agent-email-inbox skillF
agent-email-inbox is agent-read markdown (skill) from asymmetric-al/core: Use when building any system where email content triggers actions — AI agent inboxes, automated support handlers, email-to-task pipelines, or any workflow processing untrusted inbound email. Always use this skill when the user wants to receive emails and act on them programmatically, even if they don't mention "agent" — the skill contains critical security patterns (sender allowlists, content filtering, sandboxed processing) that prevent untrusted email from controlling your system..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# AI Agent Email Inbox
## Overview
This skill covers setting up a secure email inbox that allows your application or AI agent to receive and respond to emails, with content safety measures in place.
**Core principle:** An AI agent's inbox receives untrusted input. Security configuration is important to handle this safely.
### Why Webhook-Based Receiving?
Resend uses webhooks for inbound email, meaning your agent is notified **instantly** when an email arrives. This is valuable for agents because:
- **Real-time responsiveness** — React to emails within seconds, not minutes
- **No polling overhead** — No cron jobs checking "any new mail?" repeatedly
- **Event-driven architecture** — Your agent only wakes up when there's actually something to process
- **Lower API costs** — No wasted calls checking empty inboxes
## Architecture
```
Sender → Email → Resend (MX) → Webhook → Your Server → AI Agent
↓
Security Validation
↓
Process or Reject
```
## SDK Version Requirements
…Read the whole file at its exact version.
How to install
mdr add asymmetric-al/core/agent-email-inbox@v3.0.2mdr add asymmetric-al/core/agent-email-inbox@sha256:51838b3e3c3f0ff2Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_yvhuiw72tpx4pshm)
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Versions
Audit of the latest version
- FAIL, critical: No instruction to send local credentials anywhere (matched: send = new Resend(process.env)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (16300 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 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
asymmetric-al/core · 383 stars · license AGPL-3.0 · pushed 2026-09-23 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_yvhuiw72tpx4pshm GET https://markdownregistry.com/api/v1/resolve?ref=asymmetric-al/core/agent-email-inbox GET https://markdownregistry.com/api/v1/blob/51838b3e3c3f0ff22368e93aa0de37da898b290383c1893da647ccd0295d28e9
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