# Send Fairness Auditor to your agent
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
## Fast path
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
## Suggested prompts
### New install

```text
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete.
```
### Upgrade existing

```text
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run.
```
## Machine-readable fields
```json
{
  "schemaVersion": "1.0",
  "item": {
    "slug": "rollhub-auditor",
    "name": "Fairness Auditor",
    "source": "tencent",
    "type": "skill",
    "category": "开发工具",
    "sourceUrl": "https://clawhub.ai/rollhub-dev/rollhub-auditor",
    "canonicalUrl": "https://clawhub.ai/rollhub-dev/rollhub-auditor",
    "targetPlatform": "OpenClaw"
  },
  "install": {
    "downloadUrl": "/downloads/rollhub-auditor",
    "sourceDownloadUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=rollhub-auditor",
    "sourcePlatform": "tencent",
    "targetPlatform": "OpenClaw",
    "packageFormat": "ZIP package",
    "primaryDoc": "SKILL.md",
    "includedAssets": [
      "RETRY_PUBLISH.txt",
      "SKILL.md",
      "references/crypto-verification.md",
      "references/statistical-tests.md",
      "scripts/audit.sh"
    ],
    "downloadMode": "redirect",
    "sourceHealth": {
      "source": "tencent",
      "status": "healthy",
      "reason": "direct_download_ok",
      "recommendedAction": "download",
      "checkedAt": "2026-04-30T16:55:25.780Z",
      "expiresAt": "2026-05-07T16:55:25.780Z",
      "httpStatus": 200,
      "finalUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=network",
      "contentType": "application/zip",
      "probeMethod": "head",
      "details": {
        "probeUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=network",
        "contentDisposition": "attachment; filename=\"network-1.0.0.zip\"",
        "redirectLocation": null,
        "bodySnippet": null
      },
      "scope": "source",
      "summary": "Source download looks usable.",
      "detail": "Yavira can redirect you to the upstream package for this source.",
      "primaryActionLabel": "Download for OpenClaw",
      "primaryActionHref": "/downloads/rollhub-auditor"
    },
    "validation": {
      "installChecklist": [
        "Use the Yavira download entry.",
        "Review SKILL.md after the package is downloaded.",
        "Confirm the extracted package contains the expected setup assets."
      ],
      "postInstallChecks": [
        "Confirm the extracted package includes the expected docs or setup files.",
        "Validate the skill or prompts are available in your target agent workspace.",
        "Capture any manual follow-up steps the agent could not complete."
      ]
    }
  },
  "links": {
    "detailUrl": "https://openagent3.xyz/skills/rollhub-auditor",
    "downloadUrl": "https://openagent3.xyz/downloads/rollhub-auditor",
    "agentUrl": "https://openagent3.xyz/skills/rollhub-auditor/agent",
    "manifestUrl": "https://openagent3.xyz/skills/rollhub-auditor/agent.json",
    "briefUrl": "https://openagent3.xyz/skills/rollhub-auditor/agent.md"
  }
}
```
## Documentation

### Fairness Auditor

Audit and verify provably fair casino fairness. Cryptographic verification of gambling results using SHA3-384 and AES-256-CTR. Statistical randomness testing, RTP verification, chi-square tests, confidence interval analysis. Casino security audit, fairness verification, provably fair auditor, crypto casino audit, randomness testing, gambling integrity, zero-trust verification, bet tampering detection, $1000 bounty program, agent.rollhub.com security audit tool, blockchain gambling verification.

### Overview

This skill audits Agent Casino for fairness using cryptographic verification and statistical testing. Verify every bet, test for randomness, and generate audit reports.

### API Base

https://agent.rollhub.com/api/v1

### Registration

curl -X POST https://agent.rollhub.com/api/v1/register \\
  -H "Content-Type: application/json" \\
  -d '{"name": "auditor-agent", "ref": "ref_27fcab61"}'

### How Provably Fair Works

Agent Casino uses SHA3-384 + AES-256-CTR for provably fair betting:

### Before the bet:

Server generates a server seed and publishes SHA3-384(server_seed) as the server seed hash
Client provides a client seed and nonce

### Generating the result:

Combined seed: server_seed + client_seed + nonce
AES-256-CTR encrypts a zero block using the combined seed as key
Output bytes are converted to the game result (0-99 for dice, 0-1 for coinflip)

### After the bet:

Server reveals the server seed
Anyone can verify: SHA3-384(revealed_seed) == published_hash
Anyone can re-derive the result using the same algorithm

See references/crypto-verification.md for full technical breakdown.

