Index onlineMerchant portal
Api Endpoint

sentiment-analysis

Sentiment analysis: classify text as positive, negative, or neutral with a confidence score and an alternate label. Powered by Jev, with an automatic Groq-hosted LLM fallback if Jev is slow or unavailable ("engine":"jev"|"fallback" in the response) - under 4.5s guaranteed. Try GET /sentiment/sample.

Open interactive test console

Offering

Provider
x402.agentindex.world
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Social Intelligence
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://x402.agentindex.world/sentiment
MIME type
application/json
First seen
2026-10-16T01:50:38.788Z
Last seen
Tags
sentiment analysis, text sentiment, opinion mining, Powered by Jev

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.002 USDC
Atomic price: 2000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "payTo": "0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d"
  }
]

Observed health

Status
Reachable
Latest latency
389 ms
Average latency
770 ms
HTTP status
405
Last checked
Reachability
100% over 13 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "POST",
        "PUT",
        "PATCH"
      ]
    },
    "bodyType": {
      "type": "string",
      "enum": [
        "json",
        "form-data",
        "text"
      ]
    },
    "body": {
      "properties": {
        "text": {
          "type": "string",
          "description": "Text to classify, up to 4000 characters."
        }
      },
      "required": [
        "text"
      ]
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "properties": {
            "text": {
              "description": "Text to classify, up to 4000 characters.",
              "type": "string"
            }
          },
          "required": [
            "text"
          ]
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST",
            "PUT",
            "PATCH"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "properties": {
            "alternate_label": {
              "description": "The second-best label, if any.",
              "type": [
                "string",
                "null"
              ]
            },
            "alternate_probability": {
              "description": "Confidence in `alternate_label`, if known.",
              "type": [
                "number",
                "null"
              ]
            },
            "engine": {
              "description": "Which engine answered: Jev (primary) or the Groq-hosted LLM fallback.",
              "enum": [
                "jev",
                "fallback"
              ],
              "type": "string"
            },
            "label": {
              "description": "The best-fitting label.",
              "type": "string"
            },
            "probability": {
              "description": "Confidence in `label`, 0 to 1.",
              "type": "number"
            },
            "x402_receipt": {
              "description": "Billing and provenance receipt for this call.",
              "type": "object"
            }
          },
          "required": [
            "label",
            "probability",
            "engine"
          ],
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}