feat: notify users when AI spend crosses the budget threshold (#27346)

Implements: https://linear.app/codercom/issue/AIGOV-289/notify-users-and-admins-on-budget-warning-and-limit-reached Notify users when their AI spend crosses a budget threshold for their effective group. Two thresholds are covered: a warning at 85%, and a limit-reached notification at 100%. Detection runs on the post-response path, right after the interception's cost is added to the user's daily spend. It reads the user's AI spend on the same transaction where token usage is recorded and AI daily spend is incremented, and derives the pre-interception total by subtracting this interception's cost. In case of `oldSpend < threshold && newSpend >= threshold` - notification is sent. A single interception that crosses both thresholds enqueues both notifications. Detection and delivery are best-effort: a failure is logged and never fails usage recording. The payload uses only stable values (the threshold percentage and the spend limit, not the exact spend), so duplicate enqueues are deduplicated by the notification system. The two templates are added via migration and appear in each user's notification settings under the "AI Budget" group. Admin notifications (owners and user admins) are a follow-up: #27415. ## Screenshots: <img width="1102" height="252" alt="image" src="https://github.com/user-attachments/assets/62291510-09ca-4cdf-a1f5-4bdc11a1db4b" /> <img width="466" height="384" alt="image" src="https://github.com/user-attachments/assets/030460ff-6fe2-4d59-b247-3550c543ef30" /> --------- Co-authored-by: Cian Johnston <cian@coder.com>
2026-09-24 15:04:27 +08:00 · 2026-07-27 12:09:21 -04:00
parent c9e68987c1
commit ce4ee923c2
18 changed files with 940 additions and 3 deletions
@@ -0,0 +1,78 @@
+From: system@coder.com
+To: bobby@coder.com
+Subject: You've reached your monthly AI budget limit
+Message-Id: 02ee4935-73be-4fa1-a290-ff9999026b13@blush-whale-48
+Date: Fri, 11 Oct 2024 09:03:06 +0000
+Content-Type: multipart/alternative;  boundary=bbe61b741255b6098bb6b3c1f41b885773df633cb18d2a3002b68e4bc9c4
+MIME-Version: 1.0
+
+--bbe61b741255b6098bb6b3c1f41b885773df633cb18d2a3002b68e4bc9c4
+Content-Transfer-Encoding: quoted-printable
+Content-Type: text/plain; charset=UTF-8
+
+Hi Bobby,
+
+You have reached your monthly AI budget limit ($1000.00). Subsequent reques=
+ts will be blocked.
+
+Effective group: Engineering
+
+AI budget period: July 1, 2026 - August 1, 2026
+
+
+--bbe61b741255b6098bb6b3c1f41b885773df633cb18d2a3002b68e4bc9c4
+Content-Transfer-Encoding: quoted-printable
+Content-Type: text/html; charset=UTF-8
+
+<!doctype html>
+<html lang=3D"en">
+  <head>
+    <meta charset=3D"UTF-8" />
+    <meta name=3D"viewport" content=3D"width=3Ddevice-width, initial-scale=
+=3D1.0" />
+    <title>You've reached your monthly AI budget limit</title>
+  </head>
+  <body style=3D"margin: 0; padding: 0; font-family: -apple-system, system-=
+ui, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarel=
+l', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif; color: #020617=
+; background: #f8fafc;">
+    <div style=3D"max-width: 600px; margin: 20px auto; padding: 60px; borde=
+r: 1px solid #e2e8f0; border-radius: 8px; background-color: #fff; text-alig=
+n: left; font-size: 14px; line-height: 1.5;">
+      <div style=3D"text-align: center;">
+        <img src=3D"https://coder.com/coder-logo-horizontal.png" alt=3D"Cod=
