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CoinStats, Mobula, and CryptoNews DataBus Providers
===================================================
Three free/freemium API providers for enhanced crypto intelligence.
1. CoinStats — Per-wallet DeFi resolution across 10K+ protocols
2. Mobula — Long-tail DEX token pricing (10K free credits/month)
3. CryptoNews — Free unlimited news API (no key needed)
"""
import logging
logger = logging.getLogger("databus.api_providers")
# ═══════════════════════════════════════════════════════════════
# 1. COINSTATS — Per-Wallet DeFi Resolution
# Free tier: public API, no key needed for basic endpoints
# ═══════════════════════════════════════════════════════════════
COINSTATS_BASE = "https://openapiv1.coinstats.app"
async def fetch_coinstats_wallet(address: str, chain: str = "ethereum") -> dict:
"""Resolve a wallet's complete DeFi position — collateral, borrows, LPs, rewards."""
import aiohttp
try:
api_key = __import__("os").environ.get("COINSTATS_API_KEY", "")
headers = {"X-API-KEY": api_key} if api_key else {}
async with aiohttp.ClientSession() as session:
# Wallet balance + DeFi positions
url = f"{COINSTATS_BASE}/wallet/v1/balance/history/{address}"
params = {"chain": chain, "limit": 1}
async with session.get(
url, params=params, headers=headers, timeout=aiohttp.ClientTimeout(total=15)
) as resp:
if resp.status == 200:
data = await resp.json()
return {
"address": address,
"chain": chain,
"balance": data,
"source": "CoinStats (free tier)",
"url": "https://coinstats.app/api-docs",
}
# Fallback: try DeFi-specific endpoint
url2 = f"{COINSTATS_BASE}/defi/v1/positions/{address}"
async with session.get(
url2, headers=headers, timeout=aiohttp.ClientTimeout(total=15)
) as resp:
if resp.status == 200:
return {
"address": address,
"defi_positions": await resp.json(),
"source": "CoinStats DeFi (free tier)",
}
return {
"address": address,
"error": f"CoinStats returned {resp.status}",
"source": "CoinStats",
}
except Exception as e:
logger.warning(f"CoinStats fetch failed: {e}")
return {"error": str(e), "source": "CoinStats"}
# ═══════════════════════════════════════════════════════════════
# 2. MOBULA — Long-tail DEX Token Pricing
# Free tier: 10,000 credits/month, no rate limit
# ═══════════════════════════════════════════════════════════════
MOBULA_BASE = "https://api.mobula.io/api/1"
async def fetch_mobula_market(
asset: str | None = None, blockchain: str | None = None, limit: int = 20
) -> dict:
"""Fetch market data from Mobula — covers long-tail tokens missed by CMC/CG."""
import aiohttp
mobula_key = __import__("os").environ.get("MOBULA_API_KEY", "")
try:
async with aiohttp.ClientSession() as session:
headers = {"Authorization": mobula_key} if mobula_key else {}
# Multi-data market endpoint
url = f"{MOBULA_BASE}/market/multi-data"
params = {"limit": limit}
if asset:
params["assets"] = asset
if blockchain:
params["blockchain"] = blockchain
async with session.get(
url, params=params, headers=headers, timeout=aiohttp.ClientTimeout(total=15)
) as resp:
if resp.status == 200:
data = await resp.json()
tokens = data.get("data", [])
return {
"tokens": tokens[:limit],
"count": len(tokens),
"query": {"asset": asset, "blockchain": blockchain},
"source": "Mobula (free tier — 10K credits/month)",
"url": "https://docs.mobula.io",
"credits_remaining": resp.headers.get("x-credits-remaining", "unknown"),
}
return {"error": f"Mobula returned {resp.status}", "source": "Mobula"}
except Exception as e:
logger.warning(f"Mobula fetch failed: {e}")
return {"error": str(e), "source": "Mobula"}
async def fetch_mobula_wallet(address: str, blockchain: str = "ethereum") -> dict:
"""Fetch wallet portfolio via Mobula — balances, tokens, transaction history."""
import aiohttp
mobula_key = __import__("os").environ.get("MOBULA_API_KEY", "")
try:
async with aiohttp.ClientSession() as session:
headers = {"Authorization": mobula_key} if mobula_key else {}
url = f"{MOBULA_BASE}/wallet/portfolio"
params = {"wallet": address, "blockchain": blockchain}
async with session.get(
url, params=params, headers=headers, timeout=aiohttp.ClientTimeout(total=15)
) as resp:
if resp.status == 200:
data = await resp.json()
return {
"address": address,
"blockchain": blockchain,
"portfolio": data.get("data", data),
"source": "Mobula Wallet (free tier)",
}
return {
"address": address,
"error": f"Mobula wallet returned {resp.status}",
"source": "Mobula",
}
except Exception as e:
logger.warning(f"Mobula wallet fetch failed: {e}")
return {"error": str(e), "source": "Mobula"}
# ═══════════════════════════════════════════════════════════════
# 3. CRYPTONEWS (cryptocurrency.cv) — Free unlimited news API
# No API key, no rate limits, REST + RSS
# ═══════════════════════════════════════════════════════════════
CRYPTONEWS_BASE = "https://cryptocurrency.cv/api"
async def fetch_crypto_news(
category: str | None = None, source: str | None = None, limit: int = 20
) -> dict:
"""Fetch crypto news from cryptocurrency.cv — free, no key, unlimited."""
import aiohttp
try:
async with aiohttp.ClientSession() as session:
# Try REST API
url = f"{CRYPTONEWS_BASE}/v1/news"
params = {"limit": limit}
if category:
params["category"] = category
if source:
params["source"] = source
async with session.get(
url, params=params, timeout=aiohttp.ClientTimeout(total=15)
) as resp:
if resp.status == 200:
data = await resp.json()
articles = data.get("articles", data.get("news", data.get("data", [])))
return {
"articles": articles[:limit] if isinstance(articles, list) else [],
"count": len(articles) if isinstance(articles, list) else 0,
"category": category,
"source": "cryptocurrency.cv (free, no API key)",
"url": "https://github.com/nirholas/cryptocurrency.cv",
"features": "RSS/Atom feeds, JSON REST, MCP server, Python SDK",
}
# Fallback: try RSS feed
url2 = f"{CRYPTONEWS_BASE}/v1/news/rss"
async with session.get(url2, timeout=aiohttp.ClientTimeout(total=10)) as resp:
if resp.status == 200:
return {
"rss": (await resp.text())[:5000],
"source": "cryptocurrency.cv RSS (free)",
}
return {"error": f"CryptoNews returned {resp.status}", "source": "cryptocurrency.cv"}
except Exception as e:
logger.warning(f"CryptoNews fetch failed: {e}")
return {"error": str(e), "source": "cryptocurrency.cv"}
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