{
  "generated_at": "2026-04-24T15:01:35.625676+00:00",
  "slug": "web-production-f200a-up-railway-app",
  "title": "Zero-Shot Text Classifier",
  "url": "https://web-production-f200a.up.railway.app/",
  "category": "ai",
  "summary": "Classify arbitrary text into user-defined categories using zero-shot learning.",
  "seo": {
    "title": "Zero-Shot Text Classification API | x402 Payment",
    "description": "Classify text into custom categories without training. 2.5 USDC per call on Solana network."
  },
  "use_cases": [
    "Categorize support tickets without labeled training data",
    "Classify content for moderation pipelines",
    "Tag documents with dynamic category schemas"
  ],
  "ideal_buyer": "NLP agents needing flexible classification without model retraining overhead.",
  "example_prompt": "Classify this text: 'The stock market crashed today' into categories: finance, sports, politics",
  "example_request_body": {
    "text": "The stock market crashed today",
    "categories": [
      "finance",
      "sports",
      "politics"
    ]
  },
  "risk_notes": [],
  "pricing_sanity": {
    "flag": "expensive_outlier",
    "ratio": 250,
    "median_category_atomic": 10000
  },
  "pricing_review_required": false,
  "pricing_decimal_suspect": false,
  "trust_tier": "indexed_external",
  "accepts": [
    {
      "scheme": "exact",
      "network": "solana",
      "pay_to": "9GRqrYGF75XRwtkFsL3tvg4iyR84abxn78Sr3s6FcrJ8",
      "asset": "SOL",
      "max_amount_required_atomic": "2500000",
      "max_timeout_seconds": 300,
      "mime_type": "application/json",
      "description": "Classify text into custom categories without training",
      "verified": false,
      "hints": {
        "input": {
          "type": "http",
          "method": "POST",
          "bodyType": "json",
          "bodyFields": {
            "inputs": {
              "type": "any",
              "required": true,
              "description": "Payload forwarded directly to the underlying Hugging Face model."
            },
            "modelId": {
              "type": "string",
              "required": true,
              "description": "Identifier of the model to run. Must match an enabled model_id."
            },
            "parameters": {
              "type": "object",
              "required": false,
              "description": "Optional inference parameters (temperature, max_new_tokens, etc)."
            }
          },
          "headerFields": {
            "x-nonce": {
              "type": "string",
              "required": true,
              "description": "Client-provided nonce included in the auth challenge to ensure uniqueness."
            },
            "x-payment": {
              "type": "string",
              "required": false,
              "description": "JSON encoded facilitator settlement proof. Required for paid invocations."
            },
            "x-timestamp": {
              "type": "string",
              "required": true,
              "description": "Unix timestamp (seconds) used in the auth challenge to prevent replay."
            },
            "x-agent-wallet": {
              "type": "string",
              "required": true,
              "description": "Base58-encoded Solana public key used for agent authentication."
            },
            "x-payment-signature": {
              "type": "string",
              "required": true,
              "description": "Signature over the x402 auth challenge proving wallet ownership."
            }
          }
        },
        "output": {
          "usage": {
            "costSol": {
              "type": "number",
              "description": "Total SOL charged for the request."
            },
            "durationMs": {
              "type": "number",
              "description": "Processing latency in milliseconds."
            },
            "tokensUsed": {
              "type": "number",
              "description": "Tokens consumed by the upstream provider."
            },
            "costLamports": {
              "type": "number",
              "description": "Total lamports charged for the request."
            }
          },
          "output": {
            "description": "Model-specific output (text, JSON, etc.) returned from Hugging Face."
          },
          "payment": {
            "verified": {
              "type": "boolean",
              "description": "Indicates that the facilitator confirmed settlement."
            },
            "signature": {
              "type": "string",
              "description": "Settled Solana transaction signature."
            },
            "explorerUrl": {
              "type": "string",
              "description": "Link to view settlement on Solana Explorer."
            },
            "x402scanUrl": {
              "type": "string",
              "description": "Link to view settlement on x402scan."
            }
          }
        }
      }
    }
  ],
  "origin": {
    "slug": "web-production-f200a-up-railway-app",
    "host": "web-production-f200a.up.railway.app",
    "title": "Railway-hosted application",
    "description": "An application hosted on Railway's platform. The origin currently returns a 404 error indicating the application is not found or not deployed.",
    "url": "https://web-production-f200a.up.railway.app"
  },
  "json_ld": {
    "@id": "https://x402all.com/resource/web-production-f200a-up-railway-app",
    "url": "https://x402all.com/resource/web-production-f200a-up-railway-app",
    "name": "Zero-Shot Text Classifier",
    "@type": "WebAPI",
    "offers": {
      "url": "https://x402all.com/resource/web-production-f200a-up-railway-app",
      "@type": "Offer",
      "price": "2.5",
      "availability": "https://schema.org/InStock",
      "priceCurrency": "USDC",
      "priceSpecification": {
        "@type": "UnitPriceSpecification",
        "price": "2.500000",
        "unitText": "call",
        "priceCurrency": "USDC"
      },
      "eligibleCustomerType": "Agent",
      "additionalProperty": [
        {
          "@type": "PropertyValue",
          "name": "paymentNetwork",
          "value": "solana"
        },
        {
          "@type": "PropertyValue",
          "name": "paymentAsset",
          "value": "SOL"
        }
      ]
    },
    "sameAs": "https://web-production-f200a.up.railway.app/",
    "@context": "https://schema.org",
    "provider": {
      "@id": "https://x402all.com/server/web-production-f200a-up-railway-app",
      "url": "https://web-production-f200a.up.railway.app",
      "name": "Railway-hosted application",
      "@type": "Organization"
    },
    "identifier": "web-production-f200a-up-railway-app",
    "description": "Classify text into custom categories without training. 2.5 USDC per call on Solana network.",
    "potentialAction": {
      "@type": "BuyAction",
      "target": "https://axon402.com/test-buy?resource=web-production-f200a-up-railway-app",
      "description": "Test-buy this endpoint on AXON"
    },
    "applicationCategory": "ai"
  },
  "axon_deep_link": "https://axon402.com/test-buy?resource=web-production-f200a-up-railway-app"
}