diff --git a/src/context.ts b/src/context.ts
index 9f717075..25ed14d7 100644
--- a/src/context.ts
+++ b/src/context.ts
@@ -32,6 +32,8 @@ export function createContext<T extends Record<string, unknown>>(
           return resolveRef.call(this, target);
         } catch {
           return target;
+        } finally {
+          this.parentId = this.ids[context];
         }
       }
 
diff --git a/src/oas/__tests__/__snapshots__/operation.test.ts.snap b/src/oas/__tests__/__snapshots__/operation.test.ts.snap
index 9dcc4f4c..6dc6bea5 100644
--- a/src/oas/__tests__/__snapshots__/operation.test.ts.snap
+++ b/src/oas/__tests__/__snapshots__/operation.test.ts.snap
@@ -580,7 +580,7 @@ Array [
               ],
               "type": "object",
               "x-stoplight": Object {
-                "id": "b3c54fc227df9",
+                "id": "d1d03adc8237d",
               },
             },
           },
@@ -603,7 +603,7 @@ Array [
               ],
               "type": "object",
               "x-stoplight": Object {
-                "id": "b3c54fc227df9",
+                "id": "d1d03adc8237d",
               },
             },
           },
@@ -743,7 +743,7 @@ Array [
               ],
               "type": "object",
               "x-stoplight": Object {
-                "id": "849b52cd05782",
+                "id": "2b4cfd51fbcde",
               },
               "xml": Object {
                 "name": "Pet",
@@ -799,7 +799,7 @@ Array [
               ],
               "type": "object",
               "x-stoplight": Object {
-                "id": "849b52cd05782",
+                "id": "2b4cfd51fbcde",
               },
               "xml": Object {
                 "name": "Pet",
@@ -1020,7 +1020,7 @@ Array [
               ],
               "type": "object",
               "x-stoplight": Object {
-                "id": "849b52cd05782",
+                "id": "2b4cfd51fbcde",
               },
               "xml": Object {
                 "name": "Pet",
@@ -1076,7 +1076,7 @@ Array [
               ],
               "type": "object",
               "x-stoplight": Object {
-                "id": "849b52cd05782",
+                "id": "2b4cfd51fbcde",
               },
               "xml": Object {
                 "name": "Pet",
@@ -1139,7 +1139,7 @@ Array [
               ],
               "type": "object",
               "x-stoplight": Object {
-                "id": "b9501a9ded2c5",
+                "id": "d1d03adc8237d",
               },
             },
           },
diff --git a/src/oas3/__fixtures__/id.json b/src/oas3/__tests__/__fixtures__/id/input.json
similarity index 100%
rename from src/oas3/__fixtures__/id.json
rename to src/oas3/__tests__/__fixtures__/id/input.json
diff --git a/src/oas3/__fixtures__/output.ts b/src/oas3/__tests__/__fixtures__/id/output.ts
similarity index 99%
rename from src/oas3/__fixtures__/output.ts
rename to src/oas3/__tests__/__fixtures__/id/output.ts
index ad23cb03..394c4137 100644
--- a/src/oas3/__fixtures__/output.ts
+++ b/src/oas3/__tests__/__fixtures__/id/output.ts
@@ -1,5 +1,5 @@
 /**
- NOTE that if any object anywhere ever has an `x-stoplight-id` on it, prefer that
+ NOTE that if any object anywhere ever has an `x-stoplight.id` on it, prefer that
  over calling the generate function.
 
