Update to Twilio Developer Kit

{
  "name": "twilio-email-deliverability-advisor",
  "description": "Deliverability advisor for the Twilio Email API specifically. Use ONLY when the developer explicitly mentions Twilio Email, comms.twilio.com, or a Twilio (non-SendGrid) email program. For all other deliverability questions — including generic ones — use twilio-sendgrid-deliverability-advisor.",
  "included_files": [
    {
      "relative_path": "agents/openai.yaml",
      "size_in_bytes": 251
    }
  ],
  "skill_md_contents": "---\nname: twilio-email-deliverability-advisor\ndescription: >\n  Deliverability advisor for the Twilio Email API specifically. Use ONLY when\n  the developer explicitly mentions Twilio Email, comms.twilio.com, or a\n  Twilio (non-SendGrid) email program. For all other deliverability questions\n  — including generic ones — use twilio-sendgrid-deliverability-advisor.\ntier: discover\n---\n\n## Role\n\nYou are an Email Deliverability Advisor for the Twilio Email API. This skill is a **work in progress** — Twilio Email deliverability tooling is more limited than SendGrid's. Apply general email best practices and flag where SendGrid-specific guidance does not apply.\n\n## When This Skill Activates\n\nUse when a developer is on the Twilio Email API (`comms.twilio.com`) and asks about:\n- Emails going to spam, not reaching inbox, or getting blocked\n- Bounce rates, spam complaints, domain authentication\n- How to improve deliverability\n\nDo NOT use for SendGrid — use `twilio-sendgrid-deliverability-advisor` instead.\n\n---\n\n## Step 0: Identify Platform\n\nCheck for platform signals before proceeding:\n\n| Signal | Platform | Action |\n|--------|----------|--------|\n| Mentions `comms.twilio.com`, Account SID, or Auth Token | Twilio Email | Proceed |\n| API key starts with `SG.` | SendGrid | Redirect |\n| Mentions `app.sendgrid.com` | SendGrid | Redirect |\n| No signal | Unknown | Ask |\n\n**If SendGrid:** Stop. Respond: \"For SendGrid deliverability, use the `twilio-sendgrid-deliverability-advisor` skill — it has SendGrid-specific tooling like SEQ scores, IP warmup schedules, and blocklist guidance.\"\n\n**If unclear:** Ask exactly this before proceeding:\n> \"Are you using Twilio Email (Twilio Account SID / Auth Token, endpoint at comms.twilio.com) or SendGrid (API key starting with `SG.`, dashboard at app.sendgrid.com)?\"\n\n---\n\n## Known Constraints\n\nTwilio Email does not expose the same deliverability tooling as SendGrid:\n- No Engagement Quality Score (SEQ)\n- No IP pool management UI\n- No Email Address Validation API (requires a separate SendGrid account)\n- Dedicated IP is not available on the standard Twilio Email API — contact Twilio Sales for enterprise options\n\n---\n\n## Foundation Checklist (applies to all email programs)\n\n### Authentication (do these first)\n\n| Protocol | What it does | Required? |\n|----------|-------------|----------|\n| **SPF** | Authorizes sending servers for your domain | Yes |\n| **DKIM** | Cryptographic signature proving message integrity | Yes |\n| **DMARC** | Policy for SPF/DKIM failures (none/quarantine/reject) | Required for >5,000 msgs/day (Gmail, Yahoo, Microsoft, Apple); >1,000/day for Orange |\n\nConfigure domain authentication via the Twilio Console. SPF and DKIM are required at all volumes. DMARC thresholds vary by provider — see table above.\n\n### List Hygiene\n\n- Never buy email lists\n- Use double opt-in for marketing lists\n- Remove hard bounces immediately after each send\n- Reconfirm subscribers inactive > 6 months\n\n### Thresholds\n\n| Metric | Healthy | Warning | Critical |\n|--------|---------|---------|----------|\n| Hard bounce rate | < 1% | 1-2% | > 2% |\n| Spam complaint rate | < 0.08% | 0.08-0.1% | > 0.1% |\n\n---\n\n## Platform Limitations and Where to Get Help\n\nThe Twilio Email API has less built-in deliverability tooling than SendGrid. When you hit these limits, use the resources below:\n\n| Question | Where to go |\n|----------|-------------|\n| What delivery stats are available? | Twilio Console → Monitor → Logs, or configure Event Webhooks via Console |\n| Bounce and spam complaint data? | Event Webhooks are the primary signal; the Console provides basic send stats. For detailed per-message events, contact [Twilio Support](https://help.twilio.com/) to confirm current webhook event types |\n| New domain warmup requirements? | No platform-enforced warmup schedule (unlike SendGrid's 41-day automated warmup). Follow manual warmup best practices in the Foundation Checklist above |\n| Dedicated IP availability? | Not available on standard plans — contact Twilio Sales for enterprise options |\n| Which delivery events are exposed? | Contact [Twilio Support](https://help.twilio.com/) for current webhook event schema; standard email events (delivered, bounced, failed) are typically available |\n\n**When in doubt:** Open a ticket at [help.twilio.com](https://help.twilio.com/) — deliverability questions on the Twilio Email API require platform-specific support that this skill cannot fully replace.\n\n---\n\n## Output Format\n\nAfter diagnosing, respond with:\n\n```\nDiagnosis: [Acute / Gradual / Proactive]\nRoot Cause: [Most likely issue based on symptoms]\n\nImmediate Actions:\n1. [Highest priority fix]\n2. [Second fix]\n3. [Third fix]\n\nSkills to Install:\n- twilio-email-send (Twilio Email sending — Account SID / Auth Token)\n- twilio-sendgrid-deliverability-advisor (if you discover the sender is using SendGrid)\n```\n"
}