BitcoinCharts

```json
{
  "service_type": "crypto_app",
  "base_url": "https://api.bitcoincharts.com",
  "auth_method": "none",
  "auth_config": {},
  "endpoints": [
    {"path": "/v1/markets.json", "method": "GET", "purpose": "list all markets"},
    {"path": "/v1/ticker.json", "method": "GET", "purpose": "current market data for all exchanges"},
    {"path": "/v1/trades.csv", "method": "GET", "purpose": "historical trade data"},
    {"path": "/v1/weighted_prices.json", "method": "GET", "purpose": "weighted average prices"},
    {"path": "/v2/exchanges", "method": "GET", "purpose": "exchange information and stats"}
  ],
  "pricing_model": {"type": "free", "details": {"limitations": "Rate limited public API"}},
  "rate_limits": {"rpm": 60},
  "capabilities": ["market_data", "historical_data", "exchange_info", "price_feeds"],
  "crypto_specifics": {
    "supported_chains": ["bitcoin"],
    "token_count": 1,
    "has_websocket": false,
    "has_orderbook": false,
    "fee_structure": "free_data_service",
    "security_features": ["rate_limiting"],
    "data_coverage": {
      "exchanges_covered": 50,
      "historical_depth": "2010-present",
      "data_types": ["trades", "orderbook_snapshots", "market_stats"],
      "update_frequency": "real-time"
    },
    "specialization": "bitcoin_market_data_aggregation"
  }
}
```

```json
{
  "tests": [
    {
      "name": "test_markets_endpoint",
      "endpoint": "/v1/markets.json",
      "method": "GET",
      "headers": {},
      "payload": {},
      "expected_status": 200,
      "expected_behavior": "Returns array of Bitcoin markets with exchange and symbol info",
      "metrics": ["latency", "accuracy", "status_code"],
      "validation": {
        "field": "root",
        "type": "array",
        "min_length": 1,
        "item_fields": ["symbol", "currency"]
      }
    },
    {
      "name": "test_ticker_endpoint",
      "endpoint": "/v1/ticker.json",
      "method": "GET", 
      "headers": {},
      "payload": {},
      "expected_status": 200,
      "expected_behavior": "Returns current market data for all exchanges",
      "metrics": ["latency", "accuracy", "status_code"],
      "validation": {
        "field": "root",
        "type": "array",
        "min_length": 1,
        "item_fields": ["symbol", "latest_trade", "bid", "ask"]
      }
    },
    {
      "name": "test_weighted_prices",
      "endpoint": "/v1/weighted_prices.json",
      "method": "GET",
      "headers": {},
      "payload": {},
      "expected_status": 200,
      "expected_behavior": "Returns weighted average Bitcoin prices",
      "metrics": ["latency", "accuracy", "status_code"],
      "validation": {
        "field": "root",
        "type": "object",
        "required_fields": ["USD", "EUR"]
      }
    },
    {
      "name": "test_exchanges_endpoint",
      "endpoint": "/v2/exchanges",
      "method": "GET",
      "headers": {},
      "payload": {},
      "expected_status": 200,
      "expected_behavior": "Returns exchange information and statistics",
      "metrics": ["latency", "accuracy", "status_code"],
      "validation": {
        "field": "root",
        "type": "array",
        "min_length": 1,
        "item_fields": ["name", "url"]
      }
    },
    {
      "name": "test_historical_trades",
      "endpoint": "/v1/trades.csv",
      "method": "GET",
      "headers": {},
      "payload": {},
      "expected_status": 200,
      "expected_behavior": "Returns CSV format historical trade data",
      "metrics": ["latency", "accuracy", "status_code"],
      "validation": {
        "content_type": "text/csv",
        "min_length": 100
      }
    },
    {
      "name": "test_invalid_endpoint",
      "endpoint": "/v1/nonexistent",
      "method": "GET",
      "headers": {},
      "payload": {},
      "expected_status": 404,
      "expected_behavior": "Returns 404 for non-existent endpoints",
      "metrics": ["status_code", "error_handling"],
      "validation": {
        "status_code": 404
      }
    }
  ],
  "pricing_probes": [
    {
      "name": "verify_rate_limit_headers",
      "description": "Check if API returns rate limiting headers",
      "endpoint": "/v1/ticker.json",
      "method": "GET",
      "payload": {},
      "check": "response.headers should include rate limit info (X-RateLimit-* or similar)"
    },
    {
      "name": "verify_free_access",
      "description": "Confirm no authentication required for basic endpoints",
      "endpoint": "/v1/markets.json",
      "method": "GET", 
      "payload": {},
      "check": "response.status should be 200 without any API keys or auth headers"
    },
    {
      "name": "test_data_freshness",
      "description": "Verify market data is recent and not stale",
      "endpoint": "/v1/ticker.json",
      "method": "GET",
      "payload": {},
      "check": "response data timestamps should be within last few minutes"
    }
  ],
  "stress_profile": {
    "concurrent_requests": 3,
    "duration_seconds": 60,
    "ramp_up": true,
    "respect_rate_limit": true,
    "target_rpm": 50
  }
}
```

0/6 tests passed

```json
{
  "overall": 5,
  "dimensions": {
    "token_efficiency": 0.0,
    "first_try_success": 0.0,
    "response_parseability": 0.0,
    "error_clarity": 0.0,
    "doc_quality": 3.0,
    "auth_simplicity": 8.0,
    "latency": 0.0,
    "consistency": 0.0
  },
  "pricing_normalized": {
    "maker_fee_bps": null,
    "taker_fee_bps": null,
    "withdrawal_fee_usd": null,
    "free_tier_requests": null
  },
  "issues": [
    "Complete service failure - all endpoints timeout after 30+ seconds",
    "No successful responses received from any endpoint",
    "Market data endpoints completely inaccessible",
    "Service appears to be down or misconfigured",
    "No error responses to help debug connectivity issues",
    "Missing security headers (couldn't be evaluated due to timeouts)"
  ],
  "recommendations": [
    "Investigate server infrastructure and connectivity",
    "Implement proper error responses for failed requests",
    "Add service monitoring and health checks",
    "Reduce response times to under 1 second for market data",
    "Implement proper timeout handling and error messages",
    "Add status page or service availability indicators"
  ]
}
```