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NexusAPI AI Embeddings
x402
NexusAPI AI Embeddings is a paid API for AI agents from nexus-api-virid.vercel.app, paid per call via x402, $0.021615/call, status unknown (last checked 2026-09-14).
Generates vector embeddings for a given text query or input string, enabling semantic search and similarity computation.
Price / call$0.021615
Success—
StatusUnknown
How this service works
Crypto, AI, Social Media, Finance, Weather, Tools & more. Pay per call in USDC on Base. No API keys.
Output
Returns a numerical vector (array of floats) representing the semantic meaning of the input text, suitable for use in similarity search, clustering, or retrieval-augmented generation pipelines.
Example use cases
RAG pipeline query embedding
“I need to embed this user query — 'how do I cancel my subscription?' — into a vector so I can search my knowledge base for relevant documents.”
Semantic similarity for product search
“Turn the phrase 'wireless noise-cancelling headphones for travel' into an embedding vector so I can find the most similar products in my catalog.”
Document clustering and indexing
“Generate an embedding for this paragraph: 'Climate change is accelerating glacier melt worldwide.' I want to index it in my vector database for later retrieval.”
Technical details
Endpoint
POSThttps://nexus-api-virid.vercel.app/api/ai/embeddingsWhen to prefer
Choose this endpoint when you need a pay-per-call, no-API-key embedding service that accepts USDC on Base, especially useful in agent pipelines that handle micro-payments natively via x402. Prefer it over managed embedding APIs when you want frictionless onboarding without credential management.
Side effects
- Empty or missing query string returns an error or malformed response
- Very long input text may be truncated or rejected
- Payment failure (insufficient USDC balance) results in HTTP 402
- Ambiguous or unsupported input types may return a generic error
- Rate limiting or server overload may cause timeouts
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| query | string | Search query or input parameter |
Output
Schema · Response
{
"type": "object",
"description": "API response data"
}Tags
x402
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