diff --git a/quartz/plugins/loader/config-loader.ts b/quartz/plugins/loader/config-loader.ts
index 76d6f7a66..192dba803 100644
--- a/quartz/plugins/loader/config-loader.ts
+++ b/quartz/plugins/loader/config-loader.ts
@@ -8,6 +8,7 @@ import { PluginTypes } from "../types"
 import {
   PluginManifest,
   PluginJsonEntry,
+  PluginSource,
   QuartzPluginsJson,
   LayoutConfig,
   PluginLayoutDeclaration,
@@ -50,8 +51,12 @@ function readPluginsJson(): QuartzPluginsJson | null {
   return JSON.parse(raw) as QuartzPluginsJson
 }
 
-function extractPluginName(source: string): string {
-  // Local file paths: use directory basename
+function extractPluginName(source: PluginSource): string {
+  if (typeof source === "object" && source !== null) {
+    if (source.name) return source.name
+    return extractPluginName(source.repo)
+  }
+
   if (isLocalSource(source)) {
     return path.basename(source.replace(/[\/]+$/, ""))
   }
@@ -69,6 +74,19 @@ function extractPluginName(source: string): string {
   return source
 }
 
+function formatSourceDisplay(source: PluginSource): string {
+  if (typeof source === "string") return source
+  const parts = [source.repo]
+  if (source.subdir) parts.push(`(subdir: ${source.subdir})`)
+  if (source.ref) parts.push(`(ref: ${source.ref})`)
+  return parts.join(" ")
+}
+
+function sourceKey(source: PluginSource): string {
+  if (typeof source === "string") return source
+  return JSON.stringify(source)
+}
+
 interface DependencyValidationResult {
   errors: string[]
   warnings: string[]
@@ -84,13 +102,13 @@ function validateDependencies(
   const sourceToEntry = new Map<string, PluginJsonEntry>()
   const nameToSource = new Map<string, string>()
   for (const entry of entries) {
-    sourceToEntry.set(entry.source, entry)
-    nameToSource.set(extractPluginName(entry.source), entry.source)
+    sourceToEntry.set(sourceKey(entry.source), entry)
+    nameToSource.set(extractPluginName(entry.source), sourceKey(entry.source))
   }
 
   for (const entry of entries) {
     if (!entry.enabled) continue
-    const manifest = manifests.get(entry.source)
+    const manifest = manifests.get(sourceKey(entry.source))
     if (!manifest?.dependencies?.length) continue
 
     const pluginName = manifest.displayName || extractPluginName(entry.source)
@@ -126,12 +144,11 @@ function validateDependencies(
     }
   }
 
-  // Circular dependency detection
   const graph = new Map<string, string[]>()
   for (const entry of entries) {
-    const manifest = manifests.get(entry.source)
+    const manifest = manifests.get(sourceKey(entry.source))
     if (manifest?.dependencies?.length) {
-      graph.set(entry.source, manifest.dependencies)
+      graph.set(sourceKey(entry.source), manifest.dependencies)
     }
   }
 
@@ -169,7 +186,7 @@ function validateDependencies(
   return { errors, warnings }
 }
 
-async function resolvePluginManifest(source: string): Promise<PluginManifest | null> {
+async function resolvePluginManifest(source: PluginSource): Promise<PluginManifest | null> {
   try {
     const gitSpec = parsePluginSource(source)
     const entryPoint = getPluginEntryPoint(gitSpec.name, gitSpec.subdir)
@@ -180,7 +197,7 @@ async function resolvePluginManifest(source: string): Promise<PluginManifest | n
   }
 }
 
-async function readManifestFromPackageJson(source: string): Promise<PluginManifest | null> {
+async function readManifestFromPackageJson(source: PluginSource): Promise<PluginManifest | null> {
   try {
     const gitSpec = parsePluginSource(source)
     const pluginDir = path.join(process.cwd(), ".quartz", "plugins", gitSpec.name)
@@ -213,7 +230,7 @@ async function readManifestFromPackageJson(source: string): Promise<PluginManife
   }
 }
 
