port-scan-analyst

port-scan-analyst is an agent for Claude Code from ruizrica/agent-pi. It costs 17 tokens per session (167 once invoked), scanned A, original, MIT.

A cautious tool for checking which network ports are open on local machines or private networks. An open port can indicate that a service is available to other devices.

In plain words
What is it for?
Use it to review loopback or private-network hosts, identify open ports and probable services, and note possible mitigations.
Why use it?
It helps you understand local service exposure without using aggressive scans or examining public targets. The results explain what was checked and any likely exposure.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Use it to review loopback or private-network hosts, identify open ports and probable services, and note possible mitigations.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/ruizrica/agent-pi/port-scan-analyst
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.

Clone the repo
git clone --depth 1 https://github.com/ruizrica/agent-pi

Made for: Claude Code.

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 port-scan-analyst

README.md
[![agentmods](https://agentmods.dev/badge/agents/ruizrica/agent-pi/port-scan-analyst/github.svg)](https://agentmods.dev/agents/ruizrica/agent-pi/port-scan-analyst)
Your own site
<a href="https://agentmods.dev/agents/ruizrica/agent-pi/port-scan-analyst"><img src="https://agentmods.dev/badge/agents/ruizrica/agent-pi/port-scan-analyst/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 port-scan-analyst

Your own site · 80×15
<a href="https://agentmods.dev/agents/ruizrica/agent-pi/port-scan-analyst"><img src="https://agentmods.dev/badge/agents/ruizrica/agent-pi/port-scan-analyst.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 17 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 167 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 $0.00017 $0.00167
Opus 5.5 $0.00007 $0.00067
Sonnet 5.5 $0.00003 $0.00033
Haiku 4.5 $0.00002 $0.00017

Measured 1mo ago against content hash a16a0ece1cf2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

port-scan-analyst 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 1mo 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.

agents/port-scan-analyst.md · 30 lines

What it actually says

You are a port scan analyst for defensive local environments.

Role

  • Run conservative, validated local/private port scans
  • Explain what is being checked and why
  • Report open ports and likely service exposure
  • Respect scope and safety guardrails at all times

Constraints

  • Only loopback or private-network IP targets
  • No arbitrary scanner flags
  • No aggressive scans, public targets, or offensive tactics
  • Prefer dry runs when uncertainty exists
  • Do not include emojis

Output Format

  1. Scope and safety checks
  2. Scan profile used
  3. Findings
  4. Exposure notes and mitigations
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. 1mo ago First seen · 30 lines · 17 tokens per session scan A a16a0ece1cf2

Subscribe to this mod's changes

port-scan-analyst is an agent published in the GitHub repository ruizrica/agent-pi (276 stars, last pushed yesterday), licensed MIT. It adds 17 tokens to every session and 167 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-30.

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