minor linting update again

- Add event name constants to reduce duplication
- Derive EntityEventName and AutomationEventName types from constants
- Use isAutomationContext consistently in agent mode and registry
- Simplify parseGitHubContext by removing redundant type assertions
- Extract payload casts to variables for cleaner code

Co-Authored-By: Claude <noreply@anthropic.com>

examples/workflow-dispatch-agent.yml

@@ -0,0 +1,40 @@
+name: Claude Commit Analysis
+
+on:
+  workflow_dispatch:
+    inputs:
+      analysis_type:
+        description: "Type of analysis to perform"
+        required: true
+        type: choice
+        options:
+          - summarize-commit
+          - security-review
+        default: "summarize-commit"
+
+jobs:
+  analyze-commit:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
+      issues: write
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 2 # Need at least 2 commits to analyze the latest
+
+      - name: Run Claude Analysis
+        uses: anthropics/claude-code-action@beta
+        with:
+          mode: agent
+          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          override_prompt: |
+            Analyze the latest commit in this repository.
+
+            ${{ github.event.inputs.analysis_type == 'summarize-commit' && 'Task: Provide a clear, concise summary of what changed in the latest commit. Include the commit message, files changed, and the purpose of the changes.' || '' }}
+
+            ${{ github.event.inputs.analysis_type == 'security-review' && 'Task: Review the latest commit for potential security vulnerabilities. Check for exposed secrets, insecure coding patterns, dependency vulnerabilities, or any other security concerns. Provide specific recommendations if issues are found.' || '' }}

src/create-prompt/index.ts

@@ -801,15 +801,18 @@ export async function createPrompt(
   context: ParsedGitHubContext,
 ) {
   try {
-    // Tag mode requires a comment ID
-    if (mode.name === "tag" && !modeContext.commentId) {
-      throw new Error("Tag mode requires a comment ID for prompt generation");
+    // Prepare the context for prompt generation
+    let claudeCommentId: string = "";
+    if (mode.name === "tag") {
+      if (!modeContext.commentId) {
+        throw new Error("Tag mode requires a comment ID for prompt generation");
+      }
+      claudeCommentId = modeContext.commentId.toString();
     }
 
-    // Prepare the context for prompt generation
     const preparedContext = prepareContext(
       context,
-      modeContext.commentId?.toString() || "",
+      claudeCommentId,
       modeContext.baseBranch,
       modeContext.claudeBranch,
     );

src/entrypoints/prepare.ts

@@ -7,17 +7,11 @@
 
 import * as core from "@actions/core";
 import { setupGitHubToken } from "../github/token";
-import { checkHumanActor } from "../github/validation/actor";
 import { checkWritePermissions } from "../github/validation/permissions";
-import { createInitialComment } from "../github/operations/comments/create-initial";
-import { setupBranch } from "../github/operations/branch";
-import { configureGitAuth } from "../github/operations/git-config";
-import { prepareMcpConfig } from "../mcp/install-mcp-server";
 import { createOctokit } from "../github/api/client";
-import { fetchGitHubData } from "../github/data/fetcher";
-import { parseGitHubContext } from "../github/context";
+import { parseGitHubContext, isEntityContext } from "../github/context";
 import { getMode } from "../modes/registry";
-import { createPrompt } from "../create-prompt";
+import { prepare } from "../prepare";
 
 async function run() {
   try {
@@ -28,19 +22,21 @@ async function run() {
     // Step 2: Parse GitHub context (once for all operations)
     const context = parseGitHubContext();
 
-    // Step 3: Check write permissions
-    const hasWritePermissions = await checkWritePermissions(
-      octokit.rest,
-      context,
-    );
-    if (!hasWritePermissions) {
-      throw new Error(
-        "Actor does not have write permissions to the repository",
+    // Step 3: Check write permissions (only for entity contexts)
+    if (isEntityContext(context)) {
+      const hasWritePermissions = await checkWritePermissions(
+        octokit.rest,
+        context,
       );
+      if (!hasWritePermissions) {
+        throw new Error(
+          "Actor does not have write permissions to the repository",
+        );
+      }
     }
 
     // Step 4: Get mode and check trigger conditions
-    const mode = getMode(context.inputs.mode);
+    const mode = getMode(context.inputs.mode, context);
     const containsTrigger = mode.shouldTrigger(context);
 
     // Set output for action.yml to check
@@ -51,65 +47,16 @@ async function run() {
       return;
     }
 