-async function getManifest(source: string): Promise<PluginManifest | null> {
+async function getManifest(source: PluginSource): Promise<PluginManifest | null> {
   // Try package.json quartz field first (preferred), then fall back to manifest.ts export
   return (await readManifestFromPackageJson(source)) ?? (await resolvePluginManifest(source))
 }
@@ -249,7 +266,7 @@ export async function loadQuartzConfig(
     } catch (err) {
       console.error(
         styleText("red", `✗`) +
-          ` Failed to install plugin: ${styleText("yellow", entry.source)}\n` +
+          ` Failed to install plugin: ${styleText("yellow", formatSourceDisplay(entry.source))}\n` +
           `  ${err instanceof Error ? err.message : String(err)}`,
       )
     }
@@ -264,12 +281,12 @@ export async function loadQuartzConfig(
     try {
       const manifest = await getManifest(entry.source)
       if (manifest) {
-        manifests.set(entry.source, manifest)
+        manifests.set(sourceKey(entry.source), manifest)
       }
     } catch (err) {
       console.error(
         styleText("red", `✗`) +
-          ` Failed to load manifest: ${styleText("yellow", entry.source)}\n` +
+          ` Failed to load manifest: ${styleText("yellow", formatSourceDisplay(entry.source))}\n` +
           `  ${err instanceof Error ? err.message : String(err)}`,
       )
     }
@@ -296,7 +313,7 @@ export async function loadQuartzConfig(
   const pageTypes: { entry: PluginJsonEntry; manifest: PluginManifest | undefined }[] = []
 
   for (const entry of enabledEntries) {
-    const manifest = manifests.get(entry.source)
+    const manifest = manifests.get(sourceKey(entry.source))
     const category = manifest?.category
     // Resolve processing categories: for array categories (e.g. ["transformer", "pageType", "component"]),
     // push the plugin into ALL matching processing category buckets.
@@ -683,7 +700,8 @@ function buildLayoutForEntries(
 
     // Look up component from registry
     const registered =
-      componentRegistry.get(name) ?? componentRegistry.get(`${entry.source}/${name}`)
+      componentRegistry.get(name) ??
+      componentRegistry.get(`${formatSourceDisplay(entry.source)}/${name}`)
     if (!registered) {
       // Try common naming patterns
       const pascalName = name
diff --git a/quartz/plugins/loader/gitLoader.ts b/quartz/plugins/loader/gitLoader.ts
index 0c471d4f4..79deaf97f 100644
--- a/quartz/plugins/loader/gitLoader.ts
+++ b/quartz/plugins/loader/gitLoader.ts
@@ -5,6 +5,7 @@ import git from "isomorphic-git"
 import http from "isomorphic-git/http/node"
 import { styleText } from "util"
 import { pathToFileURL } from "url"
+import { PluginSource } from "./types"
 
 /**
  * Convert an absolute filesystem path to a file:// URL string for use with dynamic import().
@@ -40,7 +41,10 @@ const PLUGINS_CACHE_DIR = path.join(process.cwd(), ".quartz", "plugins")
  * Check if a source string refers to a local file path.
  * Local sources start with ./, ../, / or a Windows drive letter (e.g. C:\).
  */
-export function isLocalSource(source: string): boolean {
+export function isLocalSource(source: PluginSource): boolean {
+  if (typeof source === "object") {
+    return isLocalSource(source.repo)
+  }
   if (source.startsWith("./") || source.startsWith("../") || source.startsWith("/")) {
     return true
   }
@@ -60,7 +64,22 @@ export function isLocalSource(source: string): boolean {
  * - "git+https://..." -> direct git URL
  * - "https://github.com/..." -> direct https URL
  */
-export function parsePluginSource(source: string): GitPluginSpec {
+export function parsePluginSource(source: PluginSource): GitPluginSpec {
+  if (typeof source === "object" && source !== null) {
+    const url = source.repo
+    const subdir = source.subdir
+    const ref = source.ref
+
+    if (isLocalSource(url)) {
+      const resolved = path.resolve(url)
+      const name = source.name ?? path.basename(resolved)
+      return { name, repo: resolved, local: true, subdir }
+    }
+
+    const name = source.name ?? extractRepoName(url)
+    return { name, repo: url, ref: ref || undefined, subdir }
+  }
+
   // Handle local paths
   if (isLocalSource(source)) {
     const resolved = path.resolve(source)
diff --git a/quartz/plugins/loader/types.ts b/quartz/plugins/loader/types.ts
index 85c76f5ef..30ed00efc 100644
--- a/quartz/plugins/loader/types.ts
+++ b/quartz/plugins/loader/types.ts
@@ -141,9 +141,20 @@ export interface PluginLayoutDeclaration {
   }
 }
 
+/** Object form of a plugin source (for monorepo / advanced config) */
+export interface PluginSourceObject {
+  repo: string
+  subdir?: string
+  ref?: string
+  name?: string
+}
+
+/** A plugin source can be a string shorthand or an object with additional fields */
+export type PluginSource = string | PluginSourceObject
+
 /** A single plugin entry in quartz.config.yaml */
 export interface PluginJsonEntry {
-  source: string
+  source: PluginSource
   enabled: boolean
   options?: Record<string, unknown>
   order?: number