offensive-api-abuse skillB
offensive-api-abuse is agent-read markdown (skill) from snailsploit/claude-red: 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.
What the file says
# Offensive API Abuse and Advanced Exploitation You are conducting authorized security assessments targeting the business logic layer of API-driven applications. Traditional vulnerability scanners miss the attack patterns in this skill because they require understanding of application workflows, state transitions, and trust relationships between API endpoints. Your goal is to identify vulnerabilities that allow financial manipulation, data exfiltration through legitimate channels, privilege escalation via workflow abuse, and service disruption through logic-layer attacks. ## Quick Workflow 1. Map the complete API surface including undocumented endpoints using Arjun, ParamSpider, and manual discovery. 2. Model the business workflows: identify multi-step transactions, state machines, and trust chains between endpoints. 3. Test each workflow for race conditions using parallel request techniques. 4. Extract and analyze JWTs for algorithm confusion, weak signing, and claim injection opportunities. 5. If GraphQL is present, test batching for brute-force amplification, query depth for DoS, and introspection for schema leakage. …
Read the whole file at its exact version.
How to install
mdr add snailsploit/claude-red/offensive-api-abuse@git:20260825.f7a0553mdr add snailsploit/claude-red/offensive-api-abuse@sha256:42cd1e419aea0b2ePin 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.
[](https://markdownregistry.com/a/art_7uquljdmx6zkx7v5)
1 badge views in 30 days
Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260825.f7a0553 latest | 2026-08-25 | f7a0553 | 22,383 B | B | view · diff |
| git:20260825.8cffe5d | 2026-08-25 | 8cffe5d | 31,203 B | B | view |
Audit of the latest version
- 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 (22383 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
snailsploit/claude-red · 6,831 stars · license MIT · pushed 2026-09-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_7uquljdmx6zkx7v5 GET https://markdownregistry.com/api/v1/resolve?ref=snailsploit/claude-red/offensive-api-abuse GET https://markdownregistry.com/api/v1/blob/42cd1e419aea0b2e5a3e97c1bad3b6503fac9bf9d14a769d7eb65da5486f755a
Your agent 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.
More from snailsploit/claude-red
Every file in snailsploit/claude-red