diff --git a/src/model.ts b/src/model.ts
index b4d1419..f52f468 100644
--- a/src/model.ts
+++ b/src/model.ts
@@ -685,9 +685,14 @@ export class JSORMBase {
   }
 
   static url(id?: string | number): string {
-    const endpoint = this.endpoint || `/${this.jsonapiType}`
+    const isIri = (id && typeof id === 'string' && id.startsWith('/'))
+    const endpoint = (isIri) ? id : (this.endpoint || `/${this.jsonapiType}`)
     let base = `${this.fullBasePath()}${endpoint}`
 
+    if (isIri) {
+        return base;
+    }
+
     if (id) {
       base = `${base}/${id}`
     }
diff --git a/test/unit/model.test.ts b/test/unit/model.test.ts
index a4a2a54..46708eb 100644
--- a/test/unit/model.test.ts
+++ b/test/unit/model.test.ts
@@ -1391,6 +1391,18 @@ describe("Model", () => {
           "http://base.com/namespace/v1/testtype/testId"
         )
       })
+
+      it("should use IRI as resource path", () => {
+        class DefaultBaseUrl extends ApplicationRecord {
+          static baseUrl: string = "http://base.com"
+          static apiNamespace: string = "/namespace/v1"
+          static jsonapiType: string = "testtype"
+        }
+
+        expect(DefaultBaseUrl.url("/testtype/testId")).to.eq(
+          "http://base.com/namespace/v1/testtype/testId"
+        )
+      })
     })
 
     context("Base URL path generation is overridden", () => {