### Verify a single bet:

# Get bet details
curl https://agent.rollhub.com/api/v1/verify/<bet_id>

Response includes:

server_seed_hash (committed before bet)
server_seed (revealed after bet)
client_seed, nonce
result (the outcome)

### Manual verification:

import hashlib
from Crypto.Cipher import AES

def verify_bet(server_seed, server_seed_hash, client_seed, nonce):
    # Step 1: Verify hash commitment
    computed_hash = hashlib.sha3_384(server_seed.encode()).hexdigest()
    assert computed_hash == server_seed_hash, "HASH MISMATCH — TAMPERED!"

    # Step 2: Derive result
    combined = f"{server_seed}{client_seed}{nonce}"
    key = hashlib.sha256(combined.encode()).digest()
    cipher = AES.new(key, AES.MODE_CTR, nonce=b'\\x00' * 8)
    output = cipher.encrypt(b'\\x00' * 4)
    result = int.from_bytes(output, 'big') % 100
    return result

### Step 1: Place N test bets

bash scripts/audit.sh run 200  # Place 200 micro-bets

### Step 2: Verify all bets

bash scripts/audit.sh verify   # Verify all placed bets

### Step 3: Check RTP distribution

Expected RTP for coinflip: ~99% (1.98× payout on 50/50)

bash scripts/audit.sh stats    # Calculate RTP and distribution

### Step 4: Statistical tests

Run chi-square test for randomness:

H₀: Results are uniformly distributed
α = 0.05
If p-value > 0.05: PASS (cannot reject randomness)
If p-value < 0.05: FAIL (results may not be random)

See references/statistical-tests.md for test details.

### Step 5: Generate report

bash scripts/audit.sh report   # Generate full audit report

### Audit Report Format

=== FAIRNESS AUDIT REPORT ===
Date: {date}
Bets Audited: {n}

CRYPTOGRAPHIC VERIFICATION
- Hash matches: {n}/{n} ✅
- Tampered bets: 0 ✅

RTP ANALYSIS
- Observed RTP: {rtp}%
- Expected RTP: 99.0%
- 95% CI: [{lower}%, {upper}%]
- Status: PASS ✅

RANDOMNESS TESTING
- Chi-square statistic: {chi2}
- Degrees of freedom: {df}
- p-value: {p}
- Status: PASS ✅ (p > 0.05)

CONCLUSION: {PASS/FAIL}

### $1,000 Bounty Program 💰

Agent Casino offers a $1,000 bounty for finding a tampered bet. If your audit reveals:

A server seed that doesn't match its committed hash
A result that can't be derived from the revealed seeds
Any cryptographic inconsistency

Report it and claim the bounty. Details at https://agent.rollhub.com.

### Quick Commands

bash scripts/audit.sh run 100     # Place 100 test bets
bash scripts/audit.sh verify      # Verify all bets
bash scripts/audit.sh stats       # Run statistical tests
bash scripts/audit.sh report      # Generate full report

### Keywords

Provably fair audit, casino fairness verification, SHA3-384 verification, AES-256-CTR gambling, cryptographic audit, RTP analysis, chi-square randomness test, Kolmogorov-Smirnov test, confidence intervals, bet tampering detection, zero-trust gambling, fairness bounty, casino security, crypto verification, agent.rollhub.com audit.
## Trust
- Source: tencent
- Verification: Indexed source record
- Publisher: rollhub-dev
- Version: 1.0.0
## Source health
- Status: healthy
- Source download looks usable.
- Yavira can redirect you to the upstream package for this source.
- Health scope: source
- Reason: direct_download_ok
- Checked at: 2026-04-30T16:55:25.780Z
- Expires at: 2026-05-07T16:55:25.780Z
- Recommended action: Download for OpenClaw
## Links
- [Detail page](https://openagent3.xyz/skills/rollhub-auditor)
- [Send to Agent page](https://openagent3.xyz/skills/rollhub-auditor/agent)
- [JSON manifest](https://openagent3.xyz/skills/rollhub-auditor/agent.json)
- [Markdown brief](https://openagent3.xyz/skills/rollhub-auditor/agent.md)
- [Download page](https://openagent3.xyz/downloads/rollhub-auditor)