Loads all default prompts from the default_prompts_data directory into the active prompt directory, skipping any that already exist.
AI agents use load_default_prompts to create or update resources in Prompt Registry MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Prompt Registry MCP environment.
This tool creates new prompt files in the active directory by copying from a defaults source. It is a write operation (creating files), not destructive since it skips existing ones. Misuse could flood the prompt directory with unwanted default prompts, but effects are reversible via delete_prompt.
From the tool's definition Loads all default prompts from the default_prompts_data directory into the active prompt directory, skipping any that already exist.
Documented attack patterns abuse exactly the kind of access load_default_prompts gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Prompt Registry MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for load_default_prompts:
{
"version": "1",
"default": "deny",
"tools": {
"load_default_prompts": {
"limits": [
{
"counter": "load_default_prompts_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}load_default_prompts 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.
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Loads all default prompts from the default_prompts_data directory into the active prompt directory, skipping any that already exist. It is categorised as a Write tool in the Prompt Registry MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Prompt Registry MCP server in PolicyLayer and add a rule for load_default_prompts: 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 Prompt Registry MCP. Nothing to install.
load_default_prompts 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 load_default_prompts 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 load_default_prompts. 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.
load_default_prompts is provided by the Prompt Registry MCP server (stevengonsalvez/promptregistry-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Prompt Registry MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
7 Prompt Registry MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.