Get supported file formats (PDF, Office, ZIP) and their capabilities.
AI agents call get_supported_file_formats to retrieve information from Crawl-MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a simple informational query tool that returns metadata about what file formats the server supports and their capabilities. It has no side effects, does not execute code or commands, does not modify data, and does not involve financial transactions. The blast radius of misuse is negligible—an AI agent cannot cause harm by querying supported formats.
From the tool's definition Tool name 'get_supported_file_formats' and description 'Get supported file formats' indicate a query operation that retrieves information about capabilities without modifying, executing, or deleting anything.
Documented attack patterns abuse exactly the kind of access get_supported_file_formats gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Crawl-MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for get_supported_file_formats:
{
"version": "1",
"default": "deny",
"tools": {
"get_supported_file_formats": {}
}
}get_supported_file_formats is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get supported file formats (PDF, Office, ZIP) and their capabilities. It is categorised as a Read tool in the Crawl-MCP MCP Server, which means it retrieves data without modifying state.
Register the Crawl- MCP server in PolicyLayer and add a rule for get_supported_file_formats: 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 Crawl-MCP. Nothing to install.
get_supported_file_formats 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_supported_file_formats 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_supported_file_formats. 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_supported_file_formats is provided by the Crawl- MCP server (walksoda/crawl-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 19 Crawl-MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
19 Crawl-MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.