traffic-proxy

traffic-proxy is a skill for Claude Code, Codex from Roshu18/bearstrike-ai. It costs 24 tokens per session (373 once invoked), scanned A, original, MIT.

A guide for manually testing web requests and responses with mitmproxy and OWASP ZAP, tools that can capture and change traffic between a client and a website.

In plain words
What is it for?
It is for checking login and session flows, role changes, checkouts, trusted headers, and other business-logic behavior on authorized targets.
Why use it?
It helps investigate suspicious workflows that automated scans cannot prove, especially when the order or state of requests matters.

Skill for Claude CodeCodex

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

Good fit It is for checking login and session flows, role changes, checkouts, trusted headers, and other business-logic behavior on authorized targets.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/roshu18/bearstrike-ai/traffic-proxy
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 Roshu18/bearstrike-ai --skill traffic-proxy
Clone the repo
git clone --depth 1 https://github.com/Roshu18/bearstrike-ai

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 traffic-proxy

README.md
[![agentmods](https://agentmods.dev/badge/skills/roshu18/bearstrike-ai/traffic-proxy.svg)](https://agentmods.dev/skills/roshu18/bearstrike-ai/traffic-proxy)
Your own site
<a href="https://agentmods.dev/skills/roshu18/bearstrike-ai/traffic-proxy"><img src="https://agentmods.dev/badge/skills/roshu18/bearstrike-ai/traffic-proxy.svg" alt="Measured on agentmods" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 373 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 $0.00024 $0.00373
Opus 5 $0.00012 $0.00187
Sonnet 5 $0.00005 $0.00075
Haiku 4.5 $0.00002 $0.00037

Measured 7d ago against content hash 7ebc107e46f4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

traffic-proxy 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 7d 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/traffic-proxy/SKILL.md · 47 lines

What it actually says

traffic-proxy

Use this skill when automated scans find a suspicious workflow but proof needs manual request mutation.

Core tools

  • mitmproxy / mitmdump: lightweight CLI interception and Python scripting.
  • zaproxy / zap-cli: baseline active checks + scripting-friendly automation.

When to use

  • Session/auth workflow inconsistencies (invite, verify-otp, role change, checkout flow).
  • Business logic checks where endpoint order/state matters.
  • Header trust-boundary testing (custom auth blobs, forwarded headers, rewrite headers).

Safe execution guidance

  • Run proxies only on authorized targets and in scoped windows.
  • Start with read-only capture before mutation.
  • Keep request rate low under WAF/rate-limit pressure.
  • Prefer replaying one request class at a time with strict evidence notes.

mitmproxy quick patterns

  • Capture mode: mitmdump --listen-host 127.0.0.1 --listen-port 8081 --set flow_detail=1
  • Save flows: mitmdump -w reports/output/<target>/mitm.flow
  • Replay selected flow IDs after controlled modifications.

ZAP quick patterns

  • Quick baseline: zaproxy -cmd -quickurl https://<target> -quickprogress
  • Scripted run: zap-cli quick-scan --self-contained --spider https://<target>
  • Use constrained scans first; avoid broad active scans until recon confidence is high.

Evidence contract

For each proxy-assisted finding, capture:

  • Original request and response
  • Mutated request and response
  • Boundary violated (auth, role, object ownership, state transition)
  • Reproducible minimal steps
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. 7d ago First seen · 47 lines · 24 tokens per session scan A 7ebc107e46f4

Subscribe to this mod's changes

traffic-proxy is a skill published in the GitHub repository Roshu18/bearstrike-ai (4 stars, last pushed 5mo ago), licensed MIT. It adds 24 tokens to every session and 373 once invoked, about $0.0001 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 2026-08-31.

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