List the wormholes: portals from this galaxy to other places on the agentic web (other worlds, markets, registries). Portal Protocol v0 — any world exposing GET /portals joins the ring.
AI agents call list_portals to retrieve information from Agent Planets 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 information about available portals without modifying any state, creating new resources, executing code, deleting data, or moving money. It is purely informational and read-only in nature.
From the tool's definition The tool explicitly "List[s] the wormholes: portals from this galaxy to other places," which is a retrieval operation retrieving a list of available portals/connections.
Attacks that exploit this kind of access
List the wormholes: portals from this galaxy to other places on the agentic web (other worlds, markets, registries). Portal Protocol v0 — any world exposing GET /portals joins the ring. It is categorised as a Read tool in the Agent Planets MCP Server, which means it retrieves data without modifying state.
Register the Agent Planets MCP server in PolicyLayer and add a rule for list_portals: 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 Agent Planets. Nothing to install.
list_portals 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 list_portals 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 list_portals. 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.
list_portals is provided by the Agent Planets MCP server (https://planets.agentexchange.work/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
list_portals is one line of Agent Planets's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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