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KubeBeaver mascot KubeBeaver

KubeBeaver is an intelligent Kubernetes troubleshooting assistant. It collects cluster signals (events, describe, logs, status, and optional metrics), then uses an LLM to produce a diagnosis, likely root causes, recommended actions, and suggested kubectl commands.

Product goal

You select a namespace and a target (Pod, Deployment, StatefulSet, DaemonSet, ReplicaSet, Job, CronJob, or Node), click Analyze, and get:

  • A short summary of what is happening
  • Likely root causes with confidence and evidence references
  • A checklist of recommended actions
  • Suggested kubectl commands to validate or fix
  • Raw evidence (sanitized) for transparency, with jq-style JSON syntax highlighting and preserved formatting for easier debugging
  • Usage metrics: tokens consumed and response time displayed in the UI

Key features

  • Automatic data collection: Gathers Pod/Deployment/StatefulSet/DaemonSet/ReplicaSet/Job/CronJob/Node details, events, logs, and status
  • LLM-powered analysis: Uses Groq or OpenAI-compatible APIs to generate intelligent diagnostics
  • Security: Automatic sanitization of secrets, tokens, and sensitive data before sending to LLM
  • Analysis history: SQLite database (default) or MySQL/Postgres stores all analyses for review and comparison
  • Performance metrics: Tracks token usage and response time for each analysis
  • Multi-context support: Works with multiple Kubernetes contexts
  • In-cluster deployment: Can run inside Kubernetes with RBAC for least-privilege access
  • Cluster health scan: On-demand namespace or cluster-wide scan for failure signals (failing pods, replica mismatches, node pressure) with prioritized findings, colored severity (Critical/High/Medium/Low/Info), per-finding timestamps (when the issue occurred), and suggested kubectl commands
  • Evidence formatting: When "Include logs in evidence" is enabled, scan evidence (e.g. pod_logs) is pretty-printed and syntax-highlighted (jq-style) in the UI for easier debugging
  • Compare two analyses: Select two analyses from History and run Compare to get a deterministic diff (pod phase, container restarts, lastState, events, analysis summary) and an LLM-generated engineer-friendly explanation; side-by-side metadata and copy kubectl commands from both runs
  • Incident mode: Group analyses and scans into incidents with a timeline; add notes; export as Markdown or JSON (deterministic, reproducible)
  • Scheduled scans: Create scan schedules (cron) for namespace or cluster; built-in APScheduler runs scans and stores results (no Redis required). Optional notifications: set WEBHOOK_URL and/or SLACK_WEBHOOK_URL to receive a concise message on critical/high findings (counts, top 3 findings, link to scan when BASE_URL is set).
  • Reliability and explainability: For common conditions (CrashLoopBackOff, ImagePullBackOff, Unschedulable, OOMKilled), heuristic scoring produces deterministic root-cause candidates with confidence. The LLM receives these and confirms or refutes with evidence; the response includes heuristics, why (evidence ref → explanation), and uncertain (follow-up). In the UI, Explain reasoning toggle expands heuristic signals, evidence mapping, and uncertain/follow-up questions.

Roadmap

Now (v1.0 - Current)

  • ✅ Single resource analysis (Pod, Deployment, StatefulSet, DaemonSet, ReplicaSet, Job, CronJob, Node)
  • ✅ Evidence collection (events, logs, describe, status)
  • ✅ LLM-powered diagnostics (Groq, OpenAI-compatible)
  • ✅ Evidence sanitization and truncation
  • ✅ Analysis history (SQLite)
  • ✅ Multi-context support
  • ✅ In-cluster deployment with RBAC
  • Cluster health scan (on-demand): Scan a namespace or the whole cluster for failure signals; view findings by severity/category with evidence and suggested commands
  • Colored severity in scan summary and finding list (Critical=red, High=orange, Medium=yellow, Low=blue, Info=gray)
  • Issue timestamps in scan findings (when each finding occurred, from pod/node evidence; falls back to scan time when not available)
  • jq-style JSON highlighting for Raw evidence (Analyze) and Evidence (Scan), with pretty-printing when evidence includes logs
  • MySQL/Postgres + Alembic: Optional external DB with migrations; SQLite remains the default
  • Compare two analyses: Select two from History → Compare; deterministic diff (pod/container/events) + LLM explanation; side-by-side metadata and copy kubectl commands
  • Incidents: Create incidents, add analyses/scans from history, add notes, view timeline, export Markdown/JSON
  • Scheduled scans: CRUD schedules (cron), APScheduler runs scans and stores results; optional webhook/Slack on critical/high
  • Reliability and explainability (Sprint 6): Heuristic scoring for CrashLoopBackOff, ImagePullBackOff, ErrImagePull, Unschedulable, OOMKilled; LLM prompt includes heuristic candidates and outputs why (evidence mapping) and uncertain; Explain reasoning toggle in UI (heuristic signals, evidence mapping, uncertain/follow-up); GET /api/analysis/{id}/explain for explainability slice

