diff --git a/docs/development/agent-workflow.md b/docs/development/agent-workflow.md
index 891a2e27b..5682c0c85 100644
--- a/docs/development/agent-workflow.md
+++ b/docs/development/agent-workflow.md
@@ -68,7 +68,7 @@ rejected before those exemptions. TypeScript configuration is parsed as JSONC.
 Declared packages also permit safe subpaths; exact aliases stay exact.
 Declared package mentions may include a version or dist-tag qualifier.
 Qualifier handling includes unscoped names; terminal sentence punctuation is
-removed before matching a declared package.
+removed before matching a declared package, as are straight/curly apostrophe possessives.
 Markdown destinations decode HTML entities before URI parsing, matching rendered links.
 Heading-anchor lookup is limited to Markdown targets. Source-file line fragments,
 PDF page fragments and other non-Markdown fragments retain file-existence checks.
diff --git a/tools/skills/validate-agent-guidance.mjs b/tools/skills/validate-agent-guidance.mjs
index 074bdf317..1929170b2 100644
--- a/tools/skills/validate-agent-guidance.mjs
+++ b/tools/skills/validate-agent-guidance.mjs
@@ -115,6 +115,7 @@ async function packageMentions(rootDir) {
     const scopes = new Set(declared.map((name) => name.split('/')[0]));
     return (raw) => {
         let token = raw.replace(/[?!.,;:)"'\]}]+$/u, '');
+        token = token.replace(/['’]s$/iu, '');
         token = token.replace(
             /^([^/@]+(?:\/[^/@]+)?)@(?:[~^]?\d[\w.+-]*|[a-z][\w-]*)$/iu,
             '$1'
diff --git a/tools/skills/validate-agent-guidance.test.mjs b/tools/skills/validate-agent-guidance.test.mjs
index 941f74a3a..621dc80e9 100644
--- a/tools/skills/validate-agent-guidance.test.mjs
+++ b/tools/skills/validate-agent-guidance.test.mjs
@@ -991,3 +991,17 @@ for (const html of [
         );
     });
 }
+
+for (const suffix of ["'s", '’s']) {
+    test(`declared package may be possessive: ${suffix}`, async (t) => {
+        assert.deepEqual(
+            await diagnostics(t, {
+                'package.json': JSON.stringify({
+                    dependencies: { '@angular/core': '*' },
+                }),
+                'AGENTS.md': '@angular/core' + suffix + ' API',
+            }),
+            []
+        );
+    });
+}