lookup

Fast knowledge lookup. Returns specs for items, triggers, effects, systems, or recipes directly. Supports batch mode: pass 'terms' array (max 20) to look up multiple items in one call instead of making separate requests.

Server Portals portals-mcp
Category Read
Risk class Low
Parameters 40 required

What lookup does on Portals

AI agents call lookup to retrieve information from Portals without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

ParameterTypeRequiredDescription
term string Search term: item name, prefabName, $type, or keyword. E.g., 'cube', 'OnClickEvent', 'keypad'.
type string Filter by entry type: item, trigger, effect, system, recipe, pattern.
terms array Batch lookup: array of search terms (max 20). Returns results for each term in one call. Use instead of multiple single lookups.
category string Filter by category: building, models, gameplay, media, lighting, display, interactive, effects, triggers, systems, interactions.

Parameters from the server's own tool schema.

Why lookup needs a policy

This tool retrieves and returns structured information (specs, recipes, system details) without creating, modifying, deleting, or executing any operations. It is a pure read operation that queries a knowledge base. No side effects or state changes are implied by the description. The batch mode capability does not change the fundamental nature of the operation—it remains a Read category tool.

From the tool's definition Tool description states 'Fast knowledge lookup. Returns specs for items, triggers, effects, systems, or recipes directly.' The verb 'Returns' and 'lookup' indicate data retrieval with no modification or side effects.

Questions about lookup

What does the lookup tool do? +

Fast knowledge lookup. Returns specs for items, triggers, effects, systems, or recipes directly. Supports batch mode: pass 'terms' array (max 20) to look up multiple items in one call instead of making separate requests. It is categorised as a Read tool in the Portals MCP Server, which means it retrieves data without modifying state.

What parameters does lookup accept? +

lookup accepts 4 parameters: term, type, terms, category. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on lookup? +

Register the Portals MCP server in PolicyLayer and add a rule for lookup: 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 Portals. Nothing to install.

What risk level is lookup? +

lookup is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit lookup? +

Yes. Add a rate_limit block to the lookup 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.

How do I block lookup completely? +

Set action: deny in the PolicyLayer policy for lookup. 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.

What MCP server provides lookup? +

lookup is provided by the Portals MCP server (portals-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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