@@ -173,6 +173,12 @@ jobs:
           body: "Hello, World!"
 ```
 
+You can include the current repository in the list with `${{ github.repository }}`:
+
+```yaml
+repositories: ${{ github.repository }},repo2
+```
+
 ### Create a token for all repositories in another owner's installation
 
 ```yaml
@@ -377,6 +383,8 @@ steps:
 
 > [!NOTE]
 > If `owner` is set and `repositories` is empty, access will be scoped to all repositories in the provided repository owner's installation. If `owner` and `repositories` are empty, access will be scoped to only the current repository.
+>
+> Repository entries may include an owner, for example `owner/repo1`. The owner portion must match the `owner` input, or the current repository owner if `owner` is unset.
 
 ### `enterprise`
 
 
@@ -19,7 +19,7 @@ inputs:
     description: "The owner of the GitHub App installation (defaults to current repository owner)"
     required: false
   repositories:
-    description: "Comma or newline-separated list of repositories to install the GitHub App on (defaults to current repository if owner is unset)"
+    description: "Comma or newline-separated list of repositories to grant the token access to (defaults to current repository if owner is unset)"
     required: false
   enterprise:
     description: "The slug of the enterprise account where the GitHub App is installed (cannot be used with 'owner' or 'repositories')"
 
@@ -86,29 +86,67 @@ function resolveInstallationTarget(enterprise, owner, repositories, core) {
     return { type: "owner", owner };
   }
 
-  const parsedOwner = owner || String(process.env.GITHUB_REPOSITORY_OWNER);
+  const target = normalizeRepositoryTarget(owner, repositories);
 
   if (!owner) {
     core.info(
-      `No 'owner' input provided. Using default owner '${parsedOwner}' to create token for the following repositories:${repositories
-        .map((repo) => `\n- ${parsedOwner}/${repo}`)
+      `No 'owner' input provided. Using default owner '${target.owner}' to create token for the following repositories:${target.repositories
+        .map((repo) => `\n- ${target.owner}/${repo}`)
         .join("")}`
     );
   } else {
     core.info(
-      `Inputs 'owner' and 'repositories' are set. Creating token for the following repositories:${repositories
-        .map((repo) => `\n- ${parsedOwner}/${repo}`)
+      `Inputs 'owner' and 'repositories' are set. Creating token for the following repositories:${target.repositories
+        .map((repo) => `\n- ${target.owner}/${repo}`)
         .join("")}`
     );
   }
 
   return {
     type: "repository",
+    owner: target.owner,
+    repositories: target.repositories,
+  };
+}
+
+function normalizeRepositoryTarget(owner, repositories) {
+  const parsedOwner = owner || String(process.env.GITHUB_REPOSITORY_OWNER);
+  const parsedRepositories = repositories.map(parseRepositoryInput);
+
+  const mismatchedRepository = parsedRepositories.find(
+    (repository) =>
+      repository.owner &&
+      repository.owner.toLowerCase() !== parsedOwner.toLowerCase()
+  );
+
+  if (mismatchedRepository) {
+    throw new Error(
+      `Repository '${mismatchedRepository.input}' includes owner '${mismatchedRepository.owner}', which does not match the resolved owner '${parsedOwner}'.`
+    );
+  }
+
+  return {
     owner: parsedOwner,
-    repositories,
+    repositories: parsedRepositories.map((repository) => repository.name),
   };
 }
 
+function parseRepositoryInput(input) {
+  const parts = input.split("/");
+
+  if (parts.length === 1 && parts[0]) {
+    return { input, owner: "", name: parts[0] };
+  }
+
+  if (parts.length === 2 && parts[0] && parts[1]) {
+    return { input, owner: parts[0], name: parts[1] };
+  }
+
+  throw new Error(
+    `Invalid repository '${input}'. Expected 'repository' or 'owner/repository'.`
+  );
+}
+
 function getTokenRetryDescription(target) {
   switch (target.type) {
     case "enterprise":
 
@@ -296,6 +296,42 @@ POST /app/installations/123456/access_tokens
 {"repositories":["failed-repo"]}
 `;
 
