// SCAN REPORT

ARBuilder

18 tools. 13 can modify or destroy data without limits.

13 write tools that can modify data. Rate limits recommended.

Last updated: 11 Jun 2026

13 can modify or destroy data

5 read-only

18 tools total

Community server · catalogue entry verified 11/06/2026

How to control ARBuilder ↓

TOOL MAP

What ARBuilder exposes to your agents

Read (5) Write / Execute (13) Destructive / Financial (0)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

High Risk

The most dangerous ARBuilder tools

Execute · High orchestrate_orbit This tool generates code and scripts designed to be executed for blockchain deployments. Execute · High generate_orbit_deployment This tool generates and likely triggers blockchain deployment operations (createRollup, createTokenBridge) for Orbit chains. Write · Medium generate_backend This tool generates code artifacts (backend service code, configuration files, API endpoints). Write · High generate_bridge_code The tool creates code that would execute financial transactions (token transfers between blockchain layers), but it generates the code rather than directly executing transfers.

13 of ARBuilder's 18 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control ARBuilder

PolicyLayer is an MCP gateway — it sits between your AI agents and ARBuilder, and nothing reaches the server without passing your rules. These are the rules we recommend:

Rate limit write operations

{
  "generate_backend": {
    "limits": [
      {
        "counter": "generate_backend_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations

{
  "ask_bridging": {
    "limits": [
      {
        "counter": "ask_bridging_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

Create a free account and register ARBuilder — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON ARBUILDER →

Free to start. No card required.

FULL CATALOGUE

All 18 ARBuilder tools

EXECUTE 2 tools

Execute orchestrate_orbit Scaffold a complete Orbit chain deployment project with all scripts, configuration, and documentation. Generat Execute generate_orbit_deployment Generate deployment code for Orbit chains. Supports rollup deployment (createRollup), token bridge deployment

WRITE 11 tools

Write generate_backend Generate a Web3 backend using NestJS or Express with viem integration for Arbitrum. Includes contract interact Write generate_bridge_code Generate TypeScript code for bridging ETH or ERC20 tokens between L1, L2, and L3 (Orbit chains). Supports depo Write generate_frontend Generate a Next.js frontend with wagmi, RainbowKit, and DaisyUI for Arbitrum dApps. Includes wallet connection Write generate_indexer Generate a The Graph subgraph for indexing Arbitrum smart contract events. Supports ERC20, ERC721, DeFi, and c Write generate_messaging_code Generate TypeScript code for Arbitrum cross-chain messaging. Supports L1->L2 messaging via retryable tickets, Write generate_oracle Generate Chainlink oracle integration code for Arbitrum. Supports Price Feeds, VRF (randomness), Automation (k Write generate_orbit_config Generate configuration code for Orbit chain deployment. Supports chain config, AnyTrust DAC setup, and custom Write generate_stylus_code Generate Stylus (Rust) smart contract code based on a description. Produces production-ready code using stylus Write generate_tests Generate comprehensive tests for Stylus contract code. Supports Rust native tests and Foundry Solidity tests. Write generate_validator_setup Generate code for managing Orbit chain validators, batch posters, and AnyTrust DAC keysets. Supports listing, Write orchestrate_dapp Scaffold a template-based dApp monorepo with starter components: Stylus contract, backend, frontend, indexer,

READ 5 tools

Read ask_bridging Answer questions about Arbitrum bridging and cross-chain messaging using RAG. Topics: ETH/ERC20 bridging, L1-> Read ask_orbit Answer questions about Arbitrum Orbit chain deployment, configuration, and management. Covers chain config, de Read ask_stylus Ask questions about Stylus development, debugging, optimization, or security. Gets context-aware answers with Read get_stylus_context Search for relevant Stylus documentation, code examples, and patterns. Use this to find information about Styl Read get_workflow Get step-by-step workflow instructions for building, deploying, or testing Stylus contracts.

EXPLORE

Related servers

Other MCP servers with similar tools — same risk classification, starter policies for each.

FAQ

Questions about ARBuilder

How do I prevent bulk modifications through ARBuilder? +

The ARBuilder server has 11 write tools including generate_backend, generate_bridge_code, generate_frontend. Set a rate limit in your policy -- for example, 10 calls per hour prevents an agent from making more than 10 modifications per hour. PolicyLayer enforces this at the gateway, before calls reach ARBuilder.

How many tools does the ARBuilder MCP server expose? +

18 tools across 3 categories: Execute, Read, Write. 5 are read-only. 13 can modify, create, or delete data.

How do I enforce a policy on ARBuilder? +

Register the ARBuilder MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every ARBuilder tool call.

Deterministic rules across all 18 ARBuilder tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON ARBUILDER →

Free to start. No card required.

18 ARBuilder tools catalogued and risk-classified — across an index of 43,000+ MCP servers.