Tx unstick on Base (chain 8453, $0.02): address (+ tx hash or nonce, urgency) ->...

{ "method": "GET", "queryParams": { "address": "0xf977814e90da44bfa03b6295a0616a897441acec", "chain": "base", "tx": "0x5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c", "urgency": "high" }, "type": "http" }

{ "example": { "address": "0xf977814e90da44bfa03b6295a0616a897441acec", "block_number": 53354727, "block_timestamp": 1793498801, "cancel": { "chainId": "0x2105", "data": "0x", "from": "0xf977814e90da44bfa03b6295a0616a897441acec", "gas": "0x5208", "maxFeePerGas": "0xaf79e0", "maxPriorityFeePerGas": "0x16e360", "nonce": "0x79ed9", "note": "ready to sign from `from`: a 0-value self-transfer with the stuck nonce and the bumped fees; signing and broadcasting it drops the original", "to": "0xf977814e90da44bfa03b6295a0616a897441acec", "type": "0x2", "value": "0x0" }, "chain": "base", "chain_id": 8453, "cost": { "balance_eth": "0.0421", "balance_wei": "42100000000000000", "can_pay_cancel": true, "cancel_expected": { "eth": 1.365e-7, "usd": 0.000306156, "wei": "136500000000" }, "cancel_max": { "eth": 2.415e-7, "usd": 0.00054166, "wei": "241500000000" }, "eth_usd": 2242.9, "note": "21000 gas at the replacement fees (max = authorized ceiling, expected = base fee + tip); excludes the Base L1 data fee (~$0.0003-0.001 per tx, priced by /v1/base/fee-plan); the speed-up costs its own gas limit x the same fees", "price_source": "chainlink ETH/USD (latestRoundData)" }, "fee_market": { "base_fee_gwei": 0.005, "priority_basis": "node eth_maxPriorityFeePerGas", "priority_gwei": 0.001, "tier": { "max_fee_per_gas": { "gwei": 0.0115, "wei": "11500000" }, "max_priority_fee_per_gas": { "gwei": 0.0015, "wei": "1500000" }, "tier": "fast", "when": "busy blocks: out-bid the median tip" }, "urgency": "high" }, "headline": "STUCK UNDERPRICED on Base: maxFeePerGas 0.004 gwei is below the current base fee 0.005 gwei: the tx cannot be included until the base fee drops; replace it with the same nonce 499417 at the fast tier (+10 % rule applied); cancel = nonce 499417 at 0.0115 gwei max / 0.0015 gwei tip ($0.0003)", "kind": "tx-unstick", "nonces": { "confirmed": 499417, "gap": 4, "mempool_visible": true, "note": "pending = this node's pending-nonce view (no txpool RPC on public hosts): a gap of 0 can still hide a tx in a private mempool", "pending": 499421 }, "rail": "evm-tx-unstick-1", "reads": { "calls": 9, "elapsed_ms": 7, "rpc": "fixture" }, "replacement": { "basis": "fast tier already above +10 % of the original", "max_fee_per_gas": { "gwei": 0.0115, "wei": "11500000" }, "max_priority_fee_per_gas": { "gwei": 0.0015, "wei": "1500000" }, "min_max_fee_gwei": 0.004400001, "min_priority_fee_gwei": 0.000110001, "nonce": 499417, "priority_basis": "node eth_maxPriorityFeePerGas", "rule": "same nonce; maxPriorityFeePerGas AND maxFeePerGas each >= original x 1.10 (geth / op-geth), never below the chosen tier, maxFee >= 2 x base fee + priority", "tier": "fast", "urgency": "high" }, "speed_up": { "chainId": "0x2105", "data": "0xa9059cbb000000000000000000000000128b1240168fcb68bd2d98d718e559337722c93a000000000000000000000000000000000000000000000000000000000038c340", "from": "0xf977814e90da44bfa03b6295a0616a897441acec", "gas": "0x124f8", "maxFeePerGas": "0xaf79e0", "maxPriorityFeePerGas": "0x16e360", "nonce": "0x79ed9", "note": "the original call with the bumped fees (same nonce, to, value, data, gas): re-simulate before signing at /v1/base/tx-precheck", "to": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913", "type": "0x2", "value": "0x0" }, "tx": { "block_number": null, "found": true, "gas_limit": 75000, "hash": "0x5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c", "input": { "args": { "amount_raw": "3720000", "spender_or_to": "0x128b1240168fcb68bd2d98d718e559337722c93a" }, "kind": "transfer", "method": "transfer", "selector": "0xa9059cbb", "signature": "transfer(address,uint256)", "to_known": "USDC (Circle)" }, "low_tip": true, "max_fee_per_gas_gwei": 0.004, "max_priority_fee_per_gas_gwei": 0.0001, "mined": false, "nonce": 499417, "queued_behind": 0, "state": "next", "status": "pending", "to": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913", "type": "eip-1559", "underpriced": true, "value_eth": "0", "value_wei": "0" }, "verdict": { "action": "replace", "level": "STUCK_UNDERPRICED", "reasons": [ "maxFeePerGas 0.004 gwei is below the current base fee 0.005 gwei: the tx cannot be included until the base fee drops; replace it with the same nonce 499417 at the fast tier (+10 % rule applied)" ], "stuck": true } }, "type": "json" }