controls how wild the random combination can be. It defaults
Part of the Random Design server.
Free to start. No card required.
AI agents use compatibility to create or modify resources in Random Design. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call compatibility repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Random Design.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"compatibility": {
"limits": [
{
"counter": "compatibility_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Random Design policy for all 4 tools.
These attack patterns abuse exactly the kind of access compatibility gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
controls how wild the random combination can be. It defaults. It is categorised as a Write tool in the Random Design MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Random Design MCP server in PolicyLayer and add a rule for compatibility: 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 Random Design. Nothing to install.
compatibility is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the compatibility 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 compatibility. 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.
compatibility is provided by the Random Design MCP server (random-design-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 4 Random Design tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.