Opsphere — DevOps & SRE Intelligence

GitLab MR changed files

gl_mr_changes

Read-only

Get the complete list of files changed in an MR with line statistics.

Input Schema

Name	Required	Description
`iid`	Yes	Merge request IID
`project`	Yes	Project path, ID, or repo slug under namespace
`namespace`	No
`context_id`	No	Optional explicit Connection Hub work context (ctx_*). Omit to use the conversation's active workspace; global Hub tools ignore it.

Output Schema

Name	Required	Description	Default
`ok`	Yes
`data`	Yes
`contractVersion`	Yes
`dataSchemaVersion`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed21 schema fields changedOct 26, 2026

changedOutput schema / properties / data / additionalProperties
```
Previous value: -trueNew value: +false
```
removedOutput schema / properties / data / properties / count
```
Removed value: -{
-  "type": "number"
-}
```

addedOutput schema / properties / data / properties / family

Added value: +{
+  "const": "gitlab",
+  "type": "string"
+}

addedOutput schema / properties / data / properties / gaps

Added value: +{
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

removedOutput schema / properties / data / properties / issues

Removed value: -{
-  "$ref": "#/properties/data/properties/items"
-}

removedOutput schema / properties / data / properties / items

Removed value: -{
-  "items": {
-    "additionalProperties": true,
-    "properties": {},
-    "type": "object"
-  },
-  "type": "array"
-}

removedOutput schema / properties / data / properties / maxResults
```
Removed value: -{
-  "type": "number"
-}
```
removedOutput schema / properties / data / properties / nextPageToken
```
Removed value: -{
-  "type": [
-    "string",
-    "null"
-  ]
-}
```

addedOutput schema / properties / data / properties / operation

Added value: +{
+  "const": "gl_mr_changes",
+  "type": "string"
+}

addedOutput schema / properties / data / properties / partial
```
Added value: +{
+  "type": "boolean"
+}
```

addedOutput schema / properties / data / properties / records

Added value: +{
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "additions": {
+        "type": "number"
+      },
+      "author": {
+        "type": "string"
+      },
+      "body": {
+        "type": "string"
+      },
+      "conclusion": {
+        "type": "string"
+      },
+      "createdAt": {
+        "type": "string"
+      },
+      "deletions": {
+        "type": "number"
+      },
+      "environment": {
+        "type": "string"
+      },
+      "facts": {
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "name": {
+              "type": "string"
+            },
+            "value": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "number"
+                },
+                {
+                  "type": "boolean"
+                },
+                {
+                  "type": "null"
+                },
+                {
+                  "items": {
+                    "type": [
+                      "string",
+                      "number",
+                      "boolean",
+                      "null"
+                    ]
+                  },
+                  "type": "array"
+                }
+              ]
+            }
+          },
+          "required": [
+            "name",
+            "value"
+          ],
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "id": {
+        "type": "string"
+      },
+      "key": {
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      },
+      "ref": {
+        "type": "string"
+      },
+      "repository": {
+        "type": "string"
+      },
+      "sha": {
+        "type": "string"
+      },
+      "status": {
+        "type": "string"
+      },
+      "summary": {
+        "type": "string"
+      },
+      "tags": {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      },
+      "title": {
+        "type": "string"
+      },
+      "type": {
+        "type": "string"
+      },
+      "updatedAt": {
+        "type": "string"
+      },
+      "url": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "facts"
+    ],
+    "type": "object"
+  },
+  "type": "array"
+}

removedOutput schema / properties / data / properties / results

Removed value: -{
-  "$ref": "#/properties/data/properties/items"
-}

removedOutput schema / properties / data / properties / startAt
```
Removed value: -{
-  "type": "number"
-}
```
addedOutput schema / properties / data / properties / summary
```
Added value: +{
+  "type": "string"
+}
```
addedOutput schema / properties / data / properties / total / minimum
```
Added value: +0
```
changedOutput schema / properties / data / properties / total / type
```
Previous value: -"number"New value: +"integer"
```
addedOutput schema / properties / data / properties / truncated
```
Added value: +{
+  "type": "boolean"
+}
```

addedOutput schema / properties / data / properties / warnings

Added value: +{
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

addedOutput schema / properties / data / required

Added value: +[
+  "family",
+  "operation",
+  "records",
+  "total",
+  "partial",
+  "truncated",
+  "warnings",
+  "gaps"
+]

addedOutput schema / properties / dataSchemaVersion

Added value: +{
+  "const": 2,
+  "type": "number"
+}

changedOutput schema / required

Previous value: -[
-  "contractVersion",
-  "ok",
-  "data"
-]New value: +[
+  "contractVersion",
+  "dataSchemaVersion",
+  "ok",
+  "data"
+]

First observedOct 15, 2026

TDQS

B3.4/5.0

Behavior3/5

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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds only that the list is 'complete' and includes line statistics; it says nothing about pagination, size limits, or behavior on large MRs.

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?

One front-loaded sentence with no filler; every clause (complete list, line statistics) carries information. It is arguably too terse rather than too long.

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

Completeness3/5

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

With annotations and an output schema present, the definition is callable as-is, but for a read tool in a dense sibling set (gl_mr_diff, gl_mr_commits, bb_pr_diffstat) it could have stated the split of responsibilities without much added length.

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 75% with the required iid and project documented, and an output schema exists. The description adds no parameter meaning beyond what the schema provides, which is the expected baseline here.

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

Purpose4/5

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

States a specific verb and resource (list files changed in an MR) plus the returned shape (line statistics), which meaningfully separates it from gl_mr_diff. It doesn't explicitly name the sibling it is not, so it stops short of a 5.

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 only implied: an agent can infer this is for enumerating file-level stats rather than raw patch content, but no when-to-use or when-to-prefer-gl_mr_diff guidance is given.

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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