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badchars

wifi-security-mcp-server

by badchars

analyze_nfc_security

Identify NFC/RFID card types via SAK/ATQA, lookup known attacks, get step-by-step cloning guides, and receive tailored security defense recommendations.

Instructions

NFC/RFID security analysis — card identification, attack lookup, cloning guides (Mifare, HID, EM4100), EMV relay analysis, defense recommendations.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
sakNo[identify_card] SAK value as hex string (HF cards)
atqaNo[identify_card] ATQA value as hex string (HF cards)
modeYesOperation mode: lookup_attack (by ID), search_attacks (by criteria), identify_card (from scan params), clone_guide (step-by-step cloning), defense (security recommendations)
categoryNo[search_attacks] Filter by attack category
protocolNo[search_attacks] Filter by protocol name (e.g. 'Mifare', 'HID', 'EM4100')
attack_idNo[lookup_attack] NFC/RFID attack ID (e.g. 'mifare_classic_darkside', 'emv_relay', 'lf_clone')
card_typeNo[clone_guide] Card type to clone
data_rateNo[identify_card] Data rate for LF cards
frequencyNo[search_attacks] Filter by frequency (e.g. '125 kHz', '13.56 MHz')
deploymentNo[defense] Deployment type for defense recommendations
known_keysNo[clone_guide] Known sector keys as comma-separated hex (for Mifare Classic)
modulationNo[identify_card] Modulation type for LF cards
uid_lengthNo[identify_card] UID length in bytes
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden. It implies a read/analyze tool but does not explicitly state that it is non-destructive or disclose any permissions, rate limits, or side effects. The modes suggest lookups and guides, which are typically safe, but not explicit.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single sentence that efficiently captures the tool's scope. It is front-loaded and concise, though slightly dense with bullet-style lists.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (13 parameters, multiple modes), the description provides a useful summary but lacks detail on how to use each mode or which parameters are needed for each. However, the schema fills in the gaps, so overall it is minimally complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the description does not need to add much about parameters. It provides a high-level overview but no additional detail beyond what the schema already covers. Baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it is for NFC/RFID security analysis, listing specific capabilities like card identification, attack lookup, cloning guides, and defense recommendations. It distinguishes itself from siblings which are primarily WiFi and Bluetooth tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage for NFC/RFID security tasks but does not explicitly state when to use it over alternatives. The mode parameter provides some guidance, but there are no when-not or alternative tool mentions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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