Relay Diagnostic Skill

Diagnoses and recovers stuck sponsored transactions by inspecting the sponsor relay's nonce state and optionally triggering automated recovery.

Use this for operator diagnostics only. Caller-facing x402 payment state should come from canonical payment-status polling by paymentId, not from relay health heuristics.

• check-health — Read-only, no wallet required. Returns relay version, sponsor nonce status, detected gaps, and stuck transactions.
• recover — Requires an unlocked wallet (to source the sponsor API key). Attempts RBF, gap-fill, or both.

Usage

bun run relay-diagnostic/relay-diagnostic.ts <subcommand> [options]

Subcommands

check-health

Check the sponsor relay availability and nonce status. No wallet needed.

bun run relay-diagnostic/relay-diagnostic.ts check-health

Output:

{
  "healthy": true,
  "network": "mainnet",
  "version": "1.2.0",
  "sponsorAddress": "SP1PMPPVCMVW96FSWFV30KJQ4MNBMZ8MRWR3JWQ7",
  "nonceStatus": {
    "lastExecuted": 4210,
    "lastMempool": 4215,
    "possibleNext": 4216,
    "missingNonces": [],
    "mempoolNonces": [4211, 4212, 4213, 4214, 4215],
    "hasGaps": false,
    "gapCount": 0,
    "mempoolDesync": false,
    "desyncGap": 5
  },
  "stuckTransactions": [],
  "issues": [],
  "formatted": "Relay Health Check (mainnet)\nStatus: HEALTHY\n..."
}

recover

Attempt automated recovery of stuck transactions. Requires an unlocked wallet.

bun run relay-diagnostic/relay-diagnostic.ts recover [options]

Options:

• --action <rbf|fill-gaps|both> — Recovery mode (default: both)
• --txids <txid,...> — Comma-separated list of specific stuck txids for RBF (omit to bump all)
• --nonces <n,...> — Comma-separated list of specific missing nonces for gap-fill (omit to fill all)

Output:

{
  "action": "both",
  "rbf": {
    "supported": true,
    "result": { "bumped": 2 }
  },
  "fillGaps": {
    "supported": true,
    "result": { "filled": 0 }
  },
  "summary": "Recovery request sent to relay. Run check-health to verify nonce state improved."
}

Notes

• Always run check-health before recover — recovery without a prior health check may bump transactions unnecessarily.
• If the relay returns 404 or 501 for recovery endpoints, the tool reports supported: false with instructions to contact the AIBTC team.
• The sponsor address for mainnet is SP1PMPPVCMVW96FSWFV30KJQ4MNBMZ8MRWR3JWQ7.
• Wallet operations require an unlocked wallet (use bun run wallet/wallet.ts unlock first).