diff --git a/package.json b/package.json
index f235cd4..3cab35e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@agentesting/agentest",
-  "version": "0.0.15",
+  "version": "0.0.16",
   "description": "Embedded agent simulation & evaluation framework for Node.js/TypeScript",
   "type": "module",
   "main": "./dist/index.cjs",
diff --git a/src/config/schema.ts b/src/config/schema.ts
index 49cd169..90ac74e 100644
--- a/src/config/schema.ts
+++ b/src/config/schema.ts
@@ -126,6 +126,7 @@ export const configSchema = z.object({
   maxTurns: z.number().int().positive().default(8),
   requestTimeoutMs: z.number().int().min(1000).max(300_000).default(30_000),
   concurrency: z.number().int().min(1).max(100).default(20),
+  debounceMs: z.number().int().min(0).max(300_000).default(0),
 
   metrics: z
     .array(
diff --git a/src/runner/runner.ts b/src/runner/runner.ts
index 60cdc78..5dc80e4 100644
--- a/src/runner/runner.ts
+++ b/src/runner/runner.ts
@@ -60,6 +60,7 @@ export class Runner {
   private config: AgentestConfig
   private reporters: Reporter[]
   private limit: ReturnType<typeof pLimit>
+  private lastScenarioStartTime = 0
 
   constructor(config: AgentestConfig, reporters: Reporter[]) {
     this.config = config
@@ -67,6 +68,16 @@ export class Runner {
     this.limit = pLimit(config.concurrency)
   }
 
+  private async debounce(): Promise<void> {
+    if (this.config.debounceMs <= 0) return
+    const elapsed = Date.now() - this.lastScenarioStartTime
+    const remaining = this.config.debounceMs - elapsed
+    if (remaining > 0) {
+      await new Promise((resolve) => setTimeout(resolve, remaining))
+    }
+    this.lastScenarioStartTime = Date.now()
+  }
+
   private async createInfrastructure() {
     const llm = await createProvider(
       this.config.provider,
@@ -105,9 +116,10 @@ export class Runner {
     // Run all scenarios in parallel (bounded by concurrency)
     const scenarioResults = await Promise.all(
       allScenarios.map((scenario) =>
-        this.limit(() =>
-          this.runScenario(scenario, simulator, evaluator, trajectoryMatcher, errorDetection),
-        ),
+        this.limit(async () => {
+          await this.debounce()
+          return this.runScenario(scenario, simulator, evaluator, trajectoryMatcher, errorDetection)
+        }),
       ),
     )
 
@@ -210,6 +222,8 @@ export class Runner {
     }
 
     for (const scenario of allScenarios) {
+      await this.debounce()
+
       // Run all agents in parallel for this scenario
       const agentResults = await Promise.all(
         agentNames.map((agentName) =>