federation_query

Query federated memory from a remote peer (PII-gated)

SERVERHamza Agent Hub 252 SOURCEhamzachallenge3-dev/hamza-agent-hub-252

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/hamza-agent-hub-252/federation-query.md

WHAT IT DOES

What federation_query does on Hamza Agent Hub 252

AI agents call federation_query to retrieve information from Hamza Agent Hub 252 without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why federation_query is rated Low

This tool retrieves data from federated memory across peer nodes. While it performs a read operation (query), the 'medium' severity reflects potential risks from querying distributed systems: (1) accessing sensitive data across trust boundaries, (2) PII exposure if gates are misconfigured, and (3) information leakage from coordinated agent swarms. The PII-gating mechanism reduces risk but does not eliminate it.

From the tool's definition Tool name 'federation_query' and description 'Query federated memory from a remote peer (PII-gated)' indicates data retrieval from a distributed system.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs federation_query safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Hamza Agent Hub 252, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For federation_query, this is the rule to start with:

federation_query Allowed

federation_query is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "federation_query": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Hamza Agent Hub 252, apply this rule, and every federation_query call is checked against it from then on.

FAQ

Questions about federation_query

What does the federation_query tool do? +

Query federated memory from a remote peer (PII-gated). It is categorised as a Read tool in the Hamza Agent Hub 252 MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on federation_query? +

Register the Hamza Agent Hub 252 MCP server in PolicyLayer and add a rule for federation_query: 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 Hamza Agent Hub 252. Nothing to install.

What risk level is federation_query? +

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

Can I rate-limit federation_query? +

Yes. Add a rate_limit block to the federation_query 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 federation_query completely? +

Set action: deny in the PolicyLayer policy for federation_query. 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 federation_query? +

federation_query is provided by the Hamza Agent Hub 252 MCP server (hamzachallenge3-dev/hamza-agent-hub-252). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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