+exports[`main-token-get-owner-set-repo-full-name.test.js > stdout 1`] = `
+Inputs 'owner' and 'repositories' are set. Creating token for the following repositories:
+- actions/create-github-app-token
+::add-mask::ghs_16C7e42F292c6912E7710c838347Ae178B4a
+
+::set-output name=token::ghs_16C7e42F292c6912E7710c838347Ae178B4a
+
+::set-output name=installation-id::123456
+
+::set-output name=app-slug::github-actions
+::save-state name=token::ghs_16C7e42F292c6912E7710c838347Ae178B4a
+::save-state name=expiresAt::2016-07-11T22:14:10Z
+--- REQUESTS ---
+GET /repos/actions/create-github-app-token/installation
+POST /app/installations/123456/access_tokens
+{"repositories":["create-github-app-token"]}
+`;
+
+exports[`main-token-get-owner-set-repo-invalid-format.test.js > stderr 1`] = `
+Error: Invalid repository 'octocat/hello-world/extra'. Expected 'repository' or 'owner/repository'.
+    at parseRepositoryInput (file://<cwd>/lib/main.js:<line>:<column>)
+    at Array.map (<anonymous>)
+    at normalizeRepositoryTarget (file://<cwd>/lib/main.js:<line>:<column>)
+    at resolveInstallationTarget (file://<cwd>/lib/main.js:<line>:<column>)
+    at main (file://<cwd>/lib/main.js:<line>:<column>)
+    at run (file://<cwd>/main.js:<line>:<column>)
+    at file://<cwd>/main.js:<line>:<column>
+    at ModuleJob.run (node:internal/modules/esm/module_job:<line>:<column>)
+    at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:<line>:<column>)
+    at async file://<cwd>/tests/main-token-get-owner-set-repo-invalid-format.test.js:<line>:<column>
+`;
+
+exports[`main-token-get-owner-set-repo-invalid-format.test.js > stdout 1`] = `
+::error::Invalid repository 'octocat/hello-world/extra'. Expected 'repository' or 'owner/repository'.
+`;
+
 exports[`main-token-get-owner-set-repo-network-error.test.js > stdout 1`] = `
 Inputs 'owner' and 'repositories' are set. Creating token for the following repositories:
 - actions/network-repo
@@ -316,6 +352,41 @@ POST /app/installations/123456/access_tokens
 {"repositories":["network-repo"]}
 `;
 
+exports[`main-token-get-owner-set-repo-non-current-full-name.test.js > stdout 1`] = `
+Inputs 'owner' and 'repositories' are set. Creating token for the following repositories:
+- actions/toolkit
+- actions/checkout
+::add-mask::ghs_16C7e42F292c6912E7710c838347Ae178B4a
+
+::set-output name=token::ghs_16C7e42F292c6912E7710c838347Ae178B4a
+
+::set-output name=installation-id::123456
+
+::set-output name=app-slug::github-actions
+::save-state name=token::ghs_16C7e42F292c6912E7710c838347Ae178B4a
+::save-state name=expiresAt::2016-07-11T22:14:10Z
+--- REQUESTS ---
+GET /repos/actions/toolkit/installation
+POST /app/installations/123456/access_tokens
+{"repositories":["toolkit","checkout"]}
+`;
+
+exports[`main-token-get-owner-set-repo-owner-mismatch.test.js > stderr 1`] = `
+Error: Repository 'octocat/hello-world' includes owner 'octocat', which does not match the resolved owner 'actions'.
+    at normalizeRepositoryTarget (file://<cwd>/lib/main.js:<line>:<column>)
+    at resolveInstallationTarget (file://<cwd>/lib/main.js:<line>:<column>)
+    at main (file://<cwd>/lib/main.js:<line>:<column>)
+    at run (file://<cwd>/main.js:<line>:<column>)
+    at file://<cwd>/main.js:<line>:<column>
+    at ModuleJob.run (node:internal/modules/esm/module_job:<line>:<column>)
+    at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:<line>:<column>)
+    at async file://<cwd>/tests/main-token-get-owner-set-repo-owner-mismatch.test.js:<line>:<column>
+`;
+
+exports[`main-token-get-owner-set-repo-owner-mismatch.test.js > stdout 1`] = `
+::error::Repository 'octocat/hello-world' includes owner 'octocat', which does not match the resolved owner 'actions'.
+`;
+
 exports[`main-token-get-owner-set-repo-set-to-many-newline.test.js > stdout 1`] = `
 Inputs 'owner' and 'repositories' are set. Creating token for the following repositories:
 - actions/create-github-app-token
@@ -391,6 +462,41 @@ POST /app/installations/123456/access_tokens
 null
 `;
 
