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Syntexa AgentShelf Language Detection
x402
Syntexa AgentShelf Language Detection is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-01).
Heuristically detects the natural language of a given text string without using an LLM or external network calls.
Price / call$0.002
Success—
StatusUnknown
How this service works
Call when an agent needs a heuristic language guess for text. No LLM and no network. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/lang-detect first.
Output
Returns a detected language identifier (e.g. ISO 639 language code and/or language name) along with a confidence score, derived purely from heuristic analysis of the input text with no LLM or network involvement.
Example use cases
Multilingual chatbot routing
“I'm getting user messages in various languages and need to detect the language of this one before routing it: 'Hola, ¿puedes ayudarme con mi pedido?' — what language is it?”
Content moderation pipeline language tagging
“Tag this piece of user-submitted content with its language so we know which moderation rules to apply: 'Diese Nachricht enthält unangemessene Inhalte.'”
Localization preprocessing for product descriptions
“Before I send this product description off to be translated, can you detect its language? Here's the text: '제품 설명은 여기에 있습니다.'”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/lang-detect?utm_source=zero.xyzWhen to prefer
Prefer this endpoint when you need fast, offline heuristic language detection with no LLM overhead and no external network dependency. Ideal for high-throughput pipelines where cost per call ($0.002 USDC) is acceptable and latency must be minimal. Use the free sandbox POST /v1/sandbox/lang-detect first for testing. Avoid if you need nuanced language distinction between closely related dialects or code-mixed text.
Side effects
- Text too short or ambiguous to reliably detect language — may return low-confidence result
- Input text is a mix of multiple languages — detection may return dominant language only
- Very similar languages (e.g. Malay vs Indonesian) may be misclassified
- Empty or whitespace-only text rejected with validation error
- Payment failure if USDC balance insufficient — returns 402 Payment Required
- Text exceeds 100,000 character limit — rejected with input validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | Text whose language should be guessed. Heuristic only. No LLM. |
Tags
x402
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