Opsphere — DevOps & SRE Intelligence

GitLab branches

gl_branches_list

Read-only

List repository branches.

Input Schema

Name	Required	Description
`limit`	No
`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_branches_list",
+  "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

C2.4/5.0

Behavior2/5

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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds nothing beyond that: no pagination behavior, no default of 50 / maximum of 100 on limit, and no note on what happens when project is not found.

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?

The single sentence is front-loaded and free of padding, so there is no structural waste. But its brevity comes at the cost of under-specification rather than genuine efficiency.

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

Completeness2/5

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

An output schema exists, so return values need not be explained. Still, for a four-parameter tool with two undocumented parameters, no provider disambiguation and no pagination guidance, the description is too thin to let an agent invoke it confidently alongside a dozen similar branch-listing tools.

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

Parameters2/5

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

Schema coverage is only 50%: project and context_id are documented in the schema, but limit and namespace are not. The description compensates for none of this, offering no explanation of namespace scoping or the meaning of the limit cap, so an agent gains nothing about parameters from it.

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

Purpose3/5

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

The description states a concrete verb and resource ("List repository branches"), so the basic action is clear. However, it gives no hint that this is the GitLab variant, leaving the agent to infer that from the name prefix and title when siblings like bb_branches_list, ghe_branches_list and sq_branches_list do nearly the same thing for other providers.

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

Usage Guidelines2/5

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

There is no guidance on when to reach for this tool versus the Bitbucket, GitHub Enterprise or SonarQube branch-listing siblings, and no stated prerequisites such as a required project reference. Usage must be inferred entirely from the name.

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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