SkillWorks

Skills

Subagents

Plugins

Marketplaces

SkillWorks

Skills

Subagents

Plugins

Marketplaces

Submit a repo

SkillWorks

Skills

Subagents

Plugins

Marketplaces

Submit a repo

Skills/Backend & APIs/yaklang/hack-skills

ssti-server-side-template-injection

yaklang/hack-skills
SkillLoads cleanly

SSTI playbook. Use when template expressions, server-side rendering, preview features, or templating engines may evaluate attacker-controlled content.

Scores
81
out of 100 · grade B+

2026-08-22

Works

40% of the score

100/100

  • Loads cleanly: valid frontmatter, required fields present, no dangling references.

Maintained

25% of the score

72/100

  • no commits in the last 12 weeks

Adopted

20% of the score

55/100

  • 2,586 installs on skills.sh.
  • 1,836 stars on the source repo.

Documented

15% of the score

81/100

  • 1,356 words with worked examples.
  • Ships 2 bundled files.
Loads cleanly. Every structural check Claude Code needs to register this passed. Last commit 2 months ago.

Install

npx skills add yaklang/hack-skills/ssti-server-side-template-injection
Every number above came out of reading the file and its repository. Nothing is a judgement call, nothing is a model’s opinion, and nothing can be paid for. The full method is published. Source last committed 2026-06-16.

The record

Type
Skill
Category
Backend & APIs
Repository
yaklang/hack-skills
Last commit
2 months ago · 2026-06-16
Repository stars
1.8k
Installs
2,586
Licence
MIT
Instruction length
1,356 words
Bundled files
2
View the source on GitHub

Also in yaklang/hack-skills

Other artifacts published from the same repository.
ArtifactScoreWhat the check foundTypeReachLast commit
active-directory-acl-abuseyaklang/hack-skills
81
cleanSkill2,555 installs2 months ago
active-directory-certificate-servicesyaklang/hack-skills
81
cleanSkill2,542 installs2 months ago
active-directory-kerberos-attacksyaklang/hack-skills
81
cleanSkill2,543 installs2 months ago
ai-ml-securityyaklang/hack-skills
81
cleanSkill2,531 installs2 months ago
android-pentesting-tricksyaklang/hack-skills
81
cleanSkill2,883 installs2 months ago
anti-debugging-techniquesyaklang/hack-skills
81
cleanSkill2,599 installs2 months ago

Other backend & apis skills

Browse all
Same category, same type, ranked by score.
ArtifactScoreWhat the check foundCategoryReachLast commit
find-skillsvercel-labs/skills
98
cleanBackend & APIs3,055,082 installs3 days ago
write-api-referencevercel/next.js
94
cleanBackend & APIs142k starstoday
fastapifastapi/fastapi
93
cleanBackend & APIs8,017 installs2 days ago
paperclippaperclipai/paperclip
93
cleanBackend & APIs3,217 installstoday
onchain-pay-open-apiccxt/ccxt
93
cleanBackend & APIs44k starstoday
namecheapgithub/awesome-copilot
93
cleanBackend & APIs38k starstoday

Put this measurement in your README

A badge carrying how many listings this index holds from the repository and how many pass every static structural check. It reads from this index every time somebody loads your page, so it changes when the measurement changes and there is nothing to keep up to date. Free, no account, and the value is not something you or we can set by hand.

SkillWorks badge

[![SkillWorks](https://toolproof.kynth.studio/badge/skillworks/yaklang/hack-skills.svg)](https://skillworks.kynth.studio/?q=yaklang%2Fhack-skills)

Would rather not hotlink us? Every badge is also served in shields.io’s endpoint schema, so shields renders the image and your readers never talk to our domain:

Published by Toolproof, the masthead over this index and eight others. The method behind the number is at toolproof.kynth.studio/methodology, and the whole thing is readable as JSON with no key at /api.

Also from Kynth Studios

Built for the same person as SkillWorks

Toolproof

Independent measurement of AI agent tooling

toolproof.kynth.studio

BlockDex

Search public shadcn registries, item by item

blockdex.kynth.studio

KitGrade

SaaS starter kits, scored on what can be checked

kitgrade.kynth.studio

The studio list

One product, taken apart, once a month

Kynth Studios pulls one shipped product open every month — what it does, what it cost to build, what the pipeline behind it looks like, and what the numbers did. One email a month, nothing in between.

Double opt-in — we send one confirmation link and nothing else until you click it.

SkillWorks

Built by

Kynth Studios

the studio behind Toolproof, BlockDex and KitGrade

part of Toolproof, the measurement layer for AI agent tooling

Browse

Skills
Subagents
Plugins
Marketplaces
CLAUDE.md examples

Rankings

Best subagents
Best plugins
Most installed
Will not load

The index

Search
Categories
How we score

Reference

Submit a repository
Sponsor a section
Listings JSON
Privacy

© 2026 SkillWorks. A Kynth Studios product. Changelog

SkillWorks

The studio list

One product, taken apart, once a month

Kynth Studios pulls one shipped product open every month — what it does, what it cost to build, what the pipeline behind it looks like, and what the numbers did. One email a month, nothing in between.

Double opt-in — we send one confirmation link and nothing else until you click it.

SkillWorks

Built by

Kynth Studios

the studio behind Toolproof, BlockDex and KitGrade

part of Toolproof, the measurement layer for AI agent tooling

Browse

Skills
Subagents
Plugins
Marketplaces
CLAUDE.md examples

Rankings

Best subagents
Best plugins
Most installed
Will not load

The index

Search
Categories
How we score

Reference

Submit a repository
Sponsor a section
Listings JSON
Privacy

© 2026 SkillWorks. A Kynth Studios product. Changelog

SkillWorks

The studio list

One product, taken apart, once a month

Kynth Studios pulls one shipped product open every month — what it does, what it cost to build, what the pipeline behind it looks like, and what the numbers did. One email a month, nothing in between.

Double opt-in — we send one confirmation link and nothing else until you click it.

SkillWorks

Built by

Kynth Studios

the studio behind Toolproof, BlockDex and KitGrade

part of Toolproof, the measurement layer for AI agent tooling

Browse

Skills
Subagents
Plugins
Marketplaces
CLAUDE.md examples

Rankings

Best subagents
Best plugins
Most installed
Will not load

The index

Search
Categories
How we score

Reference

Submit a repository
Sponsor a section
Listings JSON
Privacy

© 2026 SkillWorks. A Kynth Studios product. Changelog

SkillWorks