Daily post with Cloudflare Workers and AI SDK – fluent-wp-client

A Cloudflare Cron Trigger that generates and publishes a post every morning using the Vercel AI SDK. fluent-wp-client uses only web-standard APIs, so it runs in the Workers runtime without any extra configuration.

Validate the create payload before deploying

Run wp.content('posts').describe() once against your site to get the live create schema, then convert it with z.fromJSONSchema() and validate the payload before calling create(). Mismatches between the generated content and the expected payload surface at development time instead of silently failing in production.

import { z } from 'zod';

const desc = await wp.content('posts').describe();
const postSchema = z.fromJSONSchema(desc.schemas.create!);

const validatedInput = postSchema.parse({ title, content, status: 'publish' });
await wp.content('posts').create(validatedInput);

See Schema discovery for more.

wrangler.toml

[triggers]
crons = ["0 8 * * *"]

worker.ts

import { WordPressClient } from 'fluent-wp-client';
import { generateText } from 'ai';
import { openai } from '@ai-sdk/openai';

interface Env {
  WP_URL: string;
  WP_USER: string;
  WP_APP_PASSWORD: string;
  OPENAI_API_KEY: string;
}

export default {
  async scheduled(_event: ScheduledEvent, env: Env) {
    const wp = new WordPressClient({
      baseUrl: env.WP_URL,
      auth: { username: env.WP_USER, password: env.WP_APP_PASSWORD },
    });

    const today = new Date().toLocaleDateString('en-US', {
      weekday: 'long',
      month: 'long',
      day: 'numeric',
    });

    const { text } = await generateText({
      model: openai('gpt-4o-mini'),
      prompt: `Write a short web development tip for ${today}. Use clear HTML for paragraphs and headings.`,
    });

    await wp.content('posts').create({
      title: `Daily tip — ${today}`,
      content: text,
      status: 'publish',
    });
  },
};