diff --git a/src/workspaces/helpers/clipboard.ts b/src/workspaces/helpers/clipboard.ts
index dfb37c3f..6213e920 100644
--- a/src/workspaces/helpers/clipboard.ts
+++ b/src/workspaces/helpers/clipboard.ts
@@ -7,9 +7,12 @@
  * is not localhost the whole object is undefined, so `navigator.clipboard.writeText`
  * throws `TypeError: Cannot read properties of undefined`.
  *
- * Officer is reached over the tailnet — `http://officer-dev:9000` — which is
- * neither https nor localhost. Twenty call sites were affected, in three states
- * that all looked fine in review:
+ * Officer is reachable over plain http — `http://officer-dev:9000` on the tailnet —
+ * which is neither https nor localhost. The owner's own browsing is over https
+ * (`platform.officer.dev`) and was already https when this was written; the http
+ * origins are the other ways in, and an install with no certificate has no other
+ * way in at all. Twenty call sites were affected, in three states that all looked
+ * fine in review:
  *
  *   bare `navigator.clipboard.writeText(x)`   threw, killing the handler
  *   `navigator.clipboard?.writeText(x)`       did nothing, silently
diff --git a/src/workspaces/officerdev/src/apps/Chat/components/ClaudeLoginDialog.tsx b/src/workspaces/officerdev/src/apps/Chat/components/ClaudeLoginDialog.tsx
index 043d0294..9b7a0dc8 100644
--- a/src/workspaces/officerdev/src/apps/Chat/components/ClaudeLoginDialog.tsx
+++ b/src/workspaces/officerdev/src/apps/Chat/components/ClaudeLoginDialog.tsx
@@ -1,9 +1,10 @@
 import { useEffect, useRef, useState } from 'react';
-import { Check, ExternalLink, Loader2 } from 'lucide-react';
+import { Check, Copy, ExternalLink, Loader2 } from 'lucide-react';
 import { Dialog, DialogContent, DialogHeader, DialogTitle } from '@/components/ui/dialog';
 import { Input } from '@/components/ui/input';
 import { useClient } from 'hooks/useClient';
 import { errorText } from 'helpers/error-text';
+import { copyToClipboard } from 'helpers/clipboard';
 
 /*
   `/login` — the same flow as the terminal, without the terminal.
@@ -29,6 +30,7 @@ export const ClaudeLoginDialog = ({ open, onOpenChange }: Props) => {
   const [busy, setBusy] = useState(false);
   const [error, setError] = useState<string | null>(null);
   const [done, setDone] = useState(false);
+  const [copied, setCopied] = useState(false);
   const codeRef = useRef<HTMLInputElement>(null);
 
   // Start on open, and abandon on close. The server holds a live `claude` process per pending login, so a
@@ -101,17 +103,38 @@ export const ClaudeLoginDialog = ({ open, onOpenChange }: Props) => {
               <p className="text-sm text-muted-foreground">
                 Open this, authorise, and paste back the code it gives you.
               </p>
-              {/* A real anchor. Every link here opens a new tab, which is what you want for this one —
-                  losing the dialog would lose the process holding the other half of the exchange. */}
-              <a
-                href={started.url}
-                target="_blank"
-                rel="noreferrer"
-                className="inline-flex items-center gap-1.5 rounded-md bg-primary px-3 py-1.5 text-sm font-medium text-primary-foreground hover:opacity-90"
-              >
-                Authorise in claude.com
-                <ExternalLink className="h-3.5 w-3.5" />
-              </a>
+              <div className="flex items-center gap-2">
+                {/* A real anchor. Every link here opens a new tab, which is what you want for this one —
+                    losing the dialog would lose the process holding the other half of the exchange. */}
+                <a
+                  href={started.url}
+                  target="_blank"
+                  rel="noreferrer"
+                  className="inline-flex items-center gap-1.5 rounded-md bg-primary px-3 py-1.5 text-sm font-medium text-primary-foreground hover:opacity-90"
+                >
+                  Authorise in claude.com
+                  <ExternalLink className="h-3.5 w-3.5" />
+                </a>
+                {/* Copy, because opening here opens in THIS browser — already signed into whichever account
+                    you are trying to move away from. Pasting into another profile or another device is how
+                    you sign in as somebody else, and this dialog exists precisely for the machine with two
+                    Anthropic accounts on it. */}
+                <button
+                  type="button"
+                  onClick={() => {
+                    void copyToClipboard(started.url).then((ok) => {
+                      setCopied(ok);
+                      if (ok) setTimeout(() => setCopied(false), 2_000);
+                      else setError('could not reach the clipboard — select the link and copy it by hand');
+                    });
+                  }}
+                  title="Copy the link, to open it in another browser or on your phone"
+                  className="inline-flex items-center gap-1.5 rounded-md border border-border px-3 py-1.5 text-sm font-medium hover:bg-foreground/5"
+                >
+                  {copied ? <Check className="h-3.5 w-3.5 text-success" /> : <Copy className="h-3.5 w-3.5" />}
+                  {copied ? 'Copied' : 'Copy link'}
+                </button>
+              </div>
             </div>
 
             <div className="space-y-1">