env_read

Read a .env file (secrets are masked).

SERVERYaver SOURCEyaver-cli

Low RISK CLASS

Category Read

Parameters 10 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-kivanccakmak-yaver/env-read.md

WHAT IT DOES

What env_read does on Yaver

AI agents call env_read to retrieve information from Yaver 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
`path`	string	—	Path to .env file (default: .env)

Parameters from the server's own tool schema.

RISK

Why env_read is rated Low

This tool retrieves configuration data from environment files without modification, deletion, or execution. The masking of secrets further indicates it is a safe read operation designed for inspection purposes only. No side effects, no data modification, no code execution.

From the tool's definition Tool name is 'env_read' and description states 'Read a .env file (secrets are masked)'. The verb 'read' and explicit masking of secrets indicate a retrieval-only operation with no side effects.

Risk signalsAccepts file system path (path)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs env_read safely

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

env_read Allowed

env_read 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": {
    "env_read": {}
  }
}

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

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

FAQ

Questions about env_read

What does the env_read tool do? +

Read a .env file (secrets are masked). It is categorised as a Read tool in the Yaver MCP Server, which means it retrieves data without modifying state.

What parameters does env_read accept? +

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

How do I enforce a policy on env_read? +

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

What risk level is env_read? +

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

Can I rate-limit env_read? +

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

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

env_read is provided by the Yaver MCP server (yaver-cli). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Yaver, and thousands of servers like it.

This server

All 645 Yaver tools →

Across the catalogue

claude_read_file on Claude Bridge → The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →