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GitLab commits on branch

gl_commits_list
Read-only

Get commit history of a branch.

Input Schema

NameRequiredDescriptionDefault
limitNo
branchNomain
projectYesProject path, ID, or repo slug under namespace
namespaceNo
context_idNoOptional explicit Connection Hub work context (ctx_*). Omit to use the conversation's active workspace; global Hub tools ignore it.

Output Schema

NameRequiredDescriptionDefault
okYes
dataYes
contractVersionYes
dataSchemaVersionYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed21 schema fields changed
    • 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_commits_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"
      +]
  2. First observed

TDQS

C2.8/5.0
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 the safety profile is covered. The description adds only the branch-scoping fact; it says nothing about default ordering, pagination behavior, or the default limit of 20 / max 100 that governs result completeness.

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?

It is a single short sentence with zero waste, but this is under-specification rather than true conciseness. Nothing is front-loaded beyond the bare purpose.

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?

For a 5-parameter list tool with 40% schema coverage, the description omits result ordering, pagination/limit semantics, and how namespace combines with project. The output schema and annotations relieve some burden on return shape and safety, but the operational gaps remain.

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 description coverage is only 40%: project and context_id are documented, but limit, branch, and namespace have no descriptions anywhere. The phrase 'of a branch' implicitly points at the branch parameter (default 'main'), yet the description adds nothing about limit caps or the namespace/repo-slug relationship.

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?

The description states a clear verb and resource ('Get commit history of a branch'), and the branch scoping differentiates it from MR-centric siblings like gl_mr_commits. It never names a sibling explicitly, so an agent must infer the distinction from naming alone.

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 use this versus gl_mr_commits, gl_branches_list, or gl_tags_list, and no prerequisites or exclusions are stated. The agent is left to infer usage purely from the title and tool 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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