diff --git a/packages/junior/src/chat/slack/footer.ts b/packages/junior/src/chat/slack/footer.ts
index 78ba2a6d..a7ac08f7 100644
--- a/packages/junior/src/chat/slack/footer.ts
+++ b/packages/junior/src/chat/slack/footer.ts
@@ -3,7 +3,6 @@ import type { TurnThinkingSelection } from "@/chat/services/turn-thinking-level"
 import type { AgentTurnUsage } from "@/chat/usage";
 
 const SENTRY_CONVERSATION_SEARCH_STATS_PERIOD = "14d";
-const ORG_ID_HOST_RE = /^o(\d+)\./;
 
 interface SlackMrkdwnTextObject {
   text: string;
@@ -55,19 +54,13 @@ function escapeSlackLinkUrl(url: string): string {
     .replaceAll(">", "%3E");
 }
 
-function toOptionalString(value: unknown): string | undefined {
-  if (typeof value === "number" && Number.isFinite(value)) {
-    return String(value);
-  }
-  return typeof value === "string" && value.trim() ? value.trim() : undefined;
-}
-
 function quoteSentrySearchValue(value: string): string {
   return `"${value.replaceAll("\\", "\\\\").replaceAll('"', '\\"')}"`;
 }
 
-function getDsnOrgId(host: string | undefined): string | undefined {
-  return host?.match(ORG_ID_HOST_RE)?.[1];
+function getSentryOrgSlug(): string | undefined {
+  const slug = process.env.SENTRY_ORG_SLUG?.trim();
+  return slug || undefined;
 }
 
 function isSentrySaasDsnHost(host: string): boolean {
@@ -98,9 +91,8 @@ function getSentryConversationSearchUrl(
     return undefined;
   }
 
-  const orgId =
-    toOptionalString(client?.getOptions().orgId) ?? getDsnOrgId(dsn.host);
-  if (!orgId) {
+  const orgSlug = getSentryOrgSlug();
+  if (!orgSlug) {
     return undefined;
   }
 
@@ -112,7 +104,13 @@ function getSentryConversationSearchUrl(
   params.set("project", dsn.projectId);
   params.set("statsPeriod", SENTRY_CONVERSATION_SEARCH_STATS_PERIOD);
 
-  return `${buildSentryWebBaseUrl(dsn)}/organizations/${orgId}/explore/traces/?${params.toString()}`;
+  const search = `explore/traces/?${params.toString()}`;
+
+  if (isSentrySaasDsnHost(dsn.host)) {
+    return `https://${orgSlug}.sentry.io/${search}`;
+  }
+
+  return `${buildSentryWebBaseUrl(dsn)}/organizations/${orgSlug}/${search}`;
 }
 
 function formatSlackTokenCount(value: number): string {
diff --git a/packages/junior/src/cli/init.ts b/packages/junior/src/cli/init.ts
index 0f1c424b..6c9cf762 100644
--- a/packages/junior/src/cli/init.ts
+++ b/packages/junior/src/cli/init.ts
@@ -149,6 +149,7 @@ AI_VISION_MODEL=
 AI_WEB_SEARCH_MODEL=
 REDIS_URL=
 SENTRY_DSN=
+SENTRY_ORG_SLUG=
 `,
   );
 
diff --git a/packages/junior/tests/unit/slack/footer-sentry-link.test.ts b/packages/junior/tests/unit/slack/footer-sentry-link.test.ts
index 747d481a..4d8027d9 100644
--- a/packages/junior/tests/unit/slack/footer-sentry-link.test.ts
+++ b/packages/junior/tests/unit/slack/footer-sentry-link.test.ts
@@ -24,12 +24,14 @@ async function loadFooter() {
 }
 
 afterEach(() => {
+  delete process.env.SENTRY_ORG_SLUG;
   vi.doUnmock("@/chat/sentry");
   vi.resetModules();
 });
 
 describe("Slack footer Sentry links", () => {
-  it("links the ID to an Explore traces search from the active SaaS DSN", async () => {
+  it("links the ID to an Explore traces search using org slug subdomain for SaaS", async () => {
+    process.env.SENTRY_ORG_SLUG = "my-org";
     mockSentryClient({
       dsn: {
         protocol: "https",
@@ -53,14 +55,14 @@ describe("Slack footer Sentry links", () => {
         elements: [
           {
             type: "mrkdwn",
-            text: "*ID:* <https://sentry.io/organizations/123/explore/traces/?query=gen_ai.conversation.id%3A%22slack%3AC123%3A1700000000.000100%22&amp;project=4501&amp;statsPeriod=14d|slack:C123:1700000000.000100>",
+            text: "*ID:* <https://my-org.sentry.io/explore/traces/?query=gen_ai.conversation.id%3A%22slack%3AC123%3A1700000000.000100%22&amp;project=4501&amp;statsPeriod=14d|slack:C123:1700000000.000100>",
           },
         ],
       },
     ]);
   });
 
-  it("uses an explicit SDK orgId before the DSN host org ID", async () => {
+  it("leaves the ID plain when SENTRY_ORG_SLUG is not set even with numeric org data", async () => {
     mockSentryClient({
       dsn: {
         protocol: "https",
@@ -77,7 +79,31 @@ describe("Slack footer Sentry links", () => {
         items: [
           {
             label: "ID",
-            url: "https://sentry.io/organizations/456/explore/traces/?query=gen_ai.conversation.id%3A%22conversation-1%22&project=4501&statsPeriod=14d",
+            value: "conversation-1",
+          },
+        ],
+      },
+    );
+  });
+
+  it("uses /organizations/{slug}/ for self-hosted DSN", async () => {
+    process.env.SENTRY_ORG_SLUG = "my-org";
+    mockSentryClient({
+      dsn: {
+        protocol: "https",
+        host: "sentry.example.com",
+        projectId: "4501",
+      },
+    });
+
+    const { buildSlackReplyFooter } = await loadFooter();
+
+    expect(buildSlackReplyFooter({ conversationId: "conversation-1" })).toEqual(
+      {
+        items: [
+          {
+            label: "ID",
+            url: "https://sentry.example.com/organizations/my-org/explore/traces/?query=gen_ai.conversation.id%3A%22conversation-1%22&project=4501&statsPeriod=14d",
             value: "conversation-1",
           },
         ],