Generate TypeScript code for bridging ETH or ERC20 tokens between L1, L2, and L3 (Orbit chains). Supports deposits, withdrawals, and L1->L3 bridging.
AI agents use generate_bridge_code to create or update resources in ARBuilder — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your ARBuilder environment.
The tool creates code that would execute financial transactions (token transfers between blockchain layers), but it generates the code rather than directly executing transfers. This makes it Write (code generation/creation) rather than Execute (direct transaction execution) or Financial (moving money directly). However, the generated code's purpose is inherently financial.
From the tool's definition Tool generates TypeScript code for bridging operations involving token deposits and withdrawals across multiple blockchain layers (L1, L2, L3).
Documented attack patterns abuse exactly the kind of access generate_bridge_code gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and ARBuilder, and nothing reaches the server without passing your rules. This is the rule we recommend for generate_bridge_code:
{
"version": "1",
"default": "deny",
"tools": {
"generate_bridge_code": {
"limits": [
{
"counter": "generate_bridge_code_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}generate_bridge_code stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Generate TypeScript code for bridging ETH or ERC20 tokens between L1, L2, and L3 (Orbit chains). Supports deposits, withdrawals, and L1->L3 bridging. It is categorised as a Write tool in the ARBuilder MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the ARBuilder MCP server in PolicyLayer and add a rule for generate_bridge_code: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches ARBuilder. Nothing to install.
generate_bridge_code is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the generate_bridge_code rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for generate_bridge_code. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
generate_bridge_code is provided by the ARBuilder MCP server (quantum3-labs/arbuilder). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from ARBuilder, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
18 ARBuilder tools catalogued and risk-classified — across an index of 43,000+ MCP servers.