SigmaGrid Registry - Funding Rate Signal

Use this endpoint when you need real-time funding rate signals for a specific ticker to inform algorithmic or quantitative trading decisions, particularly in perpetual futures markets. Prefer this over generic market data APIs when you specifically need funding rate quantitative signals and are willing to pay per-call via x402 micropayments.

• Payment not provided or insufficient — 402 Payment Required response
• Invalid or unsupported ticker symbol — 400 or 404 error
• Rate limit exceeded — 429 Too Many Requests
• Service unavailable or data feed outage — 503 error
• Malformed ticker parameter in path — 400 Bad Request