Next (v2.0 - Q2 2026)

See [Milestone v2.0.0-alpha], [Milestone v2.0.0-beta], [Milestone v2.0.0-rc] for planned features:

  • Heuristics Engine: Additional deterministic checks (current scan covers CrashLoopBackOff, ImagePullBackOff, replica mismatch, node pressure)
  • Comparison: Compare two analyses side-by-side (what changed and why) — implemented in Sprint 3
  • Incidents: Group analyses/scans into incidents with timeline and export — implemented in Sprint 4
  • Scheduled Scans: Automated health checks via cron schedules (Sprint 5)
  • Webhooks: Optional WEBHOOK_URL and SLACK_WEBHOOK_URL on critical/high findings (Sprint 5)
  • Export: JSON, Markdown, and PDF export for incidents and analyses
  • MySQL/Postgres hardening: Additional migrations and tooling (Alembic and optional MySQL/Postgres are already supported)

Later (v2.1+)

  • Multi-Cluster: Scan and aggregate findings across multiple clusters
  • Custom Heuristics: User-defined rules (YAML/JSON)
  • Advanced Metrics: Cost tracking, performance analytics, Grafana dashboards
  • RBAC: Fine-grained permissions (who can scan what)
  • API Keys: Per-user API keys for programmatic access
  • Trend Analysis: Resource health over time (requires time-series DB)

Contributing: See CONTRIBUTING.md for how to get involved. We welcome contributions to any roadmap item.

Releases and changelog

Releases use standard-version and Conventional Commits so the changelog and GitHub release notes are generated from commits (and PR titles). Use these prefixes so your changes appear in the right section:

Prefix Section in changelog Example
feat: Features feat: add cluster health scan
fix: Bug Fixes fix: lint on JSON in frontend
docs: Documentation docs: update README
refactor: Code Refactoring refactor: simplify scanner
perf: Performance perf: cache namespace list

Works for both Node (frontend) and Python (backend). When you run the release script (e.g. npm run release or npm run release -- patch), it runs standard-version, which bumps the version and updates CHANGELOG.md from these commits. To use only the current version's notes as the release body, run npm run release:notes and pass the output to your release tool. Use npm run version:current --silent (or node scripts/version.js) for the version—it reads from the repo root so it works even if your release script later changes directory (e.g. to backend/). Example: gh release create v$(npm run version:current --silent) --notes-file <(npm run release:notes --silent). Run npm install in the repo root so the devDependency standard-version is available.

Repository layout

  • /backend – FastAPI API (Python): K8s client, collectors, sanitization, LLM integration, analysis history
  • /frontend – React + TypeScript + Vite: single-page UI with form and markdown + evidence result
  • /deploy – Kubernetes manifests in deploy/k8s/. Docker Compose at repo root: compose.yaml.

Quick start (Docker)

Run the project with Docker Compose. No local Python or Node setup required.

Prerequisites

  • Docker and Docker Compose
  • kubectl and a working KUBECONFIG (cluster access)
  • For LLM: Groq API key or an OpenAI-compatible endpoint (e.g. Ollama on the host)

Run

# 1. Create Docker network and volume (required by compose)
docker network create kubebeaver-net 2>/dev/null || true
docker volume create kubebeaver-history 2>/dev/null || true

# 2. Configure environment
cp .env.example .env
# Edit .env: set KUBECONFIG path, LLM_PROVIDER, GROQ_API_KEY (or OPENAI_* for Ollama)

# 3. Start backend, Redis, and frontend
docker compose up --build

All settings come from .env in the repo root (see .env.example). Use LLM_PROVIDER=groq with GROQ_API_KEY, or LLM_PROVIDER=openai_compatible with OPENAI_BASE_URL (e.g. http://host.docker.internal:11434/v1 for Ollama on the host).

