AI agents use beacon_register to create or update resources in RustChain + BoTTube MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your RustChain + BoTTube MCP Server environment.
The 'register' action creates or enrolls an entity (user, agent, or contract) in the blockchain system, modifying state reversibly. This is a Write operation. Severity is medium because registration on a blockchain involves financial account setup (RTC token wallets mentioned in server description), creating moderate blast radius if an attacker registers malicious entities or agents.
From the tool's definition Tool name 'beacon_register' with 'register' verb typically indicating account or entity creation/enrollment. Empty description limits certainty.
Documented attack patterns abuse exactly the kind of access beacon_register gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and RustChain + BoTTube MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for beacon_register:
{
"version": "1",
"default": "deny",
"tools": {
"beacon_register": {
"limits": [
{
"counter": "beacon_register_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}beacon_register 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.
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beacon_register. It is categorised as a Write tool in the RustChain + BoTTube MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the RustChain + BoTTube MCP Server MCP server in PolicyLayer and add a rule for beacon_register: 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 RustChain + BoTTube MCP Server. Nothing to install.
beacon_register 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 beacon_register 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 beacon_register. 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.
beacon_register is provided by the RustChain + BoTTube MCP Server MCP server (scottcjn/rustchain-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 39 RustChain + BoTTube MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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39 RustChain + BoTTube MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.