request-smuggling

request-smuggling is a skill for Claude Code, Codex from NeoTheCapt/RedteamAgent. It costs 20 tokens per session (997 once invoked), scanned A, original, no licence file.

A guide for testing HTTP request smuggling, where different web servers interpret the same request boundaries differently, including CL.TE and TE.CL cases.

In plain words
What is it for?
Use it to test for request desynchronization and cache-poisoning risks in web server chains.
Why use it?
It helps find disagreements between front-end and back-end servers that can affect other users' requests or web caches.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/neothecapt/redteamagent/request-smuggling
Any agent
npx skills add NeoTheCapt/RedteamAgent --skill request-smuggling
Clone the repo
git clone --depth 1 https://github.com/NeoTheCapt/RedteamAgent

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 request-smuggling

README.md
[![agentmods](https://agentmods.dev/badge/skills/neothecapt/redteamagent/request-smuggling.svg)](https://agentmods.dev/skills/neothecapt/redteamagent/request-smuggling)
Your own site
<a href="https://agentmods.dev/skills/neothecapt/redteamagent/request-smuggling"><img src="https://agentmods.dev/badge/skills/neothecapt/redteamagent/request-smuggling.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 997 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin unknown 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 $0.00020 $0.00997
Opus 5 $0.00010 $0.00498
Sonnet 5 $0.00004 $0.00199
Haiku 4.5 $0.00002 $0.00100

Measured 4d ago against content hash 3a0ced7cecbb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

request-smuggling scanned grade A with 1 finding 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 4d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- `run_tool curl` (raw request crafting)
agent/skills/request-smuggling/SKILL.md · 124 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 4d ago First seen · 124 lines · 20 tokens per session scan A 3a0ced7cecbb

Subscribe to this mod's changes

request-smuggling is a skill published in the GitHub repository NeoTheCapt/RedteamAgent (122 stars, last pushed 1mo ago), with no licence file. It adds 20 tokens to every session and 997 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

performing-api-security-testing-with-postman

Uses Postman to perform structured API security testing by building collections that test for OWASP API Security Top 10 vulnerabilities including authentication bypass, authorization flaws, injection, and data exposure. The tester creates environments with multiple user roles, writes test scripts for automated…

xalgorix/xalgorix · 106 tokens

performing-api-fuzzing-with-restler

Uses Microsoft RESTler to perform stateful REST API fuzzing by automatically generating and executing test sequences that exercise API endpoints, discover producer-consumer dependencies between requests, and find security and reliability bugs. The tester compiles an OpenAPI specification into a RESTler fuzzing…

xalgorix/xalgorix · 123 tokens

opencode-pentester

Coordinate penetration testing and AI self-code audits via schema-enforced, event-driven engine. All attack categories, domains, tools, and checklists are stored in SQLite (findings.db) and loaded JIT by engine/router.py.

humaidhahm/opencode-pentester · 52 tokens

pentest

Coordinate penetration testing. Deploy executors, aggregate results, generate reports.

humaidhahm/opencode-pentester · 0 tokens

solopi-ai

通过 SoloPi 的机器可读 CLI 编译和执行 AI 验证计划,管理签名端侧 ExecuTorch 决策模型、持久设备池、无人值守任务、安卓设备、应用、动作、配置、用例步骤与交互录制、回放及性能历史、动态 Agent、批量与重复执行、性能监控、压力测试和证据。适用于需求/AC 到 Result Judge 三态结论、cloud/on-device 决策切换、模型发布门禁,以及 generation 租约的多设备 CI 执行。.

alipay/SoloPi · 127 tokens

bugcrowd-reporting

Bugcrowd-specific reporting tactics complementing report-writing: VRT category search-and-fallback strategy when no exact match exists, manual severity override when VRT defaults underrate impact, severity-request paragraph as first body section, OOS-clause rebuttal templates (rate limiting on auth-flow endpoints…

elementalsouls/Claude-BugHunter · 171 tokens