check-upstream skillA
check-upstream is agent-read markdown (skill) from pdugan20/claudelint: Refreshes the Claude Code docs baseline, runs the conformance check, and recommends schema and rule updates. Use when asked to "check for upstream changes", "check schema drift", "are our schemas up to date", or "what is new in Claude Code"..
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 pdugan20/claudelint/check-upstream@git:20260913.c2fd2b9mdr add pdugan20/claudelint/check-upstream@sha256:d2c3d858431d007aPin 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_fglxq4raspoplmnh)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260913.c2fd2b9 latest | 2026-09-13 | c2fd2b9 | 3,939 B | A | view · diff |
| git:20260727.016b46d | 2026-07-27 | 016b46d | 3,720 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 (3939 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
pdugan20/claudelint · 12 stars · license MIT · pushed 2026-09-13 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_fglxq4raspoplmnh GET https://markdownregistry.com/api/v1/resolve?ref=pdugan20/claudelint/check-upstream GET https://markdownregistry.com/api/v1/blob/d2c3d858431d007ad44b7dcc0bd6d0d5dd00e675f1278a812d23364df68c9846