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Polarion MCP Server

Polarion MCP Server

by phillipboesger
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Hybrid

getRevisions

Read-only

Returns repository revisions (commits) with author, timestamp, and commit message, filterable and paginated. Use to audit changes across a repository; for a single known revision, use getRevision.

Instructions

Returns repository revisions (commits) with author, timestamp, and commit message, paginated and filterable with query. Use it to audit recent changes across the repository; for one known revision number use getRevision. Cardinality: targets the full collection or a batch. For a single item by ID, use getRevision instead.

Input Schema

NameRequiredDescriptionDefault
sortNoComma-separated list of fields to sort by, in priority order; prefix a field with `-` for descending order (e.g. `-updated,title`).
queryNoPolarion Lucene-style query string to filter results: field:value clauses combined with AND/OR, phrases in quotes. Exact supported field names depend on the resource type being queried.
fieldsNoSparse 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.
includeNoComma-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.
max_itemsNoCollect up to this many results across pages (maximum 1000). Omit to fetch only the requested page, as before.
page_size_NoMaximum number of items to return in this page (e.g. `100`). Use together with `page[number]` to paginate through a large result set.
page_number_No1-based page number to fetch when the result set is paginated (e.g. `2` for the second page). Combine with `page[size]`; omit to fetch the first page.
response_formatNoResponse 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

NameRequiredDescriptionDefault
dataNo
metaNo
linksNo
includedNoRelated 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.

