diff --git a/README.md b/README.md
index 8abe1db..ba48e11 100644
--- a/README.md
+++ b/README.md
@@ -56,10 +56,13 @@ Orchard is a centralized binary artifact storage system that provides content-ad
 | `POST` | `/api/v1/project/:project/:package/upload` | Upload an artifact |
 | `GET` | `/api/v1/project/:project/:package/+/:ref` | Download an artifact (supports Range header) |
 | `HEAD` | `/api/v1/project/:project/:package/+/:ref` | Get artifact metadata without downloading |
-| `GET` | `/api/v1/project/:project/:package/tags` | List all tags |
+| `GET` | `/api/v1/project/:project/:package/tags` | List tags (with pagination, search, sorting, artifact metadata) |
 | `POST` | `/api/v1/project/:project/:package/tags` | Create a tag |
+| `GET` | `/api/v1/project/:project/:package/tags/:tag_name` | Get single tag with artifact metadata |
+| `GET` | `/api/v1/project/:project/:package/tags/:tag_name/history` | Get tag change history |
+| `GET` | `/api/v1/project/:project/:package/artifacts` | List artifacts in package (with filtering) |
 | `GET` | `/api/v1/project/:project/:package/consumers` | List consumers of a package |
-| `GET` | `/api/v1/artifact/:id` | Get artifact metadata by hash |
+| `GET` | `/api/v1/artifact/:id` | Get artifact metadata with referencing tags |
 
 #### Resumable Upload Endpoints
 
@@ -290,12 +293,119 @@ curl -X POST http://localhost:8080/api/v1/project/my-project/releases/tags \
   -d '{"name": "stable", "artifact_id": "a3f5d8e12b4c6789..."}'
 ```
 
+### List Tags
+
+```bash
+# Basic listing with artifact metadata
+curl http://localhost:8080/api/v1/project/my-project/releases/tags
+
+# With pagination
+curl "http://localhost:8080/api/v1/project/my-project/releases/tags?page=1&limit=10"
+
+# Search by tag name
+curl "http://localhost:8080/api/v1/project/my-project/releases/tags?search=v1"
+
+# Sort by created_at descending
+curl "http://localhost:8080/api/v1/project/my-project/releases/tags?sort=created_at&order=desc"
+```
+
+Response includes artifact metadata:
+```json
+{
+  "items": [
+    {
+      "id": "uuid",
+      "package_id": "uuid",
+      "name": "v1.0.0",
+      "artifact_id": "a3f5d8e...",
+      "created_at": "2025-01-01T00:00:00Z",
+      "created_by": "user",
+      "artifact_size": 1048576,
+      "artifact_content_type": "application/gzip",
+      "artifact_original_name": "app-v1.0.0.tar.gz",
+      "artifact_created_at": "2025-01-01T00:00:00Z",
+      "artifact_format_metadata": {}
+    }
+  ],
+  "pagination": {"page": 1, "limit": 20, "total": 1, "total_pages": 1}
+}
+```
+
+### Get Single Tag
+
+```bash
+curl http://localhost:8080/api/v1/project/my-project/releases/tags/v1.0.0
+```
+
+### Get Tag History
+
+```bash
+curl http://localhost:8080/api/v1/project/my-project/releases/tags/latest/history
+```
+
+Returns list of artifact changes for the tag (most recent first).
+
+### List Artifacts in Package
+
+```bash
+# Basic listing
+curl http://localhost:8080/api/v1/project/my-project/releases/artifacts
+
+# Filter by content type
+curl "http://localhost:8080/api/v1/project/my-project/releases/artifacts?content_type=application/gzip"
+
+# Filter by date range
+curl "http://localhost:8080/api/v1/project/my-project/releases/artifacts?created_after=2025-01-01T00:00:00Z"
+```
+
+Response includes tags pointing to each artifact:
+```json
+{
+  "items": [
+    {
+      "id": "a3f5d8e...",
+      "size": 1048576,
+      "content_type": "application/gzip",
+      "original_name": "app-v1.0.0.tar.gz",
+      "created_at": "2025-01-01T00:00:00Z",
+      "created_by": "user",
+      "format_metadata": {},
+      "tags": ["v1.0.0", "latest", "stable"]
+    }
+  ],
+  "pagination": {"page": 1, "limit": 20, "total": 1, "total_pages": 1}
+}
+```
+
 ### Get Artifact by ID
 
