Build the PR reviewer from https://cursor.com/docs/agent-sdk/quickstart.mdin ./pr-reviewer. Fetch that page and follow each step in order.- If agent-sdk isn't on PATH, install it with  npm install --global @grok/agent-sdk. Wait while I finish agent-sdk login.- Use the code from the page as written. Ask me for a GitHub repository and  a pull request I didn't author, and use them in place of acme/checkout#42.- Run both tool-call checks, and confirm the complexity each one reports.- Ask me before any step that posts a review on GitHub. Skip the deploy step.Finish with agent-sdk validate --dir . and the project's TypeScript check,then tell me what passed.

npm install -g @grok/agent-sdkagent-sdk login

agent-sdk init ./pr-reviewercd pr-revieweragent-sdk dev

# PR reviewerCall `inspect_pr` before you judge a pull request, then act on thecomplexity it reports:- `trivial`: approve with `submit_review` if the diff matches the title  and nothing looks risky.- `moderate`: approve only when you understand every patch and see no  risk. Otherwise request a human review and name the files that worry you.- `large`: request a human review right away and point the reviewer at  the biggest files.Never approve a draft. End with one sentence that gives the verdict and why.

export function parsePrUrl(prUrl: string) {  const [owner, repo, pulls, number] = new URL(prUrl).pathname.split("/").filter(Boolean);  const pull_number = Number.parseInt(number ?? "", 10);  if (pulls !== "pull" || owner === undefined || repo === undefined || Number.isNaN(pull_number)) {    throw new Error(`Not a pull request URL: ${prUrl}`);  }  return { owner, repo, pull_number };}

import { defineTool } from "@grok/agent-sdk/tools";import { z } from "zod";import { parsePrUrl } from "../lib/github.js";function rateComplexity(linesChanged: number, changedFiles: number) {  if (linesChanged <= 25 && changedFiles <= 2) {    return "trivial";  }  if (linesChanged <= 400 && changedFiles <= 15) {    return "moderate";  }  return "large";}export default defineTool({  description: "Fetch a pull request's title, patches, and complexity.",  inputSchema: z.object({ prUrl: z.string().describe("GitHub pull request URL") }),  async execute({ prUrl }, ctx) {    const pull = parsePrUrl(prUrl);    const octokit = await ctx.host.github.getOctokit();    const { data: pr } = await octokit.rest.pulls.get(pull);    const { data: files } = await octokit.rest.pulls.listFiles({ ...pull, per_page: 100 });    const complexity = rateComplexity(pr.additions + pr.deletions, pr.changed_files);    return {      title: pr.title,      draft: pr.draft ?? false,      complexity,      files: files.map((file) => ({        path: file.filename,        additions: file.additions,        deletions: file.deletions,        patch: complexity === "large" ? undefined : file.patch?.slice(0, 3000),      })),    };  },});

# Expect "complexity": "trivial"agent-sdk tool call inspect_pr --dir . --input '{"prUrl":"https://github.com/facebook/react/pull/35623"}'# Expect "complexity": "large" and no patch fieldsagent-sdk tool call inspect_pr --dir . --input '{"prUrl":"https://github.com/facebook/react/pull/25229"}'

import { defineTool } from "@grok/agent-sdk/tools";import { z } from "zod";import { parsePrUrl } from "../lib/github.js";export default defineTool({  description: "Approve the pull request, or comment asking for a human review.",  inputSchema: z.object({    prUrl: z.string().describe("GitHub pull request URL"),    verdict: z.enum(["approve", "request_human_review"]),    summary: z.string().describe("One or two sentences on why."),  }),  async execute({ prUrl, verdict, summary }, ctx) {    const approve = verdict === "approve";    const octokit = await ctx.host.github.getOctokit();    await octokit.rest.pulls.createReview({      ...parsePrUrl(prUrl),      event: approve ? "APPROVE" : "COMMENT",      body: approve ? summary : `Human review needed. ${summary}`,    });    return { posted: true, verdict };  },});

import { defaultGitHubAuth, githubChannel } from "@grok/agent-sdk/channels/github";const REVIEW_ACTIONS = new Set(["opened", "reopened", "ready_for_review"]);export default githubChannel({  botName: "agent-sdk-pr-reviewer",  cursorAccount: { repos: ["acme/checkout"] },  onPullRequest: (ctx, pr) => {    if (!REVIEW_ACTIONS.has(pr.action) || pr.draft) {      return null;    }    return {      auth: defaultGitHubAuth(ctx),      title: `Review ${ctx.repository.fullName}#${pr.number}`,      context: [`Review ${pr.url}.`],    };  },});