← The evidence ledger
Evidence row 2633698
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://agents.avasis.ai/v1/eth/fee-plan
- Recorded
- Previous row
- #2253766
- Body SHA-256
- 48e05b0cfb8bb00216d637e96528f5856ae8501f295cf48fd92d70fa088da4d8
- Leaf
- 0x4ac74ceece10b0ec6771577c8e3afafd9efdd183670a5f9e79144330ae2e54e9
What was observed
{
"endpoints": [
[
"x402",
"https://agents.avasis.ai/v1/eth/fee-plan"
]
],
"name": "Avasis Agent Platform",
"owner_address": "0x6264191d6dd5427435b5e829077842e130ef1fc8",
"raw": {
"accepts": [
{
"amount": "20000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0x6264191D6dD5427435B5E829077842e130Ef1fc8",
"scheme": "exact"
}
],
"description": "Ethereum gas fee plan for ONE transaction ($0.02): give gas_limit (+ urgency low/normal/high/next_block, optional max_usd budget) and get the EIP-1559 fields to sign (maxFeePerGas, maxPriorityFeePerGas, hex ready_to_sign), expected + max cost in ETH + USD, blocks to inclusion, the other tiers, and a send_now / downgrade / wait decision with its reason from the latest block's fill. Free live sample /v1/evm/fee-plan/sample. Upstream down 503, never charged.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"gas_limit": 65000,
"urgency": "normal"
},
"type": "http"
},
"output": {
"example": {
"also_try": [
{
"free_sample": "https://agents.avasis.ai/v1/evm/gas-ops/sample",
"price_usd": "0.05",
"url": "https://agents.avasis.ai/v1/evm/gas-ops",
"what": "EVM gas ops kit: Ethereum gas + Base gas fee tiers (slow/standard/fast/urgent), EIP-1559 next base fee, USD cost per tx and for your gas_limit, Base-vs-Ethereum pick, plus Solana slot / priority fees / SOL-USD; one shot, $0.05"
},
{
"free_sample": "https://agents.avasis.ai/v1/evm/tx-precheck/sample",
"price_usd": "0.02",
"url": "https://agents.avasis.ai/v1/eth/tx-precheck",
"what": "Ethereum tx precheck: simulate YOUR unsigned transaction before you sign (would it revert + reason, gas in USD, every transfer, approval exposure, counterparty risk): SIGN / CAUTION / BLOCK"
}
],
"alternatives": [
{
"blocks": [
2,
10
],
"expected": {
"eth": 0.00005915,
"usd": 0.152637
},
"maxFeePerGas": {
"gwei": 0.96125
},
"tier": "slow",
"urgency": "low"
},
{
"blocks": [
1,
1
],
"expected": {
"eth": 0.00012415,
"usd": 0.320369
},
"maxFeePerGas": {
"gwei": 2.32
},
"tier": "fast",
"urgency": "high"
},
{
"blocks": [
1,
1
],
"expected": {
"eth": 0.00015665,
"usd": 0.404235
},
"maxFeePerGas": {
"gwei": 3.23
},
"tier": "urgent",
"urgency": "next_block"
}
],
"chain": "ethereum",
"chainId": 1,
"computedAt": "2026-10-29T12:00:00.500Z",
"decision": {
"action": "send_now",
"reason": "standard tier for normal urgency: latest block 46.3% full vs 50% target, base fee falling (-0.925% next block); expected $0.237 for 65000 gas, typically 1-2 blocks (~12-24 s)",
"requested_tier": "standard",
"tier": "standard"
},
"eth_usd": {
"available": true,
"price": 2580.5,
"source": "chainlink ETH/USD aggregator on Base (latestRoundData)"
},
"headline": "Ethereum: standard tier (normal urgency) = maxFee 1.82 gwei / tip 1 gwei, ~$0.237 for 65000 gas, ~1-2 blocks · send now",
"how_to_use": [
"Type-2 (EIP-1559) transaction: copy ready_to_sign.maxFeePerGas and maxPriorityFeePerGas (hex wei) into your transaction with your to / value / data / nonce; decision.action says send_now, downgrade (a cheaper tier fits max_usd) or wait (re-quote after recheck_in)."
