contact-verification skillA
contact-verification is agent-read markdown (skill) from leadmagic/gtm-skills: Verify email addresses before they enter outbound sequences to prevent bounces and protect sender reputation. Use when the user wants to validate emails, check deliverability, verify contact data, prevent bounces, clean a list, or ensure their outreach list is safe to send. Triggers on: \"verify emails\", \"validate this list\", \"check if these emails are real\", \"email verification\", \"bounce prevention\", \"clean my list\", \"are these safe to send\", or any request to confirm email deliver.
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.
How to install
mdr add leadmagic/gtm-skills/contact-verification@\"1.0.0\"mdr add leadmagic/gtm-skills/contact-verification@sha256:927e78381cfe7a50Pin 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_jn7ocyu55jjeqgzv)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| \"1.0.0\" latest | 2026-09-02 | a19750a | 6,915 B | A | view · diff |
| \"1.0.0\" | 2026-06-10 | 17b6e1f | 6,909 B | A | view · diff |
| \"1.0.0\" | 2026-06-10 | 9f00d65 | 6,910 B | A | view · diff |
| \"1.0.0\" | 2026-06-08 | 2fb2a99 | 6,671 B | A | view · diff |
| \"1.0.0\" | 2026-06-07 | 20a6821 | 6,575 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6915 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
leadmagic/gtm-skills · 52 stars · license MIT · pushed 2026-09-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jn7ocyu55jjeqgzv GET https://markdownregistry.com/api/v1/resolve?ref=leadmagic/gtm-skills/contact-verification GET https://markdownregistry.com/api/v1/blob/927e78381cfe7a50930f65ebc5100b8ae9b334fd92e43889f9766b6a453c1168
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