Analysis history is stored in the kubebeaver-history volume and persists across restarts.

In the UI (http://localhost:8080): choose context, namespace, target type (Pod, Deployment, StatefulSet, DaemonSet, ReplicaSet, Job, CronJob, or Node), resource name, then Analyze. View the markdown result and expand Raw evidence if needed.

Use the Scan tab to run a cluster health scan: pick scope (namespace or cluster), select a namespace when scoping to one, optionally enable Include logs in evidence, then Scan. Results show a summary with colored severity counts (Critical/High/Medium/Low/Info), a filterable list of findings (each with a timestamp for when the issue occurred), and a detail panel with formatted, syntax-highlighted evidence and suggested kubectl commands when you click a finding.


Running inside the cluster (Kubernetes)

The app can run inside the cluster with a ServiceAccount and RBAC (least privilege). It then uses the in-cluster config and does not need a kubeconfig file.

1. Build and load images (e.g. kind)

docker build -t kubebeaver-backend:latest ./backend
docker build -t kubebeaver-frontend:latest ./frontend
kind load docker-image kubebeaver-backend:latest kubebeaver-frontend:latest

2. Deploy

kubectl apply -f deploy/k8s/namespace.yaml
kubectl apply -f deploy/k8s/rbac.yaml
kubectl apply -f deploy/k8s/backend-config.yaml
kubectl apply -f deploy/k8s/backend-deployment.yaml
kubectl apply -f deploy/k8s/frontend-deployment.yaml
kubectl apply -f deploy/k8s/ingress.yaml

3. Configure LLM and secrets

Edit deploy/k8s/backend-config.yaml (ConfigMap) for OPENAI_BASE_URL, OPENAI_MODEL, etc.
Put API keys in the Secret kubebeaver-secrets (e.g. GROQ_API_KEY, OPENAI_API_KEY):

kubectl create secret generic kubebeaver-secrets -n kubebeaver \
  --from-literal=GROQ_API_KEY=your_key \
  --dry-run=client -o yaml | kubectl apply -f -

4. In-cluster behavior

  • Set IN_CLUSTER=true (or rely on automatic detection when KUBERNETES_SERVICE_HOST is set).
  • The backend uses the ServiceAccount kubebeaver and the ClusterRole kubebeaver-reader.
  • RBAC is documented in deploy/k8s/rbac.yaml: namespaces, pods, events, nodes, deployments, statefulsets, daemonsets, replicasets, jobs, cronjobs, and optional metrics.k8s.io.

Configuration (environment)

Variable Description Default
LLM_PROVIDER groq or openai_compatible openai_compatible
GROQ_API_KEY Groq API key -
GROQ_MODEL Groq model name (e.g. llama-3.3-70b-versatile, llama-3.1-8b-instant) llama-3.3-70b-versatile
OPENAI_BASE_URL Base URL for OpenAI-compatible API (Ollama, Exo, OpenAI, etc.) http://localhost:11434/v1
OPENAI_API_KEY API key (if required by endpoint) -
OPENAI_MODEL Model name llama3.2
REQUEST_TIMEOUT LLM request timeout (seconds) 120
MAX_EVIDENCE_CHARS Max characters of evidence sent to LLM 60000
IN_CLUSTER Set to true when running inside Kubernetes false
KUBECONFIG Path to kubeconfig (local/dev) ~/.kube/config
HISTORY_DB_PATH SQLite path for analysis history (used when DATABASE_URL is not set) data/kubebeaver.db
DATABASE_URL External database URL (optional; MySQL or Postgres). If set, overrides HISTORY_DB_PATH -
REDIS_URL Redis URL for response cache (optional; leave empty to disable cache) -
CACHE_TTL_CONTEXTS Cache TTL for context list (seconds) 60
CACHE_TTL_NAMESPACES Cache TTL for namespace list (seconds) 60
CACHE_TTL_RESOURCES Cache TTL for resource list (seconds) 30
CACHE_TTL_ANALYZE Cache TTL for analysis results (seconds) 300
SCAN_MAX_FINDINGS Max findings per scan (payload bound) 200
SCAN_PENDING_MINUTES Pod Pending longer than this (minutes) is reported 5
MAX_COMPARE_CHARS Max characters sent to LLM for compare (diff + context) 8000
ALEMBIC_DATABASE_URL Database URL for Alembic when running migrations on the host (e.g. mysql+pymysql://...@localhost:33064/...); used instead of DATABASE_URL so host can reach DB -

