local_ydb_prepare_auth_config
Generate a hardened YDB config from the current static-node config. Use before local_ydb_write_dynamic_auth_config and local_ydb_apply_auth_hardening; without confirm=true this returns the planned write only.
This record as markdown: /tools/local-ydb/local-ydb-prepare-auth-config.md
What local_ydb_prepare_auth_config does on Local Ydb
AI agents use local_ydb_prepare_auth_config to create or update resources in Local Ydb, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Local Ydb environment.
Why local_ydb_prepare_auth_config is rated Medium
This tool creates or modifies authentication configuration for a YDB deployment. While it may have a 'dry-run' mode (returning planned writes without confirm=true), the core function is to generate hardened configs that alter security settings.
From the tool's definition Tool generates and prepares a YDB configuration ('Generate a hardened YDB config'), which is a data modification operation.
Attacks that exploit this kind of access
The rule that runs local_ydb_prepare_auth_config safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Local Ydb, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For local_ydb_prepare_auth_config, this is the rule to start with:
local_ydb_prepare_auth_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.
The button opens the PolicyLayer dashboard: create your workspace, connect Local Ydb, apply this rule, and every local_ydb_prepare_auth_config call is checked against it from then on.
Questions about local_ydb_prepare_auth_config
Generate a hardened YDB config from the current static-node config. Use before local_ydb_write_dynamic_auth_config and local_ydb_apply_auth_hardening; without confirm=true this returns the planned write only. It is categorised as a Write tool in the Local Ydb MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Local Ydb MCP server in PolicyLayer and add a rule for local_ydb_prepare_auth_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 Local Ydb. Nothing to install.
local_ydb_prepare_auth_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 local_ydb_prepare_auth_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 local_ydb_prepare_auth_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.
local_ydb_prepare_auth_config is provided by the Local Ydb MCP server (@astandrik/local-ydb-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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