gotchas SKILL.md skillA
gotchas from leahycc/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add leahycc/claude-skills/gotchas@git:20261024.bd7364ePins git:20261024.bd7364e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- leahycc/claude-skills
- Path
skills/gotchas/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261024.bd7364e, committed Oct 24, 2026
- Size
- 7,706 bytes
- Repository stars
- 3
- License
- MIT
Catches silent bugs that look right in a diff, compile clean, and pass happy-path tests: 200 OK HTML stand-ins, swallowed exceptions, state written before the async point of no return, module singletons shared across requests, Web APIs that fail without throwing, fresh-clone gaps, and tests that pass for the wrong reason. Use when reviewing a diff, before opening a PR, when debugging "works in dev, breaks on a clean clone or in prod", or when the user asks for gotchas, footguns, blind spots…
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
# Gotchas The bugs that survive `tsc`, the linter, and the first green test run. Both humans and LLMs miss them for the same reason: the code is locally well-formed, and the failure lives in the gap between what a call looks like it does and what the runtime, network, or clean checkout actually does. **If a failure path returns a valid-looking value, you do not have error handling. You have a bug that hides.** **If state changes before the work that can fail, a failure leaves the UI and the data talking about different worlds.** Source checks and dates: [SOURCES.md](SOURCES.md). ## Procedure 1. Read the diff or the files under review, plus `.gitignore`, `package.json` scripts, and the test files that cover the change. 2. Walk the five lenses in the table below. Only load the resource file for a lens that touches the code in front of you. 3. For every async action, trace two paths on paper before running anything: - What happens when the network, parser, or worker rejects halfway through? - What happens when the user clicks twice and the first call settles after the second? …
Read the whole file at its exact version.
How to install
mdr add leahycc/claude-skills/gotchas@sha256:e5d5740dc83b6d15The line at the top of this page pins the label git:20261024.bd7364e, 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_n3iqqwbhow6tgecf)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 24, 2026.
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 (7706 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
leahycc/claude-skills · 3 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_n3iqqwbhow6tgecf GET https://markdownregistry.com/api/v1/resolve?ref=leahycc/claude-skills/gotchas GET https://markdownregistry.com/api/v1/blob/e5d5740dc83b6d15949fabeeacee8df120499dba110c66858b85f38246b039df
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.
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