Browse Taiwan NHI 重大傷病 (major illness) categories — official categories that grant copayment exemption and a more lenient claim-review process. Returns category name, ICD-10 code coverage, application requirement, and validity period. Use when an agent needs to enumerate or filter major-illness c...
AI agents call lookup_major_illness to retrieve information from Opdstar Nhi without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool is a read-only lookup function that retrieves reference data about Taiwan's NHI major illness categories from a public health insurance database. It performs data retrieval with no creation, modification, deletion, or external execution. The output is informational (category names, ICD-10 mappings, eligibility criteria) used to inform decision-making, not to execute actions or alter records.
From the tool's definition Tool description indicates it 'Browse' and 'Returns category name, ICD-10 code coverage, application requirement, and validity period' — operations that retrieve and query data without modification or side effects.
Attacks that exploit this kind of access
Browse Taiwan NHI 重大傷病 (major illness) categories — official categories that grant copayment exemption and a more lenient claim-review process. Returns category name, ICD-10 code coverage, application requirement, and validity period. Use when an agent needs to enumerate or filter major-illness categories (e.g. It is categorised as a Read tool in the Opdstar Nhi MCP Server, which means it retrieves data without modifying state.
Register the Opdstar Nhi MCP server in PolicyLayer and add a rule for lookup_major_illness: 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 Opdstar Nhi. Nothing to install.
lookup_major_illness 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 lookup_major_illness 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 lookup_major_illness. 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.
lookup_major_illness is provided by the Opdstar Nhi MCP server (tatsuju/opdstar-nhi-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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