upload_document_from_url
Download a document from a URL and add it to your knowledge base. Supports PDF, DOCX, TXT, Markdown, CSV, and JSON files (max 50MB). Can upload to personal or team knowledge base.
This record as markdown: /tools/flowdot-llc-mcp-server/upload-document-from-url.md
What upload_document_from_url does on FlowDot MCP Server
AI agents use upload_document_from_url to create or update resources in FlowDot MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your FlowDot MCP Server environment.
Why upload_document_from_url is rated Medium
This tool creates new data (documents) in the knowledge base, which is a Write operation. It is reversible (documents can typically be deleted from a knowledge base). Severity is medium because an AI agent could be tricked into uploading malicious, sensitive, or inappropriate documents to a shared knowledge base (particularly a team one), causing reputational or operational harm, though no financial or destructive…
From the tool's definition Tool description explicitly states 'Download a document from a URL and add it to your knowledge base' — the 'add' operation modifies the knowledge base by creating new entries.
Attacks that exploit this kind of access
The rule that runs upload_document_from_url safely
PolicyLayer is an MCP gateway: it sits between your AI agents and FlowDot MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For upload_document_from_url, this is the rule to start with:
upload_document_from_url stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect FlowDot MCP Server, apply this rule, and every upload_document_from_url call is checked against it from then on.
Questions about upload_document_from_url
Download a document from a URL and add it to your knowledge base. Supports PDF, DOCX, TXT, Markdown, CSV, and JSON files (max 50MB). Can upload to personal or team knowledge base. It is categorised as a Write tool in the FlowDot MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the FlowDot MCP Server MCP server in PolicyLayer and add a rule for upload_document_from_url: 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 FlowDot MCP Server. Nothing to install.
upload_document_from_url is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the upload_document_from_url 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 upload_document_from_url. 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.
upload_document_from_url is provided by the FlowDot MCP Server MCP server (flowdot-llc/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on FlowDot MCP Server, and thousands of servers like it.
This server
Across the catalogue