diff --git a/cmd/server/main.go b/cmd/server/main.go
index e590943..b7ddac6 100644
--- a/cmd/server/main.go
+++ b/cmd/server/main.go
@@ -7,12 +7,14 @@ import (
 	"Coves/internal/atproto/identity"
 	"Coves/internal/atproto/jetstream"
 	"Coves/internal/core/aggregators"
+	"Coves/internal/core/blobs"
 	"Coves/internal/core/comments"
 	"Coves/internal/core/communities"
 	"Coves/internal/core/communityFeeds"
 	"Coves/internal/core/discover"
 	"Coves/internal/core/posts"
 	"Coves/internal/core/timeline"
+	"Coves/internal/core/unfurl"
 	"Coves/internal/core/users"
 	"bytes"
 	"context"
@@ -281,9 +283,24 @@ func main() {
 	aggregatorService := aggregators.NewAggregatorService(aggregatorRepo, communityService)
 	log.Println("✅ Aggregator service initialized")
 
+	// Initialize unfurl cache repository
+	unfurlRepo := unfurl.NewRepository(db)
+
+	// Initialize blob upload service
+	blobService := blobs.NewBlobService(defaultPDS)
+
+	// Initialize unfurl service with configuration
+	unfurlService := unfurl.NewService(
+		unfurlRepo,
+		unfurl.WithTimeout(10*time.Second),
+		unfurl.WithUserAgent("CovesBot/1.0 (+https://coves.social)"),
+		unfurl.WithCacheTTL(24*time.Hour),
+	)
+	log.Println("✅ Unfurl and blob services initialized")
+
 	// Initialize post service (with aggregator support)
 	postRepo := postgresRepo.NewPostRepository(db)
-	postService := posts.NewPostService(postRepo, communityService, aggregatorService, defaultPDS)
+	postService := posts.NewPostService(postRepo, communityService, aggregatorService, blobService, unfurlService, defaultPDS)
 
 	// Initialize vote repository (used by Jetstream consumer for indexing)
 	voteRepo := postgresRepo.NewVoteRepository(db)
diff --git a/internal/core/posts/interfaces.go b/internal/core/posts/interfaces.go
index df9091a..2a07ca5 100644
--- a/internal/core/posts/interfaces.go
+++ b/internal/core/posts/interfaces.go
@@ -1,6 +1,12 @@
 package posts
 
-import "context"
+import (
+	"context"
+)
+
+// Service constructor accepts optional blobs.Service and unfurl.Service for embed enhancement.
+// When unfurlService is provided, external embeds will be automatically enriched with metadata.
+// When blobService is provided, thumbnails from unfurled URLs will be uploaded as blobs.
 
 // Service defines the business logic interface for posts
 // Coordinates between Repository, community service, and PDS
diff --git a/internal/core/posts/post.go b/internal/core/posts/post.go
index 10f8ec8..51fa4d9 100644
--- a/internal/core/posts/post.go
+++ b/internal/core/posts/post.go
@@ -50,6 +50,7 @@ type CreatePostRequest struct {
 	Title          *string                `json:"title,omitempty"`
 	Content        *string                `json:"content,omitempty"`
 	Embed          map[string]interface{} `json:"embed,omitempty"`
+	ThumbnailURL   *string                `json:"thumbnailUrl,omitempty"`
 	Labels         *SelfLabels            `json:"labels,omitempty"`
 	Community      string                 `json:"community"`
 	AuthorDID      string                 `json:"authorDid"`
@@ -121,6 +122,7 @@ type CommunityRef struct {
 	DID    string  `json:"did"`
 	Handle string  `json:"handle"`
 	Name   string  `json:"name"`
+	PDSURL string  `json:"-"` // Not exposed to API, used for blob URL transformation
 }
 
 // PostStats represents aggregated statistics