dynamic-application-security-testing

dynamic-application-security-testing is a skill for Claude Code, Codex from seb1n/awesome-ai-agent-skills. It costs 43 tokens per session (2,271 once invoked), scanned A, original, MIT.

A security test that probes a running web application or API with crafted requests and varied inputs. Dynamic application security testing, or DAST, checks the application's behavior while it is operating.

In plain words
What is it for?
Use it to test websites, single-page applications, REST APIs, and GraphQL APIs, including authenticated areas, and produce remediation reports.
Why use it?
It can reveal weaknesses that only appear during real requests, such as injection, broken authentication, or unsafe API behavior.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to test websites, single-page applications, REST APIs, and GraphQL APIs, including authenticated areas, and produce remediation reports.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/seb1n/awesome-ai-agent-skills/dynamic-application-security-testing
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 seb1n/awesome-ai-agent-skills --skill dynamic-application-security-testing
Clone the repo
git clone --depth 1 https://github.com/seb1n/awesome-ai-agent-skills

Made for: Claude Code, Codex.

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 dynamic-application-security-testing

README.md
[![agentmods](https://agentmods.dev/badge/skills/seb1n/awesome-ai-agent-skills/dynamic-application-security-testing/github.svg)](https://agentmods.dev/skills/seb1n/awesome-ai-agent-skills/dynamic-application-security-testing)
Your own site
<a href="https://agentmods.dev/skills/seb1n/awesome-ai-agent-skills/dynamic-application-security-testing"><img src="https://agentmods.dev/badge/skills/seb1n/awesome-ai-agent-skills/dynamic-application-security-testing/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 dynamic-application-security-testing

Your own site · 80×15
<a href="https://agentmods.dev/skills/seb1n/awesome-ai-agent-skills/dynamic-application-security-testing"><img src="https://agentmods.dev/badge/skills/seb1n/awesome-ai-agent-skills/dynamic-application-security-testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,271 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium MCP Rug Pull · line 53
    Docker image references without a specific tag (:latest is implicit) or digest (@sha256:...) can be silently replaced by a malicious image.
    Fix: Pin the image: image:tag or image@sha256:abc123
  • low Tool Misuse · line 53
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
How audits are shown
Origin original 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 $0.00043 $0.02271
Opus 5 $0.00022 $0.01136
Sonnet 5 $0.00009 $0.00454
Haiku 4.5 $0.00004 $0.00227

Measured 6d ago against content hash c25cc0333255, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

dynamic-application-security-testing scanned grade A with 0 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 6d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

security/dynamic-application-security-testing/SKILL.md · 170 lines

How it starts

The opening of the file, as written. The whole thing — 170 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Dynamic Application Security Testing

This skill enables the agent to perform Dynamic Application Security Testing (DAST) against running web applications and APIs. Unlike static analysis, DAST interacts with the application at runtime — sending crafted HTTP requests, fuzzing input parameters, and analyzing responses to detect vulnerabilities such as SQL injection, cross-site scripting, server misconfigurations, broken authentication, and insecure API endpoints. The agent configures scan profiles, handles authenticated scanning, interprets results, and produces actionable remediation reports.

Workflow

  1. Define Target Scope and Scan Policy — Specify the target URL, application type (traditional web app, SPA, REST API, GraphQL), and scan boundaries. Define which paths and domains are in scope to prevent scanning unintended targets. Select a scan policy: passive-only for low-risk reconnaissance, active for full vulnerability probing, or API-specific for endpoint fuzzing.

  2. Configure Authentication — For applications behind a login, configure the scanner with valid credentials or session tokens. Set up form-based authentication by specifying the login URL, username/password fields, and a logged-in indicator string. For API testing, configure Bearer tokens, API keys, or OAuth flows so the scanner can reach authenticated endpoints.

  3. Execute the DAST Scan — Launch the scan using the selected tool (OWASP ZAP, Burp Suite, or Nuclei). The scanner first spiders the application to discover endpoints, then actively probes each endpoint with attack payloads. Monitor scan progress and resource consumption to avoid overwhelming the target environment.

  4. Analyze and Classify Findings — Review scan results and classify each finding by vulnerability type, severity (using CVSS), confidence level, and affected URL. Filter out informational noise and false positives by verifying that the reported response actually demonstrates the vulnerability.

  5. Generate Remediation Report — Produce a structured report containing each finding with the vulnerable URL, HTTP request/response evidence, severity rating, CWE identifier, OWASP category mapping, and specific remediation guidance. Export in HTML, JSON, or SARIF format for integration with issue trackers.

Read the full file on GitHub · 170 lines

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. 6d ago First seen · 170 lines · 43 tokens per session scan A c25cc0333255

Subscribe to this mod's changes

dynamic-application-security-testing is a skill published in the GitHub repository seb1n/awesome-ai-agent-skills (179 stars, last pushed 1mo ago), licensed MIT. It adds 43 tokens to every session and 2,271 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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