agent-bank: Skill for OpenCode

Send Test Emails

Send test/mock emails programmatically using Resend for demos, testing AI email agent, or video recordings.

Skill Contract

Purpose

• Send realistic test emails into the AI inbox for demos and pipeline validation.

Inputs

• Recipient address, subject, and HTML/text body.

Outputs

• Resend message ID for traceability.

Canonical Inbox

• [email protected].

Credentials

• Requires RESEND_API_KEY in .opencode/skill/send-test-emails/.env.
• If missing, ask the user to provide it and stop.

Completion Signals

• complete when the message ID is returned.
• error when the send fails.

Quick One-Liner

cd packages/web && npx tsx -e "
import { Resend } from 'resend';
import { config } from 'dotenv';
import * as path from 'path';

config({ path: path.join(process.cwd(), '../../.opencode/skill/send-test-emails/.env') });

const resend = new Resend(process.env.RESEND_API_KEY);

resend.emails.send({
  from: 'Sender Name <[email protected]>',
  to: '[email protected]',
  subject: 'Your subject here',
  html: '<p>Your HTML content</p>',
}).then(r => console.log('✅ Sent:', r.data?.id));
"

Available Domains

Only these domains are verified in Resend:

• zerofinance.ai - Primary domain for test emails
• 0.finance - Production domain

Important: The "from" email signature should match the from address domain. Don't lie about email addresses (e.g., don't show @northstarventures.co in signature when sending from @zerofinance.ai).

Send Email with PDF Attachment

import { Resend } from 'resend';
import puppeteer from 'puppeteer';

// Generate PDF from HTML
const browser = await puppeteer.launch({ headless: true });
const page = await browser.newPage();
await page.setContent(invoiceHtml, { waitUntil: 'networkidle0' });
const pdfBuffer = await page.pdf({ format: 'A4', printBackground: true });
await browser.close();

// Send with attachment
await resend.emails.send({
  from: 'Name <[email protected]>',
  to: '[email protected]',
  subject: 'Invoice attached',
  html: '<p>See attached invoice</p>',
  attachments: [
    {
      filename: 'Invoice.pdf',
      content: Buffer.from(pdfBuffer),
    },
  ],
});