diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5a0daf515f..1dceea3bb7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@ Full release notes with details on each version: [GitHub Releases](https://githu
 
 ## 0.9.63 (2026-09-16)
 
+- Fix: `graphify install`'s completion message now names the platform it just installed for. Bare `graphify install` silently defaults to `claude`, and the old message named no platform at all — a user following a platform-neutral quick start for a different assistant (Codex, OpenCode) saw an apparently successful, generic message while the skill for their actual assistant was still absent, with nothing pointing them at `--platform` (#2263, thanks @Ranteck).
+
 - Feature: Elixir `alias`/`import`/`require`/`use` targets now resolve onto the module's `defmodule` node across files, so the internal module dependency graph is no longer dropped as dangling. Only top-level modules are indexed (a nested `defmodule`, labeled with its bare inner name, cannot capture an unrelated `use <Name>` from another file), and a same-file reference is left unresolved so it cannot clobber the structural `contains` edge (#3603, thanks @ayushcodes10).
 - Feature: a Rust `self.method()` call now resolves to a method defined on the same type in another file (the common split-`impl`-block layout), pooling methods across every `impl` of one type and refusing to link when two unrelated types share a bare name (#3602, thanks @ayushcodes10).
 - Feature: a Ruby member call `obj.foo` on a known-type receiver now resolves to a method `foo` inherited from a superclass, including across files, using the same conservative promotion as the implicit-self resolver — a single owning class, matching method kind, and one unambiguous ancestry chain, or it stays dangling (#3585, thanks @oleksii-tumanov).
diff --git a/graphify/install.py b/graphify/install.py
index 2fb2192760..cc29399b19 100644
--- a/graphify/install.py
+++ b/graphify/install.py
@@ -728,8 +728,19 @@ def install(platform: str = "claude", *, project: bool = False, project_dir: Pat
     if project:
         _print_project_git_add_hint([_project_scope_root(skill_dst, project_dir)])
 
+    # #2263: bare `graphify install` silently defaults to claude, and the old
+    # completion message named no platform at all - a user following a
+    # platform-neutral quick start for e.g. Codex or OpenCode saw an
+    # apparently platform-neutral success message while the skill for their
+    # actual assistant was still absent. Name the platform explicitly, and
+    # give an example that is never the platform just installed.
     print()
-    print("Done. Open your AI coding assistant and type:")
+    print(f"Done. Installed the graphify skill for '{platform}'.")
+    example_platform = "codex" if platform != "codex" else "claude"
+    print(f"Wrong assistant? Re-run with e.g. `graphify install --platform {example_platform}`")
+    print("(see `graphify install --help` for the full platform list).")
+    print()
+    print("Open your AI coding assistant and type:")
     print()
     print("  /graphify .")
     print()
diff --git a/tests/test_install.py b/tests/test_install.py
index 72d4e4dd26..23318abb28 100644
--- a/tests/test_install.py
+++ b/tests/test_install.py
@@ -40,6 +40,28 @@ def test_install_default_claude(tmp_path):
     assert (tmp_path / ".claude" / "skills" / "graphify" / "SKILL.md").exists()
 
 
+def test_install_completion_message_names_the_platform(tmp_path, capsys):
+    """#2263: the completion message must name which platform was installed,
+    and its "wrong assistant" example must never suggest the platform that
+    was just installed - so a Codex user following a platform-neutral quick
+    start (which defaults to claude) sees the mismatch instead of a generic
+    success message."""
+    from graphify.__main__ import install
+
+    old_cwd = Path.cwd()
+    try:
+        os.chdir(tmp_path)
+        with patch("graphify.__main__.Path.home", return_value=tmp_path):
+            install(platform="claude")
+    finally:
+        os.chdir(old_cwd)
+
+    out = capsys.readouterr().out
+    assert "Installed the graphify skill for 'claude'." in out
+    assert "--platform claude" not in out
+    assert "--platform codex" in out
+
+
 def test_install_survives_a_winerror_17_replace(tmp_path, monkeypatch):
     """#3508: installing SKILL.md failed on some Windows setups with WinError
     17 ("cannot move to a different disk drive") from `os.replace`, even with