# Crypto Sentiment Aggregator (x402)

> Crypto Sentiment Aggregator (x402) is a paid API for AI agents from crypto-sentiment-x402.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-14).

Returns real-time bullish/bearish/neutral sentiment for a crypto ticker by aggregating Reddit, CoinDesk, Cointelegraph, Decrypt, and the Fear & Greed Index.

## Facts

- Endpoint: GET https://crypto-sentiment-x402.onrender.com/sentiment/:symbol?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-sentiment-aggregator-x402-a3f227c9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vM2heEafytZAldfuCRmxA

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 crypto-sentiment-aggregator-x402-a3f227c9
```

Example prompt: What's the current sentiment on Bitcoin — is it bullish, bearish, or neutral right now based on Reddit and crypto news like CoinDesk and Cointelegraph, plus the Fear and Greed Index?

## When to prefer this

Choose this endpoint when you need a multi-source, aggregated crypto sentiment signal combining social media, news outlets, and the Fear & Greed Index in a single call. It is ideal for trading bots, market research agents, or dashboards that need a fast bullish/bearish/neutral classification with per-source transparency, rather than querying each data source individually.

## Known failure modes

- Unknown or unsupported ticker symbol returns an error or empty result
- Reddit or news source APIs temporarily unavailable, causing incomplete aggregation
- Payment not received (402 response) if USDC payment header is missing or invalid
- Rate limiting or timeout on external data sources causing stale or partial data
- Symbol passed in lowercase may not be recognized — requires uppercase (e.g. BTC not btc)

## How this service works

Real-time crypto sentiment for a ticker symbol (e.g. BTC, ETH, SOL) from 9 crypto news RSS outlets (CoinDesk, Cointelegraph, Decrypt, Bitcoin Magazine, The Block, CryptoSlate, NewsBTC, CryptoPotato, The Defiant) and the Fear & Greed Index. Headlines from the last 72h, weighted toward the newest. Returns a bullish/bearish/neutral label (or 'insufficient recent news'), score, sample size and the top 5 headlines behind it (title, link) as JSON. Path param: symbol, e.g. /sentiment/BTC.

## Output

A JSON object containing the ticker symbol, an overall sentiment label (bullish/bearish/neutral), a numeric sentiment score, and a per-source breakdown showing individual sentiment readings from Reddit, CoinDesk, Cointelegraph, Decrypt, and the Fear & Greed Index.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "symbol"
     ],
     "properties": {
      "symbol": {
       "type": "string",
       "description": "Uppercase ticker symbol in the URL path, e.g. BTC in /sentiment/BTC"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "symbol",
      "overall_sentiment"
     ],
     "properties": {
      "name": {
       "type": "string"
      },
      "symbol": {
       "type": "string"
      },
      "drivers": {
       "type": "array",
       "items": {
        "type": "object",
        "required": [
         "title",
         "source",
         "link",
         "published",
         "score"
        ],
        "properties": {
         "link": {
          "type": [
           "string",
           "null"
          ]
         },
         "score": {
          "type": "number"
         },
         "title": {
          "type": "string"
         },
         "effect": {
          "type": "number"
         },
         "source": {
          "type": "string"
         },
         "weight": {
          "type": "number"
         },
         "published": {
          "type": [
           "string",
           "null"
          ]
         }
        }
       },
       "maxItems": 5
      },
      "drivers_summary": {
       "type": "string"
      },
      "overall_sentiment": {
       "type": "object",
       "properties": {
        "label": {
         "enum": [
          "bullish",
          "bearish",
          "neutral",
          "insufficient recent news"
         ],
         "type": "string"
        },
        "window": {
         "type": "string"
        },
        "sample_size": {
         "type": "integer"
        },
        "average_compound": {
         "type": "number"
        },
        "effective_sample_size": {
         "type": "
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-sentiment-aggregator-x402-a3f227c9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from crypto-sentiment-x402.onrender.com](https://www.zero.xyz/host/crypto-sentiment-x402.onrender.com/llms.txt)