Get a list of all indexes and their sourcetypes. This endpoint performs a search to gather: - All available indexes - All sourcetypes within each index - Event counts for each sourcetype - Time range information Returns: Dict[str, Any]: Dictionary containing: - indexes: List of all accessible ind...
AI agents call get_indexes_and_sourcetypes to retrieve information from Splunk without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries data from Splunk without any side effects. It gathers metadata about indexes and sourcetypes through a search operation and returns information only. No creation, modification, deletion, code execution, or financial operations are involved. The blast radius of misuse is minimal as it only exposes existing metadata that an authenticated user would typically have access to in Splunk.
From the tool's definition Tool description states it 'Get a list of all indexes and their sourcetypes' and 'performs a search to gather' information about indexes, sourcetypes, event counts, and time ranges.
Documented attack patterns abuse exactly the kind of access get_indexes_and_sourcetypes gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Splunk, and nothing reaches the server without passing your rules. This is the rule we recommend for get_indexes_and_sourcetypes:
{
"version": "1",
"default": "deny",
"tools": {
"get_indexes_and_sourcetypes": {}
}
}get_indexes_and_sourcetypes is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get a list of all indexes and their sourcetypes. This endpoint performs a search to gather: - All available indexes - All sourcetypes within each index - Event counts for each sourcetype - Time range information Returns: Dict[str, Any]: Dictionary containing: - indexes: List of all accessible indexes - sourcetypes: Dictionary mapping indexes to their sourcetypes - metadata: Additional information about the search. It is categorised as a Read tool in the Splunk MCP Server, which means it retrieves data without modifying state.
Register the Splunk MCP server in PolicyLayer and add a rule for get_indexes_and_sourcetypes: 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 Splunk. Nothing to install.
get_indexes_and_sourcetypes 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 get_indexes_and_sourcetypes 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 get_indexes_and_sourcetypes. 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.
get_indexes_and_sourcetypes is provided by the Splunk MCP server (livehybrid/splunk-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Splunk, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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12 Splunk tools catalogued and risk-classified — across an index of 43,000+ MCP servers.