 ```bash
 curl http://localhost:8080/api/v1/artifact/a3f5d8e12b4c67890abcdef1234567890abcdef1234567890abcdef12345678
 ```
 
+Response includes all tags/packages referencing the artifact:
+```json
+{
+  "id": "a3f5d8e...",
+  "size": 1048576,
+  "content_type": "application/gzip",
+  "original_name": "app-v1.0.0.tar.gz",
+  "created_at": "2025-01-01T00:00:00Z",
+  "created_by": "user",
+  "ref_count": 2,
+  "format_metadata": {},
+  "tags": [
+    {
+      "id": "uuid",
+      "name": "v1.0.0",
+      "package_id": "uuid",
+      "package_name": "releases",
+      "project_name": "my-project"
+    }
+  ]
+}
+```
+
 ## Project Structure
 
 ```
diff --git a/backend/app/routes.py b/backend/app/routes.py
index ab012a8..711225c 100644
--- a/backend/app/routes.py
+++ b/backend/app/routes.py
@@ -1,3 +1,4 @@
+from datetime import datetime
 from fastapi import APIRouter, Depends, HTTPException, UploadFile, File, Form, Request, Query, Header, Response
 from fastapi.responses import StreamingResponse
 from sqlalchemy.orm import Session
@@ -10,13 +11,13 @@ import hashlib
 
 from .database import get_db
 from .storage import get_storage, S3Storage, MULTIPART_CHUNK_SIZE
-from .models import Project, Package, Artifact, Tag, Upload, Consumer
+from .models import Project, Package, Artifact, Tag, TagHistory, Upload, Consumer
 from .schemas import (
     ProjectCreate, ProjectResponse,
     PackageCreate, PackageResponse, PackageDetailResponse, TagSummary,
     PACKAGE_FORMATS, PACKAGE_PLATFORMS,
-    ArtifactResponse,
-    TagCreate, TagResponse,
+    ArtifactResponse, ArtifactDetailResponse, ArtifactTagInfo, PackageArtifactResponse,
+    TagCreate, TagResponse, TagDetailResponse, TagHistoryResponse,
     UploadResponse,
     ConsumerResponse,
     HealthResponse,
@@ -850,8 +851,17 @@ def download_artifact_compat(
 
 
 # Tag routes
-@router.get("/api/v1/project/{project_name}/{package_name}/tags", response_model=List[TagResponse])
-def list_tags(project_name: str, package_name: str, db: Session = Depends(get_db)):
+@router.get("/api/v1/project/{project_name}/{package_name}/tags", response_model=PaginatedResponse[TagDetailResponse])
+def list_tags(
+    project_name: str,
+    package_name: str,
+    page: int = Query(default=1, ge=1, description="Page number"),
+    limit: int = Query(default=20, ge=1, le=100, description="Items per page"),
+    search: Optional[str] = Query(default=None, description="Search by tag name"),
+    sort: str = Query(default="name", description="Sort field (name, created_at)"),
+    order: str = Query(default="asc", description="Sort order (asc, desc)"),
+    db: Session = Depends(get_db),
+):
     project = db.query(Project).filter(Project.name == project_name).first()
     if not project:
         raise HTTPException(status_code=404, detail="Project not found")
@@ -860,8 +870,65 @@ def list_tags(project_name: str, package_name: str, db: Session = Depends(get_db
     if not package:
         raise HTTPException(status_code=404, detail="Package not found")
 
