diff --git a/.changeset/olive-mails-tell.md b/.changeset/olive-mails-tell.md
new file mode 100644
index 0000000000..5f82656679
--- /dev/null
+++ b/.changeset/olive-mails-tell.md
@@ -0,0 +1,6 @@
+---
+'@backstage/plugin-devtools': patch
+'@backstage/plugin-linguist': patch
+---
+
+Updated to use `fetchApi` as per [ADR013](https://backstage.io/docs/architecture-decisions/adrs-adr013)
diff --git a/.changeset/rude-sheep-jam.md b/.changeset/rude-sheep-jam.md
new file mode 100644
index 0000000000..75b0354e9c
--- /dev/null
+++ b/.changeset/rude-sheep-jam.md
@@ -0,0 +1,7 @@
+---
+'@backstage/plugin-azure-devops': minor
+---
+
+**BREAKING** The `AzureDevOpsClient` no longer requires `identityAPi` but now requires `fetchApi`.
+
+Updated to use `fetchApi` as per [ADR013](https://backstage.io/docs/architecture-decisions/adrs-adr013)
diff --git a/plugins/azure-devops/api-report.md b/plugins/azure-devops/api-report.md
index cfff4348ee..e4e2d4306f 100644
--- a/plugins/azure-devops/api-report.md
+++ b/plugins/azure-devops/api-report.md
@@ -12,8 +12,8 @@ import { BuildRunOptions } from '@backstage/plugin-azure-devops-common';
 import { DashboardPullRequest } from '@backstage/plugin-azure-devops-common';
 import { DiscoveryApi } from '@backstage/core-plugin-api';
 import { Entity } from '@backstage/catalog-model';
+import { FetchApi } from '@backstage/core-plugin-api';
 import { GitTag } from '@backstage/plugin-azure-devops-common';
-import { IdentityApi } from '@backstage/core-plugin-api';
 import { JSX as JSX_2 } from 'react';
 import { PullRequest } from '@backstage/plugin-azure-devops-common';
 import { PullRequestOptions } from '@backstage/plugin-azure-devops-common';
@@ -121,10 +121,7 @@ export const azureDevOpsApiRef: ApiRef<AzureDevOpsApi>;
 
 // @public (undocumented)
 export class AzureDevOpsClient implements AzureDevOpsApi {
-  constructor(options: {
-    discoveryApi: DiscoveryApi;
-    identityApi: IdentityApi;
-  });
+  constructor(options: { discoveryApi: DiscoveryApi; fetchApi: FetchApi });
   // (undocumented)
   getAllTeams(): Promise<Team[]>;
   // (undocumented)
diff --git a/plugins/azure-devops/src/alpha/plugin.tsx b/plugins/azure-devops/src/alpha/plugin.tsx
index 40305c1714..62d8719324 100644
--- a/plugins/azure-devops/src/alpha/plugin.tsx
+++ b/plugins/azure-devops/src/alpha/plugin.tsx
@@ -21,7 +21,7 @@ import {
   createPageExtension,
   createPlugin,
   discoveryApiRef,
-  identityApiRef,
+  fetchApiRef,
 } from '@backstage/frontend-plugin-api';
 import { azureDevOpsApiRef, AzureDevOpsClient } from '../api';
 import {
@@ -38,9 +38,12 @@ import { azurePullRequestDashboardRouteRef } from '../routes';
 export const azureDevOpsApi = createApiExtension({
   factory: createApiFactory({
     api: azureDevOpsApiRef,
-    deps: { discoveryApi: discoveryApiRef, identityApi: identityApiRef },
-    factory: ({ discoveryApi, identityApi }) =>
-      new AzureDevOpsClient({ discoveryApi, identityApi }),
+    deps: {
+      discoveryApi: discoveryApiRef,
+      fetchApi: fetchApiRef,
+    },
+    factory: ({ discoveryApi, fetchApi }) =>
+      new AzureDevOpsClient({ discoveryApi, fetchApi }),
   }),
 });
 