+er Logo" style=3D"height: 40px;" />
+      </div>
+      <h1 style=3D"text-align: center; font-size: 24px; font-weight: 400; m=
+argin: 8px 0 32px; line-height: 1.5;">
+        You've reached your monthly AI budget limit
+      </h1>
+      <div style=3D"line-height: 1.5;">
+        <p>Hi Bobby,</p>
+        <p>You have reached your monthly AI budget limit ($1000.00). Subseq=
+uent requests will be blocked.</p>
+
+<p>Effective group: <strong>Engineering</strong></p>
+
+<p>AI budget period: July 1, 2026 - August 1, 2026</p>
+      </div>
+      <div style=3D"text-align: center; margin-top: 32px;">
+       =20
+      </div>
+      <div style=3D"border-top: 1px solid #e2e8f0; color: #475569; font-siz=
+e: 12px; margin-top: 64px; padding-top: 24px; line-height: 1.6;">
+        <p>&copy;&nbsp;2024&nbsp;Coder. All rights reserved&nbsp;-&nbsp;<a =
+href=3D"http://test.com" style=3D"color: #2563eb; text-decoration: none;">h=
+ttp://test.com</a></p>
+        <p><a href=3D"http://test.com/settings/notifications" style=3D"colo=
+r: #2563eb; text-decoration: none;">Click here to manage your notification =
+settings</a></p>
+        <p><a href=3D"http://test.com/settings/notifications?disabled=3Dcdc=
+f2ecd-f003-4169-9800-abb2661ea522" style=3D"color: #2563eb; text-decoration=
+: none;">Stop receiving emails like this</a></p>
+      </div>
+    </div>
+  </body>
+</html>
+
+--bbe61b741255b6098bb6b3c1f41b885773df633cb18d2a3002b68e4bc9c4--
@@ -0,0 +1,77 @@
+From: system@coder.com
+To: bobby@coder.com
+Subject: You're approaching your monthly AI budget limit
+Message-Id: 02ee4935-73be-4fa1-a290-ff9999026b13@blush-whale-48
+Date: Fri, 11 Oct 2024 09:03:06 +0000
+Content-Type: multipart/alternative;  boundary=bbe61b741255b6098bb6b3c1f41b885773df633cb18d2a3002b68e4bc9c4
+MIME-Version: 1.0
+
+--bbe61b741255b6098bb6b3c1f41b885773df633cb18d2a3002b68e4bc9c4
+Content-Transfer-Encoding: quoted-printable
+Content-Type: text/plain; charset=UTF-8
+
+Hi Bobby,
+
+You have used more than 85% of your monthly AI budget ($1000.00).
+
+Effective group: Engineering
+
+AI budget period: July 1, 2026 - August 1, 2026
+
+
+--bbe61b741255b6098bb6b3c1f41b885773df633cb18d2a3002b68e4bc9c4
+Content-Transfer-Encoding: quoted-printable
+Content-Type: text/html; charset=UTF-8
+
+<!doctype html>
+<html lang=3D"en">
+  <head>
+    <meta charset=3D"UTF-8" />
+    <meta name=3D"viewport" content=3D"width=3Ddevice-width, initial-scale=
+=3D1.0" />
+    <title>You're approaching your monthly AI budget limit</title>
+  </head>
+  <body style=3D"margin: 0; padding: 0; font-family: -apple-system, system-=
+ui, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarel=
+l', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif; color: #020617=
+; background: #f8fafc;">
+    <div style=3D"max-width: 600px; margin: 20px auto; padding: 60px; borde=
+r: 1px solid #e2e8f0; border-radius: 8px; background-color: #fff; text-alig=
+n: left; font-size: 14px; line-height: 1.5;">
+      <div style=3D"text-align: center;">
+        <img src=3D"https://coder.com/coder-logo-horizontal.png" alt=3D"Cod=
+er Logo" style=3D"height: 40px;" />
+      </div>
+      <h1 style=3D"text-align: center; font-size: 24px; font-weight: 400; m=
+argin: 8px 0 32px; line-height: 1.5;">
+        You're approaching your monthly AI budget limit
+      </h1>
+      <div style=3D"line-height: 1.5;">
+        <p>Hi Bobby,</p>
+        <p>You have used more than 85% of your monthly AI budget ($1000.00)=