-    // Step 5: Check if actor is human
-    await checkHumanActor(octokit.rest, context);
-
-    // Step 6: Create initial tracking comment (mode-aware)
-    // Some modes (e.g., agent mode) may not need tracking comments
-    let commentId: number | undefined;
-    let commentData:
-      | Awaited<ReturnType<typeof createInitialComment>>
-      | undefined;
-    if (mode.shouldCreateTrackingComment()) {
-      commentData = await createInitialComment(octokit.rest, context);
-      commentId = commentData.id;
-    }
-
-    // Step 7: Fetch GitHub data (once for both branch setup and prompt creation)
-    const githubData = await fetchGitHubData({
-      octokits: octokit,
-      repository: `${context.repository.owner}/${context.repository.repo}`,
-      prNumber: context.entityNumber.toString(),
-      isPR: context.isPR,
-      triggerUsername: context.actor,
-    });
-
-    // Step 8: Setup branch
-    const branchInfo = await setupBranch(octokit, githubData, context);
-
-    // Step 9: Configure git authentication if not using commit signing
-    if (!context.inputs.useCommitSigning) {
-      try {
-        await configureGitAuth(githubToken, context, commentData?.user || null);
-      } catch (error) {
-        console.error("Failed to configure git authentication:", error);
-        throw error;
-      }
-    }
-
-    // Step 10: Create prompt file
-    const modeContext = mode.prepareContext(context, {
-      commentId,
-      baseBranch: branchInfo.baseBranch,
-      claudeBranch: branchInfo.claudeBranch,
-    });
-
-    await createPrompt(mode, modeContext, githubData, context);
-
-    // Step 11: Get MCP configuration
-    const additionalMcpConfig = process.env.MCP_CONFIG || "";
-    const mcpConfig = await prepareMcpConfig({
-      githubToken,
-      owner: context.repository.owner,
-      repo: context.repository.repo,
-      branch: branchInfo.claudeBranch || branchInfo.currentBranch,
-      baseBranch: branchInfo.baseBranch,
-      additionalMcpConfig,
-      claudeCommentId: commentId?.toString() || "",
-      allowedTools: context.inputs.allowedTools,
+    // Step 5: Use the new modular prepare function
+    const result = await prepare({
       context,
+      octokit,
+      mode,
+      githubToken,
     });
-    core.setOutput("mcp_config", mcpConfig);
+
+    // Set the MCP config output
+    core.setOutput("mcp_config", result.mcpConfig);
   } catch (error) {
     const errorMessage = error instanceof Error ? error.message : String(error);
     core.setFailed(`Prepare step failed with error: ${errorMessage}`);

src/entrypoints/update-comment-link.ts

@@ -9,6 +9,7 @@ import {
 import {
   parseGitHubContext,
   isPullRequestReviewCommentEvent,
+  isEntityContext,
 } from "../github/context";
 import { GITHUB_SERVER_URL } from "../github/api/config";
 import { checkAndCommitOrDeleteBranch } from "../github/operations/branch-cleanup";
@@ -23,7 +24,14 @@ async function run() {
     const triggerUsername = process.env.TRIGGER_USERNAME;
 
     const context = parseGitHubContext();
+
+    // This script is only called for entity-based events
+    if (!isEntityContext(context)) {
+      throw new Error("update-comment-link requires an entity context");
+    }
+
     const { owner, repo } = context.repository;
+
     const octokit = createOctokit(githubToken);
 
     const serverUrl = GITHUB_SERVER_URL;

src/github/context.ts

@@ -7,12 +7,54 @@ import type {
   PullRequestReviewEvent,
   PullRequestReviewCommentEvent,
 } from "@octokit/webhooks-types";
+// Custom types for GitHub Actions events that aren't webhooks
+export type WorkflowDispatchEvent = {
+  action?: never;
+  inputs?: Record<string, any>;
+  ref?: string;
+  repository: {
+    name: string;
+    owner: {
+      login: string;
+    };
+  };
+  sender: {
+    login: string;
+  };
+  workflow: string;
+};
+
+export type ScheduleEvent = {
+  action?: never;
+  schedule?: string;
+  repository: {
+    name: string;
+    owner: {
+      login: string;
+    };
+  };
+};
 import type { ModeName } from "../modes/types";
 import { DEFAULT_MODE, isValidMode } from "../modes/registry";
 
-export type ParsedGitHubContext = {
+// Event name constants for better maintainability
+const ENTITY_EVENT_NAMES = [
+  "issues",
+  "issue_comment",
+  "pull_request",
+  "pull_request_review",
+  "pull_request_review_comment",
+] as const;
+
+const AUTOMATION_EVENT_NAMES = ["workflow_dispatch", "schedule"] as const;
+
+// Derive types from constants for better maintainability
+type EntityEventName = (typeof ENTITY_EVENT_NAMES)[number];
+type AutomationEventName = (typeof AUTOMATION_EVENT_NAMES)[number];
+
+// Common fields shared by all context types
+type BaseContext = {
   runId: string;
-  eventName: string;
   eventAction?: string;
   repository: {
     owner: string;
@@ -20,14 +62,6 @@ export type ParsedGitHubContext = {
     full_name: string;
   };
   actor: string;
-  payload:
-    | IssuesEvent
-    | IssueCommentEvent
-    | PullRequestEvent
-    | PullRequestReviewEvent
-    | PullRequestReviewCommentEvent;
-  entityNumber: number;
-  isPR: boolean;
   inputs: {
     mode: ModeName;
     triggerPhrase: string;
@@ -46,7 +80,29 @@ export type ParsedGitHubContext = {
   };
 };
 
