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ssrf

ssrf is a skill for Claude Code from securityfortech/hacking-skills. It costs 119 tokens per session (1,981 once invoked), scanned C, original, no licence file.

A security-testing guide for server-side request forgery (SSRF), where a server uses user-supplied URLs or hostnames to make requests.

In plain words
What is it for?
It is for testing URL-handling features such as PDF and report generators and other inputs that cause the server to fetch a location.
Why use it?
It helps identify whether attackers could make the server contact internal services, cloud metadata addresses, or local files.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the web plugin — 28 skills shipped together

not rated 21repo +1 7mo ago C scan 119 tokens no licence

Good fit It is for testing URL-handling features such as PDF and report generators and other inputs that cause the server to fetch a location.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/securityfortech/hacking-skills/ssrf
View source ↗ securityfortech/hacking-skills
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 securityfortech/hacking-skills --skill ssrf
Clone the repo
git clone --depth 1 https://github.com/securityfortech/hacking-skills

Made for: Claude Code.

Or install web, the plugin that ships this one along with the rest of its 28 skills.

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/securityfortech/hacking-skills/ssrf/github.svg)](https://agentmods.dev/skills/securityfortech/hacking-skills/ssrf)
Your own site
<a href="https://agentmods.dev/skills/securityfortech/hacking-skills/ssrf"><img src="https://agentmods.dev/badge/skills/securityfortech/hacking-skills/ssrf/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for ssrf

Your own site · 80×15
<a href="https://agentmods.dev/skills/securityfortech/hacking-skills/ssrf"><img src="https://agentmods.dev/badge/skills/securityfortech/hacking-skills/ssrf.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 119 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,981 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 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 $0.00119 $0.01981
Opus 5.5 $0.00048 $0.00792
Sonnet 5.5 $0.00024 $0.00396
Haiku 4.5 $0.00012 $0.00198

Measured 2mo ago against content hash d758b4a42736, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

ssrf scanned grade C 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 2mo 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 endpointhighServer-side request forgery

One request to 169.254.169.254 can return temporary IAM credentials.

Server-Side Request Forgery (SSRF) occurs when user-controlled input is used to construct URLs that the server fetches, enabling access to internal services, cloud metadata endpoints (169.254.169.254), and local files vi

Makes network callslowCapability

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

Server-Side Request Forgery (SSRF) occurs when user-controlled input is used to construct URLs that the server fetches, enabling access to internal services, cloud metadata endpoints (169.254.169.254), and local files vi
skills/web/injection/ssrf/SKILL.md · 132 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

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. 2mo ago First seen · 132 lines · 119 tokens per session scan C d758b4a42736

Subscribe to this mod's changes

ssrf is a skill published in the GitHub repository securityfortech/hacking-skills (21 stars, last pushed 7mo ago), with no licence file. It adds 119 tokens to every session and 1,981 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it C 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 2026-08-30.

Security
Related

ssrf compared with skills from other repositories

ssrf next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
ssrfsecurityfortech/hacking-skillsSkill217mo agononeC119Claude Code
imagegenopenai/codexSkill133kyesterdayApache-2.0A113Codex
playwright-climicrosoft/playwrightSkill99kyesterdayApache-2.0A19Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79k4d agoMITA200Claude Code, Codex
systematic-debuggingobra/superpowersSkill313k3d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143kyesterdayMITA95Claude Code
next-partial-prefetching-adoptionvercel/next.jsSkill143kyesterdayMITA103Claude Code