Update blueprint configuration. Args: blueprint_id: ID of the blueprint config: New configuration to apply Returns: Updated blueprint configuration
AI agents use update_blueprint_config to create or update resources in Ludus FastMCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ludus FastMCP environment.
This tool modifies blueprint configurations, which are infrastructure-as-code templates for cyber range environments. While reversible, misconfiguration could disrupt security testing environments, impact multiple deployed ranges (given the sibling tool 'apply_blueprint_to_range'), and affect security research operations.
From the tool's definition Tool name 'update_blueprint_config' and description 'Update blueprint configuration' indicate modification of existing data. Args include 'blueprint_id' and 'config' (new configuration to apply), with return of 'Updated blueprint configuration'.
Documented attack patterns abuse exactly the kind of access update_blueprint_config gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Ludus FastMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for update_blueprint_config:
{
"version": "1",
"default": "deny",
"tools": {
"update_blueprint_config": {
"limits": [
{
"counter": "update_blueprint_config_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}update_blueprint_config 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.
Free to start. No card required.
Update blueprint configuration. Args: blueprint_id: ID of the blueprint config: New configuration to apply Returns: Updated blueprint configuration. It is categorised as a Write tool in the Ludus FastMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Ludus Fast MCP server in PolicyLayer and add a rule for update_blueprint_config: 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 Ludus FastMCP. Nothing to install.
update_blueprint_config 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 update_blueprint_config 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 update_blueprint_config. 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.
update_blueprint_config is provided by the Ludus Fast MCP server (tjnull/ludus-fastmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 201 Ludus FastMCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
201 Ludus FastMCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.