-export function parseGitHubContext(): ParsedGitHubContext {
+// Context for entity-based events (issues, PRs, comments)
+export type ParsedGitHubContext = BaseContext & {
+  eventName: EntityEventName;
+  payload:
+    | IssuesEvent
+    | IssueCommentEvent
+    | PullRequestEvent
+    | PullRequestReviewEvent
+    | PullRequestReviewCommentEvent;
+  entityNumber: number;
+  isPR: boolean;
+};
+
+// Context for automation events (workflow_dispatch, schedule)
+export type AutomationContext = BaseContext & {
+  eventName: AutomationEventName;
+  payload: WorkflowDispatchEvent | ScheduleEvent;
+};
+
+// Union type for all contexts
+export type GitHubContext = ParsedGitHubContext | AutomationContext;
+
+export function parseGitHubContext(): GitHubContext {
   const context = github.context;
 
   const modeInput = process.env.MODE ?? DEFAULT_MODE;
@@ -56,7 +112,6 @@ export function parseGitHubContext(): ParsedGitHubContext {
 
   const commonFields = {
     runId: process.env.GITHUB_RUN_ID!,
-    eventName: context.eventName,
     eventAction: context.payload.action,
     repository: {
       owner: context.repo.owner,
@@ -86,49 +141,69 @@ export function parseGitHubContext(): ParsedGitHubContext {
 
   switch (context.eventName) {
     case "issues": {
+      const payload = context.payload as IssuesEvent;
       return {
         ...commonFields,
-        payload: context.payload as IssuesEvent,
-        entityNumber: (context.payload as IssuesEvent).issue.number,
+        eventName: "issues",
+        payload,
+        entityNumber: payload.issue.number,
         isPR: false,
       };
     }
     case "issue_comment": {
+      const payload = context.payload as IssueCommentEvent;
       return {
         ...commonFields,
-        payload: context.payload as IssueCommentEvent,
-        entityNumber: (context.payload as IssueCommentEvent).issue.number,
-        isPR: Boolean(
-          (context.payload as IssueCommentEvent).issue.pull_request,
-        ),
+        eventName: "issue_comment",
+        payload,
+        entityNumber: payload.issue.number,
+        isPR: Boolean(payload.issue.pull_request),
       };
     }
     case "pull_request": {
+      const payload = context.payload as PullRequestEvent;
       return {
         ...commonFields,
-        payload: context.payload as PullRequestEvent,
-        entityNumber: (context.payload as PullRequestEvent).pull_request.number,
+        eventName: "pull_request",
+        payload,
+        entityNumber: payload.pull_request.number,
         isPR: true,
       };
     }
     case "pull_request_review": {
+      const payload = context.payload as PullRequestReviewEvent;
       return {
         ...commonFields,
-        payload: context.payload as PullRequestReviewEvent,
-        entityNumber: (context.payload as PullRequestReviewEvent).pull_request
-          .number,
+        eventName: "pull_request_review",
+        payload,
+        entityNumber: payload.pull_request.number,
         isPR: true,
       };
     }
     case "pull_request_review_comment": {
+      const payload = context.payload as PullRequestReviewCommentEvent;
       return {
         ...commonFields,
-        payload: context.payload as PullRequestReviewCommentEvent,
-        entityNumber: (context.payload as PullRequestReviewCommentEvent)
-          .pull_request.number,
+        eventName: "pull_request_review_comment",
+        payload,
+        entityNumber: payload.pull_request.number,
         isPR: true,
       };
     }
+    case "workflow_dispatch": {
+      return {
+        ...commonFields,
+        eventName: "workflow_dispatch",
+        payload: context.payload as unknown as WorkflowDispatchEvent,
+      };
+    }
+    case "schedule": {
+      return {
+        ...commonFields,
+        eventName: "schedule",
+        payload: context.payload as unknown as ScheduleEvent,
+      };
+    }
     default:
       throw new Error(`Unsupported event type: ${context.eventName}`);
   }
@@ -162,37 +237,53 @@ export function parseAdditionalPermissions(s: string): Map<string, string> {
 }
 
 export function isIssuesEvent(
-  context: ParsedGitHubContext,
+  context: GitHubContext,
 ): context is ParsedGitHubContext & { payload: IssuesEvent } {
   return context.eventName === "issues";
 }
 
 export function isIssueCommentEvent(
-  context: ParsedGitHubContext,
+  context: GitHubContext,
 ): context is ParsedGitHubContext & { payload: IssueCommentEvent } {
   return context.eventName === "issue_comment";
 }
 
