Batch resource probes in register-origin to avoid transaction timeouts

[shafu0x]

Summary

• The register-origin endpoint fires all resource probes concurrently via a single Promise.allSettled. For origins with many resources (e.g. stablecrypto.dev with 105 endpoints), this opens 105+ concurrent DB transactions that saturate the connection pool. Under repeated load, transactions time out waiting for connections — Unable to start a transaction in the given time.
• Replaced the single Promise.allSettled with a batched for-loop processing 10 resources at a time. Extracted the probe logic into a standalone probeAndRegister function for cleaner typing and readability.

Testing

Tested against production (old code) — 5 sequential runs on stablecrypto.dev:

• Run 1: 105/105
• Run 2: 105/105
• Run 3: 21/105 (84 failed — transaction timeouts)
• Run 4: 105/105
• Run 5: 25/105 (80 failed — transaction timeouts)

Tested against preview branch (batched code) — 10 sequential runs on stablecrypto.dev:

• All 10 runs: 105/105, 0 failures

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Project	Deployment	Actions	Updated (UTC)
x402scan	Ready	Preview, Comment	Mar 4, 2026 7:58pm