# Strale Sentiment Analysis

> Strale Sentiment Analysis is a paid API for AI agents from api.strale.io, paid per call via x402, $0.054/call, status unknown (last checked 2026-09-14).

Analyzes the sentiment of a given text string, returning a sentiment classification with supporting details and a cryptographic audit record.

## Facts

- Endpoint: GET https://api.strale.io/x402/v2/sentiment-analyze
- Price: $0.054/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/strale-sentiment-analysis-80f93eda
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_j6TqUzUSp0hD6a7okPyd9

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability strale-sentiment-analysis-80f93eda
```

Example prompt: Can you analyze the sentiment of this customer review for me: 'The delivery was lightning fast but the packaging was completely crushed when it arrived'?

## When to prefer this

Choose this endpoint when you need sentiment analysis with a verifiable audit trail and cryptographic chain hashing — particularly useful in regulated environments, agent pipelines requiring accountability, or any workflow where you need to prove what analysis was run on what data. It is part of a broader 250+ capability trust layer, making it a good fit when you're already using Strale for other data enrichment tasks.

## Known failure modes

- Missing required 'text' query parameter returns a validation error
- Empty or whitespace-only text may return indeterminate or low-confidence results
- Extremely long text inputs may be truncated or rejected
- Non-English text may produce lower accuracy results depending on model support
- Network timeouts under high load

## How this service works

The trust layer for AI agents — 250+ independently tested data capabilities across 27 countries. Execute capabilities via REST, MCP, A2A, or x402 micropayments. Every call returns an audit record with cryptographic chain hashing.

## Output

Returns a sentiment classification (e.g. positive, negative, neutral) along with confidence scores and a structured audit record that includes a cryptographic chain hash for traceability and trust verification.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "text"
     ],
     "properties": {
      "text": {
       "type": "string",
       "description": "Text to analyze"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/strale-sentiment-analysis-80f93eda/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)