Search the spritetypes.txt file for sprite image definitions used in the interface.
AI agents call search_spritetypes to retrieve information from OSRS MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves sprite image definition data from a configuration file without side effects. It matches the Read category pattern of querying/searching data. The severity is low because accessing sprite definitions poses minimal security risk—it cannot modify game state, execute code, delete data, or cause financial impact.
From the tool's definition Tool searches the spritetypes.txt file for sprite image definitions. No modification, deletion, or execution occurs. The action is a pure query/search operation on static game data files.
Documented attack patterns abuse exactly the kind of access search_spritetypes gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and OSRS MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for search_spritetypes:
{
"version": "1",
"default": "deny",
"tools": {
"search_spritetypes": {}
}
}search_spritetypes is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search the spritetypes.txt file for sprite image definitions used in the interface. It is categorised as a Read tool in the OSRS MCP Server MCP Server, which means it retrieves data without modifying state.
Register the OSRS MCP Server MCP server in PolicyLayer and add a rule for search_spritetypes: 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 OSRS MCP Server. Nothing to install.
search_spritetypes 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_spritetypes 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_spritetypes. 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_spritetypes is provided by the OSRS MCP Server MCP server (jayarrowz/mcp-osrs). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from OSRS MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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23 OSRS MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.