  Used https://md5calc.com/hash/fnv1a32 to hash the ids.
diff --git a/src/oas3/__tests__/__fixtures__/shared-components/input.json b/src/oas3/__tests__/__fixtures__/shared-components/input.json
new file mode 100644
index 00000000..cb96f404
--- /dev/null
+++ b/src/oas3/__tests__/__fixtures__/shared-components/input.json
@@ -0,0 +1,66 @@
+{
+  "x-stoplight": {
+    "id": "service_abc"
+  },
+  "openapi": "3.0.3",
+  "info": {
+    "version": "0.0.3",
+    "title": "GitHub v3 REST API",
+    "description": "GitHub's v3 REST API."
+  },
+  "paths": {
+    "/orgs/{org}/repos": {
+      "get": {
+        "summary": "Get a organization repository",
+        "responses": {
+          "403": {
+            "$ref": "#/components/responses/forbidden"
+          }
+        }
+      }
+    }
+  },
+  "components": {
+    "schemas": {
+      "basic-error": {
+        "title": "Basic Error",
+        "description": "Basic Error",
+        "type": "object",
+        "properties": {
+          "message": {
+            "type": "string"
+          }
+        }
+      },
+      "rate-limit": {
+        "title": "Rate Limit",
+        "description": "The number of allowed requests in the current period",
+        "type": "integer"
+      }
+    },
+    "headers": {
+      "X-Rate-Limit": {
+        "schema": {
+          "$ref": "#/components/schemas/rate-limit"
+        }
+      }
+    },
+    "responses": {
+      "forbidden": {
+        "headers": {
+          "X-Rate-Limit": {
+            "$ref": "#/components/headers/X-Rate-Limit"
+          }
+        },
+        "description": "Forbidden",
+        "content": {
+          "application/json": {
+            "schema": {
+              "$ref": "#/components/schemas/basic-error"
+            }
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/src/oas3/__tests__/__fixtures__/shared-components/output.ts b/src/oas3/__tests__/__fixtures__/shared-components/output.ts
new file mode 100644
index 00000000..f7cd9c0d
--- /dev/null
+++ b/src/oas3/__tests__/__fixtures__/shared-components/output.ts
@@ -0,0 +1,105 @@
+/**
+ NOTE that if any object anywhere ever has a `x-stoplight.id` on it, prefer that
+ over calling the generate function.
+ */
+export default [
+  /**
+   * The http_service
+   */
+  {
+    // hash(document id - end user needs to be able to customize this.)
+    // this example has a x-stoplight.id prop on the root though, so using that
+    id: 'service_abc',
+    version: '0.0.3',
+    name: 'GitHub v3 REST API',
+    description: "GitHub's v3 REST API.",
+  },
+
+  /**
+   * http_operation 1 of 1 (the GET operation)
+   */
+  {
+    // hash(`http_operation-${parentId}-${method}-${pathWithParamNamesEmpty}`)
+    // for pathWithParamNamesEmpty, remove all characters between {} segments
+    // closest parent with an id is the service, so ends up being...
+    // hash('http_operation-service_abc-get-/orgs/{}/repos')
+    id: '376a534068842',
+    method: 'get',
+    path: '/orgs/{org}/repos',
+    summary: 'Get a organization repository',
+    responses: [
+      {
+        // hash(`http_response-${parentId}-${response.code || response key (for shared response)}`)
+        // closest parent with an id is the operation, so ends up being...
+        // hash('http_response-service_abc-forbidden')
+        id: 'c73bfcb376d49',
+        code: '403',
+        description: 'Forbidden',
+        headers: [
+          {
+            // hash(`http_header-${parentId}-${header key}`)
+            // it's a shared header, so the closest parent is the service.
+            // hash('http_header-service_abc-X-Rate-Limit')
+            id: '96620a275464f',
+            name: 'X-Rate-Limit',
+            style: 'simple',
+            encodings: [],
+            examples: [],
+            schema: {
+              $schema: 'http://json-schema.org/draft-07/schema#',
+              // hash(`http_header-${parentId}-${header key}`)
+              // it's a shared header, so the closest parent is the service.
+              // hash('schema-service_abc-rate-limit')
+              'x-stoplight': {
+                id: '72da152ada960',
+              },
+              type: 'integer',
+              description: 'The number of allowed requests in the current period',
+              title: 'Rate Limit',
+            },
+          },
+        ],
+        contents: [
+          {
+            // hash(`http_media-${parentId}-${mediaType}`)
+            // closest parent with an id is the response, so ends up being...
+            // hash('http_media-c73bfcb376d49-application/json')
+            id: '4143bd61bfef9',
+            mediaType: 'application/json',
+            schema: {
+              $schema: 'http://json-schema.org/draft-07/schema#',
+              'x-stoplight': {
+                // hash('schema-service_abc-basic-error')
+                id: '5cbb77597a983',
+              },
+              title: 'Basic Error',
+              description: 'Basic Error',
+              type: 'object',
+              properties: {
+                message: {
+                  type: 'string',
+                },
+              },
+            },
+            examples: [],
+            encodings: [],
+          },
+        ],
+      },
+    ],
+    servers: [],
+    request: {
+      body: {
+        id: '913ab62a764b4',
+        contents: [],
+      },
+      headers: [],
+      query: [],
+      cookie: [],
+      path: [],
+    },
+    tags: [],
+    security: [],
+    extensions: {},
+  },
+];
diff --git a/src/oas3/__tests__/ids.test.ts b/src/oas3/__tests__/ids.test.ts
index 7aa3126b..583d5cbd 100644
--- a/src/oas3/__tests__/ids.test.ts
+++ b/src/oas3/__tests__/ids.test.ts
@@ -4,9 +4,14 @@ import * as path from 'path';
 import { transformOas3Operations } from '../operation';
 import { transformOas3Service } from '../service';
 
-test('should generate proper ids', async () => {
-  const document = JSON.parse(await fs.promises.readFile(path.join(__dirname, '../__fixtures__/id.json'), 'utf8'));
-  const { default: output } = await import('../__fixtures__/output');
+test.each(fs.readdirSync(path.join(__dirname, './__fixtures__')))(
+  'given %s, should generate proper ids',
+  async name => {
+    const document = JSON.parse(
+      await fs.promises.readFile(path.join(__dirname, './__fixtures__', name, 'input.json'), 'utf8'),
+    );
+    const { default: output } = await import(`./__fixtures__/${name}/output`);
 
-  expect([transformOas3Service({ document }), ...transformOas3Operations(document)]).toEqual(output);
-});
+    expect([transformOas3Service({ document }), ...transformOas3Operations(document)]).toEqual(output);
+  },
+);