bun-runtime SKILL.md skillB
bun-runtime from affaan-m/ecc is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add affaan-m/ecc/bun-runtime@git:20260928.48decd0Pins git:20260928.48decd0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- affaan-m/ecc
- Path
.agents/skills/bun-runtime/SKILL.md- Versions recorded
- 8
- Latest version
- git:20260928.48decd0, committed Sep 28, 2026
- First version recorded
- Mar 16, 2026
- Size
- 5,744 bytes
- Repository stars
- 284,510
- License
- MIT
Bun as runtime, package manager, bundler, and test runner. When to choose Bun vs Node, migration notes, and Vercel support.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Bun Runtime Bun is a fast all-in-one JavaScript runtime and toolkit: runtime, package manager, bundler, and test runner. ## When to Use - **Prefer Bun** for: new JS/TS projects, scripts where install/run speed matters, Vercel deployments with Bun runtime, and when you want a single toolchain (run + install + test + build). - **Prefer Node** for: maximum ecosystem compatibility, legacy tooling that assumes Node, or when a dependency has known Bun issues. Use when: adopting Bun, migrating from Node, writing or debugging Bun scripts/tests, or configuring Bun on Vercel or other platforms. ## How It Works - **Version baseline**: guidance below targets Bun 1.4.x. Check the actual version with `bun --version` before relying on flag names, since CLI flags can change between releases. - **Runtime**: Drop-in Node-compatible runtime, built on JavaScriptCore. As of Bun 1.4 the runtime itself is implemented in Rust (migrated from Zig). Not 100% Node-compatible — some native addons, less-common `node:` internal APIs, and packages that depend on Node-specific internals can still fail; verify before depending on it in production. …
Read the whole file at its exact version.
How to install
mdr add affaan-m/ecc/bun-runtime@sha256:27c101ca25477e7eThe line at the top of this page pins the label git:20260928.48decd0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_mu4mruper7ev3xia)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 8 versions of this file, between Mar 16, 2026 and Sep 28, 2026, about one every 28 days. Its first recorded version is graded A and its latest B.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260928.48decd0 latest | 2026-09-28 | 48decd0 | 5,744 B | B | view · diff |
| git:20260928.edcb389 | 2026-09-28 | edcb389 | 6,121 B | B | view · diff |
| git:20260918.c752aac | 2026-09-18 | c752aac | 2,597 B | A | view · diff |
| git:20260905.0180e3f | 2026-09-05 | 0180e3f | 6,108 B | B | view · diff |
| git:20260905.bb41efd | 2026-09-05 | bb41efd | 5,185 B | B | view · diff |
| git:20260429.d89f8d8 | 2026-04-29 | d89f8d8 | 2,584 B | A | view · diff |
| git:20260316.0be6455 | 2026-03-16 | 0be6455 | 2,596 B | A | view · diff |
| git:20260316.f03db82 | 2026-03-16 | f03db82 | 3,101 B | A | view |
Audit of the latest version
- fail: No script tag (matched: <script)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5744 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
affaan-m/ecc · 284,510 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_mu4mruper7ev3xia GET https://markdownregistry.com/api/v1/resolve?ref=affaan-m/ecc/bun-runtime GET https://markdownregistry.com/api/v1/blob/27c101ca25477e7e70442a465d803395910c7264e321157b0ad30bb40e2d319e
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.