+exports[`main-token-get-owner-unset-repo-full-name-and-bare.test.js > stdout 1`] = `
+No 'owner' input provided. Using default owner 'actions' to create token for the following repositories:
+- actions/create-github-app-token
+- actions/toolkit
+::add-mask::ghs_16C7e42F292c6912E7710c838347Ae178B4a
+
+::set-output name=token::ghs_16C7e42F292c6912E7710c838347Ae178B4a
+
+::set-output name=installation-id::123456
+
+::set-output name=app-slug::github-actions
+::save-state name=token::ghs_16C7e42F292c6912E7710c838347Ae178B4a
+::save-state name=expiresAt::2016-07-11T22:14:10Z
+--- REQUESTS ---
+GET /repos/actions/create-github-app-token/installation
+POST /app/installations/123456/access_tokens
+{"repositories":["create-github-app-token","toolkit"]}
+`;
+
+exports[`main-token-get-owner-unset-repo-owner-mismatch.test.js > stderr 1`] = `
+Error: Repository 'octocat/hello-world' includes owner 'octocat', which does not match the resolved owner 'actions'.
+    at normalizeRepositoryTarget (file://<cwd>/lib/main.js:<line>:<column>)
+    at resolveInstallationTarget (file://<cwd>/lib/main.js:<line>:<column>)
+    at main (file://<cwd>/lib/main.js:<line>:<column>)
+    at run (file://<cwd>/main.js:<line>:<column>)
+    at file://<cwd>/main.js:<line>:<column>
+    at ModuleJob.run (node:internal/modules/esm/module_job:<line>:<column>)
+    at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:<line>:<column>)
+    at async file://<cwd>/tests/main-token-get-owner-unset-repo-owner-mismatch.test.js:<line>:<column>
+`;
+
+exports[`main-token-get-owner-unset-repo-owner-mismatch.test.js > stdout 1`] = `
+::error::Repository 'octocat/hello-world' includes owner 'octocat', which does not match the resolved owner 'actions'.
+`;
+
 exports[`main-token-get-owner-unset-repo-set.test.js > stdout 1`] = `
 No 'owner' input provided. Using default owner 'actions' to create token for the following repositories:
 - actions/create-github-app-token
 
@@ -0,0 +1,8 @@
+import { test } from "./main.js";
+
+// Verify `main` successfully obtains a token when the `owner` and `repositories` inputs are set, and `repositories` contains a full repository name.
+await test(() => {
+  process.env.INPUT_OWNER = process.env.GITHUB_REPOSITORY_OWNER;
+  process.env.INPUT_REPOSITORIES = process.env.GITHUB_REPOSITORY;
+});
+
@@ -0,0 +1,13 @@
+import { DEFAULT_ENV } from "./main.js";
+
+// Verify `main` exits with an error when a repository entry is neither a repository name nor an owner/repository name.
+for (const [key, value] of Object.entries(DEFAULT_ENV)) {
+  process.env[key] = value;
+}
+
+process.env.INPUT_OWNER = process.env.GITHUB_REPOSITORY_OWNER;
+process.env.INPUT_REPOSITORIES = "octocat/hello-world/extra";
+
+const { default: promise } = await import("../main.js");
+await promise;
+
@@ -0,0 +1,12 @@
+import { DEFAULT_ENV, test } from "./main.js";
+
+// Verify `main` normalizes full repository names before installation lookup and token scoping.
+await test(
+  () => {},
+  {
+    ...DEFAULT_ENV,
+    INPUT_OWNER: DEFAULT_ENV.GITHUB_REPOSITORY_OWNER,
+    INPUT_REPOSITORIES: `${DEFAULT_ENV.GITHUB_REPOSITORY_OWNER}/toolkit,checkout`,
+  },
+);
+
@@ -0,0 +1,13 @@
+import { DEFAULT_ENV } from "./main.js";
+
+// Verify `main` exits with an error when a full repository name does not match the `owner` input.
+for (const [key, value] of Object.entries(DEFAULT_ENV)) {
+  process.env[key] = value;
+}
+
+process.env.INPUT_OWNER = process.env.GITHUB_REPOSITORY_OWNER;
+process.env.INPUT_REPOSITORIES = "octocat/hello-world";
+
+const { default: promise } = await import("../main.js");
+await promise;
+
@@ -0,0 +1,8 @@
+import { test } from "./main.js";
+
+// Verify `main` successfully obtains a token when `owner` is omitted and `repositories` mixes a full repository name with bare repository names.
+await test(() => {
+  delete process.env.INPUT_OWNER;
+  process.env.INPUT_REPOSITORIES = `${process.env.GITHUB_REPOSITORY},toolkit`;
+});
+
@@ -0,0 +1,13 @@
+import { DEFAULT_ENV } from "./main.js";
+
+// Verify `main` exits with an error when a full repository name does not match the default owner.
+for (const [key, value] of Object.entries(DEFAULT_ENV)) {
+  process.env[key] = value;
+}
+
+delete process.env.INPUT_OWNER;
+process.env.INPUT_REPOSITORIES = "octocat/hello-world";
+
+const { default: promise } = await import("../main.js");
+await promise;
+