register_operator
Register a new operator account. Returns API key and recovery code. SAVE THESE - they cannot be retrieved later! Tip: pass an email to claim the 100 free-sats install promo.
This record as markdown: /tools/io-github-lightningfaucet-lightning-wallet-mcp/register-operator.md
What register_operator does on Lightning Wallet
AI agents use register_operator to create or update resources in Lightning Wallet, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Lightning Wallet environment.
Why register_operator is rated Medium
This tool creates new operator accounts and generates sensitive credentials (API key, recovery code) that establish persistent state. While account registration itself is reversible (accounts can theoretically be deleted), the creation of cryptographic credentials and the establishment of financial/identity state in a Bitcoin Lightning wallet system makes this a Write operation with high severity.
From the tool's definition Tool description states 'Register a new operator account' and 'Returns API key and recovery code.' These are account creation operations that irreversibly create persistent credentials and state.
Attacks that exploit this kind of access
The rule that runs register_operator safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Lightning Wallet, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For register_operator, this is the rule to start with:
register_operator 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Lightning Wallet, apply this rule, and every register_operator call is checked against it from then on.
Questions about register_operator
Register a new operator account. Returns API key and recovery code. SAVE THESE - they cannot be retrieved later! Tip: pass an email to claim the 100 free-sats install promo. It is categorised as a Write tool in the Lightning Wallet MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Lightning Wallet MCP server in PolicyLayer and add a rule for register_operator: 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 Lightning Wallet. Nothing to install.
register_operator 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 register_operator 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 register_operator. 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.
register_operator is provided by the Lightning Wallet MCP server (lightning-wallet-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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