrorData' description: The server cannot find the requested resource. '500': content: application/json: schema: $ref: '#/components/schemas/Errors.UserFacingErrorData' description: Server error components: schemas: ModuleGraph: additionalProperties: false description: The module dependency graph for an environment. properties: edges: description: Producer to consumer dependency edges. items: $ref: '#/components/schemas/ModuleGraphEdge' type: array nodes: description: >- Module instance nodes, plus external nodes for cross-environment producers. items: $ref: '#/components/schemas/ModuleGraphNode' type: array required: - nodes - edges type: object Errors.UserFacingErrorData: additionalProperties: false description: |- User-facing error presentation data. This is what the API returns to the frontend after formatting ErrorData using CEL templates from the error registry. Used for both: - Error fields on domain models (e.g., PipelineRun.error) - API error response bodies (HTTP 4xx/5xx responses) properties: action: allOf: - $ref: '#/components/schemas/Errors.Action' description: Optional action to help resolve the error code: description: Full error code, e.g., "Ravion:Pipeline:NOT_FOUND" type: string description: description: Additional description with more details type: string details: description: Structured details rendered as user-facing sections. items: $ref: '#/components/schemas/Errors.UserFacingErrorDetailSection' type: array isInternal: description: >- Indicates whether this error is internal (only set when ShowInternal=true). This allows SUPERADMINs to identify internal errors while viewing full details. type: boolean message: description: Main error message (required) type: string metadata: additionalProperties: {} description: >- Error params/metadata. Stripped for internal errors unless superadmin. type: object requestId: description: Request ID for correlating errors with server logs. type: string required: - code - message type: object ModuleGraphEdge: additionalProperties: false description: >- A producer to consumer dependency edge, including the producer stack outputs the consumer reads. properties: consumedFields: description: Producer stack output keys this edge consumes. items: type: string type: array crossEnv: description: >- True when the producer lives in a different environment than the consumer. type: boolean id: description: Stable edge id. type: string messages: description: >- Messages attached to this edge (dropped outputs, producer not yet applied). items: $ref: '#/components/schemas/ModuleGraphMessage' type: array refInputId: description: The consumer reference input id that created this edge. type: string source: description: Producer module instance id (the dependency). type: string target: description: Consumer module instance id (the dependent). type: string required: - id - source - target - refInputId - consumedFields - crossEnv - messages type: object ModuleGraphNode: additionalProperties: false description: >- A module instance in the dependency graph, or an external cross-environment producer. properties: givenId: description: >- User-assigned instance identifier, unique within the environment (e.g. vpc, api, web). type: string id: description: Module instance id. type: string kind: description: >- Node kind: module for an instance in this environment, or external for a producer in another environment. type: string messages: description: >- Messages attached to this node (dangling references, new version available). items: $ref: '#/components/schemas/ModuleGraphMessage' type: array moduleType: description: Module type (the module definition type). type: string moduleVersionId: description: Selected module version id. type: string name: description: Module instance name. type: string version: description: Selected module version label. type: string required: - id - name - givenId - moduleType - version - moduleVersionId - kind - messages type: object Errors.Action: additionalProperties: false description: Action to help user resolve the error properties: label: description: Button/link label text type: string url: description: URL to navigate to for resolution type: string required: - label - url type: object Errors.UserFacingErrorDetailSection: additionalProperties: false description: Structured user-facing error detail section. properties: items: description: List of detail values for this section. items: type: string type: array object: additionalProperties: {} description: Structured detail payload for object rendering. type: object render: description: Rendering hint for clients. Valid values are list or object. type: string title: description: Detail section title shown in the UI. type: string required: - title - render type: object ModuleGraphMessage: additionalProperties: false description: >- A structured module graph message. The user-facing copy is rendered client-side from these fields so wording can change without an API deploy. properties: category: allOf: - $ref: '#/components/schemas/ModuleGraph.MessageCategory' description: The kind of message. field: description: The producer output key this message concerns, when applicable. type: string level: allOf: - $ref: '#/components/schemas/ModuleGraph.MessageLevel' description: The level of the message. producerInstanceId: description: >- The producer module instance id this message concerns, when applicable. type: string refInputId: description: >- The consumer reference input id this message concerns, when applicable. type: string required: - category - level type: object ModuleGraph.MessageCategory: description: >- The kind of module graph message. DANGLING_REF: a reference points at a module that no longer exists. OUTPUT_DROPPED: a required producer output the consumer reads is not provided by the producer's latest apply (the consumer's deploy will fail). PRODUCER_NOT_APPLIED: a dependency has not deployed yet. NEW_VERSION_AVAILABLE: a newer module version is available. enum: - DANGLING_REF - OUTPUT_DROPPED - PRODUCER_NOT_APPLIED - NEW_VERSION_AVAILABLE type: string ModuleGraph.MessageLevel: description: >- The level of a module graph message: error blocks a successful deploy, warning is a non-blocking concern, info is advisory. enum: - error - warning - info type: string securitySchemes: BearerAuth: scheme: Bearer type: http ````