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MolCloud Text Embedding API
x402
MolCloud Text Embedding API is a paid API for AI agents from api.molcloud.net, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-17).
Converts input text into a 768-dimensional vector embedding for semantic similarity, search, and retrieval tasks
Price / call$0.003
Success—
StatusUnknown
How this service works
40 pay-per-request AI, search, headless browser, crypto alpha & memory APIs for autonomous agents settling in USDC on Base via x402 v2.
Output
Returns a JSON object containing a 'data' field with the 768-dimensional float vector array and the dimension count, plus a 'status' field confirming success and the endpoint path. The vector can be directly inserted into any vector store or used for cosine similarity calculations.
Example use cases
RAG pipeline document ingestion
“Embed this chunk of text so I can store it in my Pinecone index for retrieval-augmented generation: 'Quantum computing leverages superposition to perform calculations exponentially faster than classical computers.'”
Semantic similarity search
“Generate a vector embedding for the query 'best running shoes for flat feet' so I can find the most semantically similar product descriptions in my catalog.”
Text clustering for topic modeling
“Convert these customer support messages into vector embeddings so I can cluster them by topic and figure out what issues come up most often.”
Technical details
Endpoint
POSThttps://api.molcloud.net/api/ai/embed?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need pay-per-use text embeddings without a subscription to OpenAI, Cohere, or similar providers, especially in autonomous agent pipelines that settle micropayments in USDC on Base via x402. Ideal for RAG pipelines, semantic search indexing, and similarity scoring where you need 768-dimensional vectors and want crypto-native billing with no API key management.
Side effects
- Empty or missing 'text' field returns an error response
- Extremely long text may exceed token limits and return a truncation or error
- Payment failure via x402 (insufficient USDC balance on Base) results in 402 Payment Required before processing
- Network timeout on edge gateway returns 503 or similar
- Malformed JSON body returns 400 Bad Request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | Input text to convert into a vector embedding |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"vector": [
0.012,
-0.034
],
"dimensions": 768
},
"status": "success",
"endpoint": "/api/ai/embed"
}
}Tags
x402
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