EDA Tools MCP Server

Instructions

Implementation Reference

• src/index.ts:584-709 (handler)

  The core handler function `readOpenlaneReports` in the EDAServer class. It locates the latest OpenLane run, reads key report files (synthesis stats, timing reports, final summary), extracts PPA metrics (cell count, timing slack), determines design status, and returns a structured JSON with reports excerpts and analysis summary.
  async readOpenlaneReports(projectId: string, reportType?: string): Promise<string> { try { const project = this.projects.get(projectId); if (!project) { return JSON.stringify({ success: false, error: `Project ${projectId} not found.`, }, null, 2); } const runsDir = join(project.dir, "runs"); let latestRun = ""; try { const runs = await fs.readdir(runsDir); if (runs.length === 0) { return JSON.stringify({ success: false, error: "No OpenLane runs found. Run OpenLane flow first.", }, null, 2); } latestRun = runs.sort().reverse()[0]; } catch { return JSON.stringify({ success: false, error: "No runs directory found. Run OpenLane flow first.", }, null, 2); } const reportsDir = join(project.dir, "runs", latestRun, "reports"); const finalDir = join(project.dir, "runs", latestRun, "final"); // Simple results object const results: any = { project_id: projectId, run_id: latestRun, success: true, ppa_metrics: { power_mw: null, max_frequency_mhz: null, total_cells: null, logic_area_um2: null, timing_slack_ns: null }, design_status: { synthesis_complete: false, timing_clean: false, routing_complete: false }, reports: {} }; // Helper to safely read file const readFile = async (path: string) => { try { return await fs.readFile(path, 'utf8'); } catch { return null; } }; // Read synthesis report const synthReport = await readFile(join(reportsDir, "synthesis", "1-synthesis.stat.rpt")); if (synthReport) { results.design_status.synthesis_complete = true; results.reports.synthesis = synthReport.substring(0, 2000); const cellMatch = synthReport.match(/Number of cells:\s*(\d+)/); if (cellMatch) { results.ppa_metrics.total_cells = parseInt(cellMatch[1]); } } // Read timing report try { const routingDir = join(reportsDir, "routing"); const files = await fs.readdir(routingDir); for (const file of files) { if (file.includes('sta') || file.includes('timing')) { const timingReport = await readFile(join(routingDir, file)); if (timingReport) { results.reports.timing = timingReport.substring(0, 2000); const wnsMatch = timingReport.match(/WNS.*?(-?\d+\.?\d*)/i); if (wnsMatch) { const wns = parseFloat(wnsMatch[1]); results.ppa_metrics.timing_slack_ns = wns; results.design_status.timing_clean = wns >= 0; } break; } } } } catch { // Timing reports not available } // Read final summary if available const finalSummary = await readFile(join(finalDir, "final.summary.rpt")); if (finalSummary) { results.reports.final_summary = finalSummary.substring(0, 3000); results.design_status.routing_complete = true; } // Add analysis summary const issues = []; if (!results.design_status.synthesis_complete) issues.push("Synthesis incomplete"); if (!results.design_status.timing_clean) issues.push("Timing violations detected"); if (!results.design_status.routing_complete) issues.push("Routing incomplete"); results.summary = { status: issues.length === 0 ? "SUCCESS" : "ISSUES_FOUND", issues: issues, note: "PPA metrics and design status extracted from OpenLane reports" }; return JSON.stringify(results, null, 2); } catch (error: any) { return JSON.stringify({ success: false, error: error.message || String(error), }, null, 2); } }
• src/index.ts:842-856 (schema)

  JSON Schema defining the input parameters for the tool: required 'project_id' string and optional 'report_type' string.
  inputSchema: { type: "object", properties: { project_id: { type: "string", description: "Project ID from OpenLane run" }, report_type: { type: "string", description: "Specific report category to read (synthesis, placement, routing, final, etc.). Leave empty to read all reports.", default: "" }, }, required: ["project_id"], },
• src/index.ts:840-857 (registration)

  Tool object registration in the ListTools handler, specifying name, description, and input schema.
  name: "read_openlane_reports", description: "Read OpenLane report files for LLM analysis. Returns all reports or specific category for detailed analysis of PPA metrics, timing, routing quality, and other design results.", inputSchema: { type: "object", properties: { project_id: { type: "string", description: "Project ID from OpenLane run" }, report_type: { type: "string", description: "Specific report category to read (synthesis, placement, routing, final, etc.). Leave empty to read all reports.", default: "" }, }, required: ["project_id"], }, },
• src/index.ts:929-939 (registration)

  Switch case in CallToolRequest handler that validates arguments and delegates to edaServer.readOpenlaneReports.
  case "read_openlane_reports": { const projectId = validateRequiredString(args, "project_id", name); const reportType = getStringProperty(args, "report_type", ""); return { content: [{ type: "text", text: await edaServer.readOpenlaneReports(projectId, reportType || undefined), }], }; }