# delete_milestone

Delete a milestone

Agent View of the PolicyLayer registry record for `delete_milestone`. HTML page: https://policylayer.com/tools/0xikarus-linear-kanban-mcp/delete-milestone

## Facts

- Tool: `delete_milestone`
- Server: Linear Kanban Server (`0xikarus/linear-kanban-mcp`) — https://policylayer.com/tools/0xikarus-linear-kanban-mcp.md
- Homepage: https://github.com/0xikarus/linear-kanban-mcp
- Risk category: Destructive (Critical risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Hidden

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "delete_milestone",
    "arguments": {}
  }
}
```

## 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 own definition: "Tool name is 'delete_milestone' and description states 'Delete a milestone', explicitly indicating irreversible deletion of data."

## Use case

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.

## Recommended policy (PolicyLayer)

Verdict: **Hidden**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Linear Kanban Server:

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

## Other tools on Linear Kanban Server (21)

- `delete_issue` — Destructive — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/delete-issue.md
- `get_issue` — Read — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/get-issue.md
- `get_milestone` — Read — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/get-milestone.md
- `get_project` — Read — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/get-project.md
- `list_issues` — Read — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/list-issues.md
- `list_milestone_issues` — Read — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/list-milestone-issues.md
- `list_milestones` — Read — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/list-milestones.md
- `list_project_updates` — Read — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/list-project-updates.md
- `list_projects` — Read — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/list-projects.md
- `list_teams` — Read — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/list-teams.md
- `list_users` — Read — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/list-users.md
- `list_workflow_states` — Read — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/list-workflow-states.md
- `search_issues` — Read — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/search-issues.md
- `add_comment` — Write — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/add-comment.md
- `assign_issue_to_milestone` — Write — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/assign-issue-to-milestone.md
- `create_issue` — Write — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/create-issue.md
- `create_milestone` — Write — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/create-milestone.md
- `create_project_update` — Write — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/create-project-update.md
- `move_issue` — Write — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/move-issue.md
- `update_issue` — Write — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/update-issue.md
- `update_milestone` — Write — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/update-milestone.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=0xikarus-linear-kanban-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/0xikarus-linear-kanban-mcp