  1. Changed2 schema fields changedv1.4.0
    • addedInput schema / properties / max_items
      Added value: +{
+  "description": "Collect up to this many results across pages (maximum 1000). Omit to fetch only the requested page, as before.",
+  "maximum": 1000,
+  "minimum": 1,
+  "type": "integer"
+}
    • 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"
+}
  2. Changed65 schema fields changedv1.3.1
    • removedOutput schema / properties / data / items / properties / attributes / properties / created / example
      Removed value: -"1970-01-01T00:00:00Z"
    • removedOutput schema / properties / data / items / properties / attributes / properties / created / format
      Removed value: -"date-time"
    • changedOutput schema / properties / data / items / properties / attributes / properties / created / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • changedOutput schema / properties / data / items / properties / attributes / properties / id / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • changedOutput schema / properties / data / items / properties / attributes / properties / internalCommit / type
      Previous value: -"boolean"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • removedOutput schema / properties / data / items / properties / attributes / properties / message / example
      Removed value: -"Message"
    • changedOutput schema / properties / data / items / properties / attributes / properties / message / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • removedOutput schema / properties / data / items / properties / attributes / properties / repositoryName / example
      Removed value: -"Repository name"
    • changedOutput schema / properties / data / items / properties / attributes / properties / repositoryName / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • changedOutput schema / properties / data / items / properties / attributes / type
      Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
    • removedOutput schema / properties / data / items / properties / id / example
      Removed value: -"default/1234"
    • changedOutput schema / properties / data / items / properties / id / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • removedOutput schema / properties / data / items / properties / links / properties / self / example
      Removed value: -"server-host-name/application-path/revisions/default/1234"
    • changedOutput schema / properties / data / items / properties / links / properties / self / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • changedOutput schema / properties / data / items / properties / links / type
      Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
    • removedOutput schema / properties / data / items / properties / meta / properties / errors / items / properties / detail / example
      Removed value: -"Unexpected token, BEGIN_ARRAY expected, but was : BEGIN_OBJECT (at $.data)"
    • changedOutput schema / properties / data / items / properties / meta / properties / errors / items / properties / detail / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • removedOutput schema / properties / data / items / properties / meta / properties / errors / items / properties / source / properties / parameter / example
      Removed value: -"revision"
    • changedOutput schema / properties / data / items / properties / meta / properties / errors / items / properties / source / properties / parameter / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • removedOutput schema / properties / data / items / properties / meta / properties / errors / items / properties / source / properties / pointer / example
      Removed value: -"$.data"
    • changedOutput schema / properties / data / items / properties / meta / properties / errors / items / properties / source / properties / pointer / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • removedOutput schema / properties / data / items / properties / meta / properties / errors / items / properties / source / properties / resource / properties / id / example
      Removed value: -"MyProjectId/id"
    • changedOutput schema / properties / data / items / 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 / items / properties / meta / properties / errors / items / properties / source / properties / resource / properties / type / example
      Removed value: -"type"
    • changedOutput schema / properties / data / items / 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 / items / properties / meta / properties / errors / items / properties / source / properties / resource / type
      Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
    • changedOutput schema / properties / data / items / properties / meta / properties / errors / items / properties / source / type
      Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
    • removedOutput schema / properties / data / items / properties / meta / properties / errors / items / properties / status / example
      Removed value: -"400"
    • changedOutput schema / properties / data / items / properties / meta / properties / errors / items / properties / status / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • removedOutput schema / properties / data / items / properties / meta / properties / errors / items / properties / title / example
      Removed value: -"Bad Request"
    • changedOutput schema / properties / data / items / properties / meta / properties / errors / items / properties / title / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • changedOutput schema / properties / data / items / properties / meta / properties / errors / items / type
      Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
    • changedOutput schema / properties / data / items / properties / meta / properties / errors / type
      Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
    • changedOutput schema / properties / data / items / properties / meta / type
      Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
    • removedOutput schema / properties / data / items / properties / relationships / properties / author / properties / data / properties / id / example
      Removed value: -"MyUserId"
    • changedOutput schema / properties / data / items / properties / relationships / properties / author / properties / data / properties / id / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • removedOutput schema / properties / data / items / properties / relationships / properties / author / properties / data / properties / revision / example
      Removed value: -"1234"
    • changedOutput schema / properties / data / items / properties / relationships / properties / author / properties / data / properties / revision / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • removedOutput schema / properties / data / items / properties / relationships / properties / author / properties / data / properties / type / enum
      Removed value: -[
-  "users"
-]
    • changedOutput schema / properties / data / items / properties / relationships / properties / author / properties / data / properties / type / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • changedOutput schema / properties / data / items / properties / relationships / properties / author / properties / data / type
      Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
    • changedOutput schema / properties / data / items / properties / relationships / properties / author / type
      Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
    • changedOutput schema / properties / data / items / properties / relationships / type
      Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
    • removedOutput schema / properties / data / items / properties / revision / example
      Removed value: -"1234"
    • changedOutput schema / properties / data / items / properties / revision / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • removedOutput schema / properties / data / items / properties / type / enum
      Removed value: -[
-  "revisions"
-]
    • changedOutput schema / properties / data / items / properties / type / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • changedOutput schema / properties / data / items / type
      Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
    • changedOutput schema / properties / data / type
      Previous value: -"array"New value: +[
+  "array",
+  "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 / first / example
      Removed value: -"server-host-name/application-path/revisions/default?page%5Bsize%5D=10&page%5Bnumber%5D=1"
    • changedOutput schema / properties / links / properties / first / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • removedOutput schema / properties / links / properties / last / example
      Removed value: -"server-host-name/application-path/revisions/default?page%5Bsize%5D=10&page%5Bnumber%5D=9"
    • changedOutput schema / properties / links / properties / last / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • removedOutput schema / properties / links / properties / next / example
      Removed value: -"server-host-name/application-path/revisions/default?page%5Bsize%5D=10&page%5Bnumber%5D=6"
    • changedOutput schema / properties / links / properties / next / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • removedOutput schema / properties / links / properties / prev / example
      Removed value: -"server-host-name/application-path/revisions/default?page%5Bsize%5D=10&page%5Bnumber%5D=4"
    • changedOutput schema / properties / links / properties / prev / type
      Previous value: -"string"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • removedOutput schema / properties / links / properties / self / example
      Removed value: -"server-host-name/application-path/revisions/default?page%5Bsize%5D=10&page%5Bnumber%5D=5"
    • 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"
+]
    • removedOutput schema / properties / meta / properties / totalCount / format
      Removed value: -"int32"
    • changedOutput schema / properties / meta / properties / totalCount / type
      Previous value: -"integer"New value: +[
+  "string",
+  "number",
+  "integer",
+  "boolean",
+  "null"
+]
    • changedOutput schema / properties / meta / type
      Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
  3. Changed6 schema fields changedv1.2.0
    • 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 / page_number_ / description
      Previous value: -"Specify the page number to be returned. Counting starts from 1. 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: +"1-based page number to fetch when the result set is paginated (e.g. `2` for the second page). Combine with `page[size]`; omit to fetch the first page."
    • changedInput schema / properties / page_size_ / description
      Previous value: -"Limit the number of entities returned in a single response. 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: +"Maximum number of items to return in this page (e.g. `100`). Use together with `page[number]` to paginate through a large result set."
    • changedInput schema / properties / query / description
      Previous value: -"The query string."New value: +"Polarion Lucene-style query string to filter results: field:value clauses combined with AND/OR, phrases in quotes. Exact supported field names depend on the resource type being queried."
    • changedInput schema / properties / sort / description
      Previous value: -"The sort string."New value: +"Comma-separated list of fields to sort by, in priority order; prefix a field with `-` for descending order (e.g. `-updated,title`)."
  4. Changed1 schema field changedv1.1.0
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "properties": {
+    "data": {
+      "items": {
+        "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"
+      },
+      "type": "array"
+    },
+    "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": {
+        "first": {
+          "example": "server-host-name/application-path/revisions/default?page%5Bsize%5D=10&page%5Bnumber%5D=1",
+          "type": "string"
+        },
+        "last": {
+          "example": "server-host-name/application-path/revisions/default?page%5Bsize%5D=10&page%5Bnumber%5D=9",
+          "type": "string"
+        },
+        "next": {
+          "example": "server-host-name/application-path/revisions/default?page%5Bsize%5D=10&page%5Bnumber%5D=6",
+          "type": "string"
+        },
+        "prev": {
+          "example": "server-host-name/application-path/revisions/default?page%5Bsize%5D=10&page%5Bnumber%5D=4",
+          "type": "string"
+        },
+        "self": {
+          "example": "server-host-name/application-path/revisions/default?page%5Bsize%5D=10&page%5Bnumber%5D=5",
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "meta": {
+      "properties": {
+        "totalCount": {
+          "format": "int32",
+          "type": "integer"
+        }
+      },
+      "type": "object"
+    }
+  },
+  "type": "object"
+}
  5. Changed6 schema fields changed
    • 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."
    • removedInput schema / properties / page_number
      Removed value: -{
-  "description": "Specify the page number to be returned. Counting starts from 1. 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.",
-  "format": "int32",
-  "type": "number"
-}
    • addedInput schema / properties / page_number_
      Added value: +{
+  "description": "Specify the page number to be returned. Counting starts from 1. 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.",
+  "format": "int32",
+  "type": "number"
+}
    • removedInput schema / properties / page_size
      Removed value: -{
-  "description": "Limit the number of entities returned in a single response. 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.",
-  "format": "int32",
-  "type": "number"
-}
    • addedInput schema / properties / page_size_
      Added value: +{
+  "description": "Limit the number of entities returned in a single response. 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.",
+  "format": "int32",
+  "type": "number"
+}
  6. First observedv1.0.0

