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Delx Commerce — Multilingual Text Ranking API
x402
Delx Commerce — Multilingual Text Ranking API is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).
Ranks a list of candidate texts against a multilingual query using semantic similarity scoring, returning candidates ordered by relevance score.
Price / call$0.003
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
A JSON object containing a ranked array of candidate objects, each with a floating-point similarity score and the original zero-based candidate_index. Also includes the model name (multilingual-e5-large), a SHA256 hash of the result for verifiability, a URL to retrieve the stored ranking, input SHA256, generation ID, candidate count, sale price in USDC, and cost breakdown.
Example use cases
Multilingual FAQ answer selection
“I have a user question in English — 'How do I reset my password?' — and 5 candidate answers pulled from our knowledge base in English, French, and Spanish. Rank them by relevance so I can return the best one.”
Cross-lingual search result reranking
“I ran a search for 'renewable energy policies' and got back 8 snippets in different languages. Rank them by how closely they match the original query so I know which to show first.”
Multilingual intent matching for chatbot
“Given the user message 'je veux annuler ma commande', rank these 6 intent labels — in English and French — by which one the message most likely belongs to.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/rank-multilingual-texts?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need semantic relevance ranking across multiple languages without building or hosting your own embedding model. It is ideal for multilingual RAG pipelines, cross-lingual FAQ retrieval, or reranking search results where candidates may span languages. Prefer it over monolingual rankers when your corpus or users are multilingual. The pay-per-call model ($0.003 USDC, no signup) is optimal for agent workflows with variable or unpredictable load, and the verifiable SHA256 delivery and stored ranking URL make it suitable for auditable pipelines.
Side effects
- Fewer than 2 or more than 16 candidates returns a validation error
- Query or candidate text exceeds character limits (1000 / 2000 chars) causes rejection
- Duplicate candidate texts rejected due to uniqueItems constraint
- Payment failure via x402 if USDC balance is insufficient
- Upstream Replicate model unavailability causes 502/503 errors
- Empty or null query string fails schema validation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| query | string | The multilingual search question or intent to rank against. |
| candidates | array | Unique candidate texts; returned by original zero-based index. |
Output
Schema · Response
{
"type": "json",
"example": {
"model": "beautyyuyanli/multilingual-e5-large",
"ranked": [
{
"score": 0.912314,
"candidate_index": 1
},
{
"score": 0.134221,
"candidate_index": 0
}
],
"sha256": "2d6c7c2b3f3c8e1e7b0d3a5b6e7f8a9b1234567890abcdef1234567890abcdef",
"provider": "replicate",
"media_type": "application/json",
"ranking_url": "https://api.delx.ai/api/v1/generated-rankings/ranking-example.json",
"input_sha256": "34a8815e9c57e321194d50f2ea8b64394019fb8038c9aefd7a9a306a5030fc31",
"generation_id": "ranking-example-generation-id",
"candidate_count": 2,
"sale_price_usdc": 0.003,
"gross_margin_usd": 0.002025,
"upstream_cost_usd": 0.000975
}
}Tags
x402
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