Polarion MCP Server

getDocumentPart

Read-only

Retrieve a specific document part by its ID within a Polarion project, space, and document. Supports sparse fields and related resources to reduce payload and follow-up calls.

Instructions

Returns the specified Document Part. Cardinality: targets a single item by ID. For the full collection or a batch, use getDocumentParts instead.

Input Schema

TableJSON Schema

Name	Required	Description
`fields`	No	Sparse fieldset selector: an object keyed by resource type (e.g. `workitems`) whose value is a comma-separated list of attribute names to return (e.g. `id,title,status`), reducing payload size. Omit to return the default field set.
`partId`	Yes	The Document Part ID.
`include`	No	Comma-separated list of related resource types to embed in the response (e.g. `author,attachments`) so they don't require a separate follow-up call. Omit to return only the primary resource.
`spaceId`	Yes	The Document Space ID (a folder-like grouping of documents/pages within a project). Use `_default` (no quotes) to address the project's default space.
`revision`	No	A specific repository revision (e.g. `1234`) to read the resource as it existed at that revision instead of the current HEAD. Omit to use the latest revision.
`projectId`	Yes	The Polarion project ID (its URL segment, e.g. `myproject`), case-sensitive. Required to scope the request to one project; call getProjects to list valid IDs.
`documentName`	Yes	The Document name.

Output Schema

TableJSON Schema

Name	Required	Description
`data`	No
`links`	No
`included`	No	Related entities might be returned, see <a href="https://docs.sw.siemens.com/en-US/doc/230235217/PL20250606201928474.polarion_help_sc.xid2134849/xid2134871" target="_blank">REST API User Guide</a>.

Schema Changelog

Changes observed during successful MCP inspections.

Changed5 schema fields changedv1.2.0Sep 17, 2026

changedInput schema / properties / fields / description

Previous value: -"Filter returned resource fields. See <a href=\"https://docs.sw.siemens.com/en-US/doc/230235217/PL20250606201928474.polarion_help_sc.xid2134849/xid2134871\" target=\"_blank\">REST API User Guide</a> for details."New value: +"Sparse fieldset selector: an object keyed by resource type (e.g. `workitems`) whose value is a comma-separated list of attribute names to return (e.g. `id,title,status`), reducing payload size. Omit to return the default field set."

changedInput schema / properties / include / description

Previous value: -"Include related entities. See <a href=\"https://docs.sw.siemens.com/en-US/doc/230235217/PL20250606201928474.polarion_help_sc.xid2134849/xid2134871\" target=\"_blank\">REST API User Guide</a> for details."New value: +"Comma-separated list of related resource types to embed in the response (e.g. `author,attachments`) so they don't require a separate follow-up call. Omit to return only the primary resource."

changedInput schema / properties / projectId / description

Previous value: -"The Project ID."New value: +"The Polarion project ID (its URL segment, e.g. `myproject`), case-sensitive. Required to scope the request to one project; call getProjects to list valid IDs."

changedInput schema / properties / revision / description

Previous value: -"The revision ID."New value: +"A specific repository revision (e.g. `1234`) to read the resource as it existed at that revision instead of the current HEAD. Omit to use the latest revision."

changedInput schema / properties / spaceId / description

Previous value: -"The Space ID. (Use '_default' without quotes to address the default Space.)"New value: +"The Document Space ID (a folder-like grouping of documents/pages within a project). Use `_default` (no quotes) to address the project's default space."

