Create a free StressZero API key (500 calls/month).
AI agents use get_stresszero_api_key to create or update resources in StressZero MCP - Burnout Risk Scoring — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your StressZero MCP - Burnout Risk Scoring environment.
The tool creates a new API key, which is a Write operation (creating a credential resource). While it is described as free, it does register an account or credential on an external service, which has side effects beyond a simple read. It is not Financial (no money moves), not Destructive, and not Execute.
From the tool's definition "Create a free StressZero API key" — the word 'Create' indicates a new resource is being provisioned/registered
Attacks that exploit this kind of access
Create a free StressZero API key (500 calls/month). It is categorised as a Write tool in the StressZero MCP - Burnout Risk Scoring MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the StressZero MCP - Burnout Risk Scoring MCP server in PolicyLayer and add a rule for get_stresszero_api_key: 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 StressZero MCP - Burnout Risk Scoring. Nothing to install.
get_stresszero_api_key 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 get_stresszero_api_key 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 get_stresszero_api_key. 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.
get_stresszero_api_key is provided by the StressZero MCP - Burnout Risk Scoring MCP server (stresszero-mcp). 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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