],
"inputs": {
"calldata_bytes": null,
"gas_limit": 65000,
"max_usd": null,
"urgency": "normal"
},
"kit": "evm-fee-plan-1",
"l1_data_fee": {
"applicable": false,
"available": false
},
"market": {
"base_fee": {
"gwei": 0.41
},
"block": {
"ageSeconds": 5,
"gasUsedPct": 46.3,
"number": 23700000,
"timestamp": 1761739195
},
"next_block": {
"base_fee_direction": "falling",
"change_pct": -0.925,
"label": "balanced",
"next_base_fee_estimate": {
"gwei": 0.406208
}
},
"observedAt": "2026-10-29T12:00:00.000Z",
"priority": {
"basis": "node eth_maxPriorityFeePerGas",
"gwei": 1
}
},
"plan": {
"cost": {
"expected": {
"eth": 0.00009165,
"usd": 0.236503
},
"gas": 65000,
"max_authorized": {
"eth": 0.0001183,
"usd": 0.305273
}
},
"inclusion": {
"blocks": [
1,
2
],
"seconds": [
12,
24
]
},
"maxFeePerGas": {
"gwei": 1.82
},
"maxPriorityFeePerGas": {
"gwei": 1
},
"tier": "standard",
"urgency": "normal"
},
"ready_to_sign": {
"chainId": "0x1",
"gas": "0xfde8",
"maxFeePerGas": "0x6c7aff00",
"maxPriorityFeePerGas": "0x3b9aca00",
"tier": "standard",
"type": "0x2"
},
"sources": [
"publicnode ethereum rpc (via stream hub)",
"chainlink ETH/USD (Base feed)"
]
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"gas_limit": {
"description": "gas units of YOUR transaction (default 21000 = ETH transfer; ~65000 ERC-20 transfer, ~46000 approve, ~180000 swap)",
"maximum": 30000000,
"minimum": 21000,
"type": "integer"
},
"max_usd": {
"description": "optional USD gas budget for this transaction: the plan downgrades to the best tier that fits, or says wait when even the slow tier is above it",
"maximum": 100000,
"minimum": 0.000001,
"type": "number"
},
"urgency": {
"description": "low = may wait a few blocks (slow tier), normal = next block or two (default, standard), high = busy blocks (fast), next_block = must land in the very next block (urgent)",
"enum": [
"low",
"normal",
"high",
"next_block"
],
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"alternatives": {
"type": "array"
},
"chain": {
"type": "string"
},
"chainId": {
"type": "integer"
},
"decision": {
"type": "object"
},
"eth_usd": {
"type": "object"
},
"headline": {
"type": "string"
},
"how_to_use": {
"type": "array"
},
"inputs": {
"type": "object"
},
"kit": {
"type": "string"
},
"l1_data_fee": {
"type": "object"
},
"market": {
"type": "object"
},
"plan": {
"type": "object"
},
"ready_to_sign": {
"type": "object"
},
"sources": {
"type": "array"
}
},
"required": [
"kit",
"chain",
"chainId",
"headline",
"decision",
"plan",
"ready_to_sign",
"market",
"eth_usd"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"builder-code": {
"info": {
"a": "bc_d5i1omim"
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"a": {
"description": "App builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"s": {
"description": "Service builder codes",
"items": {
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"maxItems": 11,
"type": "array"
},
"w": {
"description": "Wallet builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
}
},
"type": "object"
}
}
},
"lastUpdated": "2026-11-02T17:29:39.63Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-02T17:29:39.453Z"
},
"resource": "https://agents.avasis.ai/v1/eth/fee-plan",
"serviceName": "Avasis Agent Platform",
"tags": [
"ethereum",
"gas",
"fees",
"evm",
"eip-1559"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Ethereum gas fee plan for ONE transaction ($0.02): give gas_limit (+ urgency low/normal/high/next_block, optional max_usd budget) and get the EIP-1559 fields to sign (maxFeePerGas, maxPriorityFeePerGas, hex ready_to_sign), expected + max cost in ETH + USD, blocks to inclusion, the other tiers, and a send_now / downgrade / wait decision with its reason from the latest block's fill. Free live sample /v1/evm/fee-plan/sample. Upstream down 503, never charged."
}What the leaf hashes
{"body":"48e05b0cfb8bb00216d637e96528f5856ae8501f295cf48fd92d70fa088da4d8","id":2633698,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793734407298275,"prev":2253766,"subject":"x402_bazaar:https://agents.avasis.ai/v1/eth/fee-plan","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (425475 rows).
- 0x4ac748f44ccb1794e4aebf2541386650998df35b372124e22f4683ab1c9b401d
- 0xb85618484e6a9e4032f808f9fa5331b50a627a3ba9cabe96f764cf25e6060e1f
- 0x54598c46c2d32628bdaad345b22d648aabcb7f5e4242008fb62d864e11997d23
- 0xba999d19a99ab2be9345b6c99dc864b45c76250fff3c43430d233c4f30ab3daa
- 0xef638ceb2fed23dac1c7651e1a0283f3eaaaf3c2ec9e7acd0f424ecac71937c0
- 0x07dfe80b749cc01f9d18dec6b03c738e46d2fc4d16cf37b160039d05d20a4180
- 0xb584c8c356aeaf0ad498d2609b0c0ac911aaf7628f1716e831f9bdedc91ec7ca
- 0x4c70a2c5d09de07d7665c2b10e954ff9bbbe7e21fe175fdb7583867706f986ac
- 0xcbcfe3037227e073d74f4f22c49b47f9dc3e58ba481142f51dd6794b5cb89067
- 0xe567a251cf9aa6e1cdacf1096bb9a15e16c60cb8f4e1397289f34be2d8d88c8d
- 0x31275ac765d2425c08f4a2ac1cffeee7ecee316ccca412d790af0a37e84ec73a
- 0xe78bd9e7fcf86c5ca6ffa6b48e71fb238078dfe3bd58a35e0f7e2b1b1cfedccd
- 0x25e7c6e3ae958d725091b9780092a534731cdfe4819dd1ffe52af56311601eb8
- 0x5e9968227987a7f0940fee03a33017f5e7157de7f0889921817733c1ab8871d1
- 0xd106fbd3b5dac57c72dd4fc8931f69b38fd5a542627e63d015b63dadf2188a2f
- 0x35ca4633a97853eefbf38aaf743dd7ff85a4c731ccc8e31a34fd826c3142d6ea
- 0x87df2ed9052c264d606c076742aa7e54b69fc8344b21e972ebcb19d020b7ecf3
- 0x012ad914f3f945da3b6b48eddc7a1388613e4afc04339deb76c609611864e9b9
- 0xe35032d4b064b015fe60638756eeb0bc24e7c7943586468d33349341ee0ed3d6
- Day root
- 0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a
- Chained
- 0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43
- Published
- On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7