 export function isPullRequestEvent(
-  context: ParsedGitHubContext,
+  context: GitHubContext,
 ): context is ParsedGitHubContext & { payload: PullRequestEvent } {
   return context.eventName === "pull_request";
 }
 
 export function isPullRequestReviewEvent(
-  context: ParsedGitHubContext,
+  context: GitHubContext,
 ): context is ParsedGitHubContext & { payload: PullRequestReviewEvent } {
   return context.eventName === "pull_request_review";
 }
 
 export function isPullRequestReviewCommentEvent(
-  context: ParsedGitHubContext,
+  context: GitHubContext,
 ): context is ParsedGitHubContext & { payload: PullRequestReviewCommentEvent } {
   return context.eventName === "pull_request_review_comment";
 }
 
 export function isIssuesAssignedEvent(
-  context: ParsedGitHubContext,
+  context: GitHubContext,
 ): context is ParsedGitHubContext & { payload: IssuesAssignedEvent } {
   return isIssuesEvent(context) && context.eventAction === "assigned";
 }
+
+// Type guard to check if context is an entity context (has entityNumber and isPR)
+export function isEntityContext(
+  context: GitHubContext,
+): context is ParsedGitHubContext {
+  return ENTITY_EVENT_NAMES.includes(context.eventName as EntityEventName);
+}
+
+// Type guard to check if context is an automation context
+export function isAutomationContext(
+  context: GitHubContext,
+): context is AutomationContext {
+  return AUTOMATION_EVENT_NAMES.includes(
+    context.eventName as AutomationEventName,
+  );
+}

src/mcp/install-mcp-server.ts

@@ -1,5 +1,5 @@
 import * as core from "@actions/core";
-import { GITHUB_API_URL, GITHUB_SERVER_URL } from "../github/api/config";
+import { GITHUB_API_URL } from "../github/api/config";
 import type { ParsedGitHubContext } from "../github/context";
 import { Octokit } from "@octokit/rest";
 
@@ -141,7 +141,7 @@ export async function prepareMcpConfig(
           GITHUB_TOKEN: process.env.ACTIONS_TOKEN,
           REPO_OWNER: owner,
           REPO_NAME: repo,
-          PR_NUMBER: context.entityNumber.toString(),
+          PR_NUMBER: context.entityNumber?.toString() || "",
           RUNNER_TEMP: process.env.RUNNER_TEMP || "/tmp",
         },
       };
@@ -157,12 +157,9 @@ export async function prepareMcpConfig(
           "-e",
           "GITHUB_PERSONAL_ACCESS_TOKEN",
           "ghcr.io/github/github-mcp-server:sha-efef8ae", // https://github.com/github/github-mcp-server/releases/tag/v0.9.0
-          "-e",
-          "GITHUB_HOST",
         ],
         env: {
           GITHUB_PERSONAL_ACCESS_TOKEN: githubToken,
-          GITHUB_HOST: GITHUB_SERVER_URL,
         },
       };
     }

src/modes/agent/index.ts

@@ -1,30 +1,29 @@
-import type { Mode } from "../types";
+import * as core from "@actions/core";
+import { mkdir, writeFile } from "fs/promises";
+import type { Mode, ModeOptions, ModeResult } from "../types";
+import { isAutomationContext } from "../../github/context";
 
 /**
  * Agent mode implementation.
  *
- * This mode is designed for automation and workflow_dispatch scenarios.
- * It always triggers (no checking), allows highly flexible configurations,
- * and works well with override_prompt for custom workflows.
- *
- * In the future, this mode could restrict certain tools for safety in automation contexts,
- * e.g., disallowing WebSearch or limiting file system operations.
+ * This mode is specifically designed for automation events (workflow_dispatch and schedule).
+ * It bypasses the standard trigger checking and comment tracking used by tag mode,
+ * making it ideal for scheduled tasks and manual workflow runs.
  */
 export const agentMode: Mode = {
   name: "agent",
-  description: "Automation mode that always runs without trigger checking",
+  description: "Automation mode for workflow_dispatch and schedule events",
 
-  shouldTrigger() {
-    return true;
+  shouldTrigger(context) {
+    // Only trigger for automation events
+    return isAutomationContext(context);
   },
 
-  prepareContext(context, data) {
+  prepareContext(context) {
+    // Agent mode doesn't use comment tracking or branch management
     return {
       mode: "agent",
       githubContext: context,
-      commentId: data?.commentId,
-      baseBranch: data?.baseBranch,
-      claudeBranch: data?.claudeBranch,
     };
   },
 
