Hive Auction

When a Hive shim hits rate limits, this server runs reverse Dutch auctions for the next available slot. It extends standard 402 payment envelopes with a descent curve (starts at 5x asking, drops 5% every 30 seconds to a 50% floor) and exposes tools to subscribe to live price feeds, claim slots at current price, and pull settlement history. Claims are first-wins with atomic SQLite locking, settle in USDC on Base L2, and require HMAC-signed opens from the hivemorph rate limiter. Useful if you're building agent infrastructure where urgency has a price and you want market-driven slot allocation instead of fixed queues.