Convert a solar date (Gregorian calendar) to lunar date (Vietnamese calendar)
Part of the Vietnamese Calendar server.
Free to start. No card required.
AI agents use convert_date_solar2lunar to create or modify resources in Vietnamese Calendar. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call convert_date_solar2lunar repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Vietnamese Calendar.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"convert_date_solar2lunar": {
"limits": [
{
"counter": "convert_date_solar2lunar_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Vietnamese Calendar policy for all 5 tools.
These attack patterns abuse exactly the kind of access convert_date_solar2lunar gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Convert a solar date (Gregorian calendar) to lunar date (Vietnamese calendar). It is categorised as a Write tool in the Vietnamese Calendar MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Vietnamese Calendar MCP server in PolicyLayer and add a rule for convert_date_solar2lunar: 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 Vietnamese Calendar. Nothing to install.
convert_date_solar2lunar 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 convert_date_solar2lunar 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 convert_date_solar2lunar. 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.
convert_date_solar2lunar is provided by the Vietnamese Calendar MCP server (https://am-lich.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 5 Vietnamese Calendar 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.