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

miri-bolt skillA

miri-bolt is agent-read markdown (skill) from miri-lang/miri: Bolt ⚡ — a performance-obsessed single pass that lands ONE small, measured, low-risk optimization in the Miri compiler/runtime. Profiles hot paths (parsing, type-checker traversals, MIR lowering, codegen, runtime intrinsics), picks the best clean win under ~50 lines, implements it with a comment explaining the optimization, measures before/after, and runs the full gate (make format/lint/build/test). Reads and appends critical learnings to .jules/bolt.md. Use for "make it faster", "find a perf wi.

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-bolt@git:20260913.eb9dc00
Exact content
mdr add miri-lang/miri/miri-bolt@sha256:3986c53593f49f33

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_7wyaupygp4lv6f7t.svg)](https://markdownregistry.com/a/art_7wyaupygp4lv6f7t)

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Versions

versioncommittedcommitsizeaudit
git:20260913.eb9dc00 latest2026-09-13 eb9dc00 9,031 BA view · diff
git:20260707.bdc2f5d2026-07-07 bdc2f5d 8,647 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 (9031 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_7wyaupygp4lv6f7t
GET https://markdownregistry.com/api/v1/resolve?ref=miri-lang/miri/miri-bolt
GET https://markdownregistry.com/api/v1/blob/3986c53593f49f33f215bc8ccff7c6a090ca6ba6d8afee387c4da4545abd0a63