diff --git a/src/lib/microcosm/hydrate.ts b/src/lib/microcosm/hydrate.ts
index 868563e..053dab7 100644
--- a/src/lib/microcosm/hydrate.ts
+++ b/src/lib/microcosm/hydrate.ts
@@ -18,14 +18,11 @@ import {
   type AppBskyActorProfile,
   type AppBskyFeedDefs,
   type AppBskyFeedPost,
+  type AtpAgent,
 } from '@atproto/api'
 
 import {constellation} from '#/lib/microcosm'
-import {
-  countRecords,
-  getRecordByUri,
-  resolveMiniDoc,
-} from '#/lib/microcosm/slingshot'
+import {getRecordByUri, resolveMiniDoc} from '#/lib/microcosm/slingshot'
 import {IMG_CDN_URL} from '#/env'
 
 /**
@@ -198,19 +195,21 @@ async function hydrateEmbed(
  * Hydrate a `ProfileViewDetailed` for a DID or handle from microcosm.
  *
  * - `followersCount` comes from Constellation (backlinks of follows -> this DID).
- * - `followsCount` / `postsCount` come from counting the DID's own
- *   `app.bsky.graph.follow` / `app.bsky.feed.post` records via listRecords
- *   (these aren't backlinks). Bounded by countRecords' page cap, so very busy
- *   accounts report a floor (e.g. "3000+") rather than an exact total.
+ * - `followsCount` / `postsCount` are PRE-COMPUTED server-side counts that
+ *   microcosm cannot reproduce (Constellation is target-indexed; PDS pagination
+ *   is non-viable for busy accounts). If an `agent` is provided, we fetch just
+ *   those two numbers from the AppView's getProfile. Everything else stays
+ *   microcosm-sourced; without an agent the counts are simply omitted.
  */
 export async function hydrateProfile(
   identifier: string,
   signal?: AbortSignal,
+  agent?: AtpAgent,
 ): Promise<AppBskyActorDefs.ProfileViewDetailed> {
   const mini = await resolveMiniDoc(identifier, signal)
   const {did, handle} = mini
 
-  const [recordRes, followers, follows, posts] = await Promise.all([
+  const [recordRes, followers, counts] = await Promise.all([
     getRecordByUri(
       `at://${did}/app.bsky.actor.profile/self`,
       undefined,
@@ -219,16 +218,16 @@ export async function hydrateProfile(
     constellation
       .getBacklinksCount(did, constellation.Sources.followers, signal)
       .catch(() => undefined),
-    // Cap pagination so profile loads stay responsive: exact counts in the
-    // thousands don't matter for display (the AppView caps too). 5 pages = 500.
-    countRecords(
-      {repo: did, collection: 'app.bsky.graph.follow', maxPages: 5},
-      signal,
-    ).catch(() => undefined),
-    countRecords(
-      {repo: did, collection: 'app.bsky.feed.post', maxPages: 5},
-      signal,
-    ).catch(() => undefined),
+    // Pre-computed counts the AppView already has; only these fields are read.
+    agent
+      ? agent
+          .getProfile({actor: did})
+          .then(r => ({
+            postsCount: r.data.postsCount,
+            followsCount: r.data.followsCount,
+          }))
+          .catch(() => undefined)
+      : Promise.resolve(undefined),
   ])
 
   const profile = recordRes?.value as AppBskyActorProfile.Record | undefined
@@ -242,8 +241,8 @@ export async function hydrateProfile(
     avatar: cdnUrl('avatar', did, profile?.avatar),
     banner: cdnUrl('banner', did, profile?.banner),
     followersCount: followers?.total,
-    followsCount: follows?.count,
-    postsCount: posts?.count,
+    followsCount: counts?.followsCount,
+    postsCount: counts?.postsCount,
     labels: extractSelfLabels(did, profile),
     indexedAt: undefined,
     createdAt: profile?.createdAt,
diff --git a/src/state/queries/profile.ts b/src/state/queries/profile.ts
index 1982cef..2bc8d02 100644
--- a/src/state/queries/profile.ts
+++ b/src/state/queries/profile.ts
@@ -82,7 +82,10 @@ export function useProfileQuery({
     queryFn: async ({signal}) => {
       if (MICROCOSM_ENABLED) {
         try {
-          return await hydrateProfile(did ?? '', signal)
+          // agent is passed so the otherwise-unreproducible pre-computed counts
+          // (postsCount/followsCount) come from getProfile; everything else is
+          // microcosm-sourced.
+          return await hydrateProfile(did ?? '', signal, agent)
         } catch (e) {
           // Hydration is partial/best-effort; fall back to the AppView.
           logger.debug('microcosm hydrateProfile failed, falling back', {