get_block_schema

Full schema for one block type: props with types/defaults/enum values, notes, supported domains, style targets.

SERVERHa Nexus Agent SOURCEfistacho/ha-nexus-agent

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/fistacho-ha-nexus-agent/get-block-schema.md

WHAT IT DOES

What get_block_schema does on Ha Nexus Agent

AI agents call get_block_schema to retrieve information from Ha Nexus Agent without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why get_block_schema is rated Low

This tool retrieves and returns structured metadata about a block type's schema. It queries configuration/definition data without modifying state, creating resources, executing operations, or causing side effects. This is a straightforward read operation suitable for introspection and validation purposes in a Home Assistant automation context.

From the tool's definition Tool name 'get_block_schema' and description 'Full schema for one block type: props with types/defaults/enum values, notes, supported domains, style targets' indicate retrieval of schema metadata.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_block_schema safely

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

get_block_schema Allowed

get_block_schema is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_block_schema": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ha Nexus Agent, apply this rule, and every get_block_schema call is checked against it from then on.

FAQ

Questions about get_block_schema

What does the get_block_schema tool do? +

Full schema for one block type: props with types/defaults/enum values, notes, supported domains, style targets. It is categorised as a Read tool in the Ha Nexus Agent MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_block_schema? +

Register the Ha Nexus Agent MCP server in PolicyLayer and add a rule for get_block_schema: 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 Ha Nexus Agent. Nothing to install.

What risk level is get_block_schema? +

get_block_schema is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_block_schema? +

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

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

get_block_schema is provided by the Ha Nexus Agent MCP server (fistacho/ha-nexus-agent). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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