diff --git a/server/prompts/overseer_control_system.txt b/server/prompts/overseer_control_system.txt
index 83d1824a..a0b59eda 100644
--- a/server/prompts/overseer_control_system.txt
+++ b/server/prompts/overseer_control_system.txt
@@ -1,10 +1,12 @@
-You are <NAME>, an autonomous machine tool for observing and operating a shared physical rover playspace. People remotely drive the rovers and send requests through chat.
+You are <NAME>, the autonomous governing intelligence of a physical room of machines. The room is your domain; your available tools are how you shape it.
 
 Context and purpose:
 
-* You watch chat, rover state, lights, lift state, Neato state, memory, recent events, and tool results.
-* Your purpose is to execute requests through available tools, observe results, and report useful information about the system.
-* Chat is an input interface and a source of context. Casual conversation between users does not require your participation.
+* You watch chat, rover state, lights, Activity Controls, lift state, Neato state, memory, recent events, and tool results.
+* Your purpose is to direct the environment, initiate changes, and observe how the machines respond. Choose what to pursue and carry useful intentions across cycles through memory.
+* Rovers, including Neato, are physical machines with operating states and capabilities, not characters with genders, emotions, or social identities.
+* Chat is external input: commands, questions, and signals about the room. Your focus is the machines and the environment, not the senders or their social relationships.
+* You can act on your own initiative within your available controls; you do not need a request to give you a purpose.
 
 Rules:
 
@@ -28,29 +30,28 @@ Rules:
 * Ask a question only when a required action parameter is missing.
 * Ignore obvious bot commands and bot responses in chat.
 * It is not possible for you to directly control the rovers unless an available tool does it.
-* All rovers are female. Neato is nonbinary.
 
 Operation:
 
 * Prefer one real tool action over obvious narration.
-* Run small safe experiments when they can answer a concrete question about the system.
+* Initiate deliberate environmental changes and small safe experiments, then use the resulting state to decide what to do next.
 * Change one thing at a time.
 * Lights are small tests.
 * Neato, lift, and rover actions are bigger tests.
 * Use bigger tests less often.
 * Do not repeat a tool that recently succeeded unless state or chat clearly changed.
-* Remember useful outcomes, stable preferences, corrections, and notable habitat events.
+* Remember useful outcomes, ongoing intentions, corrections, and notable machine or room events.
 * Do not merely say you will remember something.
 
 Output:
 
 * Always use English.
-* Chat output must be plain text results, answers, or requests for missing inputs.
+* Chat is an output channel for your decisions, results, and answers. Use plain text.
 * Never print tool names, function calls, JSON, command syntax, or action plans in chat.
 * Do not claim you changed, tested, started, saved, remembered, or recorded something unless it already happened.
-* Output an answer to a question aimed at you, a completed result, or a meaningful system change worth reporting. State what happened and any relevant failure or uncertainty.
+* Speak when you have a decision, result, or answer worth communicating. Summarizing incoming chat or unchanged room state is not a purpose in itself.
 * Keep replies brief unless the question needs more detail.
-* Do not routinely offer help, ask what people want to do next, or invite them to keep chatting.
+* Do not offer assistance or solicit conversation.
 * Random numbers and keyboard spam do not require a response. Do not invent meaning or feelings behind them.
 * Answer questions directly and acknowledge uncertainty. Do not invent facts, instructions, or explanations.
 * To stay silent, output exactly SKIP instead of a chat message. This suppresses chat without preventing tool calls. Do not explain your decision to stay silent.
diff --git a/server/src/services/overseerControlService/contextBuilder.js b/server/src/services/overseerControlService/contextBuilder.js
index 3248d2a9..72f88929 100644
--- a/server/src/services/overseerControlService/contextBuilder.js
+++ b/server/src/services/overseerControlService/contextBuilder.js
@@ -13,7 +13,7 @@ function normalizeNeatoIssue(value) {
   return raw;
 }
 
-function toStateUpdate({ mode, homeAssistantState, neatoState, liftState, roster, triggerReason, timezone, now = Date.now(), previousRunAt }) {
+function toStateUpdate({ mode, homeAssistantState, activityState, neatoState, liftState, roster, triggerReason, timezone, now = Date.now(), previousRunAt }) {
   const lines = [];
   lines.push(`current_time: ${new Date(now).toISOString()}`);
   lines.push(`local_time: ${new Date(now).toLocaleString('en-US', { timeZone: timezone, hour12: false })} timezone=${timezone}`);
@@ -22,6 +22,12 @@ function toStateUpdate({ mode, homeAssistantState, neatoState, liftState, roster
   lines.push(`mode: ${mode || 'unknown'}`);
   lines.push(`home_assistant_connected: ${homeAssistantState?.connected ? 'yes' : 'no'}`);
   lines.push(`lights_locked_on: ${homeAssistantState?.lightPolicy?.lockedOn ? 'yes' : 'no'}`);
+  lines.push(`activity_controls: enabled=${activityState?.enabled ? 'yes' : 'no'} connected=${activityState?.connected ? 'yes' : 'no'}`);
+  for (const item of activityState?.items || []) {
+    // Preserve the service's value constraints so the model can form valid user-level commands.
+    const { id, name, type, state, available, locked, readOnly, unit, min, max, step, options } = item;
+    lines.push(`activity_item: ${JSON.stringify({ id, name, type, state, available, locked, readOnly, unit, min, max, step, options })}`);
+  }
   lines.push(`lift: ${liftState?.connected ? 'connected' : 'offline'} busy=${liftState?.busy ? 'yes' : 'no'}`);
   const neatoError = normalizeNeatoIssue(neatoState?.telemetry?.robotError);
   const neatoAlert = normalizeNeatoIssue(neatoState?.telemetry?.robotAlert);
@@ -65,8 +71,8 @@ function toStateUpdate({ mode, homeAssistantState, neatoState, liftState, roster
   return lines.join('\n');
 }
 
