create_agent

A write tool on the A2a Cloud MCP server.

SERVERA2a Cloud SOURCErobGetsTheJobDone/a2a-cloud

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade C, identity unverified Pull the record →

This record as markdown: /tools/a2a-cloud/create-agent.md

WHAT IT DOES

What create_agent does on A2a Cloud

AI agents use create_agent to create or update resources in A2a Cloud, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your A2a Cloud environment.

RISK

Why create_agent is rated Medium

Creating agents in a long-term memory system is a reversible modification operation (Write category). Severity is medium because misuse could spawn unauthorized agents, pollute the memory store, or interfere with legitimate CLI workflows, but the impact is limited to agent metadata rather than financial or destructive system changes.

From the tool's definition Tool name 'create_agent' indicates creating new agent records in a long-term memory system. The server description mentions 'cross-CLI, cross-project, cross-session' persistence, and sibling tools like 'delete_agent', 'list_agents', and 'wiki_write_concept'…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_agent safely

PolicyLayer is an MCP gateway: it sits between your AI agents and A2a Cloud, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For create_agent, this is the rule to start with:

create_agent Rate-limited

create_agent 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_agent": {
      "limits": [
        {
          "counter": "create_agent_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect A2a Cloud, apply this rule, and every create_agent call is checked against it from then on.

FAQ

Questions about create_agent

What does the create_agent tool do? +

create_agent is a write tool on the A2a Cloud MCP server. It is categorised as a Write tool in the A2a Cloud MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_agent? +

Register the A2a Cloud MCP server in PolicyLayer and add a rule for create_agent: 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 A2a Cloud. Nothing to install.

What risk level is create_agent? +

create_agent is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_agent? +

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

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

create_agent is provided by the A2a Cloud MCP server (robGetsTheJobDone/a2a-cloud). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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