Simple hello world tool for Earth616 vocabulary service
AI agents call hello_vocab to retrieve information from Earth616 Vocabulary Service without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a simple diagnostic or greeting tool that serves as a connectivity/health check for the vocabulary service. It performs no meaningful operation on data, executes no external code, and has no side effects. The minimal nature of a 'hello world' tool makes it a Read category resource with negligible risk profile.
From the tool's definition Tool name 'hello_vocab' and description 'Simple hello world tool' indicate a basic greeting/test function with no data retrieval, modification, execution of code, or destructive operations.
Attacks that exploit this kind of access
Simple hello world tool for Earth616 vocabulary service. It is categorised as a Read tool in the Earth616 Vocabulary Service MCP Server, which means it retrieves data without modifying state.
Register the Earth616 Vocabulary Service MCP server in PolicyLayer and add a rule for hello_vocab: 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 Earth616 Vocabulary Service. Nothing to install.
hello_vocab 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 hello_vocab 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 hello_vocab. 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.
hello_vocab is provided by the Earth616 Vocabulary Service MCP server (la3d/mcp_vocabulary_service). 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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