api-hardening SKILL.md skillC
api-hardening from jamditis/claude-skills-journalism is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jamditis/claude-skills-journalism/api-hardening@git:20260818.3e0e3a8Pins git:20260818.3e0e3a8 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- C, 15 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jamditis/claude-skills-journalism
- Path
security-toolkit/skills/api-hardening/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260818.3e0e3a8, committed Aug 18, 2026
- First version recorded
- May 9, 2026
- Size
- 47,550 bytes
- Repository stars
- 443
- License
- MIT
API hardening for Express, FastAPI, and serverless. Use for rate limiting, CORS, input validation, API keys, or OWASP API Top 10.
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
# API hardening Defense-in-depth patterns for protecting APIs from abuse, injection attacks, and data leakage. Recipes are oriented around the OWASP API Security Top 10:2023 and were last verified on 2026-05-08. ## Step 0: Research the current security landscape (do this first) > Security knowledge ages on a 6-12 month half-life. The recipes below were last verified on 2026-05-08; they may be stale by the time you read this. Before applying any pattern in this skill, fan out research scoped to the API surface or web defense being added so the recipes are interpreted against current authoritative sources, not against this file's snapshot. ### Default-on, with a documented skip Run the 4-angle research below by default. Skip ONLY when ALL of these hold: - (a) You ran this same skill on this same primitive within the last 4 hours of the current session, - (b) That prior research surfaced no urgent advisories for the API surface or web defense being added, - (c) You log a one-line `Research skipped because <reason>` note in your response. …
Read the whole file at its exact version.
How to install
mdr add jamditis/claude-skills-journalism/api-hardening@sha256:7287ea0f9344fcbeThe line at the top of this page pins the label git:20260818.3e0e3a8, 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_46n7jdkxa2mt5az7)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between May 9, 2026 and Aug 18, 2026, about one every 101 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260818.3e0e3a8 latest | 2026-08-18 | 3e0e3a8 | 47,550 B | C | view · diff |
| git:20260509.ff863b0 | 2026-05-09 | ff863b0 | 47,909 B | C | view |
Audit of the latest version
- fail: No link to a raw IP address (matched: http://127.0.0.1:3000)
- 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 (47550 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
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
jamditis/claude-skills-journalism · 443 stars · license MIT · pushed 2026-10-30 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_46n7jdkxa2mt5az7 GET https://markdownregistry.com/api/v1/resolve?ref=jamditis/claude-skills-journalism/api-hardening GET https://markdownregistry.com/api/v1/blob/7287ea0f9344fcbe6579124a1ff47f68911da1dbfe90c7c6b0f336a68653e62e
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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