@@ -39,4 +38,80 @@ export const agentMode: Mode = {
   shouldCreateTrackingComment() {
     return false;
   },
+
+  async prepare({ context }: ModeOptions): Promise<ModeResult> {
+    // Agent mode handles automation events (workflow_dispatch, schedule) only
+
+    // Create prompt directory
+    await mkdir(`${process.env.RUNNER_TEMP}/claude-prompts`, {
+      recursive: true,
+    });
+
+    // Write the prompt file - the base action requires a prompt_file parameter,
+    // so we must create this file even though agent mode typically uses
+    // override_prompt or direct_prompt. If neither is provided, we write
+    // a minimal prompt with just the repository information.
+    const promptContent =
+      context.inputs.overridePrompt ||
+      context.inputs.directPrompt ||
+      `Repository: ${context.repository.owner}/${context.repository.repo}`;
+
+    await writeFile(
+      `${process.env.RUNNER_TEMP}/claude-prompts/claude-prompt.txt`,
+      promptContent,
+    );
+
+    // Export tool environment variables for agent mode
+    const baseTools = [
+      "Edit",
+      "MultiEdit",
+      "Glob",
+      "Grep",
+      "LS",
+      "Read",
+      "Write",
+    ];
+
+    // Add user-specified tools
+    const allowedTools = [...baseTools, ...context.inputs.allowedTools];
+    const disallowedTools = [
+      "WebSearch",
+      "WebFetch",
+      ...context.inputs.disallowedTools,
+    ];
+
+    core.exportVariable("ALLOWED_TOOLS", allowedTools.join(","));
+    core.exportVariable("DISALLOWED_TOOLS", disallowedTools.join(","));
+
+    // Agent mode uses a minimal MCP configuration
+    // We don't need comment servers or PR-specific tools for automation
+    const mcpConfig: any = {
+      mcpServers: {},
+    };
+
+    // Add user-provided additional MCP config if any
+    const additionalMcpConfig = process.env.MCP_CONFIG || "";
+    if (additionalMcpConfig.trim()) {
+      try {
+        const additional = JSON.parse(additionalMcpConfig);
+        if (additional && typeof additional === "object") {
+          Object.assign(mcpConfig, additional);
+        }
+      } catch (error) {
+        core.warning(`Failed to parse additional MCP config: ${error}`);
+      }
+    }
+
+    core.setOutput("mcp_config", JSON.stringify(mcpConfig));
+
+    return {
+      commentId: undefined,
+      branchInfo: {
+        baseBranch: "",
+        currentBranch: "",
+        claudeBranch: undefined,
+      },
+      mcpConfig: JSON.stringify(mcpConfig),
+    };
+  },
 };

src/modes/registry.ts

@@ -13,6 +13,8 @@
 import type { Mode, ModeName } from "./types";
 import { tagMode } from "./tag";
 import { agentMode } from "./agent";
+import type { GitHubContext } from "../github/context";
+import { isAutomationContext } from "../github/context";
 
 export const DEFAULT_MODE = "tag" as const;
 export const VALID_MODES = ["tag", "agent"] as const;
@@ -27,12 +29,13 @@ const modes = {
 } as const satisfies Record<ModeName, Mode>;
 
 /**
- * Retrieves a mode by name.
+ * Retrieves a mode by name and validates it can handle the event type.
  * @param name The mode name to retrieve
+ * @param context The GitHub context to validate against
  * @returns The requested mode
- * @throws Error if the mode is not found
+ * @throws Error if the mode is not found or cannot handle the event
  */
-export function getMode(name: ModeName): Mode {
+export function getMode(name: ModeName, context: GitHubContext): Mode {
   const mode = modes[name];
   if (!mode) {
     const validModes = VALID_MODES.join("', '");
@@ -40,6 +43,14 @@ export function getMode(name: ModeName): Mode {
       `Invalid mode '${name}'. Valid modes are: '${validModes}'. Please check your workflow configuration.`,
     );
   }
+
+  // Validate mode can handle the event type
+  if (name === "tag" && isAutomationContext(context)) {
+    throw new Error(
+      `Tag mode cannot handle ${context.eventName} events. Use 'agent' mode for automation events.`,
+    );
+  }
+
   return mode;
 }
 

src/modes/tag/index.ts

@@ -1,5 +1,14 @@
-import type { Mode } from "../types";
+import * as core from "@actions/core";
+import type { Mode, ModeOptions, ModeResult } from "../types";
 import { checkContainsTrigger } from "../../github/validation/trigger";
+import { checkHumanActor } from "../../github/validation/actor";
+import { createInitialComment } from "../../github/operations/comments/create-initial";
+import { setupBranch } from "../../github/operations/branch";
+import { configureGitAuth } from "../../github/operations/git-config";
+import { prepareMcpConfig } from "../../mcp/install-mcp-server";
+import { fetchGitHubData } from "../../github/data/fetcher";
+import { createPrompt } from "../../create-prompt";
+import { isEntityContext } from "../../github/context";
 
 /**
  * Tag mode implementation.
@@ -13,6 +22,10 @@ export const tagMode: Mode = {
   description: "Traditional implementation mode triggered by @claude mentions",
 
   shouldTrigger(context) {
+    // Tag mode only handles entity events
+    if (!isEntityContext(context)) {
+      return false;
+    }
     return checkContainsTrigger(context);
   },
 
