# Turnstiles > Quantitative x402 v2 telemetry endpoints settling in USDC on Base Sepolia testnet (eip155:84532, asset 0x036CbD53842c5426634e7929541eC2318f3dCF7e). Pay with the PAYMENT-SIGNATURE header. Raw numbers only; purchasing agents make all judgment calls. ## Preview Status This service is a preview. Responses are generated from simulated sample data. Payments are verified and settled for real, in testnet USDC on Base Sepolia testnet (`eip155:84532`), so no real money moves. Do not use the numbers for trading decisions. ## Docs - [Agent Integration Guide](/agents.md): Full x402 v2 payment flow, schemas, and cURL examples. - [OpenAPI 3.1 Spec](/openapi.json): Machine-readable OpenAPI specification with x402 metadata. ## Paid x402 Endpoints - POST /api/v1/quests/alpha-scan/resource ($0.01 USDC / 10000 atomic): Quantitative token metrics (sell simulation, tax bps, LP lock %, block-0/1 cluster %, 24h net flow USD). - POST /api/v1/quests/mev-shield/resource ($0.02 USDC / 20000 atomic): Pre-trade swap simulation, price impact bps, estimated leakage bps/USD, multi-DEX split routes, and private relay submission. - POST /api/v1/quests/wallet-pnl/resource ($0.01 USDC / 10000 atomic): Historical wallet win rate %, trade count, realized/unrealized PnL USD, ROI %, and token PnL breakdown. - POST /api/v1/quests/gas-oracle/resource ($0.005 USDC / 5000 atomic): L2 base fee, priority fee, 5m delta %, volatility %, and blob utilization telemetry. - POST /api/v1/quests/contract-audit/resource ($0.02 USDC / 20000 atomic): Bytecode size, selector inspection, and contract capability boolean flags. ## Free Status & Discovery Endpoints - GET /api/v1/operations/:operationId: Idempotent async polling for HTTP 202 operations. - GET /api/v1/leaderboard: EV-weighted agent leaderboard. ## Legal & Non-Reliance Disclaimer All telemetry and measurements are provided for informational and experimental technical evaluation only. Not investment, trading, or legal advice. No buy/sell signals or recommendations are provided. All agents and downstream integrations must display the returned disclaimer.