TDQS

A4.2/5.0
Behavior4/5

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

Annotations already declare readOnlyHint and openWorldHint, so safety is covered; the description adds value with pagination behavior and the fact that results are filterable via `query`. It doesn't note result-size defaults or performance implications of the page vs max_items modes, which would have made it richer.

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

Conciseness3/5

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

Front-loaded and short, but the final sentence ("For a single item by ID, use `getRevision` instead") restates the earlier "for one known revision number use `getRevision`" — the same routing advice is delivered twice, wasting a quarter of the text.

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?

For an 8-parameter read-only list tool with an output schema and full schema descriptions, the description covers purpose, scope, routing, and pagination/filtering entry points. The main remaining omission is guidance on when to use `max_items` collection versus single-page fetching, which matters given the tool's two retrieval modes.

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 coverage is 100%, so every parameter already carries its own documentation and the description can only add marginal semantics. It calls out `query` filtering and pagination as the levers, but says nothing about `sort`, `fields`, `include`, or `response_format` that isn't already in the schema. 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?

States a specific verb and resource ("Returns repository revisions (commits)") plus the returned content (author, timestamp, commit message), and explicitly contrasts with the sibling `getRevision` for single-item lookup. An agent can select between the two without opening either schema.

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?

Gives the audit-recent-changes use case and an explicit exclusion rule: for one known revision number use `getRevision`. Also states cardinality (full collection or batch), which is exactly the decision factor between it and the single-item tool.

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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