# Onvexia NLP Trends — Blockchain Asset Sentiment & Narrative Trends

> Onvexia NLP Trends — Blockchain Asset Sentiment & Narrative Trends is a paid API for AI agents from onvexia.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-19).

Returns NLP-derived sentiment and narrative trend signals for a specified crypto asset, synthesized from hundreds of thousands of analysed blockchain-related documents.

## Facts

- Endpoint: GET https://onvexia.com/v1/nlp/trends/%7Basset%7D
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/onvexia-nlp-trends-blockchain-asset-sentiment-narrative-trends-b8916159
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3CUPft6Ua3ZJ-QoFq7wUd

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability onvexia-nlp-trends-blockchain-asset-sentiment-narrative-trends-b8916159
```

Example prompt: Pull the NLP narrative and sentiment trend data for Bitcoin from Onvexia — I want to see what the document-based analysis is showing right now.

## When to prefer this

Choose this endpoint when you need NLP-derived narrative and sentiment trend signals specifically sourced from a large corpus of blockchain-related documents (500k+ analysed), rather than social media sentiment scrapers or price-only feeds. Particularly useful when historical narrative context back to 2008 and multi-chain coverage matters.

## Known failure modes

- Unknown or unsupported asset ticker returns empty data array
- Asset not covered across the ten supported chains returns no results
- Malformed asset path parameter may return 400 or empty response
- Payment failure (x402) blocks access if USDC micro-payment is not completed
- Rate limiting or quota exhaustion returns 429

## How this service works

Thousands of assets across ten chains, half a million analysed documents, labelled addresses and supply-age history reaching back to 2008 — fused into one reading per asset. REST, SQL, GraphQL and MCP.

## Output

A JSON object with a `data` array containing NLP-derived trend and sentiment signals for the requested asset, synthesized from a large corpus of analysed blockchain documents. Meta field includes a link to the full OpenAPI spec.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": [],
  "meta": {
   "docs": "https://onvexia.com/openapi.json",
   "endpoint": "/v1/nlp/trends/{asset}"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/onvexia-nlp-trends-blockchain-asset-sentiment-narrative-trends-b8916159/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from onvexia.com](https://www.zero.xyz/host/onvexia.com/llms.txt)