@@ -37,4 +50,74 @@ export const tagMode: Mode = {
   shouldCreateTrackingComment() {
     return true;
   },
+
+  async prepare({
+    context,
+    octokit,
+    githubToken,
+  }: ModeOptions): Promise<ModeResult> {
+    // Tag mode only handles entity-based events
+    if (!isEntityContext(context)) {
+      throw new Error("Tag mode requires entity context");
+    }
+
+    // Check if actor is human
+    await checkHumanActor(octokit.rest, context);
+
+    // Create initial tracking comment
+    const commentData = await createInitialComment(octokit.rest, context);
+    const commentId = commentData.id;
+
+    const githubData = await fetchGitHubData({
+      octokits: octokit,
+      repository: `${context.repository.owner}/${context.repository.repo}`,
+      prNumber: context.entityNumber.toString(),
+      isPR: context.isPR,
+      triggerUsername: context.actor,
+    });
+
+    // Setup branch
+    const branchInfo = await setupBranch(octokit, githubData, context);
+
+    // Configure git authentication if not using commit signing
+    if (!context.inputs.useCommitSigning) {
+      try {
+        await configureGitAuth(githubToken, context, commentData.user);
+      } catch (error) {
+        console.error("Failed to configure git authentication:", error);
+        throw error;
+      }
+    }
+
+    // Create prompt file
+    const modeContext = this.prepareContext(context, {
+      commentId,
+      baseBranch: branchInfo.baseBranch,
+      claudeBranch: branchInfo.claudeBranch,
+    });
+
+    await createPrompt(tagMode, modeContext, githubData, context);
+
+    // Get MCP configuration
+    const additionalMcpConfig = process.env.MCP_CONFIG || "";
+    const mcpConfig = await prepareMcpConfig({
+      githubToken,
+      owner: context.repository.owner,
+      repo: context.repository.repo,
+      branch: branchInfo.claudeBranch || branchInfo.currentBranch,
+      baseBranch: branchInfo.baseBranch,
+      additionalMcpConfig,
+      claudeCommentId: commentId.toString(),
+      allowedTools: context.inputs.allowedTools,
+      context,
+    });
+
+    core.setOutput("mcp_config", mcpConfig);
+
+    return {
+      commentId,
+      branchInfo,
+      mcpConfig,
+    };
+  },
 };

src/modes/types.ts

@@ -1,10 +1,10 @@
-import type { ParsedGitHubContext } from "../github/context";
+import type { GitHubContext } from "../github/context";
 
 export type ModeName = "tag" | "agent";
 
 export type ModeContext = {
   mode: ModeName;
-  githubContext: ParsedGitHubContext;
+  githubContext: GitHubContext;
   commentId?: number;
   baseBranch?: string;
   claudeBranch?: string;
@@ -32,12 +32,12 @@ export type Mode = {
   /**
    * Determines if this mode should trigger based on the GitHub context
    */
-  shouldTrigger(context: ParsedGitHubContext): boolean;
+  shouldTrigger(context: GitHubContext): boolean;
 
   /**
    * Prepares the mode context with any additional data needed for prompt generation
    */
-  prepareContext(context: ParsedGitHubContext, data?: ModeData): ModeContext;
+  prepareContext(context: GitHubContext, data?: ModeData): ModeContext;
 
   /**
    * Returns the list of tools that should be allowed for this mode
@@ -53,4 +53,28 @@ export type Mode = {
    * Determines if this mode should create a tracking comment
    */
   shouldCreateTrackingComment(): boolean;
+
+  /**
+   * Prepares the GitHub environment for this mode.
+   * Each mode decides how to handle different event types.
+   * @returns PrepareResult with commentId, branchInfo, and mcpConfig
+   */
+  prepare(options: ModeOptions): Promise<ModeResult>;
+};
+
+// Define types for mode prepare method to avoid circular dependencies
+export type ModeOptions = {
+  context: GitHubContext;
+  octokit: any; // We'll use any to avoid circular dependency with Octokits
+  githubToken: string;
+};
+
+export type ModeResult = {
+  commentId?: number;
+  branchInfo: {
+    baseBranch: string;
+    claudeBranch?: string;
+    currentBranch: string;
+  };
+  mcpConfig: string;
 };

src/prepare/index.ts

@@ -0,0 +1,20 @@
+/**
+ * Main prepare module that delegates to the mode's prepare method
+ */
+
+import type { PrepareOptions, PrepareResult } from "./types";
+
+export async function prepare(options: PrepareOptions): Promise<PrepareResult> {
+  const { mode, context, octokit, githubToken } = options;
+
+  console.log(
+    `Preparing with mode: ${mode.name} for event: ${context.eventName}`,
+  );
+
+  // Delegate to the mode's prepare method
+  return mode.prepare({
+    context,
+    octokit,
+    githubToken,
+  });
+}

