Search for art events by artist name with fuzzy matching. Args: artist_name: The name of the artist to search for (can contain typos) Returns: JSON string containing matching events with artist and venue information
Part of the Art Events server.
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AI agents call search_events_by_artist to retrieve information from Art Events without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though search_events_by_artist only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"search_events_by_artist": {}
}
}See the full Art Events policy for all 3 tools.
These attack patterns abuse exactly the kind of access search_events_by_artist gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Search for art events by artist name with fuzzy matching. Args: artist_name: The name of the artist to search for (can contain typos) Returns: JSON string containing matching events with artist and venue information. It is categorised as a Read tool in the Art Events MCP Server, which means it retrieves data without modifying state.
Register the Art Events MCP server in PolicyLayer and add a rule for search_events_by_artist: 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 Art Events. Nothing to install.
search_events_by_artist 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 search_events_by_artist 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 search_events_by_artist. 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.
search_events_by_artist is provided by the Art Events MCP server (onurgu/art-events). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 3 Art Events tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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