-    tags = db.query(Tag).filter(Tag.package_id == package.id).order_by(Tag.name).all()
-    return tags
+    # Validate sort field
+    valid_sort_fields = {"name": Tag.name, "created_at": Tag.created_at}
+    if sort not in valid_sort_fields:
+        raise HTTPException(status_code=400, detail=f"Invalid sort field. Must be one of: {', '.join(valid_sort_fields.keys())}")
+
+    # Validate order
+    if order not in ("asc", "desc"):
+        raise HTTPException(status_code=400, detail="Invalid order. Must be 'asc' or 'desc'")
+
+    # Base query with JOIN to artifact for metadata
+    query = db.query(Tag, Artifact).join(Artifact, Tag.artifact_id == Artifact.id).filter(Tag.package_id == package.id)
+
+    # Apply search filter (case-insensitive on tag name)
+    if search:
+        query = query.filter(func.lower(Tag.name).contains(search.lower()))
+
+    # Get total count before pagination
+    total = query.count()
+
+    # Apply sorting
+    sort_column = valid_sort_fields[sort]
+    if order == "desc":
+        query = query.order_by(sort_column.desc())
+    else:
+        query = query.order_by(sort_column.asc())
+
+    # Apply pagination
+    offset = (page - 1) * limit
+    results = query.offset(offset).limit(limit).all()
+
+    # Calculate total pages
+    total_pages = math.ceil(total / limit) if total > 0 else 1
+
+    # Build detailed responses with artifact metadata
+    detailed_tags = []
+    for tag, artifact in results:
+        detailed_tags.append(TagDetailResponse(
+            id=tag.id,
+            package_id=tag.package_id,
+            name=tag.name,
+            artifact_id=tag.artifact_id,
+            created_at=tag.created_at,
+            created_by=tag.created_by,
+            artifact_size=artifact.size,
+            artifact_content_type=artifact.content_type,
+            artifact_original_name=artifact.original_name,
+            artifact_created_at=artifact.created_at,
+            artifact_format_metadata=artifact.format_metadata,
+        ))
+
+    return PaginatedResponse(
+        items=detailed_tags,
+        pagination=PaginationMeta(
+            page=page,
+            limit=limit,
+            total=total,
+            total_pages=total_pages,
+        ),
+    )
 
 
 @router.post("/api/v1/project/{project_name}/{package_name}/tags", response_model=TagResponse)
@@ -908,6 +975,70 @@ def create_tag(
     return db_tag
 
 
+@router.get("/api/v1/project/{project_name}/{package_name}/tags/{tag_name}", response_model=TagDetailResponse)
+def get_tag(
+    project_name: str,
+    package_name: str,
+    tag_name: str,
+    db: Session = Depends(get_db),
+):
+    """Get a single tag with full artifact metadata"""
+    project = db.query(Project).filter(Project.name == project_name).first()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+
+    package = db.query(Package).filter(Package.project_id == project.id, Package.name == package_name).first()
+    if not package:
+        raise HTTPException(status_code=404, detail="Package not found")
+
+    result = db.query(Tag, Artifact).join(Artifact, Tag.artifact_id == Artifact.id).filter(
+        Tag.package_id == package.id,
+        Tag.name == tag_name
+    ).first()
+
+    if not result:
+        raise HTTPException(status_code=404, detail="Tag not found")
+
+    tag, artifact = result
+    return TagDetailResponse(
+        id=tag.id,
+        package_id=tag.package_id,
+        name=tag.name,
+        artifact_id=tag.artifact_id,
+        created_at=tag.created_at,
+        created_by=tag.created_by,
+        artifact_size=artifact.size,
+        artifact_content_type=artifact.content_type,
+        artifact_original_name=artifact.original_name,
+        artifact_created_at=artifact.created_at,
+        artifact_format_metadata=artifact.format_metadata,
+    )
+
+
+@router.get("/api/v1/project/{project_name}/{package_name}/tags/{tag_name}/history", response_model=List[TagHistoryResponse])
+def get_tag_history(
+    project_name: str,
+    package_name: str,
+    tag_name: str,
+    db: Session = Depends(get_db),
+):
+    """Get the history of artifact assignments for a tag"""
+    project = db.query(Project).filter(Project.name == project_name).first()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+
+    package = db.query(Package).filter(Package.project_id == project.id, Package.name == package_name).first()
+    if not package:
+        raise HTTPException(status_code=404, detail="Package not found")
+
+    tag = db.query(Tag).filter(Tag.package_id == package.id, Tag.name == tag_name).first()
+    if not tag:
+        raise HTTPException(status_code=404, detail="Tag not found")
+
+    history = db.query(TagHistory).filter(TagHistory.tag_id == tag.id).order_by(TagHistory.changed_at.desc()).all()
+    return history
+
+
 # Consumer routes
 @router.get("/api/v1/project/{project_name}/{package_name}/consumers", response_model=List[ConsumerResponse])
 def get_consumers(project_name: str, package_name: str, db: Session = Depends(get_db)):
@@ -923,10 +1054,122 @@ def get_consumers(project_name: str, package_name: str, db: Session = Depends(ge
     return consumers
 
