Gets a list of filters on a source. Args: source_name: Name of the source to get the filters of Returns: Dict with filters array (each with name, kind, index, settings)
AI agents call get_source_filter_list to retrieve information from OBS 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 information about filters applied to an OBS source without modifying any state. It is a pure query operation that returns data about the configuration. No resources are created, modified, deleted, or external operations triggered. This fits the Read category of safe reconnaissance operations.
From the tool's definition Tool name is 'get_source_filter_list' and description states it 'Gets a list of filters on a source' with return value of 'Dict with filters array'. The verb 'Gets' and read-only return of metadata indicates no side effects.
Documented attack patterns abuse exactly the kind of access get_source_filter_list gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and OBS MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_source_filter_list:
{
"version": "1",
"default": "deny",
"tools": {
"get_source_filter_list": {}
}
}get_source_filter_list is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Gets a list of filters on a source. Args: source_name: Name of the source to get the filters of Returns: Dict with filters array (each with name, kind, index, settings). It is categorised as a Read tool in the OBS MCP Server MCP Server, which means it retrieves data without modifying state.
Register the OBS MCP Server MCP server in PolicyLayer and add a rule for get_source_filter_list: 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 OBS MCP Server. Nothing to install.
get_source_filter_list 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_source_filter_list 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_source_filter_list. 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_source_filter_list is provided by the OBS MCP Server MCP server (royshil/obs-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 200 OBS MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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200 OBS MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.