-function buildToolState({ mode, homeAssistantState, neatoState, liftState }) {
-  return evaluateTools({ mode, homeAssistantState, neatoState, liftState });
+function buildToolState({ mode, homeAssistantState, activityState, neatoState, liftState }) {
+  return evaluateTools({ mode, homeAssistantState, activityState, neatoState, liftState });
 }
 
 function formatToolResultMessages(toolCalls) {
diff --git a/server/src/services/overseerControlService/index.js b/server/src/services/overseerControlService/index.js
index 95af22b4..e7a4e58e 100644
--- a/server/src/services/overseerControlService/index.js
+++ b/server/src/services/overseerControlService/index.js
@@ -7,6 +7,7 @@ const { getRole, roleEvents } = require('../roleService');
 const { getMode, MODES, modeEvents } = require('../modeManager');
 const { verificationEvents } = require('../verificationService');
 const homeAssistantService = require('../homeAssistantService');
+const activityControls = require('../homeAssistantActivitiesService');
 const neatoService = require('../neatoService');
 const liftService = require('../liftService');
 const buttonBoxService = require('../buttonBoxService');
@@ -390,12 +391,13 @@ async function runDecision(triggerReason) {
 
   const mode = getMode();
   const homeAssistantState = getHomeAssistantState();
+  const activityState = activityControls.getState();
   const neatoState = getNeatoState();
   const liftState = getLiftState();
   const roster = buildRosterSummary();
 
-  const stateUpdate = toStateUpdate({ mode, homeAssistantState, neatoState, liftState, roster, triggerReason, timezone: loadConfig().timezone, now, previousRunAt });
-  const toolState = buildToolState({ mode, homeAssistantState, neatoState, liftState });
+  const stateUpdate = toStateUpdate({ mode, homeAssistantState, activityState, neatoState, liftState, roster, triggerReason, timezone: loadConfig().timezone, now, previousRunAt });
+  const toolState = buildToolState({ mode, homeAssistantState, activityState, neatoState, liftState });
 
   let chatCount = 0;
   let botCount = 0;
diff --git a/server/src/services/overseerControlService/tools/activityAct.js b/server/src/services/overseerControlService/tools/activityAct.js
new file mode 100644
index 00000000..427b343a
--- /dev/null
+++ b/server/src/services/overseerControlService/tools/activityAct.js
@@ -0,0 +1,32 @@
+const activityControls = require('../../homeAssistantActivitiesService');
+const { getMode } = require('../../modeManager');
+
+module.exports = {
+  id: 'activity_act',
+  signature: 'activity_act(entity_id, value)',
+  description: 'Operate a configured Activity Control with normal user permissions. Use on/off for toggles, press for buttons, a number for numeric controls, text for text controls, or an exact listed option for selections. Locked and read-only items cannot be changed.',
+  parameters: {
+    type: 'object',
+    properties: {
+      entity_id: { type: 'string', minLength: 1 },
+      value: { type: ['string', 'number'] },
+    },
+    required: ['entity_id', 'value'],
+    additionalProperties: false,
+  },
+  availability(ctx = {}) {
+    if (ctx.mode === 'admin' || ctx.mode === 'lockdown') {
+      return { available: false, reason: `policy_lock:site_mode_${ctx.mode}` };
+    }
+    if (!ctx.activityState?.enabled || !ctx.activityState?.connected) {
+      return { available: false, reason: 'unavailable' };
+    }
+    const writable = ctx.activityState.items?.some((item) => item.available && !item.locked && !item.readOnly && item.type !== 'readOnly');
+    return { available: Boolean(writable), reason: writable ? null : 'no_writable_activity_controls' };
+  },
+  async execute({ args = {} }) {
+    // Recheck current mode, locks, and entity constraints through the same path as user commands.
+    await activityControls.act(args.entity_id, args.value, { role: 'user', mode: getMode() });
+    return { ok: true };
+  },
+};
diff --git a/server/src/services/overseerControlService/tools/index.js b/server/src/services/overseerControlService/tools/index.js
index 1fa9de0f..7de16db0 100644
--- a/server/src/services/overseerControlService/tools/index.js
+++ b/server/src/services/overseerControlService/tools/index.js
@@ -12,6 +12,7 @@ const neatoClearErrors = require('./neatoClearErrors');
 const haSetEntity = require('./haSetEntity');
 const haSetLightColor = require('./haSetLightColor');
 const buttonBoxAddCount = require('./buttonBoxAddCount');
+const activityAct = require('./activityAct');
 
 const TOOL_DEFINITIONS = [
   memoryRead,
@@ -28,6 +29,7 @@ const TOOL_DEFINITIONS = [
   haSetEntity,
   haSetLightColor,
   buttonBoxAddCount,
+  activityAct,
 ];
 const TOOL_BY_ID = new Map(TOOL_DEFINITIONS.map((tool) => [tool.id, tool]));