# CoinOpSelect Sentiment Aggregate API

> CoinOpSelect Sentiment Aggregate API is a paid API for AI agents from coinop.publicvm.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).

Aggregates sentiment scores across multiple text sources (news, social, etc.) into a unified crypto/market sentiment signal, paid per call via x402 on Base.

## Facts

- Endpoint: POST https://coinop.publicvm.com/api/v1/sentiment/aggregate?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/coinopselect-sentiment-aggregate-api-d3b81e7c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4PLBVzJ-HOPasTXCVsArQ

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 coinopselect-sentiment-aggregate-api-d3b81e7c -d '<json body>'
```

Example prompt: Can you aggregate the sentiment across these three crypto news snippets for me — 'Bitcoin adoption is growing strong', 'Ethereum fees are making DeFi too expensive', and 'Solana network experiencing outages' — and tell me what the combined market mood looks like?

## When to prefer this

Choose this endpoint when you need to combine sentiment signals from multiple heterogeneous text sources (news, social, etc.) into a single aggregate crypto market sentiment score, especially when you want on-chain payment via x402 on Base and are working within a crypto/DeFi agent workflow. Prefer this over single-document sentiment endpoints when you have a batch of inputs and need one unified reading.

## Known failure modes

- Empty or malformed 'sources' array returns an empty result object
- Missing required 'text' or 'type' fields in source items may produce incomplete aggregation
- Payment failure via x402 (insufficient USDC balance) results in 402 response before processing
- Ambiguous or very short text snippets may yield low-confidence or neutral aggregated output
- Rate limits or on-chain congestion may cause timeouts

## How this service works

Paid on-chain token, wallet, contract and research data over x402 on Base.

## Output

Returns a JSON object with a 'query' field set to 'sentiment-aggregate' and a 'result' object containing the aggregated sentiment data computed from the provided sources. The result reflects a combined sentiment signal derived from all input text items and their labeled source types.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "sources": {
   "type": "array",
   "example": [
    {
     "text": "Bitcoin adoption is growing strong",
     "type": "news"
    }
   ]
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "query": "sentiment-aggregate",
  "result": {}
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/coinopselect-sentiment-aggregate-api-d3b81e7c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from coinop.publicvm.com](https://www.zero.xyz/host/coinop.publicvm.com/llms.txt)