Get allowed qualifiers (subheadings) for a MeSH descriptor. Use this tool to: - Find which qualifiers can be combined with a descriptor - Build precise MeSH search queries - Understand aspects that can be specified Qualifiers refine descriptors (e.g., "Diabetes Mellitus/drug therapy").
Part of the Medical Terminologies MCP server.
Free to start. No card required.
AI agents invoke mesh_qualifiers to trigger processes or run actions in Medical Terminologies MCP. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
mesh_qualifiers can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. PolicyLayer enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
{
"version": "1",
"default": "deny",
"tools": {
"mesh_qualifiers": {
"limits": [
{
"counter": "mesh_qualifiers_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}See the full Medical Terminologies MCP policy for all 31 tools.
These attack patterns abuse exactly the kind of access mesh_qualifiers gives an agent. Each links to the full case and the policy that stops it:
Other execute tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Get allowed qualifiers (subheadings) for a MeSH descriptor. Use this tool to: - Find which qualifiers can be combined with a descriptor - Build precise MeSH search queries - Understand aspects that can be specified Qualifiers refine descriptors (e.g., "Diabetes Mellitus/drug therapy").. It is categorised as a Execute tool in the Medical Terminologies MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Medical Terminologies MCP server in PolicyLayer and add a rule for mesh_qualifiers: 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 Medical Terminologies MCP. Nothing to install.
mesh_qualifiers is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the mesh_qualifiers 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 mesh_qualifiers. 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.
mesh_qualifiers is provided by the Medical Terminologies MCP server (sidneybissoli/medical-terminologies). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 31 Medical Terminologies MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.