+.</p>
+
+<p>Effective group: <strong>Engineering</strong></p>
+
+<p>AI budget period: July 1, 2026 - August 1, 2026</p>
+      </div>
+      <div style=3D"text-align: center; margin-top: 32px;">
+       =20
+      </div>
+      <div style=3D"border-top: 1px solid #e2e8f0; color: #475569; font-siz=
+e: 12px; margin-top: 64px; padding-top: 24px; line-height: 1.6;">
+        <p>&copy;&nbsp;2024&nbsp;Coder. All rights reserved&nbsp;-&nbsp;<a =
+href=3D"http://test.com" style=3D"color: #2563eb; text-decoration: none;">h=
+ttp://test.com</a></p>
+        <p><a href=3D"http://test.com/settings/notifications" style=3D"colo=
+r: #2563eb; text-decoration: none;">Click here to manage your notification =
+settings</a></p>
+        <p><a href=3D"http://test.com/settings/notifications?disabled=3Db5d=
+b9597-de2a-4dea-87e9-25cee6906b86" style=3D"color: #2563eb; text-decoration=
+: none;">Stop receiving emails like this</a></p>
+      </div>
+    </div>
+  </body>
+</html>
+
+--bbe61b741255b6098bb6b3c1f41b885773df633cb18d2a3002b68e4bc9c4--
@@ -0,0 +1,28 @@
+{
+  "_version": "1.1",
+  "msg_id": "00000000-0000-0000-0000-000000000000",
+  "payload": {
+    "_version": "1.2",
+    "notification_name": "AI Budget Limit Reached",
+    "notification_template_id": "00000000-0000-0000-0000-000000000000",
+    "user_id": "00000000-0000-0000-0000-000000000000",
+    "user_email": "bobby@coder.com",
+    "user_name": "Bobby",
+    "user_username": "bobby",
+    "actions": [],
+    "labels": {
+      "effective_group_name": "Engineering",
+      "limit": "$1000.00",
+      "period": "monthly",
+      "period_end": "August 1, 2026",
+      "period_start": "July 1, 2026",
+      "threshold": "100"
+    },
+    "data": {},
+    "targets": null
+  },
+  "title": "You've reached your monthly AI budget limit",
+  "title_markdown": "You've reached your monthly AI budget limit",
+  "body": "You have reached your monthly AI budget limit ($1000.00). Subsequent requests will be blocked.\n\nEffective group: Engineering\n\nAI budget period: July 1, 2026 - August 1, 2026",
+  "body_markdown": "You have reached your monthly AI budget limit ($1000.00). Subsequent requests will be blocked.\n\nEffective group: **Engineering**\n\nAI budget period: July 1, 2026 - August 1, 2026"
+}
@@ -0,0 +1,28 @@
+{
+  "_version": "1.1",
+  "msg_id": "00000000-0000-0000-0000-000000000000",
+  "payload": {
+    "_version": "1.2",
+    "notification_name": "AI Budget Warning",
+    "notification_template_id": "00000000-0000-0000-0000-000000000000",
+    "user_id": "00000000-0000-0000-0000-000000000000",
+    "user_email": "bobby@coder.com",
+    "user_name": "Bobby",
+    "user_username": "bobby",
+    "actions": [],
+    "labels": {
+      "effective_group_name": "Engineering",
+      "limit": "$1000.00",
+      "period": "monthly",
+      "period_end": "August 1, 2026",
+      "period_start": "July 1, 2026",
+      "threshold": "85"
+    },
+    "data": {},
+    "targets": null
+  },
+  "title": "You're approaching your monthly AI budget limit",
+  "title_markdown": "You're approaching your monthly AI budget limit",
+  "body": "You have used more than 85% of your monthly AI budget ($1000.00).\n\nEffective group: Engineering\n\nAI budget period: July 1, 2026 - August 1, 2026",
+  "body_markdown": "You have used more than 85% of your monthly AI budget ($1000.00).\n\nEffective group: **Engineering**\n\nAI budget period: July 1, 2026 - August 1, 2026"
+}