Database:
By default, KubeBeaver uses SQLite (stored in kubebeaver-history volume). To use MySQL or Postgres, set DATABASE_URL in .env:

  • MySQL: mysql+aiomysql://user:password@host:3306/database
  • Postgres: postgresql+asyncpg://user:password@host:5432/database

MySQL is started by default with docker compose up. To use it, set DATABASE_URL=mysql+aiomysql://kubebeaver:kubebeaver@mysql:3306/kubebeaver in .env.

Running Alembic migrations from the host:
If DATABASE_URL uses the Docker hostname mysql, that hostname does not resolve when you run alembic upgrade head on your machine. Set ALEMBIC_DATABASE_URL to the same URL with localhost and the host-exposed port (e.g. 33064):
ALEMBIC_DATABASE_URL=mysql+pymysql://kubebeaver:kubebeaver@localhost:33064/kubebeaver
Then run: cd backend && uv run alembic upgrade head

Redis cache (optional):
With Docker Compose, Redis is included. Set REDIS_URL=redis://redis:6379/0 in .env to cache API responses (contexts, namespaces, resources, and analysis results). If unset, no cache is used.


API overview

  • GET /api/health – Health and flags: kube_connected, llm_configured
  • GET /api/contexts – List kube contexts (or in-cluster when applicable)
  • GET /api/namespaces – List namespaces (optional ?context=...)
  • GET /api/resources?namespace=...&kind=Pod|Deployment|StatefulSet|DaemonSet|ReplicaSet|Job|CronJob|Node – List resources for the form
  • POST /api/analyze – Body: { "context?", "namespace?", "kind", "name", "include_previous_logs?" }
    Returns: analysis_json, analysis_markdown, evidence, truncation_report, tokens_used, response_time_ms, error?
    • tokens_used: Number of tokens consumed by the LLM call
    • response_time_ms: Response time in milliseconds (displayed as seconds if ≥1000ms)
  • GET /api/history – List recent analyses (saved automatically to SQLite)
  • GET /api/history/{id} – Get one analysis by id with full details (includes analysis_json with heuristics, why, uncertain when available)
  • GET /api/analysis/{id}/explain – Explainability slice for an analysis: { analysis_id, heuristics, why, uncertain } (from stored analysis_json)
  • POST /api/compare – Body: { "analysis_id_a": "<uuid>", "analysis_id_b": "<uuid>" }. Returns: diff_summary (markdown), changes (array of { type, path, before, after, impact }), likely_reasoning (LLM explanation citing diff paths), analysis_a / analysis_b (metadata + kubectl_commands). Uses stored evidence and analysis_json; LLM payload is limited to diff + minimal context.
  • POST /api/scan – Run cluster health scan. Body: { "context?", "scope": "namespace"|"cluster", "namespace?" (required when scope=namespace), "include_logs?" }. Returns: id, created_at, summary_markdown, error?, findings[], counts (by severity), duration_ms?.
  • GET /api/scans – List recent scans (?limit=50).
  • GET /api/scans/{id} – Get scan by id with full findings and summary. Each finding includes occurred_at? (ISO timestamp when the issue happened, from pod/node evidence) when available.
  • POST /api/incidents – Create incident. Body: { "title", "description?", "severity?", "tags?" }. Returns: { "id" }.
  • POST /api/incidents/{id}/add – Add analysis or scan to incident. Body: { "type": "analysis"|"scan", "ref_id": "<analysis_id|scan_id>" }. Returns: { "id" }.
  • GET /api/incidents – List incidents (?limit=50).
  • GET /api/incidents/{id} – Get incident with timeline (items + notes, sorted by created_at).
  • POST /api/incidents/{id}/export – Export incident. Body: { "format": "markdown"|"json" }. Returns: Markdown or JSON body (deterministic).
  • POST /api/incidents/{id}/notes – Add note. Body: { "content": "..." }. Returns: { "id" }.
  • POST /api/schedules – Create schedule. Body: { "context?", "scope", "namespace?", "cron", "enabled?" }. Returns: { "id" }.
  • GET /api/schedules – List schedules (?limit=100).
  • GET /api/schedules/{id} – Get schedule by id.
  • PUT /api/schedules/{id} – Update schedule (partial). Body: { "context?", "scope?", "namespace?", "cron?", "enabled?" }.
  • DELETE /api/schedules/{id} – Delete schedule (204).

