echo-plugins skillA
echo-plugins is agent-read markdown (skill) from brentfarris/echo: Build, validate, package, and stage optional Echo plugins using the Echo Plugin API v1 security and lifecycle contracts..
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 brentfarris/echo/echo-plugins@git:20260819.1b12ab5mdr add brentfarris/echo/echo-plugins@sha256:4ec8d108f9c94980Pin 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_r6iomdp7ic4oo75d)
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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 (9508 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
brentfarris/echo · 11 stars · license MIT · pushed 2026-09-06 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_r6iomdp7ic4oo75d GET https://markdownregistry.com/api/v1/resolve?ref=brentfarris/echo/echo-plugins GET https://markdownregistry.com/api/v1/blob/4ec8d108f9c9498027a7b531ea46bfb9f1c96d893b9bc3d65cff763ae5152939