Plane MCP Server

list_milestone_work_items

Fetch all work items for a milestone using project and milestone IDs. Get a clear view of tasks to track progress.

Instructions

List work items in a milestone.

Args: project_id: UUID of the project milestone_id: UUID of the milestone params: Optional query parameters as a dictionary

Returns: List of MilestoneWorkItem objects in the milestone

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "project_id": "<project_id>",
      "milestone_id": "<milestone_id>"
    },
    "name": "list_milestone_work_items"
  }
}

Input Schema

Name	Required	Description	Default
`params`	No
`project_id`	Yes
`milestone_id`	Yes

Output Schema

Name	Required	Description	Default
`result`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.2.11Aug 7, 2026

TDQS

A3.8/5.0

Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries full responsibility. It does not explicitly state whether the operation is read-only, the required auth permissions, or any pagination/filtering behavior. The only behavioral detail (return type) is redundant with the output schema.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise and well-structured: a one-sentence purpose, then Args and Returns sections. Each sentence serves a distinct purpose without fluff, and the most important information is front-loaded.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description is sufficient for a basic call with required IDs, and the output schema covers return values. The optional params remain a black box, but that is a common pattern. For a straightforward list operation, the provided context is adequate.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 0% schema description coverage, the description compensates by clarifying semantic meaning: project_id and milestone_id are identified as UUIDs, and params is described as an optional query-parameters dictionary. This goes beyond the schema's raw string/object types, though it does not enumerate valid query params.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states 'List work items in a milestone' with a specific verb ('List') and resource ('work items in a milestone'). The name and description distinguish it from sibling tools like list_cycle_work_items or list_module_work_items by explicitly naming the milestone scope.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Usage is implied by the tool name and argument descriptions: use when you have a project_id and milestone_id and want the work items in that milestone. However, no explicit guidance is given on when to prefer this over alternatives like list_work_items, list_cycle_work_items, or manage_milestone_work_items.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Deploy Server