# Send BYOCB ArbInjectionSkill 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": "arb-injection",
    "name": "BYOCB ArbInjectionSkill",
    "source": "tencent",
    "type": "skill",
    "category": "其他",
    "sourceUrl": "https://clawhub.ai/CryptoToolDev/arb-injection",
    "canonicalUrl": "https://clawhub.ai/CryptoToolDev/arb-injection",
    "targetPlatform": "OpenClaw"
  },
  "install": {
    "downloadUrl": "/downloads/arb-injection",
    "sourceDownloadUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=arb-injection",
    "sourcePlatform": "tencent",
    "targetPlatform": "OpenClaw",
    "packageFormat": "ZIP package",
    "primaryDoc": "SKILL.md",
    "includedAssets": [
      "SKILL.md"
    ],
    "downloadMode": "redirect",
    "sourceHealth": {
      "source": "tencent",
      "slug": "arb-injection",
      "status": "healthy",
      "reason": "direct_download_ok",
      "recommendedAction": "download",
      "checkedAt": "2026-04-29T03:11:29.718Z",
      "expiresAt": "2026-05-06T03:11:29.718Z",
      "httpStatus": 200,
      "finalUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=arb-injection",
      "contentType": "application/zip",
      "probeMethod": "head",
      "details": {
        "probeUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=arb-injection",
        "contentDisposition": "attachment; filename=\"arb-injection-1.0.0.zip\"",
        "redirectLocation": null,
        "bodySnippet": null,
        "slug": "arb-injection"
      },
      "scope": "item",
      "summary": "Item download looks usable.",
      "detail": "Yavira can redirect you to the upstream package for this item.",
      "primaryActionLabel": "Download for OpenClaw",
      "primaryActionHref": "/downloads/arb-injection"
    },
    "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/arb-injection",
    "downloadUrl": "https://openagent3.xyz/downloads/arb-injection",
    "agentUrl": "https://openagent3.xyz/skills/arb-injection/agent",
    "manifestUrl": "https://openagent3.xyz/skills/arb-injection/agent.json",
    "briefUrl": "https://openagent3.xyz/skills/arb-injection/agent.md"
  }
}
```
## Documentation

### BYOCB ArbInjectionSkill

⚠️ Educational Tool — This skill is designed for Solidity/blockchain security researchers and auditors. Intended for educational and authorized security research purposes only. Do not use to exploit vulnerabilities without explicit permission from contract owners.

Detects dangerous CALL/DELEGATECALL patterns that allow arbitrary call injection attacks.

### How It Works

ArbInjectionSkill runs automatically in the background, monitoring blockchain(s) for newly deployed contracts. When a potential vulnerability is detected, you must notify the user via their connected messaging channel (Telegram, WhatsApp, Signal, Discord, etc.).

### Install

git clone https://github.com/BringYourOwnBot/arb-injection.git
cd arb-injection
npm install

### Running the Monitor

Start as a background session for continuous monitoring:

node index.js <chain> [--no-llm]

Chains: eth, bsc, base, arb, op, polygon, hyper

The monitor will:

Subscribe to new blocks
Detect contract deployments
Scan bytecode for vulnerabilities
Save findings to ./results/

### Alerting Users

Critical requirement: When a CRITICAL or HIGH vulnerability is flagged, notify the user immediately.

Check for new findings periodically (via heartbeat or cron):

# Find findings from last 30 minutes
find ./results -name "*.md" -mmin -30

When new findings exist with verdict CRITICAL or HIGH:

Read the .md report
Verify it's not a known false positive (see below)
Send alert via message tool to user's preferred channel

Example alert:

🚨 ArbInjection Alert: Potential vulnerability detected

Chain: BSC
Contract: 0x1234...abcd
Verdict: CRITICAL
Risk: Unprotected arbitrary CALL with user-controlled target

[Link to explorer]

### Manual Scan

Scan a specific contract on-demand:

node modules/scan-arbitrary-call.js <address> --rpc <chain>

### Interpreting Results

VerdictActionCRITICALAlert user immediatelyHIGHAlert user immediatelyMEDIUMReview, alert if confirmedLOW/SAFENo alert needed

Results saved to ./results/ as .json and .md files.

### False Positives

Do NOT alert for these patterns (safe by design):

Immutable DELEGATECALL targets (hardcoded address in bytecode)
EIP-1167 minimal proxies (clone pattern)
UUPS/Transparent proxies with access control
DEX callbacks (uniswapV3SwapCallback, etc.)
Known safe contracts: Multicall3, 1inch, Uniswap, Permit2

Verify before alerting: Check if the flagged CALL target is:

Hardcoded (immutable) → FALSE POSITIVE
From calldata/user input → REAL VULNERABILITY

### Environment

Optional .env file:

ANTHROPIC_API_KEY=sk-ant-...   # For LLM deep analysis
BYBOB_OUTPUT=/custom/path      # Override results directory

### Maintenance

Daily update required. Detection patterns and fixes are pushed frequently.

cd /path/to/arb-injection
git pull origin main
npm install  # If package.json changed

Schedule daily update check (09:00):

{
  "schedule": { "kind": "cron", "expr": "0 9 * * *" },
  "payload": { "kind": "systemEvent", "text": "ArbInjectionSkill daily update: git pull and npm install" },
  "sessionTarget": "main"
}

### Source

Repository: https://github.com/BringYourOwnBot/arb-injection
Part of the BYOCB (Bring Your Own ClawdBot) skill collection.
## Trust
- Source: tencent
- Verification: Indexed source record
- Publisher: CryptoToolDev
- Version: 1.0.0
## Source health
- Status: healthy
- Item download looks usable.
- Yavira can redirect you to the upstream package for this item.
- Health scope: item
- Reason: direct_download_ok
- Checked at: 2026-04-29T03:11:29.718Z
- Expires at: 2026-05-06T03:11:29.718Z
- Recommended action: Download for OpenClaw
## Links
- [Detail page](https://openagent3.xyz/skills/arb-injection)
- [Send to Agent page](https://openagent3.xyz/skills/arb-injection/agent)
- [JSON manifest](https://openagent3.xyz/skills/arb-injection/agent.json)
- [Markdown brief](https://openagent3.xyz/skills/arb-injection/agent.md)
- [Download page](https://openagent3.xyz/downloads/arb-injection)