diff --git a/app/s3df/__init__.py b/app/s3df/__init__.py
index 8fae7f20..af035aea 100644
--- a/app/s3df/__init__.py
+++ b/app/s3df/__init__.py
@@ -6,6 +6,8 @@
 """
 
 from .account_adapter import S3DFAccountAdapter
+from .facility_adapter import S3DFFacilityAdapter
+from .compute_adapter import SLACComputeAdapter
 from .config import settings
 
-__all__ = ["S3DFAccountAdapter", "settings"]
+__all__ = ["S3DFAccountAdapter", "S3DFFacilityAdapter", "SLACComputeAdapter", "settings"]
diff --git a/app/s3df/facility_adapter.py b/app/s3df/facility_adapter.py
new file mode 100644
index 00000000..3f3cb2b7
--- /dev/null
+++ b/app/s3df/facility_adapter.py
@@ -0,0 +1,89 @@
+"""
+S3DF Facility Adapter — static facility and site metadata for SLAC/S3DF.
+
+The /facility endpoints are unauthenticated and return static data describing
+SLAC National Accelerator Laboratory and the S3DF computing facility.
+"""
+
+import datetime
+
+from fastapi import HTTPException
+
+from app.routers.facility import models as facility_models
+from app.routers.facility import facility_adapter
+import uuid
+
+
+class S3DFFacilityAdapter(facility_adapter.FacilityAdapter):
+    """Returns static facility/site metadata for SLAC S3DF."""
+
+    def __init__(self):
+        now = datetime.datetime.now(datetime.timezone.utc)
+
+        self.site = facility_models.Site(
+            id=str(uuid.uuid4()),
+            name="SLAC National Accelerator Laboratory",          
+            description="We explore how the universe works at the biggest, smallest and fastest scales and invent powerful tools used by scientists around the globe. Our research helps solve real-world problems and advances the interests of the nation.",   
+            last_modified=now,
+            short_name="SLAC",
+            operating_organization="SLAC National Accelerator Laboratory",  
+            country_name="United States",
+            locality_name="Menlo Park",           
+            state_or_province_name="California",
+            street_address="2575 Sand Hill Road",          
+            latitude=37.419245954174606,              
+            longitude=-122.20446351561414,             
+            resource_ids=[],           
+        )
+
+        self.facility = facility_models.Facility(
+            id=str(uuid.uuid4()),
+            name="SLAC Shared Science Data Facility",                 
+            description="S3DF is a compute, storage, and network architecture designed to support massive scale analytics required by SLAC experimental facilities and programs, including LCLS/LCLS-II, Vera C. Rubin Observatory, UED, and the Stanford-SLAC cryoEM Center (S2C2)", 
+            last_modified=now,
+            short_name="S3DF",           
+            organization_name="S3DF",   
+            support_uri="https://s3df.slac.stanford.edu",
+            self_uri="https://s3df-dev.slac.stanford.edu/api/v1/facility",        
+            site_ids=[self.site.id],
+        )
+
+    async def get_facility(self, modified_since: str | None = None) -> facility_models.Facility | None:
+        if modified_since:
+            ms = datetime.datetime.fromisoformat(str(modified_since))
+            if self.facility.last_modified <= ms:
+                return None
+        return self.facility
+
+    async def list_sites(
+        self,
+        modified_since: str | None = None,
+        name: str | None = None,
+        offset: int | None = None,
+        limit: int | None = None,
+        short_name: str | None = None,
+    ) -> list[facility_models.Site]:
+        sites = [self.site]
+
+        if name:
+            sites = [s for s in sites if name.lower() in s.name.lower()]
+        if short_name:
+            sites = [s for s in sites if s.short_name == short_name]
+        if modified_since:
+            ms = datetime.datetime.fromisoformat(str(modified_since))
+            sites = [s for s in sites if s.last_modified > ms]
+
+        o = offset or 0
+        l = limit or len(sites)
+        return sites[o : o + l]
+
+    async def get_site(self, site_id: str, modified_since: str | None = None) -> facility_models.Site | None:
+        if site_id != self.site.id:
+            return None
+
+        if modified_since:
+            ms = datetime.datetime.fromisoformat(str(modified_since))
+            if self.site.last_modified <= ms:
+                raise HTTPException(status_code=304, headers={"Last-Modified": self.site.last_modified.isoformat()})
+
+        return self.site