get-download-url

SERVERMs 365 SOURCE@jo3zik/ms-365-mcp-server

Low RISK CLASS

Category Read

Parameters 11 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/jo3zik-ms-365-mcp-server/get-download-url.md

WHAT IT DOES

What get-download-url does on Ms 365

AI agents call get-download-url to retrieve information from Ms 365 without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`target`	string	Yes	Relative Microsoft Graph path starting with "/". Either a driveItem content path or the item path itself, e.g. /drives/{drive-id}/items/{driveItem-id}/content,

Parameters from the server's own tool schema.

RISK

Why get-download-url is rated Low

Even though get-download-url only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get-download-url safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Ms 365, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get-download-url, this is the rule to start with:

get-download-url Allowed

get-download-url is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get-download-url": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ms 365, apply this rule, and every get-download-url call is checked against it from then on.

FAQ

Questions about get-download-url

What does the get-download-url tool do? +

Resolve a short-lived, pre-authenticated download URL for Microsoft Graph binary content that exposes one (drive/SharePoint file content). The returned URL streams the bytes with NO Authorization header, so the client can fetch it straight to disk (e.g. curl) without round-tripping base64 through the agent context. Prefer this over download-bytes for any file above a few KB or any bulk download. Returns { downloadUrl, name?, size?, contentType? }. NOTE: mail file attachments (/messages/{id}/attachments/{id}/$value) and meeting recordings do NOT expose a pre-authenticated URL — Graph offers no such link for them; use download-bytes for small ones. It is categorised as a Read tool in the Ms 365 MCP Server, which means it retrieves data without modifying state.

What parameters does get-download-url accept? +

get-download-url accepts 1 parameter: target. Required: target. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on get-download-url? +

Register the Ms 365 MCP server in PolicyLayer and add a rule for get-download-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 Ms 365. Nothing to install.

What risk level is get-download-url? +

get-download-url is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get-download-url? +

Yes. Add a rate_limit block to the get-download-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.

How do I block get-download-url completely? +

Set action: deny in the PolicyLayer policy for get-download-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.

What MCP server provides get-download-url? +

get-download-url is provided by the Ms 365 MCP server (@jo3zik/ms-365-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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