# DeepBlue Composite Crypto Sentiment API

> DeepBlue Composite Crypto Sentiment API is a paid API for AI agents from api.deepbluebase.xyz, paid per call via x402, $0.01/call, status down (last checked 2026-09-16).

Returns multi-source aggregated crypto sentiment scores including Fear & Greed index, RSI, momentum scores, funding rates, and regime detection for BTC, ETH, SOL, and XRP

## Facts

- Endpoint: GET https://api.deepbluebase.xyz/sentiment/composite
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-deepbluebase-xyz-451afdc6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8KNZTAKJBPxGioM4D_fYJ

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 api-deepbluebase-xyz-451afdc6
```

Example prompt: What's the current composite sentiment picture for BTC, ETH, SOL, and XRP — give me the Fear & Greed reading, momentum scores, market regime (trending vs neutral), and overall directional label so I know if the market is bullish, bearish, or neutral right now.

## When to prefer this

Use this endpoint when you need a comprehensive, multi-signal crypto sentiment snapshot across the four major coins (BTC, ETH, SOL, XRP) in a single call. Prefer over single-metric endpoints when you need regime detection, RSI, momentum, and Fear & Greed combined. Best for trading agents, market briefing bots, or portfolio monitoring workflows that need a holistic market mood assessment at low cost ($0.01/call).

## Known failure modes

- Payment not provided or invalid — 402 Payment Required response
- Upstream data source unavailable — may return partial or stale data
- Rate limiting if payment flow is interrupted
- Empty or malformed response if aggregation pipeline fails

## How this service works

Multi-source aggregated crypto sentiment — Fear & Greed index, momentum scores, funding rates

## Output

Returns a JSON object with per-coin data (BTC, ETH, SOL, XRP) each containing RSI, regime classification, directional label (UP/DOWN), confidence score, bullish/bearish/neutral indicator counts, momentum score, and composite score. Also includes an overall market summary with aggregate fear_greed index, composite score, and label. Source attributed to DeepBlue Multi-Source Sentiment Composite.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "label": {
       "type": "string"
      },
      "momentum": {
       "type": "number"
      },
      "fear_greed": {
       "type": "number"
      },
      "funding_rate_btc": {
       "type": "number"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-deepbluebase-xyz-451afdc6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.deepbluebase.xyz](https://www.zero.xyz/host/api.deepbluebase.xyz/llms.txt)