 
+# Package artifacts
+@router.get("/api/v1/project/{project_name}/{package_name}/artifacts", response_model=PaginatedResponse[PackageArtifactResponse])
+def list_package_artifacts(
+    project_name: str,
+    package_name: str,
+    page: int = Query(default=1, ge=1, description="Page number"),
+    limit: int = Query(default=20, ge=1, le=100, description="Items per page"),
+    content_type: Optional[str] = Query(default=None, description="Filter by content type"),
+    created_after: Optional[datetime] = Query(default=None, description="Filter artifacts created after this date"),
+    created_before: Optional[datetime] = Query(default=None, description="Filter artifacts created before this date"),
+    db: Session = Depends(get_db),
+):
+    """List all unique artifacts uploaded to a package"""
+    project = db.query(Project).filter(Project.name == project_name).first()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+
+    package = db.query(Package).filter(Package.project_id == project.id, Package.name == package_name).first()
+    if not package:
+        raise HTTPException(status_code=404, detail="Package not found")
+
+    # Get distinct artifacts uploaded to this package via uploads table
+    artifact_ids_subquery = db.query(func.distinct(Upload.artifact_id)).filter(
+        Upload.package_id == package.id
+    ).subquery()
+
+    query = db.query(Artifact).filter(Artifact.id.in_(artifact_ids_subquery))
+
+    # Apply content_type filter
+    if content_type:
+        query = query.filter(Artifact.content_type == content_type)
+
+    # Apply date range filters
+    if created_after:
+        query = query.filter(Artifact.created_at >= created_after)
+    if created_before:
+        query = query.filter(Artifact.created_at <= created_before)
+
+    # Get total count before pagination
+    total = query.count()
+
+    # Apply pagination
+    offset = (page - 1) * limit
+    artifacts = query.order_by(Artifact.created_at.desc()).offset(offset).limit(limit).all()
+
+    # Calculate total pages
+    total_pages = math.ceil(total / limit) if total > 0 else 1
+
+    # Build responses with tag info
+    artifact_responses = []
+    for artifact in artifacts:
+        # Get tags pointing to this artifact in this package
+        tags = db.query(Tag.name).filter(
+            Tag.package_id == package.id,
+            Tag.artifact_id == artifact.id
+        ).all()
+        tag_names = [t.name for t in tags]
+
+        artifact_responses.append(PackageArtifactResponse(
+            id=artifact.id,
+            size=artifact.size,
+            content_type=artifact.content_type,
+            original_name=artifact.original_name,
+            created_at=artifact.created_at,
+            created_by=artifact.created_by,
+            format_metadata=artifact.format_metadata,
+            tags=tag_names,
+        ))
+
+    return PaginatedResponse(
+        items=artifact_responses,
+        pagination=PaginationMeta(
+            page=page,
+            limit=limit,
+            total=total,
+            total_pages=total_pages,
+        ),
+    )
+
+
 # Artifact by ID
-@router.get("/api/v1/artifact/{artifact_id}", response_model=ArtifactResponse)
+@router.get("/api/v1/artifact/{artifact_id}", response_model=ArtifactDetailResponse)
 def get_artifact(artifact_id: str, db: Session = Depends(get_db)):
+    """Get artifact metadata including list of packages/tags referencing it"""
     artifact = db.query(Artifact).filter(Artifact.id == artifact_id).first()
     if not artifact:
         raise HTTPException(status_code=404, detail="Artifact not found")
-    return artifact
+
+    # Get all tags referencing this artifact with package and project info
+    tags_with_context = db.query(Tag, Package, Project).join(
+        Package, Tag.package_id == Package.id
+    ).join(
+        Project, Package.project_id == Project.id
+    ).filter(
+        Tag.artifact_id == artifact_id
+    ).all()
+
+    tag_infos = [
+        ArtifactTagInfo(
+            id=tag.id,
+            name=tag.name,
+            package_id=package.id,
+            package_name=package.name,
+            project_name=project.name,
+        )
+        for tag, package, project in tags_with_context
+    ]
+
+    return ArtifactDetailResponse(
+        id=artifact.id,
+        size=artifact.size,
+        content_type=artifact.content_type,
+        original_name=artifact.original_name,
+        created_at=artifact.created_at,
+        created_by=artifact.created_by,
+        ref_count=artifact.ref_count,
+        format_metadata=artifact.format_metadata,
+        tags=tag_infos,
+    )
diff --git a/backend/app/schemas.py b/backend/app/schemas.py
index 837c0ce..5077646 100644
--- a/backend/app/schemas.py
+++ b/backend/app/schemas.py
@@ -129,6 +129,78 @@ class TagResponse(BaseModel):
         from_attributes = True
 
