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Strale Text Classifier
x402
Strale Text Classifier 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).
Classifies text into user-defined categories, returning a structured classification result with an auditable cryptographic record.
Price / call$0.054
Success—
StatusUnknown
How this service works
Classify text into categories. Optionally provide custom categories. Returns primary category, confidence scores, topic keywords, and summary.
Output
Returns the assigned category label from the provided list, likely with a confidence score and a cryptographic audit record that chain-hashes the call for traceability and trust verification.
Example use cases
Customer support ticket routing
“Classify this incoming support message into one of these categories — billing, technical, returns, or general — so I can route it automatically: 'My invoice shows a charge I don't recognize from last month.'”
Content moderation label assignment
“Can you classify this user-submitted post as either safe, sensitive, or unsafe? Here's the text: 'This product is absolutely terrible and the company should be shut down.'”
Marketing intent detection
“Take this website visitor message and classify it as one of: ready-to-buy, just-browsing, needs-support, or price-sensitive. The message is: 'I've been comparing your plan with competitors and I'm almost ready to sign up but want to confirm pricing.'”
Technical details
Endpoint
GEThttps://api.strale.io/x402/v2/classify-textWhen to prefer
Choose this endpoint when you need auditable, trustworthy text classification with a cryptographic trail — especially in regulated or compliance-sensitive workflows. Prefer it over generic NLP APIs when you need multi-country support, pay-per-call micropayment pricing via x402, or when the classification must be independently verifiable.
Side effects
- Missing or empty text input returns a validation error
- No categories provided results in an error or fallback behavior
- Ambiguous text with low confidence may return an uncertain or null label
- Network timeout or service unavailability returns a 5xx error
- Malformed categories string may cause parsing failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| textrequired | string | Text to classify |
| categories | array | Optional list of categories to classify into |
Output
Schema · Response
{
"confidence": {
"type": "number"
},
"all_categories": {
"type": "array"
},
"topic_keywords": {
"type": "array"
},
"primary_category": {
"type": "string"
}
}Tags
x402
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