Upload a document and attach it to an existing sales invoice.
AI agents use quickfile_document_upload_sales_attachment to create or update resources in QuickFile MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your QuickFile MCP Server environment.
This tool creates a new file resource (the attachment) and modifies an existing invoice record by linking it. These are reversible changes (the attachment can be deleted, the link removed). It does not execute code, delete data irreversibly, or move money. The medium severity reflects that misuse could add fraudulent documents to invoices or clutter financial records, but the damage is contained and remediable.
From the tool's definition Tool uploads a document and attaches it to an existing sales invoice—'Upload' and 'attach' indicate file creation/storage and modification of invoice records.
Attacks that exploit this kind of access
Upload a document and attach it to an existing sales invoice. It is categorised as a Write tool in the QuickFile MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the QuickFile MCP Server MCP server in PolicyLayer and add a rule for quickfile_document_upload_sales_attachment: 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 QuickFile MCP Server. Nothing to install.
quickfile_document_upload_sales_attachment 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 quickfile_document_upload_sales_attachment 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 quickfile_document_upload_sales_attachment. 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.
quickfile_document_upload_sales_attachment is provided by the QuickFile MCP Server MCP server (marcusquinn/quickfile-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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