diff --git a/src/lib/bot/agent-runner.ts b/src/lib/bot/agent-runner.ts
index 1626d6734..b8b00a2a6 100644
--- a/src/lib/bot/agent-runner.ts
+++ b/src/lib/bot/agent-runner.ts
@@ -9,6 +9,7 @@ import {
   getConversationContext,
   formatConversationContextForPrompt,
 } from '@/lib/bot/conversation-context';
+import { buildPrSignature, getRequesterInfo } from '@/lib/bot/pr-signature';
 import { updateBotRequest, linkBotRequestToSession } from '@/lib/bot/request-logging';
 import spawnCloudAgentSession, {
   spawnCloudAgentInputSchema,
@@ -35,7 +36,7 @@ import { ToolLoopAgent, generateText, stepCountIs, tool } from 'ai';
 import type { StepResult, ToolSet } from 'ai';
 import { Actions, Card, CardText, LinkButton, Section } from 'chat';
 import { ThreadImpl } from 'chat';
-import type { Author, Thread } from 'chat';
+import type { Author, Message, Thread } from 'chat';
 
 export type BotAgentContinuation = {
   finalText: string;
@@ -47,6 +48,8 @@ export type BotAgentContinuation = {
 type RunBotAgentParams = {
   thread: Thread;
   message: BotAgentMessageLike;
+  /** Full chat Message for PR signature (has `raw` for platform-specific fields). */
+  rawMessage?: Message;
   platformIntegration: PlatformIntegration;
   user: User;
   botRequestId: string | undefined;
@@ -204,6 +207,24 @@ export async function runBotAgent(params: RunBotAgentParams): Promise<BotAgentCo
     (params.platformIntegration.metadata as { model_slug?: string }).model_slug ??
     DEFAULT_BOT_MODEL;
   const owner = ownerFromIntegration(params.platformIntegration);
+  const chatPlatform = params.thread.id.split(':')[0];
+
+  // Build PR signature from requester info (display name + message permalink)
+  let prSignature: string | undefined;
+  if (params.rawMessage) {
+    try {
+      const requesterInfo = await getRequesterInfo(
+        params.thread,
+        params.rawMessage,
+        params.platformIntegration
+      );
+      if (requesterInfo) {
+        prSignature = buildPrSignature(requesterInfo);
+      }
+    } catch (error) {
+      console.warn('[KiloBot] Failed to build PR signature, continuing without it:', error);
+    }
+  }
 
   const startedAt = Date.now();
   const collectedSteps: BotRequestStep[] = [];
@@ -250,7 +271,8 @@ This tool returns an acknowledgement immediately. The final Cloud Agent result w
                 provider,
                 modelSlug,
               });
-            }
+            },
+            { prSignature, chatPlatform }
           );
 
