Here is how the Github bot is built in Background Agents codebase.

#cloudflare #ai #opensource #agents

In this article, we review the Github bot in Background Agents codebase. You will learn:

What is Background Agents?
What is this Github bot?

What is Background Agents?

Background Agents is an open-source background agents coding system.

Features

Let your whole team ship code. Not just engineers.
Anyone can start. No configuration required.
Requests become PRs, not backlogs
Scale your team without scaling headcount
Meet agents where you work
Every session is collaborative

Learn more about Background Agents..

What is a Github bot?

In the Background Agents codebase, there is a coding agent that uses this Github bot. You will find the below comment in the background-agents/packages/github-bot/src/index.ts.

/**
 * Open-Inspect GitHub Bot Worker
 *
 * Cloudflare Worker that handles GitHub webhook events and provides
 * automated code review and comment-triggered actions via the coding agent.
 */

So this Github bot does the code review and handles actions triggered via comments on the PR.
In this dispatch handler function, you can see the cases handled:

function dispatchHandler(
  env: Env,
  log: Logger,
  event: string | undefined,
  p: Record<string, unknown>,
  payload: unknown,
  traceId: string
): Promise<HandlerResult> {
  switch (event) {
    case "pull_request":
      if (p.action === "opened") {
        return handlePullRequestOpened(env, log, payload as PullRequestOpenedPayload, traceId);
      }
      if (p.action === "review_requested") {
        return handleReviewRequested(env, log, payload as ReviewRequestedPayload, traceId);
      }
      return Promise.resolve({
        outcome: "skipped",
        skip_reason: "unsupported_action",
      });
    case "issue_comment":
      if (p.action === "created") {
        return handleIssueComment(env, log, payload as IssueCommentPayload, traceId);
      }
      return Promise.resolve({
        outcome: "skipped",
        skip_reason: "unsupported_action",
      });
    case "pull_request_review_comment":
      if (p.action === "created") {
        return handleReviewComment(env, log, payload as ReviewCommentPayload, traceId);
      }
      return Promise.resolve({
        outcome: "skipped",
        skip_reason: "unsupported_action",
      });
    default:
      return Promise.resolve({
        outcome: "skipped",
        skip_reason: "unsupported_event",
      });
  }
}

How is Github bot built?

Background agents use Cloudflare Worker to handle GitHub webhook events.

It has these 2 endpoints defined:

app.get("/health", (c) => c.json({ status: "healthy", service: "open-inspect-github-bot" }));

app.post("/webhooks/github", async (c) => {

About me:

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