Reverse-lookup the active or pending lease that has claimed a given FQDN. Returns the lease and the
AI agents call lease_by_custom_domain to retrieve information from Manifest MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns existing data about active or pending leases without modifying, deleting, or executing operations. It is a lookup/fetch operation typical of Read category. The low severity reflects that it only retrieves information that would typically be public or authorized query data in a blockchain/provider management context.
From the tool's definition Tool performs a 'reverse-lookup' to retrieve lease information associated with a given FQDN. The description indicates it 'returns the lease', which is a retrieval operation with no side effects.
Attacks that exploit this kind of access
Reverse-lookup the active or pending lease that has claimed a given FQDN. Returns the lease and the. It is categorised as a Read tool in the Manifest MCP MCP Server, which means it retrieves data without modifying state.
Register the Manifest MCP server in PolicyLayer and add a rule for lease_by_custom_domain: 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 Manifest MCP. Nothing to install.
lease_by_custom_domain is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the lease_by_custom_domain 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 lease_by_custom_domain. 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.
lease_by_custom_domain is provided by the Manifest MCP server (manifest-network/manifest-mcp-mono). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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