Blackjack Helper

Blackjack (21点) decision assistant. Provides optimal action recommendations based on player's hand and dealer's upcard: Hit, Stand, Double, Split, Surrender....

Security Scan

This is an instruction-only Blackjack decision assistant that asks for no credentials, installs nothing, and its instructions are consistent with its stated purpose.

Purpose & Capability

The skill name and description match the SKILL.md content: a Blackjack strategy guide that outputs Hit/Stand/Double/Split/Surrender recommendations. It does not request unrelated binaries, environment variables, or credentials.

Instruction Scope

SKILL.md contains only strategy tables, usage examples, supported languages, and how to provide the player's hand and dealer upcard. It does not instruct reading files, accessing system state, or transmitting data to external endpoints.

Install Mechanism

No install spec is present and no code files exist. This is the lowest-risk model: nothing is written to disk or fetched at install time.

Credentials

The skill declares no required environment variables, credentials, or config paths, which is proportional for a local decision assistant that only needs the user's textual input.

Persistence & Privilege

always is false and the skill is user-invocable. It does not request persistent or elevated privileges, nor does it modify other skills or system settings.

Assessment

This skill is internally consistent and doesn't ask for secrets or install anything. Before installing, consider that (1) the guide provides deterministic recommendations and is not a guarantee of winning outcomes, (2) gambling carries financial risk and you should use the tool responsibly, and (3) if you require up-to-date or venue-specific strategy (e.g., rules that affect doubling/splitting), verify the strategy against the house rules — the SKILL.md is static text and may not reflect every casino variant.

Blackjack Strategy Guide

Provides optimal action recommendations based on mathematical probability.

Decision Rules

Hard Totals (A counts as 1)

Player Total	Dealer 2-6	Dealer 7-10	Dealer A
8 or less	Hit	Hit	Hit
9	Double	Hit	Hit
10	Double	Double	Double
11	Double	Double	Hit
12-16	Stand	Hit	Hit
17+	Stand	Stand	Stand

Soft Totals (A counts as 11)

Player Hand	Dealer 2-6	Dealer 7-A
A,2-6	Hit	Hit
A,7	Stand	Hit
A,8-9	Stand	Stand

Pairs

Pair	Dealer 2-6	Dealer 7-A
A-A	Split	Split
8-8	Split	Split
9-9	Split	Stand
7-7	Split	Hit
2-2, 3-3, 6-6	Split	Hit
4-4, 5-5, 10-10	Don't split	Don't split

How to Use

Provide:

• Player's hand (e.g., 15, soft 17, pair of 8s)
• Dealer's upcard (e.g., dealer 7, dealer Q)

Recommendations:

• Hit = Take another card
• Stand = Keep current hand
• Double = Double bet, get exactly one more card
• Split = Split pair into two hands
• Surrender = Forfeit half bet (first decision only)

Examples

"Player 15, dealer 7" → Recommend: Hit (12-16 vs 7-A)

"Pair of A's, dealer 6" → Recommend: Split

"Soft 18, dealer 9" → Recommend: Stand

"Player 11, dealer A" → Recommend: Hit

Supported Languages

Language	21点 Expression	Keywords
English	Twenty-one	blackjack, hit, stand, double, split
中文	二十一点	21点、要牌、停牌
日本語	ブラックジャック	ヒット、スタンド
Français	Vingt-et-un	tirer, rester, doubler
Español	Veintiuno	pedir, plantarse