brews_listBrews

List Brews in the selected project (POST /v1/brews/list)

SERVERGenesis SOURCE@onesi/genesis-mcp

Low RISK CLASS

Category Read

Parameters 11 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/onesi-genesis-mcp/brews-listbrews.md

WHAT IT DOES

What brews_listBrews does on Genesis

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

Parameter	Type	Required	Description
`body`	object	Yes

Parameters from the server's own tool schema.

RISK

Why brews_listBrews is rated Low

Even though brews_listBrews only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Risk signalsAccepts raw HTML/template content (body) · High parameter count (11 properties)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs brews_listBrews safely

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

brews_listBrews Allowed

brews_listBrews 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": {
    "brews_listBrews": {}
  }
}

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

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

FAQ

Questions about brews_listBrews

What does the brews_listBrews tool do? +

List Brews in the selected project (POST /v1/brews/list). It is categorised as a Read tool in the Genesis MCP Server, which means it retrieves data without modifying state.

What parameters does brews_listBrews accept? +

brews_listBrews accepts 1 parameter: body. Required: body. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on brews_listBrews? +

Register the Genesis MCP server in PolicyLayer and add a rule for brews_listBrews: 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 Genesis. Nothing to install.

What risk level is brews_listBrews? +

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

Can I rate-limit brews_listBrews? +

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

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

brews_listBrews is provided by the Genesis MCP server (@onesi/genesis-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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