diff --git a/src/Netscript/RamCostGenerator.ts b/src/Netscript/RamCostGenerator.ts
index 782fd880e..6269bf0ad 100644
--- a/src/Netscript/RamCostGenerator.ts
+++ b/src/Netscript/RamCostGenerator.ts
@@ -289,6 +289,7 @@ const codingcontract = {
 // Duplicate Sleeve API
 const sleeve = {
   getNumSleeves: RamCostConstants.SleeveBase,
+  setToIdle: RamCostConstants.SleeveBase,
   setToShockRecovery: RamCostConstants.SleeveBase,
   setToSynchronize: RamCostConstants.SleeveBase,
   setToCommitCrime: RamCostConstants.SleeveBase,
diff --git a/src/NetscriptFunctions/Sleeve.ts b/src/NetscriptFunctions/Sleeve.ts
index a893d2f0b..63770ec23 100644
--- a/src/NetscriptFunctions/Sleeve.ts
+++ b/src/NetscriptFunctions/Sleeve.ts
@@ -36,6 +36,12 @@ export function NetscriptSleeve(): InternalAPI<Sleeve> {
       checkSleeveAPIAccess(ctx);
       return Player.sleeves.length;
     },
+    setToIdle: (ctx) => (_sleeveNumber) => {
+      const sleeveNumber = helpers.number(ctx, "sleeveNumber", _sleeveNumber);
+      checkSleeveAPIAccess(ctx);
+      checkSleeveNumber(ctx, sleeveNumber);
+      Player.sleeves[sleeveNumber].stopWork();
+    },
     setToShockRecovery: (ctx) => (_sleeveNumber) => {
       const sleeveNumber = helpers.number(ctx, "sleeveNumber", _sleeveNumber);
       checkSleeveAPIAccess(ctx);
diff --git a/src/ScriptEditor/NetscriptDefinitions.d.ts b/src/ScriptEditor/NetscriptDefinitions.d.ts
index a87541a4f..117ff56f4 100644
--- a/src/ScriptEditor/NetscriptDefinitions.d.ts
+++ b/src/ScriptEditor/NetscriptDefinitions.d.ts
@@ -3587,6 +3587,15 @@ export interface Sleeve {
    */
   getTask(sleeveNumber: number): SleeveTask | null;
 
+  /**
+   * Set a sleeve to idle.
+   * @remarks
+   * RAM cost: 4 GB
+   *
+   * @param sleeveNumber - Index of the sleeve to idle.
+   */
+  setToIdle(sleeveNumber: number): void;
+
   /**
    * Set a sleeve to shock recovery.
    * @remarks