advanced-circleci-mcp-server

advanced-circleci-mcp-server

A CircleCI MCP server specialized in config review, providing tools for fetching actual configs, validating changes, and analyzing workflow bottlenecks, health, and DAG dependencies.

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advanced-circleci MCP Server

CircleCI config review に特化した MCP サーバー。 既存の circleci-mcp-server が持たない Insights(性能・クレジット)実 config 取得 を中心に、config review に必要な5次元のデータを束ねたツールを提供する。

ツール一覧

ツール 問い 内部 API
get_config 何をレビューするか(実 config の取得) GET /pipeline/{id}/config
validate_config 変更案は妥当か(compile & validate) POST /compile-config-with-defaults
get_bottlenecks どこが遅い・高い(job 別 p95・クレジット集中) Insights: workflows + jobs
get_workflow_health workflow の健全性(duration/flaky/test metrics) Insights: summary + test-metrics + flaky-tests
get_dag 依存関係と実 resource_class(DAG 分析) Pipeline/Workflow/Job + job detail

get_config

最新 pipeline の config(source YAML と orb 展開後の compiled YAML)を取得。

{ "project_slug": "gh/org/repo" }
{ "pipeline_id": "uuid", "branch": "main" }

validate_config

任意の YAML を CircleCI に送って検証・展開。変更案を提案する前に必ず通す。

{ "config_yaml": "version: 2.1\n...", "owner_id": "org-uuid" }

get_bottlenecks

全 workflow × 全 job の Insights を取得し、クレジット消費順にソートして返す。

{ "project_slug": "gh/org/repo", "reporting_window": "last-30-days" }
{ "project_slug": "gh/org/repo", "reporting_window": "last-7-days", "all_branches": true }

get_workflow_health

workflow サマリ+テストメトリクス(slowest/most-failed)+flaky test を束ねて返す。 total_test_runs: 0 の場合は store_test_results 未設定を意味する。

{ "project_slug": "gh/org/repo", "workflow_name": "build-and-test" }

get_dag

pipeline または workflow の job 依存グラフ(requires/dependencies)と実 resource_class を返す。

{ "pipeline_id": "uuid" }
{ "pipeline_id": "uuid", "include_resource_class": false }
{ "workflow_id": "uuid" }

設計方針(既存 MCP との住み分け)

次元 既存 circleci-mcp-server このサーバー
A Config config_helper(validate/推奨) get_config(実 config 取得)・validate_config
B Discovery get_latest_pipeline_status など get_dag(resource_class 取得を補完)
C Insights(性能) なし get_bottlenecksget_workflow_health(主目的)
D テスト健全性 find_flaky_testsget_job_test_results get_workflow_health(集約 test-metrics を補完)
E Usage(コスト) download_usage_api_data + find_underused_resource_classes(完備) 実装しない

セットアップ

必要環境変数

CIRCLE_TOKEN=<Personal Access Token>

ビルド

npm install
npm run build

Claude Desktop / Claude Code への登録

{
  "mcpServers": {
    "advanced-circleci": {
      "command": "/path/to/advanced-circleci/build/index.js",
      "env": { "CIRCLE_TOKEN": "your-token" }
    }
  }
}

デバッグ

npm run inspector

Insights の制約(ツールレスポンスにも注記あり)

  • 集計ウィンドウ: 最大90日。既定はデフォルトブランチのみ(all_branches: true で全ブランチ)。
  • on-hold / tag トリガーの実行は集計対象外。
  • データは日次更新。直近24時間は反映されないことがある。
  • クレジットは概算。正確な課金額は Plan Overview で確認。
  • job 別メトリクスは必ず workflow 名が要る(プロジェクト横断の一括 job エンドポイントは存在しない)。

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