miri-lang/miri · .claude/skills/miri-sentinel/SKILL.md

miri-sentinel skillA

miri-sentinel is agent-read markdown (skill) from miri-lang/miri: Sentinel 🛡️ — a security-focused single pass that finds and fixes ONE security issue (or lands ONE hardening enhancement) in the Miri compiler/runtime. Threat model is a compiler eating untrusted .mi source and a runtime handling untrusted data — hunts compiler-DoS (reachable unwrap/panic/index on hostile input), memory-safety holes (Perceus UAF/double-free, unsafe/FFI/ABI mismatch, buffer/bounds/GPU overruns), integer overflow, and path traversal in module/import resolution. Reproduces the iss.

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

Latest version
mdr add miri-lang/miri/miri-sentinel@git:20260913.eb9dc00
Exact content
mdr add miri-lang/miri/miri-sentinel@sha256:4c5c3986f867c008

Pin 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_ugx3iqlueurftu2j.svg)](https://markdownregistry.com/a/art_ugx3iqlueurftu2j)

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Versions

versioncommittedcommitsizeaudit
git:20260913.eb9dc00 latest2026-09-13 eb9dc00 12,422 BA view · diff
git:20260913.ee0de522026-09-13 ee0de52 12,038 BA view · diff
git:20260707.bdc2f5d2026-07-07 bdc2f5d 12,013 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (12422 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

GitHub

miri-lang/miri · 12 stars · license Apache-2.0 · pushed 2026-09-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ugx3iqlueurftu2j
GET https://markdownregistry.com/api/v1/resolve?ref=miri-lang/miri/miri-sentinel
GET https://markdownregistry.com/api/v1/blob/4c5c3986f867c008e1148bed4858844b25de19a514cb0df60eeab659baad873b