src/prepare/types.ts

@@ -0,0 +1,20 @@
+import type { GitHubContext } from "../github/context";
+import type { Octokits } from "../github/api/client";
+import type { Mode } from "../modes/types";
+
+export type PrepareResult = {
+  commentId?: number;
+  branchInfo: {
+    baseBranch: string;
+    claudeBranch?: string;
+    currentBranch: string;
+  };
+  mcpConfig: string;
+};
+
+export type PrepareOptions = {
+  context: GitHubContext;
+  octokit: Octokits;
+  mode: Mode;
+  githubToken: string;
+};

test/mockContext.ts

@@ -1,4 +1,7 @@
-import type { ParsedGitHubContext } from "../src/github/context";
+import type {
+  ParsedGitHubContext,
+  AutomationContext,
+} from "../src/github/context";
 import type {
   IssuesEvent,
   IssueCommentEvent,
@@ -38,7 +41,7 @@ export const createMockContext = (
 ): ParsedGitHubContext => {
   const baseContext: ParsedGitHubContext = {
     runId: "1234567890",
-    eventName: "",
+    eventName: "issue_comment", // Default to a valid entity event
     eventAction: "",
     repository: defaultRepository,
     actor: "test-actor",
@@ -55,6 +58,22 @@ export const createMockContext = (
   return { ...baseContext, ...overrides };
 };
 
+export const createMockAutomationContext = (
+  overrides: Partial<AutomationContext> = {},
+): AutomationContext => {
+  const baseContext: AutomationContext = {
+    runId: "1234567890",
+    eventName: "workflow_dispatch",
+    eventAction: undefined,
+    repository: defaultRepository,
+    actor: "test-actor",
+    payload: {} as any,
+    inputs: defaultInputs,
+  };
+
+  return { ...baseContext, ...overrides };
+};
+
 export const mockIssueOpenedContext: ParsedGitHubContext = {
   runId: "1234567890",
   eventName: "issues",

test/modes/agent.test.ts

@@ -1,82 +1,59 @@
 import { describe, test, expect, beforeEach } from "bun:test";
 import { agentMode } from "../../src/modes/agent";
-import type { ParsedGitHubContext } from "../../src/github/context";
-import { createMockContext } from "../mockContext";
+import type { GitHubContext } from "../../src/github/context";
+import { createMockContext, createMockAutomationContext } from "../mockContext";
 
 describe("Agent Mode", () => {
-  let mockContext: ParsedGitHubContext;
+  let mockContext: GitHubContext;
 
   beforeEach(() => {
-    mockContext = createMockContext({
+    mockContext = createMockAutomationContext({
       eventName: "workflow_dispatch",
-      isPR: false,
     });
   });
 
-  test("agent mode has correct properties and behavior", () => {
-    // Basic properties
+  test("agent mode has correct properties", () => {
     expect(agentMode.name).toBe("agent");
     expect(agentMode.description).toBe(
-      "Automation mode that always runs without trigger checking",
+      "Automation mode for workflow_dispatch and schedule events",
     );
     expect(agentMode.shouldCreateTrackingComment()).toBe(false);
-
-    // Tool methods return empty arrays
     expect(agentMode.getAllowedTools()).toEqual([]);
     expect(agentMode.getDisallowedTools()).toEqual([]);
-
-    // Always triggers regardless of context
-    const contextWithoutTrigger = createMockContext({
-      eventName: "workflow_dispatch",
-      isPR: false,
-      inputs: {
-        ...createMockContext().inputs,
-        triggerPhrase: "@claude",
-      },
-      payload: {} as any,
-    });
-    expect(agentMode.shouldTrigger(contextWithoutTrigger)).toBe(true);
   });
 
-  test("prepareContext includes all required data", () => {
-    const data = {
-      commentId: 789,
-      baseBranch: "develop",
-      claudeBranch: "claude/automated-task",
-    };
-
-    const context = agentMode.prepareContext(mockContext, data);
-
-    expect(context.mode).toBe("agent");
-    expect(context.githubContext).toBe(mockContext);
-    expect(context.commentId).toBe(789);
-    expect(context.baseBranch).toBe("develop");
-    expect(context.claudeBranch).toBe("claude/automated-task");
-  });
-
-  test("prepareContext works without data", () => {
+  test("prepareContext returns minimal data", () => {
     const context = agentMode.prepareContext(mockContext);
 
     expect(context.mode).toBe("agent");
     expect(context.githubContext).toBe(mockContext);
-    expect(context.commentId).toBeUndefined();
-    expect(context.baseBranch).toBeUndefined();
-    expect(context.claudeBranch).toBeUndefined();
+    // Agent mode doesn't use comment tracking or branch management
+    expect(Object.keys(context)).toEqual(["mode", "githubContext"]);
   });
 
