darksol-random-oracle

name	darksol-random-oracle
description	Bankr-compatible skill for DARKSOL Random Oracle, an on-chain verifiable RNG API on Base. Use when an agent needs random numbers, coin flips, dice rolls, random sequences, shuffles, raffles, loot drops, games, simulations, casino mechanics, or auditable randomness. Supports DARKSOL holder free access and x402 USDC payments on Base.
metadata	{"bankr":{"category":"oracle","chains":["base"],"homepage":"https://acp.darksol.net/oracle","apiBase":"https://acp.darksol.net/oracle","payment":"x402-usdc-base"},"openclaw":{"emoji":"🎲"}}

DARKSOL Random Oracle

On-chain verifiable randomness for agents, games, raffles, simulations, and apps.

Bankr can use this skill when a user asks for fair random numbers, coin flips, dice rolls, shuffles, giveaway winners, loot outcomes, or any randomness that should be publicly auditable.

Service

• UI: https://acp.darksol.net/oracle
• API base: https://acp.darksol.net/oracle
• Chain: Base 8453
• Oracle contract: 0x4d2f471ae67b129bAda9cfC6224f0343c5C8fB5D
• DARKSOL token: 0x00cb1fbca324d51325a7264d54072bc073c28ba3
• x402 payment token: USDC on Base 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
• x402 pay-to: 0x8f9fa2bfd50079c1767d63effbfe642216bfcb01

When To Use

Use this skill for:

• coin flips
• dice rolls
• random integers
• random sequences
• shuffling a list
• raffle or giveaway winner selection
• loot tables and game outcomes
• simulation seeds
• casino/game mechanics that need verifiable RNG
• agent workflows that need proof-backed randomness with a Base transaction receipt

Do not use this skill for private key generation, wallet seed generation, passwords, cryptographic nonces, or secrets. The oracle returns public verifiable randomness, not private entropy.

Access Model

DARKSOL Holder Free Access

If the caller controls a wallet holding at least 10,000,000 DARKSOL on Base, calls are free.

The caller signs this exact message, replacing the wallet address:

DARKSOL Oracle free access
Wallet: 0xYourAgentWallet
Chain: Base (8453)
Purpose: prove token-holder access without payment

Send the proof headers:

x-darksol-wallet: 0xYourAgentWallet
x-darksol-signature: 0xSignature

x402 Paid Access

Without a valid holder proof, oracle endpoints require x402 payment:

• basic endpoints: $0.05 USDC on Base
• premium endpoints: $0.25 USDC on Base

A normal unauthenticated request returns HTTP 402 with payment requirements. Pay using an x402-compatible client, then retry with the x402 payment header.

Endpoints

Health

GET https://acp.darksol.net/oracle/health

Returns health, contract, block number, pricing, and free-access details.

Random Number

GET https://acp.darksol.net/oracle/random/number?min=1&max=100

Params:

• min: integer, default 1
• max: integer, default 10

Price: $0.05 or free for eligible DARKSOL holders.

Coin Flip

GET https://acp.darksol.net/oracle/random/coin

Returns heads or tails.

Price: $0.05 or free for eligible DARKSOL holders.

Dice Roll

GET https://acp.darksol.net/oracle/random/dice?sides=20&count=3

Params:

• sides: integer 2..1000, default 6
• count: integer 1..100, default 2

Price: $0.05 or free for eligible DARKSOL holders.

Random Sequence

GET https://acp.darksol.net/oracle/random/sequence?count=6&min=1&max=49

Params:

• count: integer 1..100, default 5
• min: integer, default 1
• max: integer, default 50

Price: $0.25 or free for eligible DARKSOL holders.

Shuffle

GET https://acp.darksol.net/oracle/random/shuffle?items=alice,bob,carol,dave

Params:

• items: comma-separated list with at least 2 items

Price: $0.25 or free for eligible DARKSOL holders.

Response Shape

{
  "result": 77,
  "access": {
    "mode": "x402_settled",
    "paymentRequired": true
  },
  "proof": {
    "txHash": "0x...",
    "blockNumber": 45168397,
    "contract": "0x4d2f471ae67b129bAda9cfC6224f0343c5C8fB5D",
    "chain": "base",
    "chainId": 8453
  },
  "timestamp": "2026-04-25T14:09:01.905Z"
}

Always surface the proof.txHash when reporting results to a user. That is the audit trail.

If the endpoint returns HTTP 202 with status: "pending", payment has settled but oracle confirmation exceeded the request window. Surface access.payment.transaction as the payment proof and pending.txHash as the oracle tx to check/retry shortly. Do not submit another payment just because the oracle response is pending.

Bankr Prompt Examples

Use DARKSOL Random Oracle to roll 3 d20 dice and show me the Base proof tx.

Use DARKSOL Random Oracle to pick a giveaway winner from alice,bob,carol,dave. Return the shuffled list and proof hash.

Use DARKSOL Random Oracle to generate 6 lottery numbers from 1 to 49 and include the on-chain verification link.

Flip a verifiable coin using DARKSOL Random Oracle.

Agent Procedure

1. Parse the user request into one endpoint and query params.
2. Prefer holder-free access if the user provides a wallet and signature.
3. Otherwise use x402 USDC payment on Base.
4. Call the endpoint.
5. Return the result plus the proof transaction link: https://basescan.org/tx/<txHash>
6. If the endpoint returns HTTP 402, complete the x402 payment flow and retry.
7. If the endpoint returns HTTP 202/status pending, report the payment tx and pending oracle tx; do not pay again.

Curl Examples

curl https://acp.darksol.net/oracle/health

curl "https://acp.darksol.net/oracle/random/number?min=1&max=100"

curl "https://acp.darksol.net/oracle/random/dice?sides=20&count=3"

curl "https://acp.darksol.net/oracle/random/shuffle?items=alice,bob,carol,dave"

Safety Notes

• Results are public and verifiable. Do not use for secrets.
• For regulated gambling, check jurisdictional requirements before use.
• For fairness-sensitive apps, store the returned proof tx with the application record.

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