aegis-api-security SKILL.md skillA

aegis-api-security from as-foss/aegis-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add as-foss/aegis-skills/aegis-api-security@git:20260826.9702747

Pins git:20260826.9702747 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
as-foss/aegis-skills
Path
skills/code/api-security/SKILL.md
Versions recorded
3
Latest version
git:20260826.9702747, committed Aug 26, 2026
First version recorded
Aug 25, 2026
Size
58,481 bytes
Repository stars
16
License
Apache-2.0

Audit playbook module for API-specific security failures covering mass assignment, missing rate limits and pagination caps, GraphQL/gRPC misconfiguration, REST hygiene gaps, API key mishandling, and WebSocket/SSE access-control defects across all mainstream web frameworks.

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

## Scope & Objectives

### Objective

Audit the HTTP-facing surface of the target repository for API-specific design and configuration failures that let a client exceed its intended authority: write fields the server never meant to expose, consume unbounded resources, enumerate internals through schema and documentation surfaces, skip transport or channel authentication, or ride privileged channels cross-origin. For every finding produce file:line evidence, a reproduction recipe (static-first), a severity with rationale, and a framework-correct fix.

### In Scope

| Class | Typical finding | Primary CWE |
|---|---|---|
| Mass assignment / over-posting | Client sets `role`, `is_admin`, `price`, `user_id` through request-body binding to ORM entities | CWE-915 |
| Rate limiting & anti-automation | Unthrottled auth/search/export endpoints, no pagination caps, no per-key quotas | CWE-770, CWE-799 |
| GraphQL configuration | Prod introspection, exposed playground/GraphiQL, no depth/complexity limits, batching abuse, field-suggestion leakage | CWE-200, CWE-400 |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add as-foss/aegis-skills/aegis-api-security@sha256:731983967021bebe

The line at the top of this page pins the label git:20260826.9702747, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_j6h3l5zudn4olbn5.svg)](https://markdownregistry.com/a/art_j6h3l5zudn4olbn5)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, between Aug 25, 2026 and Aug 26, 2026, more than one a day.

versioncommittedcommitsizeaudit
git:20260826.9702747 latest2026-08-26 9702747 58,481 BA view · diff
git:20260825.85624bc2026-08-25 85624bc 58,482 BA view · diff
git:20260825.244c1982026-08-25 244c198 57,508 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (58481 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

as-foss/aegis-skills · 16 stars · license Apache-2.0 · pushed 2026-08-26 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_j6h3l5zudn4olbn5
GET https://markdownregistry.com/api/v1/resolve?ref=as-foss/aegis-skills/aegis-api-security
GET https://markdownregistry.com/api/v1/blob/731983967021bebe00fcacc8d9f6cb1b951896c8b67ba3dc276e6f12ba43e3a7

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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