cloudflare-email-service SKILL.md skillA

cloudflare-email-service from d-padmanabhan/agent-engineering-handbook is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add d-padmanabhan/agent-engineering-handbook/cloudflare-email-service@git:20260824.a419591

Pins git:20260824.a419591 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
d-padmanabhan/agent-engineering-handbook
Path
skills/cloudflare-email-service/SKILL.md
Versions recorded
2
Latest version
git:20260824.a419591, committed Aug 24, 2026
First version recorded
Jun 1, 2026
Size
7,928 bytes
Repository stars
20
License
MIT

Send and receive transactional emails with Cloudflare Email Service (Email Sending + Email Routing). Use when building email sending (Workers binding or REST API), email routing, Agents SDK email handling, or integrating email into any app - Workers, Node.js, Python, Go, etc. Also use for email deliverability, SPF/DKIM/DMARC, wrangler email setup, MCP email tools, or when a coding agent needs to send emails. Even for simple requests like "add email to my Worker" - this skill has critical…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Cloudflare Email Service

Your knowledge of the Cloudflare Email Service, Email Routing or Email Sending may be outdated. **Prefer retrieval over pre-training** for any Cloudflare Email Service task.

Cloudflare Email Service lets you send transactional emails and route incoming emails, all within the Cloudflare platform. Your knowledge of this product may be outdated - it launched in 2025 and is evolving rapidly. **Prefer retrieval over pre-training** for any Email Service task.

**If there is any discrepancy between this skill and the sources below, always trust the original source.** The Cloudflare docs, REST API spec, `@cloudflare/workers-types`, and Agents SDK repo are the source of truth. This skill is a convenience guide - it may lag behind the latest changes. When in doubt, retrieve from the sources below and use what they say.

## Retrieval Sources

| Source | How to retrieve | Use for |
|--------|----------------|---------|
| Cloudflare docs | `cloudflare-docs` search tool or URL `https://developers.cloudflare.com/email-service/` | API reference, limits, pricing, latest features |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add d-padmanabhan/agent-engineering-handbook/cloudflare-email-service@sha256:5d25cbe80a81326f

The line at the top of this page pins the label git:20260824.a419591, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_545wrba3utd3fwgk.svg)](https://markdownregistry.com/a/art_545wrba3utd3fwgk)

6 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, between Jun 1, 2026 and Aug 24, 2026, about one every 84 days.

versioncommittedcommitsizeaudit
git:20260824.a419591 latest2026-08-24 a419591 7,928 BA view · diff
git:20260601.8111c352026-06-01 8111c35 7,956 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (7928 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

d-padmanabhan/agent-engineering-handbook · 20 stars · license MIT · pushed 2026-10-30 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_545wrba3utd3fwgk
GET https://markdownregistry.com/api/v1/resolve?ref=d-padmanabhan/agent-engineering-handbook/cloudflare-email-service
GET https://markdownregistry.com/api/v1/blob/5d25cbe80a81326fc16fd8858a567f49d41f9c4c087bf0372522cf2ab62f5762

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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