postmark-automation skillA
postmark-automation is agent-read markdown (skill) from davepoon/buildwithclaude: Automate Postmark email delivery tasks via Rube MCP (Composio): send templated emails, manage templates, monitor delivery stats and bounces. Always search tools first for current schemas..
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 davepoon/buildwithclaude/postmark-automation@git:20260218.645c646mdr add davepoon/buildwithclaude/postmark-automation@sha256:f26062af2d3c62cdPin 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_bkllkfsljcnzefxb)
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Versions
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 (8048 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
davepoon/buildwithclaude · 3,477 stars · license MIT · pushed 2026-09-17 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_bkllkfsljcnzefxb GET https://markdownregistry.com/api/v1/resolve?ref=davepoon/buildwithclaude/postmark-automation GET https://markdownregistry.com/api/v1/blob/f26062af2d3c62cdc5ebaa017aff7bb0f3adc71f622a505d39cf4c4bf48b4daf
Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.