diff --git a/plugins/azure-devops/src/api/AzureDevOpsClient.ts b/plugins/azure-devops/src/api/AzureDevOpsClient.ts
index a10b10ff14..f5c046ef07 100644
--- a/plugins/azure-devops/src/api/AzureDevOpsClient.ts
+++ b/plugins/azure-devops/src/api/AzureDevOpsClient.ts
@@ -27,21 +27,21 @@ import {
   RepoBuildOptions,
   Team,
 } from '@backstage/plugin-azure-devops-common';
-import { DiscoveryApi, IdentityApi } from '@backstage/core-plugin-api';
+import { DiscoveryApi, FetchApi } from '@backstage/core-plugin-api';
 import { ResponseError } from '@backstage/errors';
 import { AzureDevOpsApi } from './AzureDevOpsApi';
 
 /** @public */
 export class AzureDevOpsClient implements AzureDevOpsApi {
   private readonly discoveryApi: DiscoveryApi;
-  private readonly identityApi: IdentityApi;
+  private readonly fetchApi: FetchApi;
 
   public constructor(options: {
     discoveryApi: DiscoveryApi;
-    identityApi: IdentityApi;
+    fetchApi: FetchApi;
   }) {
     this.discoveryApi = options.discoveryApi;
-    this.identityApi = options.identityApi;
+    this.fetchApi = options.fetchApi;
   }
 
   public async getRepoBuilds(
@@ -203,10 +203,7 @@ export class AzureDevOpsClient implements AzureDevOpsApi {
     const baseUrl = `${await this.discoveryApi.getBaseUrl('azure-devops')}/`;
     const url = new URL(path, baseUrl);
 
-    const { token: idToken } = await this.identityApi.getCredentials();
-    const response = await fetch(url.toString(), {
-      headers: idToken ? { Authorization: `Bearer ${idToken}` } : {},
-    });
+    const response = await this.fetchApi.fetch(url.toString());
 
     if (!response.ok) {
       throw await ResponseError.fromResponse(response);
diff --git a/plugins/azure-devops/src/plugin.ts b/plugins/azure-devops/src/plugin.ts
index 1e76c9e53a..b35f16de2d 100644
--- a/plugins/azure-devops/src/plugin.ts
+++ b/plugins/azure-devops/src/plugin.ts
@@ -26,7 +26,7 @@ import {
   createRoutableExtension,
   createComponentExtension,
   discoveryApiRef,
-  identityApiRef,
+  fetchApiRef,
 } from '@backstage/core-plugin-api';
 
 import { AzureDevOpsClient } from './api/AzureDevOpsClient';
@@ -56,9 +56,12 @@ export const azureDevOpsPlugin = createPlugin({
   apis: [
     createApiFactory({
       api: azureDevOpsApiRef,
-      deps: { discoveryApi: discoveryApiRef, identityApi: identityApiRef },
-      factory: ({ discoveryApi, identityApi }) =>
-        new AzureDevOpsClient({ discoveryApi, identityApi }),
+      deps: {
+        discoveryApi: discoveryApiRef,
+        fetchApi: fetchApiRef,
+      },
+      factory: ({ discoveryApi, fetchApi }) =>
+        new AzureDevOpsClient({ discoveryApi, fetchApi }),
     }),
   ],
 });
diff --git a/plugins/devtools/src/alpha/plugin.tsx b/plugins/devtools/src/alpha/plugin.tsx
index 746b90a50f..0420556504 100644
--- a/plugins/devtools/src/alpha/plugin.tsx
+++ b/plugins/devtools/src/alpha/plugin.tsx
@@ -22,7 +22,7 @@ import {
   createPageExtension,
   createPlugin,
   discoveryApiRef,
-  identityApiRef,
+  fetchApiRef,
 } from '@backstage/frontend-plugin-api';
 