           // Persist the session link synchronously so callbacks can
diff --git a/src/lib/bot/pr-signature.ts b/src/lib/bot/pr-signature.ts
new file mode 100644
index 000000000..c80699889
--- /dev/null
+++ b/src/lib/bot/pr-signature.ts
@@ -0,0 +1,104 @@
+import { getAccessTokenFromInstallation } from '@/lib/integrations/slack-service';
+import { getSlackMessagePermalink } from '@/lib/slack-bot/slack-utils';
+import { WebClient } from '@slack/web-api';
+import type { SlackEvent } from '@chat-adapter/slack';
+import type { PlatformIntegration } from '@kilocode/db';
+import type { Thread, Message } from 'chat';
+
+type RequesterInfo = {
+  displayName: string;
+  messageLink?: string;
+  platform: string;
+};
+
+const PLATFORM_LINKS: Record<string, { label: string; url: string }> = {
+  slack: { label: 'Kilo for Slack', url: 'https://kilo.ai/features/slack-integration' },
+  discord: { label: 'Kilo for Discord', url: 'https://kilo.ai' },
+};
+
+const DEFAULT_PLATFORM_LINK = { label: 'Kilo', url: 'https://kilo.ai' };
+
+/**
+ * Build the PR signature instruction to append to the Cloud Agent prompt.
+ * Instructs the agent to include a "Built for …" line at the end of any
+ * PR/MR description it creates.
+ */
+export function buildPrSignature(requesterInfo: RequesterInfo): string {
+  const requesterPart = requesterInfo.messageLink
+    ? `[${requesterInfo.displayName}](${requesterInfo.messageLink})`
+    : requesterInfo.displayName;
+
+  const { label, url } = PLATFORM_LINKS[requesterInfo.platform] ?? DEFAULT_PLATFORM_LINK;
+
+  return `
+
+---
+**PR Signature to include in the PR description:**
+When you create a pull request or merge request, include the following signature at the end of the PR/MR description:
+
+Built for ${requesterPart} by [${label}](${url})`;
+}
+
+/**
+ * Gather requester info (display name + message link) for the PR signature.
+ * Platform-specific: uses the Slack API for permalinks, constructs Discord
+ * links from IDs, and degrades gracefully for unknown platforms.
+ */
+export async function getRequesterInfo(
+  thread: Thread,
+  message: Message,
+  platformIntegration: PlatformIntegration
+): Promise<RequesterInfo | undefined> {
+  const platform = thread.id.split(':')[0];
+  const displayName = message.author.fullName || message.author.userName || message.author.userId;
+
+  switch (platform) {
+    case 'slack':
+      return getSlackRequesterInfo(message, platformIntegration, displayName);
+    case 'discord':
+      return getDiscordRequesterInfo(message, displayName);
+    default:
+      return { displayName, platform };
+  }
+}
+
+async function getSlackRequesterInfo(
+  message: Message,
+  platformIntegration: PlatformIntegration,
+  displayName: string
+): Promise<RequesterInfo> {
+  const accessToken = getAccessTokenFromInstallation(platformIntegration);
+  if (!accessToken) {
+    return { displayName, platform: 'slack' };
+  }
+
+  const raw = (message as Message<SlackEvent>).raw;
+  const channelId =
+    typeof raw === 'object' && raw !== null && 'channel' in raw
+      ? (raw as { channel?: string }).channel
+      : undefined;
+  const messageTs = message.id; // chat SDK uses Slack ts as the message ID
+
+  if (!channelId || !messageTs) {
+    return { displayName, platform: 'slack' };
+  }
+
+  const slackClient = new WebClient(accessToken);
+  const permalink = await getSlackMessagePermalink(slackClient, channelId, messageTs);
+
+  return { displayName, messageLink: permalink, platform: 'slack' };
+}
+
+function getDiscordRequesterInfo(message: Message, displayName: string): RequesterInfo {
+  const raw = message.raw as { guild_id?: string; channel_id?: string } | null;
+  const guildId = raw?.guild_id;
+  const channelId = raw?.channel_id;
+  const messageId = message.id;
+
+  const messageLink =
+    guildId && channelId && messageId
+      ? `https://discord.com/channels/${guildId}/${channelId}/${messageId}`
+      : undefined;
+
+  return { displayName, messageLink, platform: 'discord' };
+}
diff --git a/src/lib/bot/run.ts b/src/lib/bot/run.ts
index c1164e04f..2c3873764 100644
--- a/src/lib/bot/run.ts
+++ b/src/lib/bot/run.ts
@@ -23,6 +23,7 @@ export async function processMessage({
     const result = await runBotAgent({
       thread,
       message,
+      rawMessage: message,
       platformIntegration,
       user,
       botRequestId,
diff --git a/src/lib/bot/tools/spawn-cloud-agent-session.ts b/src/lib/bot/tools/spawn-cloud-agent-session.ts
index 5de03bf34..6cf667db4 100644
--- a/src/lib/bot/tools/spawn-cloud-agent-session.ts
+++ b/src/lib/bot/tools/spawn-cloud-agent-session.ts
@@ -82,15 +82,17 @@ export default async function spawnCloudAgentSession(
   authToken: string,
   ticketUserId: string,
   botRequestId: string | undefined,
-  onSessionReady?: RunSessionInput['onSessionReady']
+  onSessionReady?: RunSessionInput['onSessionReady'],
+  options?: { prSignature?: string; chatPlatform?: string }
 ): Promise<SpawnCloudAgentResult> {
-  console.log('[SlackBot] spawnCloudAgentSession called with args:', JSON.stringify(args, null, 2));
+  console.log('[KiloBot] spawnCloudAgentSession called with args:', JSON.stringify(args, null, 2));
 
   // Build platform-specific prepareInput and initiateInput
   const kilocodeOrganizationId = platformIntegration.owned_by_organization_id || undefined;
   let prepareInput: PrepareSessionInput;
   let initiateInput: { githubToken?: string; kilocodeOrganizationId?: string };
   const mode: AgentMode = args.mode;
+  const chatPlatform = options?.chatPlatform ?? 'slack';
   const callbackTarget =
     botRequestId && INTERNAL_API_SECRET
       ? {
@@ -104,7 +106,7 @@ export default async function spawnCloudAgentSession(
   }
 
   const isGitLab = !!args.gitlabProject;
-  const prompt =
+  let prompt =
     mode === 'code'
       ? args.prompt +
         (isGitLab
@@ -112,6 +114,11 @@ export default async function spawnCloudAgentSession(
           : '\n\nOpen a pull request with your changes and return the PR URL.')
       : args.prompt;
 
+  // Append PR/MR signature to the prompt if available
+  if (options?.prSignature) {
+    prompt += options.prSignature;
+  }
+
   if (args.gitlabProject) {
     // GitLab path: get token + instance URL, build clone URL, use gitUrl/gitToken
     const gitlabToken =
@@ -135,7 +142,7 @@ export default async function spawnCloudAgentSession(
 
     const isSelfHosted = !/^https?:\/\/(www\.)?gitlab\.com(\/|$)/i.test(instanceUrl);
     console.log(
-      '[SlackBot] GitLab session - project:',
+      '[KiloBot] GitLab session - project:',
       args.gitlabProject,
       'instance:',
       isSelfHosted ? 'self-hosted' : 'gitlab.com'
@@ -149,7 +156,7 @@ export default async function spawnCloudAgentSession(
       gitToken: gitlabToken,
       platform: 'gitlab',
       kilocodeOrganizationId,
-      createdOnPlatform: 'slack',
+      createdOnPlatform: chatPlatform,
       callbackTarget,
     };
     initiateInput = { kilocodeOrganizationId };
@@ -174,7 +181,7 @@ export default async function spawnCloudAgentSession(
       model,
       githubToken,
       kilocodeOrganizationId,
-      createdOnPlatform: 'slack',
+      createdOnPlatform: chatPlatform,
       callbackTarget,
     };
     initiateInput = { githubToken, kilocodeOrganizationId };