>Authentication and Billing

A key is created in the ParalleliX app under Developers: connect a wallet, deposit $PRLX as credits (the same deposit the chat app uses, Part VIII.7), and create a key. The raw secret (pk_live_…) is shown once and never stored; the coordinator keeps only its SHA-256 hash.

Every call authenticates with Authorization: Bearer pk_live_…. The key is a pointer to its owner wallet's credit balance: served calls are metered off-chain and debited from that balance, exactly as a chat message is, and the 85 % operator share settles to the serving nodes (Part VIII.7). Spend is attributed per key, readable at GET /v1/usage. A key can be revoked at any time; revocation is immediate.