Twilio for AI provides coding agents with skills and an MCP server for using Twilio services and documentation. The MCP server searches Twilio documentation and API specifications and retrieves full schemas for selected operations, while the skills supply procedural guidance to agents. Its catalogue add-ons are intended for Claude Code, Cursor, Codex, and other tools that support the Agent Skills standard.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add twilio/ai --skill twilio-sendgrid-engagement-qualitygit clone --depth 1 https://github.com/twilio/aiWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/twilio/ai/twilio-sendgrid-engagement-quality)<a href="https://agentmods.dev/skills/twilio/ai/twilio-sendgrid-engagement-quality"><img src="https://agentmods.dev/badge/skills/twilio/ai/twilio-sendgrid-engagement-quality/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/twilio/ai/twilio-sendgrid-engagement-quality"><img src="https://agentmods.dev/badge/skills/twilio/ai/twilio-sendgrid-engagement-quality.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Data Exfiltration · line 65 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00103 | $0.01321 |
| Opus 5 | $0.00051 | $0.00660 |
| Sonnet 5 | $0.00021 | $0.00264 |
| Haiku 4.5 | $0.00010 | $0.00132 |
Grade A, and why
twilio-sendgrid-engagement-quality scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
response = requests.get( How it starts
The opening of the file, as written. The whole thing — 138 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Overview
SendGrid Engagement Quality (SEQ) scores measure how "wanted" your email is by recipients. Higher scores (1-5 scale) correlate with better inbox placement. SEQ is a diagnostic tool — it tells you where your email program is healthy and where it needs improvement.
Key insight: SEQ scores are correlated with deliverability. A higher score means more emails land in inboxes, not spam folders.
Eligibility Requirements
Your account must meet ALL conditions to receive scores:
- Pro or Premier Email API plan — SEQ is not available on Free or Essentials plans
- Open tracking enabled in SendGrid settings
- Minimum 1,000 messages sent in the previous 30 days
If not eligible, the score and metrics fields are omitted from API responses entirely.
The 5 Metrics
All scores range from 1 (poor) to 5 (excellent).
| Metric | What it measures | How to improve |
|---|---|---|
| engagement_recency | Are you sending to an engaged audience? Based on how regularly messages are opened and clicked. | Remove inactive subscribers. Implement re-engagement campaigns before pruning. |
| open_rate | Degree to which your audience opens your messages. | Improve subject lines. Segment audiences by engagement level. |
| bounce_classification | Rejection by mailbox providers due to reputation or spam-like content. | Fix content triggering spam filters. Warm IPs properly. Monitor domain reputation. |
| bounce_rate | Are you sending to addresses that don't exist? Based on permanent bounces to invalid mailboxes. | Implement double opt-in. Clean lists quarterly. Use Email Validation API before sending. |
| spam_rate | Are recipients marking your email as spam? Based on recipients who open then report spam. | Only send to opted-in recipients. Make unsubscribe easy. Match content to expectations set at signup. |
Note: The overall score is NOT a simple average of the 5 metrics — the weighting formula is opaque. A single low metric (e.g., spam_rate = 1) can drag the overall score significantly.
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 11d ago First seen · 138 lines · 103 tokens per session scan A 4da10ac83d5e
twilio-sendgrid-engagement-quality is a skill published in the GitHub repository twilio/ai (32 stars, last pushed 27d ago), licensed MIT. It adds 103 tokens to every session and 1,321 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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