Polarion MCP Server

getRevision

Read-only

Retrieves a single Polarion repository revision by number, returning author, timestamp, and commit message so you can inspect who changed data at a known revision.

Instructions

Returns one repository revision (commit) by its number: author, timestamp, and commit message. Use it to see who changed data at a known revision, e.g. a revision value seen on a resource; to search or page through revision history use getRevisions. Cardinality: targets a single item by ID. For the full collection or a batch, use getRevisions instead.

Input Schema

Name	Required	Description	Default
`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.
`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.
`revision`	Yes	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.
`repositoryName`	Yes	The Repository Name.
`response_format`	No	Response detail level. concise removes redundant HTML and JSON:API metadata and may use a small default fieldset on large lists; detailed preserves the complete response. Defaults to detailed.	detailed

Output 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.

Changed1 schema field changedv1.4.0Oct 24, 2026

addedInput schema / properties / response_format

Added value: +{
+  "default": "detailed",
+  "description": "Response detail level. concise removes redundant HTML and JSON:API metadata and may use a small default fieldset on large lists; detailed preserves the complete response. Defaults to detailed.",
+  "enum": [
+    "concise",
+    "detailed"
+  ],
+  "type": "string"
+}

Changed53 schema fields changedv1.3.1Oct 22, 2026
- removedOutput schema / properties / data / properties / attributes / properties / created / example
```
Removed value: -"1970-01-01T00:00:00Z"
```
- removedOutput schema / properties / data / properties / attributes / properties / created / format
```
Removed value: -"date-time"
```
- changedOutput schema / properties / data / properties / attributes / properties / created / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- changedOutput schema / properties / data / properties / attributes / properties / id / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- changedOutput schema / properties / data / properties / attributes / properties / internalCommit / type
```
Previous value: -"boolean"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / attributes / properties / message / example
```
Removed value: -"Message"
```
- changedOutput schema / properties / data / properties / attributes / properties / message / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / attributes / properties / repositoryName / example
```
Removed value: -"Repository name"
```
- changedOutput schema / properties / data / properties / attributes / properties / repositoryName / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- changedOutput schema / properties / data / properties / attributes / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / id / example
```
Removed value: -"default/1234"
```
- changedOutput schema / properties / data / properties / id / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / links / properties / self / example
```
Removed value: -"server-host-name/application-path/revisions/default/1234"
```
- changedOutput schema / properties / data / properties / links / properties / self / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- changedOutput schema / properties / data / properties / links / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / meta / properties / errors / items / properties / detail / example
```
Removed value: -"Unexpected token, BEGIN_ARRAY expected, but was : BEGIN_OBJECT (at $.data)"
```
- changedOutput schema / properties / data / properties / meta / properties / errors / items / properties / detail / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / meta / properties / errors / items / properties / source / properties / parameter / example
```
Removed value: -"revision"
```
- changedOutput schema / properties / data / properties / meta / properties / errors / items / properties / source / properties / parameter / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / meta / properties / errors / items / properties / source / properties / pointer / example
```
Removed value: -"$.data"
```
- changedOutput schema / properties / data / properties / meta / properties / errors / items / properties / source / properties / pointer / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / meta / properties / errors / items / properties / source / properties / resource / properties / id / example
```
Removed value: -"MyProjectId/id"
```
- changedOutput schema / properties / data / properties / meta / properties / errors / items / properties / source / properties / resource / properties / id / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / meta / properties / errors / items / properties / source / properties / resource / properties / type / example
```
Removed value: -"type"
```
- changedOutput schema / properties / data / properties / meta / properties / errors / items / properties / source / properties / resource / properties / type / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- changedOutput schema / properties / data / properties / meta / properties / errors / items / properties / source / properties / resource / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / data / properties / meta / properties / errors / items / properties / source / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / meta / properties / errors / items / properties / status / example
```
Removed value: -"400"
```
- changedOutput schema / properties / data / properties / meta / properties / errors / items / properties / status / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / meta / properties / errors / items / properties / title / example
```
Removed value: -"Bad Request"
```
- changedOutput schema / properties / data / properties / meta / properties / errors / items / properties / title / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- changedOutput schema / properties / data / properties / meta / properties / errors / items / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / data / properties / meta / properties / errors / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / data / properties / meta / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / relationships / properties / author / properties / data / properties / id / example
```
Removed value: -"MyUserId"
