diff --git a/src/analyzers/dependencyGraph.ts b/src/analyzers/dependencyGraph.ts
new file mode 100644
index 0000000..0cd9372
--- /dev/null
+++ b/src/analyzers/dependencyGraph.ts
@@ -0,0 +1,264 @@
+import { DependencyGraph, GraphNode, GraphEdge, GraphCluster, AnalysisOptions } from '../types';
+import { ParsedFile, TypeDeclaration } from '../types';
+
+export class DependencyGraphBuilder {
+  private graph: DependencyGraph;
+  private options: AnalysisOptions;
+
+  constructor(options: AnalysisOptions = {}) {
+    this.options = {
+      maxDepth: options.maxDepth ?? 10,
+      includeExternal: options.includeExternal ?? false,
+      excludedPatterns: options.excludedPatterns ?? [],
+      focusTypes: options.focusTypes
+    };
+
+    this.graph = {
+      nodes: new Map(),
+      edges: [],
+      clusters: [],
+      metadata: {
+        createdAt: new Date().toISOString(),
+        sourceDirectory: '',
+        nodeCount: 0,
+        edgeCount: 0,
+        analysisOptions: this.options
+      }
+    };
+  }
+
+  build(files: ParsedFile[], sourceDirectory: string): DependencyGraph {
+    this.graph.metadata.sourceDirectory = sourceDirectory;
+
+    for (const file of files) {
+      for (const type of file.types) {
+        this.addNode(type, file.filePath);
+      }
+    }
+
+    for (const file of files) {
+      for (const type of file.types) {
+        this.addEdges(type, file.filePath);
+      }
+    }
+
+    this.graph.metadata.nodeCount = this.graph.nodes.size;
+    this.graph.metadata.edgeCount = this.graph.edges.length;
+
+    return this.graph;
+  }
+
+  private addNode(type: TypeDeclaration, filePath: string): void {
+    const nodeId = this.getNodeId(type.name, filePath);
+
+    if (this.graph.nodes.has(nodeId)) {
+      return;
+    }
+
+    const node: GraphNode = {
+      id: nodeId,
+      label: type.name,
+      kind: type.kind,
+      filePath,
+      lineNumber: type.startLine,
+      metadata: {
+        endLine: type.endLine,
+        dependencies: type.dependencies
+      },
+      dependencies: type.dependencies
+    };
+
+    this.graph.nodes.set(nodeId, node);
+  }
+
+  private addEdges(type: TypeDeclaration, filePath: string): void {
+    const sourceId = this.getNodeId(type.name, filePath);
+
+    for (const dep of type.dependencies) {
+      const targetId = this.findNodeId(dep);
+
+      if (targetId && sourceId !== targetId) {
+        const edge: GraphEdge = {
+          source: sourceId,
+          target: targetId,
+          style: 'solid'
+        };
+
+        if (!this.edgeExists(sourceId, targetId)) {
+          this.graph.edges.push(edge);
+        }
+      }
+    }
+  }
+
+  private getNodeId(name: string, filePath: string): string {
+    return `${filePath}#${name}`;
+  }
+
+  private findNodeId(name: string): string | null {
+    for (const nodeId of this.graph.nodes.keys()) {
+      if (nodeId.endsWith(`#${name}`)) {
+        return nodeId;
+      }
+    }
+    return null;
+  }
+
+  private edgeExists(sourceId: string, targetId: string): boolean {
+    return this.graph.edges.some(
+      (edge) => edge.source === sourceId && edge.target === targetId
+    );
+  }
+
+  getNode(nodeId: string): GraphNode | undefined {
+    return this.graph.nodes.get(nodeId);
+  }
+
+  getAllNodes(): GraphNode[] {
+    return Array.from(this.graph.nodes.values());
+  }
+
+  getAllEdges(): GraphEdge[] {
+    return this.graph.edges;
+  }
+
+  getIncomingEdges(nodeId: string): GraphEdge[] {
+    return this.graph.edges.filter((edge) => edge.target === nodeId);
+  }
+
