Get metadata for an attachment (filename, mime type, size, etc.).
AI agents call get_attachment_info to retrieve information from Bluebubbles without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata about attachments without modifying, deleting, executing, or moving any data. It is a straightforward read operation that returns informational properties of existing attachments. The low severity reflects minimal blast radius—an AI agent could at worst enumerate attachment properties, which poses no direct harm.
From the tool's definition Tool name 'get_attachment_info' and description 'Get metadata for an attachment (filename, mime type, size, etc.)' indicate retrieval of information only. The verb 'Get' and the focus on 'metadata' confirm this is a query operation with no side effects.
Attacks that exploit this kind of access
Get metadata for an attachment (filename, mime type, size, etc.). It is categorised as a Read tool in the Bluebubbles MCP Server, which means it retrieves data without modifying state.
Register the Bluebubbles MCP server in PolicyLayer and add a rule for get_attachment_info: 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 Bluebubbles. Nothing to install.
get_attachment_info 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_attachment_info 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_attachment_info. 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_attachment_info is provided by the Bluebubbles MCP server (metaember/bluebubbles-mcp). 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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