ssrf-testing

ssrf-testing is a skill for Claude Code, Codex from Lu1sDV/skillsmd. It costs 64 tokens per session (2,625 once invoked), scanned B, original, no licence file.

A security-testing guide for SSRF, a flaw that can make a web application fetch URLs chosen by an attacker, including private services.

In plain words
What is it for?
Use it when auditing URL-fetching features, testing blind or visible SSRF, checking cloud metadata access, or designing prevention measures.
Why use it?
It helps identify unsafe URL fetching, understand ways attackers may bypass filters, and plan protections.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it when auditing URL-fetching features, testing blind or visible SSRF, checking…

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Install with agentmods
npx agentmods add skills/lu1sdv/skillsmd/ssrf-testing
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Lu1sDV/skillsmd --skill ssrf-testing
Clone the repo
git clone --depth 1 https://github.com/Lu1sDV/skillsmd

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ssrf-testing

README.md
[![agentmods](https://agentmods.dev/badge/skills/lu1sdv/skillsmd/ssrf-testing.svg)](https://agentmods.dev/skills/lu1sdv/skillsmd/ssrf-testing)
Your own site
<a href="https://agentmods.dev/skills/lu1sdv/skillsmd/ssrf-testing"><img src="https://agentmods.dev/badge/skills/lu1sdv/skillsmd/ssrf-testing.svg" alt="Measured on agentmods" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,625 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00064 $0.02625
Opus 5 $0.00032 $0.01313
Sonnet 5 $0.00013 $0.00525
Haiku 4.5 $0.00006 $0.00263

Measured 6d ago against content hash ccb6c4479fcf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade B, and why

ssrf-testing scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Cloud metadata endpointmediumServer-side request forgery

One request to 169.254.169.254 can return temporary IAM credentials.

User sends: url=http://169.254.169.254/latest/meta-data/

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- **curl**: For manual SSRF payload testing
ssrf-testing/SKILL.md · 260 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 260 lines · 64 tokens per session scan B ccb6c4479fcf

Subscribe to this mod's changes

ssrf-testing is a skill published in the GitHub repository Lu1sDV/skillsmd (2 stars, last pushed 4d ago), with no licence file. It adds 64 tokens to every session and 2,625 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 2 findings (cloud metadata endpoint, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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