+  getOutgoingEdges(nodeId: string): GraphEdge[] {
+    return this.graph.edges.filter((edge) => edge.source === nodeId);
+  }
+
+  getNodeDepth(nodeId: string): number {
+    const node = this.graph.nodes.get(nodeId);
+    if (!node) {
+      return 0;
+    }
+
+    const outgoingEdges = this.getOutgoingEdges(nodeId);
+    if (outgoingEdges.length === 0) {
+      return 0;
+    }
+
+    let maxDepth = 0;
+    for (const edge of outgoingEdges) {
+      const depth = this.getNodeDepth(edge.target) + 1;
+      if (depth > maxDepth) {
+        maxDepth = depth;
+      }
+    }
+
+    return maxDepth;
+  }
+
+  findNodeBy(name: string): GraphNode | undefined {
+    for (const node of this.graph.nodes.values()) {
+      if (node.label === name) {
+        return node;
+      }
+    }
+    return undefined;
+  }
+
+  findNodesByKind(kind: string): GraphNode[] {
+    return Array.from(this.graph.nodes.values()).filter((node) => node.kind === kind);
+  }
+
+  getSubgraph(nodeId: string, maxDepth: number): DependencyGraph {
+    const subgraph: DependencyGraph = {
+      nodes: new Map(),
+      edges: [],
+      clusters: [],
+      metadata: {
+        ...this.graph.metadata,
+        nodeCount: 0,
+        edgeCount: 0
+      }
+    };
+
+    const visited = new Set<string>();
+    const traverse = (currentId: string, currentDepth: number): void => {
+      if (visited.has(currentId) || currentDepth > maxDepth) {
+        return;
+      }
+
+      visited.add(currentId);
+
+      const node = this.graph.nodes.get(currentId);
+      if (node) {
+        subgraph.nodes.set(currentId, node);
+
+        const outgoing = this.getOutgoingEdges(currentId);
+        for (const edge of outgoing) {
+          subgraph.edges.push(edge);
+          traverse(edge.target, currentDepth + 1);
+        }
+      }
+    };
+
+    traverse(nodeId, 0);
+
+    subgraph.metadata.nodeCount = subgraph.nodes.size;
+    subgraph.metadata.edgeCount = subgraph.edges.length;
+
+    return subgraph;
+  }
+
+  clusterByFile(): void {
+    const fileClusters = new Map<string, string[]>();
+
+    for (const nodeId of this.graph.nodes.keys()) {
+      const node = this.graph.nodes.get(nodeId);
+      if (node) {
+        const filePath = node.filePath;
+        if (!fileClusters.has(filePath)) {
+          fileClusters.set(filePath, []);
+        }
+        fileClusters.get(filePath)!.push(nodeId);
+      }
+    }
+
+    let clusterIndex = 0;
+    for (const [filePath, nodeIds] of fileClusters) {
+      const cluster: GraphCluster = {
+        id: `cluster_${clusterIndex++}`,
+        label: filePath.split('/').pop() || filePath,
+        nodeIds,
+        style: 'filled'
+      };
+
+      this.graph.clusters.push(cluster);
+    }
+  }
+
+  clusterByKind(): void {
+    const kindClusters = new Map<string, string[]>();
+
+    for (const nodeId of this.graph.nodes.keys()) {
+      const node = this.graph.nodes.get(nodeId);
+      if (node) {
+        if (!kindClusters.has(node.kind)) {
+          kindClusters.set(node.kind, []);
+        }
+        kindClusters.get(node.kind)!.push(nodeId);
+      }
+    }
+
+    let clusterIndex = 0;
+    for (const [kind, nodeIds] of kindClusters) {
+      const cluster: GraphCluster = {
+        id: `cluster_${clusterIndex++}`,
+        label: `${kind}s`,
+        nodeIds,
+        style: 'rounded'
+      };
+
+      this.graph.clusters.push(cluster);
+    }
+  }
+}
+
+export function createDependencyGraphBuilder(options?: AnalysisOptions): DependencyGraphBuilder {
+  return new DependencyGraphBuilder(options);
+}