Changed1 schema field changedv1.1.0Sep 11, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "data": {
+      "properties": {
+        "attributes": {
+          "properties": {
+            "content": {
+              "description": "Editable only for normal and table document parts.",
+              "example": "<div id=\"polarion_wiki macro name=module-workitem;params=id=workitem_MyWorkItemId\"></div>",
+              "type": "string"
+            },
+            "external": {
+              "description": "Whether the work item is external to the document. Applicable to: workitem parts.",
+              "type": "boolean"
+            },
+            "headingText": {
+              "description": "Applicable to: heading parts.",
+              "example": "Heading Title",
+              "type": "string"
+            },
+            "id": {
+              "example": "workitem_MyWorkItemId",
+              "type": "string"
+            },
+            "landscape": {
+              "description": "Whether the page break switches to landscape orientation. Applicable to: pagebreak parts.",
+              "type": "boolean"
+            },
+            "layout": {
+              "description": "Rendering layout index for the part. Applicable to: workitem parts.",
+              "example": 0,
+              "format": "int32",
+              "type": "integer"
+            },
+            "level": {
+              "description": "Outline level/depth of the part in the document hierarchy. Applicable to: heading, workitem parts.",
+              "example": 0,
+              "format": "int32",
+              "type": "integer"
+            },
+            "sequence": {
+              "description": "Sequence identifier for table of figures entry. Applicable to: tof parts.",
+              "example": "Table",
+              "type": "string"
+            },
+            "type": {
+              "description": "Possible values: heading, normal, pagebreak, table, toc, tof, wikiblock, workitem. Required for creation.",
+              "example": "workitem",
+              "type": "string"
+            },
+            "wikiText": {
+              "description": "Wiki markup content for the block. Applicable to: wikiblock parts.",
+              "example": "#documentPanel(true \"approved\")",
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "id": {
+          "example": "MyProjectId/MySpaceId/MyDocumentId/workitem_MyWorkItemId",
+          "type": "string"
+        },
+        "links": {
+          "properties": {
+            "self": {
+              "example": "server-host-name/application-path/projects/MyProjectId/spaces/MySpaceId/documents/MyDocumentId/parts/workitem_MyWorkItemId?revision=1234",
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "meta": {
+          "properties": {
+            "errors": {
+              "items": {
+                "properties": {
+                  "detail": {
+                    "description": "Human-readable explanation specific to this occurrence of the problem.",
+                    "example": "Unexpected token, BEGIN_ARRAY expected, but was : BEGIN_OBJECT (at $.data)",
+                    "type": "string"
+                  },
+                  "source": {
+                    "properties": {
+                      "parameter": {
+                        "description": "String indicating which URI query parameter caused the error.",
+                        "example": "revision",
+                        "type": "string"
+                      },
+                      "pointer": {
+                        "description": "JSON Pointer to the associated entity in the request document.",
+                        "example": "$.data",
+                        "type": "string"
+                      },
+                      "resource": {
+                        "description": "Resource causing the error.",
+                        "properties": {
+                          "id": {
+                            "example": "MyProjectId/id",
+                            "type": "string"
+                          },
+                          "type": {
+                            "example": "type",
+                            "type": "string"
+                          }
+                        },
+                        "type": "object"
+                      }
+                    },
+                    "type": "object"
+                  },
+                  "status": {
+                    "description": "HTTP status code applicable to this problem.",
+                    "example": "400",
+                    "type": "string"
+                  },
+                  "title": {
+                    "description": "Short, human-readable summary of the problem.",
+                    "example": "Bad Request",
+                    "type": "string"
+                  }
+                },
+                "type": "object"
+              },
+              "type": "array"
+            }
+          },
+          "type": "object"
+        },
+        "relationships": {
+          "properties": {
+            "nextPart": {
+              "properties": {
+                "data": {
+                  "properties": {
+                    "id": {
+                      "example": "MyProjectId/MySpaceId/MyDocumentId/workitem_MyWorkItemId",
+                      "type": "string"
+                    },
+                    "revision": {
+                      "example": "1234",
+                      "type": "string"
+                    },
+                    "type": {
+                      "enum": [
+                        "document_parts"
+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "type": "object"
+                }
+              },
+              "type": "object"
+            },
+            "previousPart": {
+              "properties": {
+                "data": {
+                  "properties": {
+                    "id": {
+                      "example": "MyProjectId/MySpaceId/MyDocumentId/workitem_MyWorkItemId",
+                      "type": "string"
+                    },
+                    "revision": {
+                      "example": "1234",
+                      "type": "string"
+                    },
+                    "type": {
+                      "enum": [
+                        "document_parts"
+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "type": "object"
+                }
+              },
+              "type": "object"
+            },
+            "workItem": {
+              "properties": {
+                "data": {
+                  "properties": {
+                    "id": {
+                      "example": "MyProjectId/MyWorkItemId",
+                      "type": "string"
+                    },
+                    "revision": {
+                      "example": "1234",
+                      "type": "string"
+                    },
+                    "type": {
+                      "enum": [
+                        "workitems"
+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "type": "object"
+                }
+              },
+              "type": "object"
+            }
+          },
+          "type": "object"
+        },
+        "revision": {
+          "example": "1234",
+          "type": "string"
+        },
+        "type": {
+          "enum": [
+            "document_parts"
+          ],
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "included": {
+      "description": "Related entities might be returned, see <a href=\"https://docs.sw.siemens.com/en-US/doc/230235217/PL20250606201928474.polarion_help_sc.xid2134849/xid2134871\" target=\"_blank\">REST API User Guide</a>.",
+      "items": {
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "links": {
+      "properties": {
+        "self": {
+          "example": "server-host-name/application-path/projects/MyProjectId/spaces/MySpaceId/documents/MyDocumentId/parts/workitem_MyWorkItemId?revision=1234",
+          "type": "string"
+        }
+      },
+      "type": "object"
+    }
+  },
+  "type": "object"
+}

