diff --git a/src/observations/observations.controller.ts b/src/observations/observations.controller.ts
new file mode 100644
index 0000000..55e5bed
--- /dev/null
+++ b/src/observations/observations.controller.ts
@@ -0,0 +1,24 @@
+import { Body, Controller, Get, Post, Query } from '@nestjs/common';
+import { CurrentSession } from '../auth/session.decorator';
+import type { AuthenticatedSession } from '../auth/tenant.guard';
+import { CreateObservationDto } from './dto';
+import { ObservationsService } from './observations.service';
+
+@Controller('observations')
+export class ObservationsController {
+  constructor(private readonly observationsService: ObservationsService) {}
+
+  @Get()
+  list(
+    @CurrentSession() session: AuthenticatedSession,
+    @Query('subjectType') subjectType?: string,
+    @Query('subjectId') subjectId?: string,
+  ) {
+    return this.observationsService.list(session, subjectType, subjectId);
+  }
+
+  @Post()
+  create(@CurrentSession() session: AuthenticatedSession, @Body() dto: CreateObservationDto) {
+    return this.observationsService.create(session, dto);
+  }
+}