Look up a chess position in the Lichess masters database
AI agents call lookup_masters_position to retrieve information from Chess Analysis Assistant without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only lookup operation against a public chess database. It retrieves historical game data or position information but does not create, modify, delete, execute code, or have financial implications. The 'look up' verb and 'database' context confirm it is a passive data retrieval operation with no side effects. Severity is low because misuse would only result in accessing public chess data.
From the tool's definition Tool name 'lookup_masters_position' combined with description 'Look up a chess position in the Lichess masters database' indicates a query operation that retrieves existing data from a public database without modification.
Documented attack patterns abuse exactly the kind of access lookup_masters_position gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Chess Analysis Assistant, and nothing reaches the server without passing your rules. This is the rule we recommend for lookup_masters_position:
{
"version": "1",
"default": "deny",
"tools": {
"lookup_masters_position": {}
}
}lookup_masters_position is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Look up a chess position in the Lichess masters database. It is categorised as a Read tool in the Chess Analysis Assistant MCP Server, which means it retrieves data without modifying state.
Register the Chess Analysis Assistant MCP server in PolicyLayer and add a rule for lookup_masters_position: 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 Chess Analysis Assistant. Nothing to install.
lookup_masters_position 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_masters_position 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_masters_position. 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_masters_position is provided by the Chess Analysis Assistant MCP server (turlockmike/chess-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Chess Analysis Assistant, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
4 Chess Analysis Assistant tools catalogued and risk-classified — across an index of 43,000+ MCP servers.