Changed2 schema fields changedSep 7, 2026

changedInput schema / properties / fields / description

Previous value: -"Filter returned resource fields. See <a href=\"https://docs.sw.siemens.com/en-US/doc/230235217/PL20231017526942799.polarion_help_sc.xid2134849/xid2134871\" target=\"_blank\">REST API User Guide</a> for details."New value: +"Filter returned resource fields. See <a href=\"https://docs.sw.siemens.com/en-US/doc/230235217/PL20250606201928474.polarion_help_sc.xid2134849/xid2134871\" target=\"_blank\">REST API User Guide</a> for details."

changedInput schema / properties / include / description

Previous value: -"Include related entities. See <a href=\"https://docs.sw.siemens.com/en-US/doc/230235217/PL20231017526942799.polarion_help_sc.xid2134849/xid2134871\" target=\"_blank\">REST API User Guide</a> for details."New value: +"Include related entities. See <a href=\"https://docs.sw.siemens.com/en-US/doc/230235217/PL20250606201928474.polarion_help_sc.xid2134849/xid2134871\" target=\"_blank\">REST API User Guide</a> for details."

First observedv1.0.0Jun 13, 2026

TDQS

A4.5/5.0

Behavior4/5

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

Annotations already declare `readOnlyHint: true` and `openWorldHint: true`, so the safety profile is covered. The description adds useful behavioral context: this is a single-item fetch by ID, not a collection or batch operation. While it doesn't discuss auth or error behavior, the annotation coverage lowers the burden and the cardinality clarification is genuinely valuable.

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?

Two sentences with no filler. The primary action is front-loaded, the cardinality constraint is stated clearly, and the sibling alternative is given in the second sentence. Every word earns its place.

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

Completeness5/5

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

For a single-item read tool with detailed parameter descriptions in the schema, an output schema, and annotations covering read-only behavior, nothing essential is missing. The sibling pointer for batch/full-collection needs completes the contextual picture.

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

Parameters3/5

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

Schema description coverage is 100% and each parameter already has a thorough description, including `partId`, `projectId`, `spaceId`, `documentName`, and optional `fields`, `include`, and `revision`. The tool description adds no parameter-level detail beyond referencing the item ID, so a baseline score of 3 is appropriate when the schema does the heavy lifting.

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 names a specific verb ('Returns') and resource ('the specified Document Part'), and explicitly states cardinality ('targets a single item by ID'). It also distinguishes itself from the sibling `getDocumentParts`, so an agent can immediately tell which tool matches a single-item request.

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

Usage Guidelines5/5

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

The description explicitly gives the condition for using an alternative: 'For the full collection or a batch, use `getDocumentParts` instead.' This tells the agent when not to use this tool and names the correct sibling, leaving no ambiguity.

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

Deploy Server