{
  "generated_from": "https://x402.press/catalog.json",
  "generator": "scripts/generate_service_pages.py",
  "page": "https://x402.press/services/stem/",
  "llms": "https://x402.press/services/stem/llms.txt",
  "name": "stem",
  "display_name": "STEM",
  "host": "https://stem.x402.press",
  "state": "pending-review",
  "state_note": "Pending review as of 2026-10-30: retired from the fleet on 2026-10-28 and its vhost removed, so GET /health cannot complete a TLS handshake (tls_no_certificate, probed 2026-10-30T23:10Z). Nothing is for sale until a review brings it back.",
  "description": "Multi-domain computation service. Ask questions spanning chemistry (molecular properties, structure rendering), physics (constants, unit conversion), and math (symbolic integration, differentiation, equation solving, matrix operations, limits, series).",
  "archetype": "tool-orchestration",
  "maturity": "stable",
  "tags": [
    "stem",
    "science",
    "chemistry",
    "physics",
    "math",
    "computation",
    "x402"
  ],
  "paid_operations": [
    {
      "name": "stem_ask",
      "method": "POST",
      "path": "/stem/ask",
      "kind": "inference",
      "latency_class": "medium",
      "description": "Ask a multi-domain STEM question combining chemistry, physics, and math computation. Returns a computed answer with the deterministic tools used."
    }
  ],
  "free_endpoints": [
    {
      "method": "GET",
      "path": "/stem/tools",
      "description": "List all deterministic computation tools with JSON schemas"
    },
    {
      "method": "GET",
      "path": "/stem/diag",
      "description": "Service diagnostic / tool health check"
    },
    {
      "method": "GET",
      "path": "/stem/feedback",
      "description": "Return the 50 most recent feedback entries"
    },
    {
      "method": "POST",
      "path": "/stem/feedback",
      "description": "Submit feedback (response_id, rating 1-5, optional comment)"
    }
  ],
  "docs": {
    "llms": "https://stem.x402.press/llms.txt",
    "manifest": "https://stem.x402.press/.well-known/x402.json",
    "tools": "https://stem.x402.press/tools",
    "openapi": "https://stem.x402.press/openapi.json",
    "about": "https://stem.x402.press/about"
  },
  "hub_catalog": "https://x402.press/catalog.json"
}