binary-credential-format-boundary skillA
binary-credential-format-boundary is agent-read markdown (skill) from jinning6/noosphere: Audit and repair readers for fixed-length binary credentials and their text encodings without mutating raw bytes. Use when code loads Ed25519/X25519 keys, nonces, digests, MAC keys, signatures, tokens, or other opaque bytes from files or environment values; when `.strip()`, decoding, newline handling, or format auto-detection occurs before length/type validation; or when cryptographic tests fail intermittently for otherwise valid generated material..
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 jinning6/noosphere/binary-credential-format-boundary@git:20260715.10fc9a0mdr add jinning6/noosphere/binary-credential-format-boundary@sha256:dcfdd2a1ae6e78a9Pin 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_6srjtrifpqtjlpmf)
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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 (4018 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
jinning6/noosphere · 18 stars · license Apache-2.0 · pushed 2026-09-14 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_6srjtrifpqtjlpmf GET https://markdownregistry.com/api/v1/resolve?ref=jinning6/noosphere/binary-credential-format-boundary GET https://markdownregistry.com/api/v1/blob/dcfdd2a1ae6e78a99d26a5b1f6c2a3f6fb613985fe169ff6d721cbd3a4697191
Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.