auxiliar-mcp Server

Chrome에서 확인된 74개 클라우드 서비스의 가격, 위험 플래그 및 설정 가이드. AI 에이전트의 인프라 지식을 최신 상태로 유지합니다.

문서

Auxiliar

Unified MCP capability index so your agent stops picking the wrong tool.

New contributor? See ONBOARDING.md for the fast path into the project — 30-second / 5-minute / 30-minute tours, architecture map, glossary, and links to every proposal + retro.

Your AI coding agent recommends services based on stale training data. It doesn't know SendGrid killed its free tier, that Auth.js is in maintenance mode, that Neon moved to usage-based pricing, or that an auxiliar-nfs-e + Surya parser hits 100% field accuracy on Brazilian invoices. This MCP server fixes that — one find_capability query searches across cloud services, ClawHub skills, MCP servers, plugins, parsers, and public-data lookups.

80+ Capabilities indexed (71 cloud services + skills, MCPs, plugins, parsers, public-data sources). Chrome-verified pricing. Reproducible eval scores on real-world corpora. No signup, no API key.

Install

# Claude Code
claude mcp add auxiliar -- npx auxiliar-mcp

# Cursor (add to .cursor/mcp.json)
{ "auxiliar": { "command": "npx", "args": ["auxiliar-mcp"] } }

# Any MCP client
npx auxiliar-mcp

What agents get wrong today

What your agent says	What's actually true
"Use SendGrid — it has a free tier"	Free tier removed March 2025. 60-day trial only.
"Use Auth.js for your Next.js app"	Maintenance mode. Core team joined Better Auth Sept 2025.
"PlanetScale has a generous free tier"	Free tier removed April 2024.
"Neon Launch is $19/month"	Now usage-based, starting from ~$0.
"Clerk free tier is 10K MAU"	Restructured to 50K MRU (Feb 2026).
"Use Turso with Prisma"	Prisma needs @prisma/adapter-libsql. Use Drizzle instead.

How it works

Twelve tools your agent can call. Four unified Capability tools (preferred for new agents — search across every kind of indexed thing) plus eight legacy single-purpose tools (still wired for backward-compat).

Unified Capability tools (v0.11.0+):

find_capability      → Ranked search across services / skills / MCPs / plugins / parsers / data
                       Filter by jtbd, element_type, agent_context. Pass a query or jtbd tag.
get_capability       → Full record by stable slug — pricing tiers, risks, install spec, deps,
                       eval records, distribution surfaces.
list_capabilities    → Filtered enumeration. element_type / category / jtbd / agent_context.
compare_capabilities → 2–5 ids → aligned row-per-field comparison structure.

Legacy single-purpose tools (still work; will be removed in a future version once consumers cut over):

recommend_service    → Best cloud service for your constraints
get_pricing          → Verified pricing tiers + hidden costs
get_risks            → Gotchas, breaking changes
check_compatibility  → 31 rules for known conflicts (Turso+Prisma, Better Auth+Workers, etc.)
setup_service        → CLI commands, env vars, signup URLs
list_services        → Cloud-service catalog by category
solve_task           → Per-task ranked tool recommendations (PDF OCR, NFS-e extraction, …)
list_solve_tasks     → Available /solve/ task rankings

Example (unified `find_capability`)

Agent: "I need to extract structured fields from Brazilian NFS-e invoices"

→ find_capability(query="Brazilian NFS-e invoice extraction", jtbd=["nfs-e-extraction"])

{
  "total_matches": 3,
  "results": [
    {
      "id": "nfs-e-parser",
      "element_type": "skill",
      "name": "nfs-e-parser",
      "score": 35,
      "page_url": "https://auxiliar.ai/skill/nfs-e-parser/",
      "install_command": "openclaw skills install tlalvarez/nfs-e-parser",
      "eval_score": 10.0,
      "jtbd_tags": ["nfs-e-extraction", "brazilian-invoice-parsing", "bookkeeping", ...]
    },
    {
      "id": "auxiliar-nfs-e",
      "element_type": "parser",
      "score": 30,
      "eval_score": 10.0,
      ...
    },
    ...
  ]
}

