# create_milestone

Create a new milestone for a project

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

## Facts

- Tool: `create_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: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

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

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

## Why create_milestone is rated Medium

This tool creates a new milestone, which is a reversible write operation—milestones can be updated, deleted, or modified later. It does not execute arbitrary code, delete data irreversibly, or move money. The severity is medium because misuse could create unwanted milestones that clutter project tracking, but the impact is containable through standard project management cleanup operations.

From the tool's own definition: "Tool name 'create_milestone' and description 'Create a new milestone for a project' indicate creation of a new data object in Linear's project management system."

## Use case

AI agents use create_milestone to create or update resources in Linear Kanban Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Linear Kanban Server environment.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_milestone": {
      "limits": [
        {
          "counter": "create_milestone_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Linear Kanban Server (21)

- `delete_issue` — Destructive — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/delete-issue.md
- `delete_milestone` — Destructive — https://policylayer.com/tools/0xikarus-linear-kanban-mcp/delete-milestone.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_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