diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index 030157f..bc19414 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -1,4 +1,4 @@
-**References:** [Contributing guide](../CONTRIBUTING.md) · [Skill authoring guide](../README.md)
+**References:** [Contributing guide](../CONTRIBUTING.md) · [Skill authoring guide](../README.md) · [Agent Skills spec](https://agentskills.io/specification)
 
 ## What changed
 
@@ -35,9 +35,9 @@
 
 ### Automated checks
 
-Enforced by CI ([`npm run validate:skills`](../scripts/validate-skills.ts)):
+Enforced by CI ([`npm run validate:skills`](../scripts/validate-skills.ts)) per the [Agent Skills spec](https://agentskills.io/specification):
 
-- Directory is one level deep, named in kebab-case, contains `SKILL.md`
-- Frontmatter `name` matches directory name; `description` is present, ≥ 20 words, and includes trigger language
+- Directory is one level deep, named in kebab-case (max 64 chars), contains `SKILL.md`
+- Frontmatter `name` matches directory name; `description` is present, ≥ 20 words, ≤ 1024 characters, and includes trigger language
 - Body is non-empty and under 500 lines
 - Name uses gerund form ⚠ (warning — does not block merge)
diff --git a/scripts/validate-skills.ts b/scripts/validate-skills.ts
index 4e1fa7d..d0e895d 100644
--- a/scripts/validate-skills.ts
+++ b/scripts/validate-skills.ts
@@ -81,6 +81,15 @@ const STRUCTURE_CHECKS: StructureCheck[] = [
       return { errors: [] }
     },
   },
+  {
+    description: "Name must be at most 64 characters",
+    run(dirName) {
+      if (dirName.length > 64) {
+        return { errors: [`skills/${dirName}: name is ${dirName.length} characters (maximum 64)`] }
+      }
+      return { errors: [] }
+    },
+  },
   {
     description: "Name should use gerund form — first word should end in -ing (e.g. generating-apex-tests)",
     run(dirName) {
@@ -176,6 +185,17 @@ const CONTENT_CHECKS: ContentCheck[] = [
       return { errors: [] }
     },
   },
+  {
+    description: "Description must be at most 1024 characters",
+    run({ dirName, frontmatter }) {
+      if (!frontmatter) return { errors: [] }
+      const len = frontmatter.description?.length ?? 0
+      if (len > 1024) {
+        return { errors: [`skills/${dirName}/SKILL.md: description is ${len} characters (maximum 1024)`] }
+      }
+      return { errors: [] }
+    },
+  },
   {
     description: 'Description must include trigger/activation language (contain "use")',
     run({ dirName, frontmatter }) {
@@ -319,6 +339,9 @@ function main(): void {
     if (errors.length === 0) passed++
   }
 
+  const hasIssues = allErrors.length > 0 || allWarnings.length > 0
+  const footer = "  Spec: https://agentskills.io/specification · Authoring guide: https://github.com/forcedotcom/afv-library#readme"
+
   if (allWarnings.length > 0) {
     console.warn(`\n${allWarnings.length} warning(s):\n`)
     for (const w of allWarnings) {
@@ -333,9 +356,12 @@ function main(): void {
       console.error(`  ✗ ${err}`)
     }
     console.error("")
+    console.error(footer)
+    console.error("")
     process.exit(1)
   } else {
     console.log(`Skill validation passed: ${passed} of ${entries.length} skill(s) checked.`)
+    if (hasIssues) console.warn(footer)
   }
 }