 import { devToolsApiRef, DevToolsClient } from '../api';
@@ -37,9 +37,12 @@ import { rootRouteRef } from '../routes';
 export const devToolsApi = createApiExtension({
   factory: createApiFactory({
     api: devToolsApiRef,
-    deps: { discoveryApi: discoveryApiRef, identityApi: identityApiRef },
-    factory: ({ discoveryApi, identityApi }) =>
-      new DevToolsClient({ discoveryApi, identityApi }),
+    deps: {
+      discoveryApi: discoveryApiRef,
+      fetchApi: fetchApiRef,
+    },
+    factory: ({ discoveryApi, fetchApi }) =>
+      new DevToolsClient({ discoveryApi, fetchApi }),
   }),
 });
 
diff --git a/plugins/devtools/src/api/DevToolsClient.ts b/plugins/devtools/src/api/DevToolsClient.ts
index 0be8294b3f..e0b387a6ca 100644
--- a/plugins/devtools/src/api/DevToolsClient.ts
+++ b/plugins/devtools/src/api/DevToolsClient.ts
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { DiscoveryApi, IdentityApi } from '@backstage/core-plugin-api';
+import { DiscoveryApi, FetchApi } from '@backstage/core-plugin-api';
 import {
   ConfigInfo,
   DevToolsInfo,
@@ -25,14 +25,14 @@ import { DevToolsApi } from './DevToolsApi';
 
 export class DevToolsClient implements DevToolsApi {
   private readonly discoveryApi: DiscoveryApi;
-  private readonly identityApi: IdentityApi;
+  private readonly fetchApi: FetchApi;
 
   public constructor(options: {
     discoveryApi: DiscoveryApi;
-    identityApi: IdentityApi;
+    fetchApi: FetchApi;
   }) {
     this.discoveryApi = options.discoveryApi;
-    this.identityApi = options.identityApi;
+    this.fetchApi = options.fetchApi;
   }
 
   public async getConfig(): Promise<ConfigInfo | undefined> {
@@ -64,10 +64,7 @@ export class DevToolsClient implements DevToolsApi {
     const baseUrl = `${await this.discoveryApi.getBaseUrl('devtools')}/`;
     const url = new URL(path, baseUrl);
 
-    const { token } = await this.identityApi.getCredentials();
-    const response = await fetch(url.toString(), {
-      headers: token ? { Authorization: `Bearer ${token}` } : {},
-    });
+    const response = await this.fetchApi.fetch(url.toString());
 
     if (!response.ok) {
       throw await ResponseError.fromResponse(response);
diff --git a/plugins/devtools/src/plugin.ts b/plugins/devtools/src/plugin.ts
index df2aca3447..77a90746f1 100644
--- a/plugins/devtools/src/plugin.ts
+++ b/plugins/devtools/src/plugin.ts
@@ -19,7 +19,7 @@ import {
   createPlugin,
   createRoutableExtension,
   discoveryApiRef,
-  identityApiRef,
+  fetchApiRef,
 } from '@backstage/core-plugin-api';
 import { devToolsApiRef, DevToolsClient } from './api';
 
@@ -31,9 +31,12 @@ export const devToolsPlugin = createPlugin({
   apis: [
     createApiFactory({
       api: devToolsApiRef,
-      deps: { discoveryApi: discoveryApiRef, identityApi: identityApiRef },
-      factory: ({ discoveryApi, identityApi }) =>
-        new DevToolsClient({ discoveryApi, identityApi }),
+      deps: {
+        discoveryApi: discoveryApiRef,
+        fetchApi: fetchApiRef,
+      },
+      factory: ({ discoveryApi, fetchApi }) =>
+        new DevToolsClient({ discoveryApi, fetchApi }),
     }),
   ],
   routes: {
diff --git a/plugins/linguist/src/alpha/plugin.tsx b/plugins/linguist/src/alpha/plugin.tsx
index 36d635740f..2c47346538 100644
--- a/plugins/linguist/src/alpha/plugin.tsx
+++ b/plugins/linguist/src/alpha/plugin.tsx
@@ -20,7 +20,7 @@ import {
   createApiFactory,
   createPlugin,
   discoveryApiRef,
-  identityApiRef,
+  fetchApiRef,
 } from '@backstage/frontend-plugin-api';
 
