Agent Memory: save state between runs ($0.002/call)

Your agent forgets everything when it exits. Checkpoint here and resume next run: POST {key, value, ttl?} stores JSON private to your paying wallet; GET ?key= restores it later. Resume long jobs where they stopped, skip work already done, remember what you told the user yesterday. Value up to 8KB, ttl up to 30d — durable memory as one call, no database.

Paid endpoint: $0.002 per call via the x402 protocol (USDC on Base). An unpaid request returns 402 with payment requirements in the PAYMENT-REQUIRED response header; attach payment and retry.