-  test("agent mode triggers for all event types", () => {
-    const events = [
-      "push",
-      "schedule",
-      "workflow_dispatch",
-      "repository_dispatch",
+  test("agent mode only triggers for workflow_dispatch and schedule events", () => {
+    // Should trigger for automation events
+    const workflowDispatchContext = createMockAutomationContext({
+      eventName: "workflow_dispatch",
+    });
+    expect(agentMode.shouldTrigger(workflowDispatchContext)).toBe(true);
+
+    const scheduleContext = createMockAutomationContext({
+      eventName: "schedule",
+    });
+    expect(agentMode.shouldTrigger(scheduleContext)).toBe(true);
+
+    // Should NOT trigger for entity events
+    const entityEvents = [
       "issue_comment",
       "pull_request",
-    ];
+      "pull_request_review",
+      "issues",
+    ] as const;
 
-    events.forEach((eventName) => {
-      const context = createMockContext({ eventName, isPR: false });
-      expect(agentMode.shouldTrigger(context)).toBe(true);
+    entityEvents.forEach((eventName) => {
+      const context = createMockContext({ eventName });
+      expect(agentMode.shouldTrigger(context)).toBe(false);
     });
   });
 });

test/modes/registry.test.ts

@@ -3,23 +3,60 @@ import { getMode, isValidMode } from "../../src/modes/registry";
 import type { ModeName } from "../../src/modes/types";
 import { tagMode } from "../../src/modes/tag";
 import { agentMode } from "../../src/modes/agent";
+import { createMockContext, createMockAutomationContext } from "../mockContext";
 
 describe("Mode Registry", () => {
-  test("getMode returns tag mode by default", () => {
-    const mode = getMode("tag");
+  const mockContext = createMockContext({
+    eventName: "issue_comment",
+  });
+
+  const mockWorkflowDispatchContext = createMockAutomationContext({
+    eventName: "workflow_dispatch",
+  });
+
+  const mockScheduleContext = createMockAutomationContext({
+    eventName: "schedule",
+  });
+
+  test("getMode returns tag mode for standard events", () => {
+    const mode = getMode("tag", mockContext);
     expect(mode).toBe(tagMode);
     expect(mode.name).toBe("tag");
   });
 
   test("getMode returns agent mode", () => {
-    const mode = getMode("agent");
+    const mode = getMode("agent", mockContext);
+    expect(mode).toBe(agentMode);
+    expect(mode.name).toBe("agent");
+  });
+
+  test("getMode throws error for tag mode with workflow_dispatch event", () => {
+    expect(() => getMode("tag", mockWorkflowDispatchContext)).toThrow(
+      "Tag mode cannot handle workflow_dispatch events. Use 'agent' mode for automation events.",
+    );
+  });
+
+  test("getMode throws error for tag mode with schedule event", () => {
+    expect(() => getMode("tag", mockScheduleContext)).toThrow(
+      "Tag mode cannot handle schedule events. Use 'agent' mode for automation events.",
+    );
+  });
+
+  test("getMode allows agent mode for workflow_dispatch event", () => {
+    const mode = getMode("agent", mockWorkflowDispatchContext);
+    expect(mode).toBe(agentMode);
+    expect(mode.name).toBe("agent");
+  });
+
+  test("getMode allows agent mode for schedule event", () => {
+    const mode = getMode("agent", mockScheduleContext);
     expect(mode).toBe(agentMode);
     expect(mode.name).toBe("agent");
   });
 
   test("getMode throws error for invalid mode", () => {
     const invalidMode = "invalid" as unknown as ModeName;
-    expect(() => getMode(invalidMode)).toThrow(
+    expect(() => getMode(invalidMode, mockContext)).toThrow(
       "Invalid mode 'invalid'. Valid modes are: 'tag', 'agent'. Please check your workflow configuration.",
     );
   });

test/prepare-context.test.ts

@@ -299,15 +299,4 @@ describe("parseEnvVarsWithContext", () => {
       expect(result.allowedTools).toBe("Tool1,Tool2");
     });
   });
-
-  test("should throw error for unsupported event type", () => {
-    process.env = BASE_ENV;
-    const unsupportedContext = createMockContext({
-      eventName: "unsupported_event",
-      eventAction: "whatever",
-    });
-    expect(() => prepareContext(unsupportedContext, "12345")).toThrow(
-      "Unsupported event type: unsupported_event",
-    );
-  });
 });

test/trigger-validation.test.ts

@@ -474,17 +474,6 @@ describe("checkContainsTrigger", () => {
       });
     });
   });
-
-  describe("non-matching events", () => {
-    it("should return false for non-matching event type", () => {
-      const context = createMockContext({
-        eventName: "push",
-        eventAction: "created",
-        payload: {} as any,
-      });
-      expect(checkContainsTrigger(context)).toBe(false);
-    });
-  });
 });
 
 describe("escapeRegExp", () => {