Get 1Password Environment variables with values redacted. Supports simple client-side filtering by variable name. ${SCRIPT_RUNNER_SECRET_HINT}
AI agents call environment_get_variables to retrieve information from Mcp 1password without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves environment variables from 1Password with security protections (values redacted by default). It performs a query/fetch operation with no data modification, deletion, or execution of external operations. The redaction mechanism further confirms it is designed for safe read-only access. Severity is low because retrieving environment variable metadata poses minimal risk even if misused by an agent.
From the tool's definition Tool name contains 'get' and description states 'Get 1Password Environment variables with values redacted'. The redaction of sensitive values confirms this is a retrieval operation without side effects.
Attacks that exploit this kind of access
Get 1Password Environment variables with values redacted. Supports simple client-side filtering by variable name. ${SCRIPT_RUNNER_SECRET_HINT}. It is categorised as a Read tool in the Mcp 1password MCP Server, which means it retrieves data without modifying state.
Register the Mcp 1password MCP server in PolicyLayer and add a rule for environment_get_variables: 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 Mcp 1password. Nothing to install.
environment_get_variables is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the environment_get_variables 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 environment_get_variables. 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.
environment_get_variables is provided by the Mcp 1password MCP server (kefapps/onepassword-mcp-codex). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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