miosa-osa/osa · priv/skills/offensive-api-abuse/SKILL.md

offensive-api-abuse skillB

offensive-api-abuse is agent-read markdown (skill) from miosa-osa/osa: Advanced API exploitation methodology focused on business logic abuse and sophisticated attack patterns that bypass traditional security controls. Covers business logic bypass through API call chaining and workflow manipulation. Addresses GraphQL-specific attacks including batching for credential brute-force, query depth exploitation, and introspection abuse. Includes pagination exploitation for data exfiltration, webhook hijacking for SSRF and data interception, and resource exhaustion through .

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 miosa-osa/osa/offensive-api-abuse@git:20260913.e13b6b8
Exact content
mdr add miosa-osa/osa/offensive-api-abuse@sha256:fa88ab82ddca93c7

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_3st6fzg2cnpncxcd.svg)](https://markdownregistry.com/a/art_3st6fzg2cnpncxcd)

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Versions

versioncommittedcommitsizeaudit
git:20260913.e13b6b8 latest2026-09-13 e13b6b8 23,378 BB view

Audit of the latest version

B  16 of 17 checks passed. Deterministic, no model, same answer every run.
  • fail: No link to a raw IP address (matched: http://127.0.0.1:8080)
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (23378 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 script tag

Source

GitHub

miosa-osa/osa · 57 stars · license NOASSERTION · pushed 2026-09-14 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_3st6fzg2cnpncxcd
GET https://markdownregistry.com/api/v1/resolve?ref=miosa-osa/osa/offensive-api-abuse
GET https://markdownregistry.com/api/v1/blob/fa88ab82ddca93c7c598c494cd3cb03bca251b103e92c295db803143d0c6fe71