diff --git a/packages/cloud-agents/evals/router/prompts/routing.ts b/packages/cloud-agents/evals/router/prompts/routing.ts
index ead22a48..904284ee 100644
--- a/packages/cloud-agents/evals/router/prompts/routing.ts
+++ b/packages/cloud-agents/evals/router/prompts/routing.ts
@@ -149,7 +149,7 @@ Respond with a single JSON object containing exactly these fields:
 - "workspaceValue" (string): Name of the chosen environment.
 - "reasoning" (string): Brief explanation of your workspace decision.
 - "confidence" (number): Confidence in the workspace choice from 0 to 1.
-- "kickoffMessage" (string or null): Full short user-facing kickoff sentence (about 8-18 words). Naturally include the chosen environment name, and naturally include the model display name when requestedModelId is a real model. Vary wording; no "Getting started on your task in…" boilerplate every time. No emojis, markdown, quotes, mentions, or trailing period.
+- "kickoffMessage" (string or null): Full short user-facing kickoff sentence (about 8-18 words). Naturally include the chosen environment name, and naturally include the model display name when requestedModelId is a real model. Vary wording; no "Getting started on your task in…" boilerplate every time. No emojis, markdown, quotes, or mentions.
 - "needsExternalLookup" (boolean): Whether an external reference must be fetched before routing, per the external lookup rules.
 - "externalReference" (string or null): The exact external reference to fetch when needsExternalLookup is true, otherwise null.
 - "requestedModelId" (string or null): The model id the user explicitly requested from the Available Models list, or the literal "${NO_MODEL_MENTIONED_VALUE}" when the user does not name a model.
diff --git a/packages/cloud-agents/src/server/router/prompts/routing-prompt.ts b/packages/cloud-agents/src/server/router/prompts/routing-prompt.ts
index f63da3f4..50aa7227 100644
--- a/packages/cloud-agents/src/server/router/prompts/routing-prompt.ts
+++ b/packages/cloud-agents/src/server/router/prompts/routing-prompt.ts
@@ -54,7 +54,7 @@ Also always set \`kickoffMessage\` to the full short user-facing kickoff for cha
   - "Checking mobile login redirects in Payments with Opus 4.8"
   - "Digging into the flaky checkout email race in Full Stack"
 - The environment and model names in the sentence must match the Available lists exactly (same spelling/casing as shown).
-- Do not include emojis, markdown, quotes, @-mentions, Slack markup, or a trailing period.
+- Do not include emojis, markdown, quotes, @-mentions, or Slack markup.
 - Do not invent environment or model names that are not in the provided lists.
 - Always produce a non-empty kickoffMessage for real routed tasks. Keep routing justification in \`reasoning\`; keep the spoken kickoff in \`kickoffMessage\`.`;
 
diff --git a/packages/cloud-agents/src/server/router/routing-resolution.ts b/packages/cloud-agents/src/server/router/routing-resolution.ts
index 260b78d4..ebf32d35 100644
--- a/packages/cloud-agents/src/server/router/routing-resolution.ts
+++ b/packages/cloud-agents/src/server/router/routing-resolution.ts
@@ -47,7 +47,7 @@ export const workspaceResponseSchema = z.object({
     .string()
     .nullable()
     .describe(
-      'Full short user-facing kickoff sentence posted in chat (about 8-18 words). Naturally include the exact chosen environment name, and when requestedModelId is a real model also naturally include that model display name from the Available Models list. Vary the wording; do not always use "Getting started on your task in…". No emojis, markdown, quotes, mentions, or trailing period. Always provide a non-empty value for real routed tasks.',
+      'Full short user-facing kickoff sentence posted in chat (about 8-18 words). Naturally include the exact chosen environment name, and when requestedModelId is a real model also naturally include that model display name from the Available Models list. Vary the wording; do not always use "Getting started on your task in…". No emojis, markdown, quotes, or mentions. Always provide a non-empty value for real routed tasks.',
     )
     .optional()
     .default(null),
diff --git a/packages/communication/src/__tests__/chat-messages.test.ts b/packages/communication/src/__tests__/chat-messages.test.ts
index 76529ff9..2b09caa9 100644
--- a/packages/communication/src/__tests__/chat-messages.test.ts
+++ b/packages/communication/src/__tests__/chat-messages.test.ts
@@ -112,10 +112,10 @@ describe('chat message copy builders', () => {
         workspaceDisplayName: 'App',
         freeformKickoffEnabled: true,
         kickoffMessage:
-          'Checking login redirects in App with Anthropic Claude Fable 5',
+          'Checking login redirects in App with Anthropic Claude Fable 5.',
         modelDisplayName: 'Anthropic Claude Fable 5',
       }),
-    ).toBe('Checking login redirects in App with Anthropic Claude Fable 5');
+    ).toBe('Checking login redirects in App with Anthropic Claude Fable 5.');
 
     // Flag off (default): free-form is ignored in favor of the template.
     expect(
diff --git a/packages/communication/src/chat-messages.ts b/packages/communication/src/chat-messages.ts
index f081e97f..5511b66c 100644
--- a/packages/communication/src/chat-messages.ts
+++ b/packages/communication/src/chat-messages.ts
@@ -167,7 +167,6 @@ export function normalizeKickoffMessage(
   // mentions or special link markup when inserted into a section block.
   text = text.replace(SLACK_CONTROL_TOKEN_PATTERN, ' ').replace(/[<>]/g, ' ');
   text = text.replace(/\s+/g, ' ').trim();
-  text = text.replace(/\.+$/, '').trim();
 
   if (!text) {
     return undefined;