# Techstack Security

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

- **Type:** Skill
- **Install:** `agentstack add skill-transilienceai-communitytools-security`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [transilienceai](https://agentstack.voostack.com/s/transilienceai)
- **Installs:** 0
- **Category:** [Data & Analytics](https://agentstack.voostack.com/c/data-and-analytics)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [transilienceai](https://github.com/transilienceai)
- **Source:** https://github.com/transilienceai/communitytools/tree/main/skills/techstack-identification/security
- **Website:** https://www.transilience.ai/

## Install

```sh
agentstack add skill-transilienceai-communitytools-security
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Security Posture & Third-Party Tech-Stack

## Scope

Two related lenses on a target:

1. **Security posture** — HTTP security headers, Content Security Policy, HSTS, email auth (SPF/DKIM/DMARC/MTA-STS), `security.txt`, certificate practices.
2. **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](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

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [transilienceai](https://github.com/transilienceai)
- **Source:** [transilienceai/communitytools](https://github.com/transilienceai/communitytools)
- **License:** MIT
- **Homepage:** https://www.transilience.ai/

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-transilienceai-communitytools-security
- Seller: https://agentstack.voostack.com/s/transilienceai
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.