```
- changedOutput schema / properties / data / properties / relationships / properties / author / properties / data / properties / id / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / relationships / properties / author / properties / data / properties / revision / example
```
Removed value: -"1234"
```
- changedOutput schema / properties / data / properties / relationships / properties / author / properties / data / properties / revision / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / relationships / properties / author / properties / data / properties / type / enum
```
Removed value: -[
-  "users"
-]
```
- changedOutput schema / properties / data / properties / relationships / properties / author / properties / data / properties / type / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- changedOutput schema / properties / data / properties / relationships / properties / author / properties / data / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / data / properties / relationships / properties / author / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / data / properties / relationships / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / revision / example
```
Removed value: -"1234"
```
- changedOutput schema / properties / data / properties / revision / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- removedOutput schema / properties / data / properties / type / enum
```
Removed value: -[
-  "revisions"
-]
```
- changedOutput schema / properties / data / properties / type / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- changedOutput schema / properties / data / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / included / items / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / included / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- removedOutput schema / properties / links / properties / self / example
```
Removed value: -"server-host-name/application-path/revisions/default/1234"
```
- changedOutput schema / properties / links / properties / self / type
```
Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
```
- changedOutput schema / properties / links / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```

Changed3 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 / 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."

Changed1 schema field changedv1.1.0Sep 11, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "data": {
+      "properties": {
+        "attributes": {
+          "properties": {
+            "created": {
+              "example": "1970-01-01T00:00:00Z",
+              "format": "date-time",
+              "type": "string"
+            },
+            "id": {
+              "type": "string"
+            },
+            "internalCommit": {
+              "type": "boolean"
+            },
+            "message": {
+              "example": "Message",
+              "type": "string"
+            },
+            "repositoryName": {
+              "example": "Repository name",
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "id": {
+          "example": "default/1234",
+          "type": "string"
+        },
+        "links": {
+          "properties": {
+            "self": {
+              "example": "server-host-name/application-path/revisions/default/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": {
+            "author": {
+              "properties": {
+                "data": {
+                  "properties": {
+                    "id": {
+                      "example": "MyUserId",
+                      "type": "string"
+                    },
+                    "revision": {
+                      "example": "1234",
+                      "type": "string"
+                    },
+                    "type": {
+                      "enum": [
+                        "users"
+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "type": "object"
+                }
+              },
+              "type": "object"
+            }
+          },
+          "type": "object"
+        },
+        "revision": {
+          "example": "1234",
+          "type": "string"
+        },
+        "type": {
+          "enum": [
+            "revisions"
+          ],
+          "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/revisions/default/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

A4.4/5.0

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 description does not need to establish the basic safety profile. It adds useful behavioral context beyond annotations by stating cardinality, single-item-by-ID targeting, and what identifying fields the result contains; it does not discuss permissions, errors, or rate limits, which keeps it at 4 rather than 5.

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

Conciseness4/5

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

The definition is front-loaded, states the core operation immediately, and stays compact. It repeats the `getRevisions` alternative in two separate sentences, which is slightly redundant, but otherwise every sentence serves selection or invocation guidance.

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?

With an output schema, complete schema descriptions, and read-only/open-world annotations, the description provides what an agent needs to choose this tool correctly. It clarifies the single-item scope and the alternative for batch/history access, while the schema covers the remaining parameter details.

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%, so the schema already documents all five parameters, including `revision`, `fields`, `include`, and `response_format`. The description reinforces that `revision` is a commit number but adds little semantic detail beyond the schema, so the baseline 3 is appropriate.

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 uses a specific verb and resource: returns one repository revision (commit) by its number, and names the returned fields. It explicitly distinguishes this single-item lookup from `getRevisions`, so an agent can separate the two without opening schemas.

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?

It gives a concrete use case, seeing who changed data at a known revision value, and repeatedly names the alternative for search, paging, full collection, or batch. Both when-to-use and when-to-use-something-else are explicit.

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

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