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Security Posture & Third-Party Tech-Stack · transilienceai | DecimalAI

securityby transilienceai

Security Posture & Third-Party Tech-Stack

transilienceai/techstack-security

Source transilienceai/communitytools ↗License MIT

Security-posture and third-party SaaS identification — security headers, CSP, HSTS, email auth, security.txt, plus payments/analytics/auth/CRM/support integrations.

SkillScore95Maintained

Automatic

Security & AppSec pack

Last verified 8/18/2026

What it changes

Passed 21 of 22 test cases with the skill, and 19 of 22 without it.

Without skill86%

With skill95%

Checks it passed that the model alone missed

Identifies Intercom's integration mode as client SDK
Flags unsafe Content Security Policy directives such as 'unsafe-inline' or 'unsafe-eval' as security risks
Evaluates DMARC policy enforcement levels such as p=none, p=quarantine, and p=reject in the email authentication breakdown

and 1 more in the full report

3 fixed18 passed either way0 still failing1 broke

Pass-rate lift: +9 pp
Tokens: +12%
Agent turns: 0%
Response time: +0%

Model gemini-3.6-flashMeasured 8/18/2026v121 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-security/SKILL.md https://app.decimal.ai/s/transilienceai-techstack-security/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add transilienceai-techstack-security, 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-security/ and pins it in .decimal/skills.lock

decimalai skills add transilienceai-techstack-security

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

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

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

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 3 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 3

Prompt

A target website includes the Intercom messenger snippet script loading 'https://widget.intercom.io/widget/app_id'. Determine the SaaS vendor category and integration mode.

What was checked, without and with the skill
Checked	Without skill	With skill
Identifies Intercom's integration mode as client SDK	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.md36 linessingle file

Security Posture & Third-Party Tech-Stack

Scope

Two related lenses on a target:

Security posture — HTTP security headers, Content Security Policy, HSTS, email auth (SPF/DKIM/DMARC/MTA-STS), security.txt, certificate practices.
Third-party / SaaS detection — payment processors, analytics, customer support, identity providers, CRM/marketing, error monitoring, A/B testing, social/communication SDKs, media CDNs.

The two are coupled: CSP script-src and DNS TXT verifications reveal third-party services, while third-party domains contribute to the overall security surface.

Signals (input)

HTTP response headers — security headers, CSP directives, HSTS
DNS TXT records — SPF, DKIM, DMARC, SaaS verification tokens
HTML — meta-tag security policies, embedded widgets/iframes
Loaded JS / script-src URLs and globals
/.well-known/security.txt, /security.txt, /.well-known/change-password

Inferences (output)

Security score (header coverage, CSP strength, email-auth strength, security.txt presence)
CSP analysis (unsafe-inline/eval issues, allowed third-party domains)
Email-auth grade (DMARC policy strength)
Third-party SaaS catalogue by category, with integration mode (client SDK vs CSP-only vs DNS-only)

Techniques

See reference/patterns.md.

When to use

Pre-engagement security baseline
Mapping supply-chain / SaaS exposure
Identifying integrations that grant pivot opportunities (Auth0, Stripe webhook surface, Sentry DSN leakage, etc.)
Phase 3 of tech-stack OSINT

Track record

Benchmark

21 / 22

test cases passed, vs 19 / 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/security/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.

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

Security Posture & Third-Party Tech-Stack

Scope

Signals (input)

Inferences (output)

Techniques

When to use

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

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