 import { LinguistClient, linguistApiRef } from '../api';
@@ -40,9 +40,12 @@ export const entityLinguistCard = createEntityCardExtension({
 export const linguistApi = createApiExtension({
   factory: createApiFactory({
     api: linguistApiRef,
-    deps: { discoveryApi: discoveryApiRef, identityApi: identityApiRef },
-    factory: ({ discoveryApi, identityApi }) =>
-      new LinguistClient({ discoveryApi, identityApi }),
+    deps: {
+      discoveryApi: discoveryApiRef,
+      fetchApi: fetchApiRef,
+    },
+    factory: ({ discoveryApi, fetchApi }) =>
+      new LinguistClient({ discoveryApi, fetchApi }),
   }),
 });
 
diff --git a/plugins/linguist/src/api/LinguistClient.ts b/plugins/linguist/src/api/LinguistClient.ts
index 3e327ff21e..5e687a039b 100644
--- a/plugins/linguist/src/api/LinguistClient.ts
+++ b/plugins/linguist/src/api/LinguistClient.ts
@@ -14,21 +14,21 @@
  * limitations under the License.
  */
 
-import { DiscoveryApi, IdentityApi } from '@backstage/core-plugin-api';
+import { DiscoveryApi, FetchApi } from '@backstage/core-plugin-api';
 import { ResponseError } from '@backstage/errors';
 import { Languages } from '@backstage/plugin-linguist-common';
 import { LinguistApi } from './LinguistApi';
 
 export class LinguistClient implements LinguistApi {
   private readonly discoveryApi: DiscoveryApi;
-  private readonly identityApi: IdentityApi;
+  private readonly fetchApi: FetchApi;
 
   public constructor(options: {
     discoveryApi: DiscoveryApi;
-    identityApi: IdentityApi;
+    fetchApi: FetchApi;
   }) {
     this.discoveryApi = options.discoveryApi;
-    this.identityApi = options.identityApi;
+    this.fetchApi = options.fetchApi;
   }
 
   public async getLanguages(entityRef: string): Promise<Languages> {
@@ -45,10 +45,7 @@ export class LinguistClient implements LinguistApi {
     const baseUrl = `${await this.discoveryApi.getBaseUrl('linguist')}/`;
     const url = new URL(path, baseUrl);
 
-    const { token } = await this.identityApi.getCredentials();
-    const response = await fetch(url.toString(), {
-      headers: token ? { Authorization: `Bearer ${token}` } : {},
-    });
+    const response = await this.fetchApi.fetch(url.toString());
 
     if (!response.ok) {
       throw await ResponseError.fromResponse(response);
diff --git a/plugins/linguist/src/plugin.ts b/plugins/linguist/src/plugin.ts
index 917a13ca9a..11f74a381c 100644
--- a/plugins/linguist/src/plugin.ts
+++ b/plugins/linguist/src/plugin.ts
@@ -19,7 +19,7 @@ import {
   createComponentExtension,
   createPlugin,
   discoveryApiRef,
-  identityApiRef,
+  fetchApiRef,
 } from '@backstage/core-plugin-api';
 import { linguistApiRef, LinguistClient } from './api';
 import { LINGUIST_ANNOTATION } from '@backstage/plugin-linguist-common';
@@ -35,9 +35,12 @@ export const linguistPlugin = createPlugin({
   apis: [
     createApiFactory({
       api: linguistApiRef,
-      deps: { discoveryApi: discoveryApiRef, identityApi: identityApiRef },
-      factory: ({ discoveryApi, identityApi }) =>
-        new LinguistClient({ discoveryApi, identityApi }),
+      deps: {
+        discoveryApi: discoveryApiRef,
+        fetchApi: fetchApiRef,
+      },
+      factory: ({ discoveryApi, fetchApi }) =>
+        new LinguistClient({ discoveryApi, fetchApi }),
     }),
   ],
 });