# x402 Trading Hub - Polygon Gas Price > x402 Trading Hub - Polygon Gas Price is a paid API for AI agents from trading-hub-v4-omega.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-11-03). Returns current gas price data for the Polygon network ## Facts - Endpoint: POST https://trading-hub-v4-omega.vercel.app/api/gas/polygon?utm_source=zero.xyz - Price: $0.05/call - Payment: x402 - Status: unknown - Last checked: 2026-11-03 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/x402-trading-hub-polygon-gas-price-9fc7b05d - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ai7N3oM7PI5-BQfBC07LF 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 x402-trading-hub-polygon-gas-price-9fc7b05d -d '' ``` Example prompt: What are the current gas prices on Polygon right now — give me the fast, standard, and slow fee tiers in gwei so I can decide how to submit my transaction. ## When to prefer this Use this endpoint when you need live Polygon gas price data to optimize transaction fees for DeFi, NFT, or smart contract interactions on the Polygon network. Prefer this over manual RPC calls when you want a managed, paid-access oracle that aggregates gas tier recommendations. ## Known failure modes - Network congestion may cause stale or delayed gas data - Polygon RPC endpoint downtime returns 5xx error - Invalid request body returns 400 error - Payment not included or insufficient USDC returns 402 Payment Required - Rate limiting if called too frequently ## How this service works 67 paid endpoints for on-chain, forex, stocks & market intelligence ## Output Returns current Polygon network gas price data, typically including fee tiers (fast, standard, slow) expressed in gwei or wei, allowing callers to estimate transaction costs before submitting on-chain. ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-trading-hub-polygon-gas-price-9fc7b05d/health.json - [Zero catalog index](https://www.zero.xyz/llms.txt) - [Other services from trading-hub-v4-omega.vercel.app](https://www.zero.xyz/host/trading-hub-v4-omega.vercel.app/llms.txt)