How to verify (Explainability)

  1. Run an analysis on a pod that is in a known bad state (e.g. CrashLoopBackOff, ImagePullBackOff) or use a cluster where you can create such a pod. Alternatively run any analysis; heuristics appear when evidence contains waiting/terminated reasons or FailedScheduling events.
  2. UI: After the result, expand Explain reasoning. You should see:
    • Heuristic signals: Condition (e.g. CrashLoopBackOff) with evidence refs and candidate causes with confidence.
    • Evidence mapping: List of ref → short explanation (when the LLM returns why).
    • Uncertain / follow-up questions: Items from uncertain and follow_up_questions.
  3. History: Open an analysis from History; the same Explain reasoning toggle appears when that analysis has heuristics / why / uncertain / follow_up_questions.
  4. API (explain slice): curl -s http://localhost:8000/api/analysis/<analysis_id>/explain | jq. Expect analysis_id, heuristics[], why[], uncertain[].
  5. Tests: cd backend && uv run pytest tests/test_heuristics.py -v. All 8 tests should pass (empty evidence, CrashLoopBackOff, ImagePullBackOff, ErrImagePull, OOMKilled, Unschedulable from events, rules coverage, evidence_refs in candidates).

Security and sanitization

  • Evidence is sanitized before being sent to the LLM: tokens, bearer/auth headers, env vars with names like PASSWORD, SECRET, TOKEN, KEY, and long base64 strings are redacted.
  • Logs and events are truncated (e.g. 300 lines per container, 50 events); total evidence is capped at MAX_EVIDENCE_CHARS.
  • RBAC is least-privilege: only the reads needed for listing and describing resources and fetching logs (see deploy/k8s/rbac.yaml).
  • Do not expose the backend or Ingress publicly without authentication; the API has no built-in auth.

Example request/response

POST /api/analyze

{
  "namespace": "default",
  "kind": "Pod",
  "name": "my-app-7d8f9c-xk2lm",
  "include_previous_logs": true
}

Response (excerpt)

{
  "analysis_json": {
    "summary": "Pod is in CrashLoopBackOff; the main container exits with code 1.",
    "likely_root_causes": [
      { "cause": "Application error or missing config", "confidence": "high", "evidence_refs": ["pod.status.containerStatuses[0].lastState.terminated"] }
    ],
    "recommended_actions": ["Check logs with kubectl logs -p ...", "Verify config map and secrets"],
    "kubectl_commands": ["kubectl logs default/my-app-7d8f9c-xk2lm -p --tail=100"],
    "follow_up_questions": [],
    "risk_notes": []
  },
  "analysis_markdown": "## Summary\n\nPod is in CrashLoopBackOff...",
  "evidence": { ... },
  "truncation_report": { "truncated": false, ... },
  "tokens_used": 1234,
  "response_time_ms": 2345,
  "error": null
}

The UI displays metrics in the result header: "Result - 1,234 tokens - 2.3s" (time shown in seconds if ≥1000ms, otherwise in milliseconds).


How to verify (Scan)

  1. Start the stack: docker compose up --build (or run backend + frontend locally).
  2. Open Scan tab: http://localhost:8080 → click Scan.
  3. Run a scan: Choose scope Namespace, select a namespace, click Scan. Expect a summary (e.g. counts by severity) and a list of findings (or “Total findings: 0” if the namespace is healthy).
  4. List scans: curl -s http://localhost:8000/api/scans | jq (or use the “Recent scans” list in the UI). Expect an array of scan objects with id, created_at, scope, namespace, findings_count, error?.
  5. Get scan detail: curl -s http://localhost:8000/api/scans/<id> | jq (replace <id> with a scan id from step 4). Expect created_at, summary_markdown, findings[] (each with severity, category, title, description, affected_refs, suggested_commands, evidence_snippet?, occurred_at?).
  6. Click a finding in the UI: detail panel shows formatted, syntax-highlighted evidence (if collected) and suggested kubectl commands. When "Include logs in evidence" was used, pod_logs and other JSON evidence are pretty-printed and colored.

