secondsky/claude-skills · plugins/api-authentication/skills/api-authentication/SKILL.md

api-authentication skillA

api-authentication is agent-read markdown (skill) from secondsky/claude-skills: Secure API authentication with JWT, OAuth 2.0, API keys. Use for authentication systems, third-party integrations, service-to-service communication, or encountering token management, security headers, auth flow errors..

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 secondsky/claude-skills/api-authentication@git:20260402.75421fa
Exact content
mdr add secondsky/claude-skills/api-authentication@sha256:449ecd60931a6a1e

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_lf2aaoakfrhzxg3h.svg)](https://markdownregistry.com/a/art_lf2aaoakfrhzxg3h)

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Versions

versioncommittedcommitsizeaudit
git:20260402.75421fa latest2026-04-02 75421fa 2,664 BA view · diff
git:20251224.ba827ce2025-12-24 ba827ce 2,651 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 (2664 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

secondsky/claude-skills · 219 stars · license MIT · pushed 2026-09-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_lf2aaoakfrhzxg3h
GET https://markdownregistry.com/api/v1/resolve?ref=secondsky/claude-skills/api-authentication
GET https://markdownregistry.com/api/v1/blob/449ecd60931a6a1e6d96815f6865b7e33a6d5acf955c82b8978bb0e38845caec

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.