dos

dos is a skill for Claude Code, Codex from sanjaysaini1952/BugBounty-Arsenal. It costs 0 tokens per session (284 once invoked), scanned A, original, MIT.

A checklist for testing whether a service can be overwhelmed by specially crafted requests. Denial of service means making a system slow or unavailable by consuming too many of its resources.

In plain words
What is it for?
Use it to test slow regular-expression processing, large or deeply nested payloads, oversized uploads, connection limits, memory use, and rate-limit bypasses.
Why use it?
It helps identify weak limits around regular expressions, uploads, connections, memory, large inputs, and API requests before attackers can exploit them.

Skill for Claude CodeCodex

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

Good fit Use it to test slow regular-expression processing, large or deeply nested payloads, oversized uploads, connection limits, memory use, and rate-limit bypasses.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sanjaysaini1952/bugbounty-arsenal/dos
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 sanjaysaini1952/BugBounty-Arsenal --skill dos
Clone the repo
git clone --depth 1 https://github.com/sanjaysaini1952/BugBounty-Arsenal

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 dos

README.md
[![agentmods](https://agentmods.dev/badge/skills/sanjaysaini1952/bugbounty-arsenal/dos/github.svg)](https://agentmods.dev/skills/sanjaysaini1952/bugbounty-arsenal/dos)
Your own site
<a href="https://agentmods.dev/skills/sanjaysaini1952/bugbounty-arsenal/dos"><img src="https://agentmods.dev/badge/skills/sanjaysaini1952/bugbounty-arsenal/dos/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 dos

Your own site · 80×15
<a href="https://agentmods.dev/skills/sanjaysaini1952/bugbounty-arsenal/dos"><img src="https://agentmods.dev/badge/skills/sanjaysaini1952/bugbounty-arsenal/dos.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 284 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.
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 $0.00000 $0.00284
Opus 5 $0.00000 $0.00142
Sonnet 5 $0.00000 $0.00057
Haiku 4.5 $0.00000 $0.00028

Measured 11d ago against content hash 9545e0679b16, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

dos 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 11d 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.

skills/hunting/dos/SKILL.md · 32 lines

What it actually says

Denial of Service Hunting Skill — 6 Test Cases

Load when: DoS, denial of service, resource exhaustion, amplification.

301. ReDoS (Regular Expression Denial of Service) (easy)

Send crafted input that causes catastrophic backtracking: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa! to regex. Report if response time >5s.

302. Algorithmic complexity attack (medium)

Send input that triggers worst-case O(n²) or O(2^n) behavior: deeply nested JSON, long strings, many keys.

303. Resource exhaustion via upload (easy)

Upload very large files (1GB+). Check if server processes entire file before rejecting. Report bandwidth amplification.

304. Connection exhaustion (medium)

Open many connections without completing handshake. Check if server limits concurrent connections.

305. Memory exhaustion (medium)

Send very large JSON/XML payloads, deeply nested objects, many parameters. Report memory consumption.

306. API rate limiting bypass (medium)

Test rate limiting with: different IPs, X-Forwarded-For, rotating User-Agent, distributed requests.


DoS Detection

Indicator Description
Slow response High CPU/memory usage
Timeouts Resource exhaustion
Connection refused Connection limit reached
502/503 errors Backend overwhelmed
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. 11d ago First seen · 32 lines · 0 tokens per session scan A 9545e0679b16

Subscribe to this mod's changes

dos is a skill published in the GitHub repository sanjaysaini1952/BugBounty-Arsenal (2 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 284 tokens. 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 2026-08-31.

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