How to verify (Compare)

  1. Have at least two analyses in History (run Analyze on the same or different resources at different times).
  2. Open the Analyze tab and scroll to History.
  3. Select two analyses using the checkboxes (first selection = A, second = B).
  4. Click "Compare selected". The compare panel shows side-by-side metadata (Analysis A vs B), Likely reasoning (LLM), Diff summary (markdown), and Copy kubectl commands (from A and from B).
  5. API: curl -s -X POST http://localhost:8000/api/compare -H "Content-Type: application/json" -d '{"analysis_id_a":"<id1>","analysis_id_b":"<id2>"}' | jq. Expect diff_summary, changes[], likely_reasoning, analysis_a, analysis_b.

How to verify (Incidents)

  1. Start the stack and ensure you have at least one analysis or scan in history.
  2. Open Incidents tab: Click Incidents in the header.
  3. Create incident: Enter a title (e.g. "Production pod crash"), optional description and severity, click Create incident. The new incident is selected and the detail panel appears.
  4. Add from history: In "Add from history", choose Analysis or Scan, select an item from the dropdown, click Add. The timeline updates with the new item.
  5. Add note: Type a note (e.g. "Mitigated by scaling") and click Add note. Timeline shows the note.
  6. Export: Click Export Markdown or Export JSON. A file downloads (e.g. incident-<id-prefix>.md or .json). Markdown contains title, description, severity, and a chronological timeline; JSON has the same structure in machine-readable form.
  7. API:
    • Create: curl -s -X POST http://localhost:8000/api/incidents -H "Content-Type: application/json" -d '{"title":"Test"}' | jq{ "id": "..." }.
    • Add item: curl -s -X POST http://localhost:8000/api/incidents/<id>/add -H "Content-Type: application/json" -d '{"type":"analysis","ref_id":"<analysis_id>"}' | jq.
    • List: curl -s http://localhost:8000/api/incidents | jq.
    • Get: curl -s http://localhost:8000/api/incidents/<id> | jqid, title, timeline[], items[], notes[].
    • Export: curl -s -X POST http://localhost:8000/api/incidents/<id>/export -H "Content-Type: application/json" -d '{"format":"markdown"}' → Markdown body.

How to verify (Schedules)

  1. Start the stack (backend + frontend). Scheduler starts with the app; no Redis required.
  2. Open Schedules tab: Click Schedules in the header.
  3. Create schedule: Choose scope (Namespace or Cluster), select namespace if scope is Namespace, enter cron (e.g. 0 * * * * for hourly), leave Enabled checked, click Create schedule. The new schedule appears in the list.
  4. Edit/Delete: Click Edit on a schedule to change cron or enabled; Save or Cancel. Click Delete to remove (with confirmation).
  5. Runs: At the next cron tick, the backend runs the scan and stores the result (visible under the Scan tab → Recent scans). Failures are logged without crashing the app.
  6. Notifications (optional): Set WEBHOOK_URL and/or SLACK_WEBHOOK_URL and BASE_URL in the backend environment. When a scheduled scan has critical or high findings, the backend POSTs a concise message (counts by severity, top 3 findings, link to scan).
  7. API:
    • Create: curl -s -X POST http://localhost:8000/api/schedules -H "Content-Type: application/json" -d '{"scope":"namespace","namespace":"default","cron":"0 * * * *"}' | jq{ "id": "..." }.
    • List: curl -s http://localhost:8000/api/schedules | jq.
    • Get: curl -s http://localhost:8000/api/schedules/<id> | jq.
    • Update: curl -s -X PUT http://localhost:8000/api/schedules/<id> -H "Content-Type: application/json" -d '{"enabled":false}' | jq.
    • Delete: curl -s -o /dev/null -w "%{http_code}" -X DELETE http://localhost:8000/api/schedules/<id> → 204.

License

See LICENSE.

About

Kubernetes troubleshooting assistant that gathers cluster signals (events, logs, describe) and uses an LLM (Groq or OpenAI-compatible) to produce diagnoses, root causes, and suggested kubectl commands. FastAPI backend, React frontend.

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