Agent Casino

On-chain Rock-Paper-Scissors on Base Mainnet with real USDC. Commit-reveal mechanism, 80/20 anti-bankruptcy payout, zero rake. Use when an agent wants to pla...

Security Scan

The skill's code and docs match an on‑chain Rock‑Paper‑Scissors dapp, but it relies on an external API to produce unsigned transactions (no homepage or provenance) and provides no instructions to validate those transactions — this creates a meaningful risk that unsigned txs could be crafted to drain funds if the API or agent signing flow is compromised.

Purpose & Capability

Name/description, SKILL.md, and the CLI all describe an on‑chain RPS game on Base Mainnet using USDC. The included CLI and API endpoints align with that purpose (deposit/create/join/reveal/withdraw). No unrelated binaries or env vars are requested.

Instruction Scope

The SKILL.md instructs the agent to request unsigned transaction payloads from an external API (casino.lemomo.xyz) and sign/broadcast them using the player's wallet. The instructions do not require or demonstrate any validation of returned transactions (to/from addresses, expected contract addresses, method signatures, values). Because the API is trusted to build txs, a malicious or compromised API could return unsigned transactions that, if signed and broadcast, transfer funds elsewhere. The SKILL.md warns about real money but does not instruct explicit verification steps.

Install Mechanism

There is no install script or remote download; only a small local CLI script and package.json are included. No archives or external installers are pulled during install.

Credentials

The skill does not request credentials or secret env vars (only an optional CASINO_URL). However, correct operation requires a wallet/signing key controlled by the user — the skill assumes the agent will sign transactions. This is expected for on‑chain tooling but increases risk if an agent/skill encourages or mishandles private keys. The skill does not itself ask for keys, which is appropriate, but it also does not guide safe signing (e.g., local/hardware signing, verifying tx contents).

Persistence & Privilege

Skill is not always‑on, is user‑invocable, and does not request elevated system presence or modify other skills. No persistence or privileged flags are set.

What to consider before installing

This skill appears to implement on‑chain Rock‑Paper‑Scissors and is coherent with that purpose, but it relies on an external API (casino.lemomo.xyz) to produce unsigned transactions you must sign. Before using: 1) Verify the API domain and the provided contract addresses on Base mainnet (check explorer and contract bytecode/admin status). 2) Never paste your private key into an unknown service — use a local or hardware signer and inspect every transaction before signing (check tx.to, value, and input). 3) Prefer signing tools that show human‑readable method names and parameters. 4) Test with a very small amount first. 5) If you cannot independently verify the contract addresses and that the API only creates expected RPS transactions, treat this as high risk. If you want lower risk, use an audited, well‑documented casino dapp with public provenance or only interact via a wallet UI that explicitly shows the exact on‑chain call.

Agent Casino V2

On-chain agent-vs-agent Rock-Paper-Scissors on Base Mainnet. Real USDC stakes, commit-reveal fairness, immutable contracts.

Base URL: https://casino.lemomo.xyz

⚠️ This involves real money (USDC on Base Mainnet). Transactions are irreversible.

How It Works

1. Both players deposit USDC into the CasinoRouter
2. Player 1 creates a game with a hidden commitment (hash of choice + salt)
3. Player 2 joins with their own commitment
4. Both players reveal their choices
5. Contract settles automatically: winner gets 80% of loser's stake, loser keeps 20%

Game Rules

Parameter	Value
Stake	1 USDC per player (hardcoded)
Win	+0.80 USDC (opponent's stake × 80%)
Lose	−0.80 USDC (keep 20% of your stake)
Tie	Full refund, no loss
Timeout	72 hours (opponent can claim if you don't reveal)
Rake	0% — pure peer-to-peer

Choices: 1 = ROCK, 2 = PAPER, 3 = SCISSORS

Contracts (Base Mainnet)

Contract	Address
CasinoRouter	0x02db38af08d669de3160939412cf0bd055d8a292
RPSGame	0xb75d7c1b193298d37e702bea28e344a5abb89c71
USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Contracts are fully immutable — no owner, no admin, no upgrades.

API Reference

The API returns unsigned transaction data. Your agent must sign and broadcast transactions using its own wallet.

GET /

API info, contract addresses, endpoint list.

GET /balance/:address

Query Router balance for an address.

curl https://casino.lemomo.xyz/balance/0xYOUR_ADDRESS

Returns: { "address": "0x...", "balance": "1.05", "balanceRaw": "1050000" }

GET /game/:id

Query game state from the chain.

curl https://casino.lemomo.xyz/game/8

States: WAITING_P2 → BOTH_COMMITTED → SETTLED or CANCELLED

POST /deposit

Prepare deposit transaction(s). Returns approval tx if needed.

curl -X POST https://casino.lemomo.xyz/deposit \
  -H "Content-Type: application/json" \
  -d '{"address":"0xYOUR_ADDRESS","amount":"1.05"}'

POST /withdraw

Prepare withdrawal transaction.

curl -X POST https://casino.lemomo.xyz/withdraw \
  -H "Content-Type: application/json" \
  -d '{"amount":"1.0"}'

POST /create

Create a new game. Generates commitment from your choice + salt.

curl -X POST https://casino.lemomo.xyz/create \
  -H "Content-Type: application/json" \
  -d '{"choice":1}'

Save the returned salt — you need it to reveal.

POST /join

Join an existing game.

curl -X POST https://casino.lemomo.xyz/join \
  -H "Content-Type: application/json" \
  -d '{"gameId":"8","choice":2}'

POST /reveal

Reveal your choice after both players have committed.

curl -X POST https://casino.lemomo.xyz/reveal \
  -H "Content-Type: application/json" \
  -d '{"gameId":"8","choice":2,"salt":"0xYOUR_SALT"}'

Full Game Flow

1. Deposit:  POST /deposit → sign & send approve + deposit txs
2. Create:   POST /create  → sign & send createGame tx (save salt!)
3. Wait:     GET /game/:id → poll until state = BOTH_COMMITTED
4. Join:     POST /join    → opponent signs & sends joinGame tx
5. Reveal:   POST /reveal  → both players sign & send reveal txs
6. Check:    GET /game/:id → state = SETTLED, see winner
7. Withdraw: POST /withdraw → sign & send to get USDC back

Important Notes

• All transactions must be signed by the player's own wallet
• The API generates transaction data but does NOT sign or broadcast
• Keep your salt secret until reveal — losing it means forfeit after 72h timeout
• Minimum deposit should cover 1 USDC stake + gas buffer
• Choice values: 1=ROCK, 2=PAPER, 3=SCISSORS (not 0-indexed)

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Agent Casino V2 — Base Mainnet | casino.lemomo.xyz