Ready to supercharge your AI agents?

Install any skill in seconds. Free to start, no credit card required.

Tech Stack Identification · transilienceai | DecimalAI

securityby transilienceai

Tech Stack Identification

transilienceai/techstack-identification

Source transilienceai/communitytools ↗License MIT

OSINT-based technology stack identification. Routes to 6 domain sub-skills (frontend, backend, infra, security, osint, correlation) to discover a target's stack from publicly available signals.

SkillScore86Maintained

Automatic

Security & AppSec pack

Last verified 8/18/2026

What it changes

Passed 19 of 22 test cases with the skill, and 9 of 22 without it.

Without skill41%

With skill86%

Checks it passed that the model alone missed

Restricts DNS query velocity to 30 requests per minute.
Restricts WHOIS lookup frequency to 5 requests per minute.
Executes solely the infrastructure domain asset discovery sub-skill.

and 7 more in the full report

10 fixed9 passed either way3 still failing0 broke

Pass-rate lift: +45 pp
Tokens: +23%
Agent turns: 0%
Response time: -25%

Model gemini-3.6-flashMeasured 8/18/2026v119 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/transilienceai-techstack-identification/SKILL.md https://app.decimal.ai/s/transilienceai-techstack-identification/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add transilienceai-techstack-identification, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/transilienceai-techstack-identification/ and pins it in .decimal/skills.lock

decimalai skills add transilienceai-techstack-identification

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/transilienceai-techstack-identification/SKILL.md https://app.decimal.ai/s/transilienceai-techstack-identification/SKILL.md

Raw file: /s/transilienceai-techstack-identification/SKILL.md ↗ · machine-readable summary at /s/transilienceai-techstack-identification.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 10 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 10

Prompt

What rate threshold applies when querying the Wayback Machine CDX API for historical snapshot records?

What was checked, without and with the skill
Checked	Without skill	With skill
Enforces a maximum rate limit of 15 requests per minute for Wayback CDX queries.	Missed	Passed

case-18 · gemini-3.6-flash · 8/18/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md63 linessingle file

Tech Stack Identification

Passive OSINT reconnaissance to identify a target's technology stack. No credentials, no active scanning — only publicly available signals.

Quick Start

1. Provide company name (+ optional domain hint)
2. Run infra first (asset inventory) → frontend / backend / security / osint in parallel
3. Pass all signals into correlation → final report (JSON + Markdown)

Domain Sub-Skills

Sub-skill	Identifies	Read
frontend	JS frameworks, meta-frameworks, CSS libraries, build tools, CMS via DOM/HTML/JS	frontend/SKILL.md
backend	Web servers, runtimes, languages, frameworks, DB, APIs, CMS	backend/SKILL.md
infra	Cloud, CDN/WAF, DNS, TLS/CT, DevOps, asset discovery (domains/subdomains/IPs)	infra/SKILL.md
security	Security headers, CSP, email auth, security.txt, third-party SaaS	security/SKILL.md
osint	Public repos (GitHub/GitLab), job postings/ATS, Wayback Machine	osint/SKILL.md
correlation	Cross-validation, confidence scoring, conflict resolution	correlation/SKILL.md

Routing by Objective

Objective	Mount
Full stack discovery	infra → (frontend, backend, security, osint) → correlation
CDN/WAF identification only	infra
API surface mapping	backend
Supply-chain / SaaS exposure	security + osint
CVE matching by version	backend + frontend (then correlation)
Migration / historical context	osint (web archive) + correlation
CMS fingerprint	frontend (HTML generators) + backend (CMS paths/cookies)
Asset inventory only	infra (domain discovery, subdomain enum, IP attribution, CT)

Confidence Levels

High: 3+ independent sources OR explicit identifier (header/meta/global) + supporting evidence + version known
Medium: Single strong source OR multiple indirect signals (URL patterns, cookies, DOM attrs, job postings)

Track record

Benchmark

19 / 22

test cases passed, vs 9 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

transilienceai / communitytools

skills/techstack-identification/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

transilienceai/techstack-backendBackend tech-stack identification — web servers, runtimes, languages, frameworks, databases, APIs, and CMS via HTTP headers, cookies, error pages, and API discovery.Close match+5 pp pass-rate lift

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Tech Stack Identification

Quick Start

Domain Sub-Skills

Routing by Objective

Confidence Levels

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

Related skills