delete_milestone

Delete a milestone

SERVERLinear Kanban Server SOURCE0xikarus/linear-kanban-mcp

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/0xikarus-linear-kanban-mcp/delete-milestone.md

WHAT IT DOES

What delete_milestone does on Linear Kanban Server

AI agents call delete_milestone to permanently remove resources in Linear Kanban Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why delete_milestone is rated Critical

Deleting a milestone removes project planning data that cannot be recovered through normal means, potentially affecting multiple associated issues and project timelines. This is an irreversible operation with significant project management impact, making it Destructive rather than merely Write.

From the tool's definition Tool name is 'delete_milestone' and description states 'Delete a milestone', explicitly indicating irreversible deletion of data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs delete_milestone safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Linear Kanban Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For delete_milestone, this is the rule to start with:

delete_milestone Hidden

delete_milestone is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_milestone"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Linear Kanban Server, apply this rule, and every delete_milestone call is checked against it from then on.

FAQ

Questions about delete_milestone

What does the delete_milestone tool do? +

Delete a milestone. It is categorised as a Destructive tool in the Linear Kanban Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on delete_milestone? +

Register the Linear Kanban Server MCP server in PolicyLayer and add a rule for delete_milestone: 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 Linear Kanban Server. Nothing to install.

What risk level is delete_milestone? +

delete_milestone is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit delete_milestone? +

Yes. Add a rate_limit block to the delete_milestone 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 delete_milestone completely? +

Set action: deny in the PolicyLayer policy for delete_milestone. 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 delete_milestone? +

delete_milestone is provided by the Linear Kanban Server MCP server (0xikarus/linear-kanban-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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