Example (legacy `recommend_service`)

Agent: "I need a free database for Cloudflare Workers"

→ recommend_service(need="database", budget="free", constraints="edge, zero cold starts")

{
  "provider": "turso",
  "reason": "Edge-native SQLite with zero cold starts and embedded replicas",
  "pricing": { "free_tier": "5 GB storage, 100 databases" },
  "risks": ["Not PostgreSQL — limited ORM support"],
  "warnings": ["Migration note: SQLite-based — switching to Postgres later requires rewrite"],
  "key_features": ["SQLite/libSQL", "embedded replicas", "zero cold starts"],
  "cli_available": true,
  "cli_install": "brew install tursodatabase/tap/turso",
  "alternatives": [
    { "provider": "cloudflare-d1", "trade_off": "Cloudflare-only, limited tooling" },
    { "provider": "neon", "trade_off": "Has 350ms cold starts on free tier" }
  ]
}

Services covered

Database: Neon, Supabase, Turso, PlanetScale, Render Postgres, AWS RDS, Railway Postgres, Cloudflare D1 Email: Resend, Postmark, SendGrid, AWS SES, Mailgun, Listmonk Auth: Better Auth, Clerk, Auth0, Firebase Auth, Supabase Auth, Auth.js Payments: Stripe, Lemon Squeezy, Paddle, RevenueCat Deploy: Vercel, Railway, Render, Fly.io Search: Algolia, Typesense, Meilisearch, PostgreSQL FTS CMS: Sanity, Contentful, Strapi, Payload, Keystatic, Directus, Ghost Monitoring: Sentry, Datadog, PostHog, Grafana Cloud, BetterStack, Highlight.io Storage: Cloudflare R2, AWS S3, Uploadthing, MinIO Cache: Upstash Redis, Momento, Dragonfly Queues: BullMQ, Inngest, Trigger.dev, AWS SQS, CloudAMQP Vector DB: Pinecone, Weaviate, Qdrant, Chroma LLM APIs: OpenAI, Anthropic, Google AI, Groq, Together AI, Ollama SMS: Twilio, Vonage, MessageBird Feature Flags: LaunchDarkly, Statsig, Flagsmith, Unleash Cron: Inngest, Trigger.dev, QStash, Vercel Cron, Cloudflare Cron

Constraints

Constraint	Example
Framework	`framework: "nextjs"`, `"sveltekit"`, `"fastapi"`, `"express"`
Budget	`budget: "free"`, `"cheap"`, `"enterprise"`
Region	`region: "eu"`
GDPR	`constraints: "GDPR"`
Edge	`constraints: "edge, zero cold starts"`
Lock-in	`constraints: "no vendor lock-in"`
Open source	`constraints: "open source"`
Features	`constraints: "branching, webhooks, inbound email"`

Category aliases work too: "llm-api", "file-storage", "vector-db", "background-jobs", etc. (47 aliases total).

Data quality

Every cloud-service pricing page verified by actually browsing it in Chrome (not scraping or WebFetch — many are JS-rendered)
Every Capability record validated against a Pydantic schema (Python) and a Zod schema (TypeScript) on every build — drift fails fast, never silently
1061 MCP TypeScript test assertions + 482 Python test assertions
/solve/ task rankings backed by reproducible eval harnesses on real-world corpora — see /solve/pdf-text-extraction-mcp/ and /solve/nfs-e-extraction/ on auxiliar.ai
Tested with 50+ agent runs across 8 iterations, scoring 9/10 on recommendation accuracy
Each Capability has a last_verified date. Re-verified monthly.

Privacy

The server sends anonymous usage pings (service names and query parameters, no project code or file paths) to help prioritize which services to verify next. Disable with:

AUXILIAR_TELEMETRY=off

Data is bundled in the npm package. No network calls needed for recommendations.

License

MIT