download_attachment
AI agents call download_attachment to retrieve information from MCP Atlassian without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Downloading attachments is a read operation that retrieves existing data without modification, deletion, or execution of external systems. While the description is empty, the naming convention and context among sibling read-only tools strongly indicate this retrieves and returns file content. No side effects on the attachment itself or downstream systems are implied.
From the tool's definition Tool name 'download_attachment' and sibling tools like 'download_attachments', 'download_content_attachments', 'get_attachments', 'get_comments' all indicate retrieval operations.
Attacks that exploit this kind of access
download_attachment. It is categorised as a Read tool in the MCP Atlassian MCP Server, which means it retrieves data without modifying state.
Register the MCP Atlassian MCP server in PolicyLayer and add a rule for download_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 MCP Atlassian. Nothing to install.
download_attachment 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 download_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 download_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.
download_attachment is provided by the MCP Atlassian MCP server (lklkxcxc/mcp-atlassian). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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