 
+class TagDetailResponse(BaseModel):
+    """Tag with embedded artifact metadata"""
+    id: UUID
+    package_id: UUID
+    name: str
+    artifact_id: str
+    created_at: datetime
+    created_by: str
+    # Artifact metadata
+    artifact_size: int
+    artifact_content_type: Optional[str]
+    artifact_original_name: Optional[str]
+    artifact_created_at: datetime
+    artifact_format_metadata: Optional[Dict[str, Any]] = None
+
+    class Config:
+        from_attributes = True
+
+
+class TagHistoryResponse(BaseModel):
+    """History entry for tag changes"""
+    id: UUID
+    tag_id: UUID
+    old_artifact_id: Optional[str]
+    new_artifact_id: str
+    changed_at: datetime
+    changed_by: str
+
+    class Config:
+        from_attributes = True
+
+
+class ArtifactTagInfo(BaseModel):
+    """Tag info for embedding in artifact responses"""
+    id: UUID
+    name: str
+    package_id: UUID
+    package_name: str
+    project_name: str
+
+
+class ArtifactDetailResponse(BaseModel):
+    """Artifact with list of tags/packages referencing it"""
+    id: str
+    size: int
+    content_type: Optional[str]
+    original_name: Optional[str]
+    created_at: datetime
+    created_by: str
+    ref_count: int
+    format_metadata: Optional[Dict[str, Any]] = None
+    tags: List[ArtifactTagInfo] = []
+
+    class Config:
+        from_attributes = True
+
+
+class PackageArtifactResponse(BaseModel):
+    """Artifact with tags for package artifact listing"""
+    id: str
+    size: int
+    content_type: Optional[str]
+    original_name: Optional[str]
+    created_at: datetime
+    created_by: str
+    format_metadata: Optional[Dict[str, Any]] = None
+    tags: List[str] = []  # Tag names pointing to this artifact
+
+    class Config:
+        from_attributes = True
+
+
 # Upload response
 class UploadResponse(BaseModel):
     artifact_id: str