← The evidence ledger
Evidence row 64422
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://anomaly.forgemesh.io/api/mempool-anomaly
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 99e6211a3a22310c1660563910b15d43ce71d3a4109a398ee4ba953a79cfb3c7
- Leaf
- 0x01419aa45ac6a41d5ec61ae750e1c930de2fc3456343249c8d0b737f593ce08f
What was observed
{
"endpoints": [
[
"x402",
"https://anomaly.forgemesh.io/api/mempool-anomaly"
]
],
"name": "anomaly.forgemesh.io/api/mempool-anomaly",
"owner_address": "0xe295b6641b32998537ae0f8e61babf729eaed6e5",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 1800,
"network": "eip155:8453",
"payTo": "0xE295B6641b32998537Ae0f8E61Babf729EAEd6E5",
"scheme": "exact"
}
],
"description": "Returns a real-time mempool anomaly score with current gas price vs 20-block median, pending whale swaps, and contract deploy counts. Poll every 5s to monitor mempool for MEV or sandwich attacks and catch gas spikes or large pending swaps as they happen, before they land on-chain.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"chain": "ethereum"
},
"type": "http"
},
"output": {
"example": {
"chain": "ethereum",
"domain": "mempool",
"gas": {
"base_fee_gwei": 12.1,
"current_gwei": 45.2,
"median_20block_gwei": 14.5,
"ratio_vs_median": 3.12
},
"novelty": "high",
"peak_window": [
"GAS_SPIKE",
"BIG_SWAP",
"WHALE_PENDING",
"MEV_SIGNAL",
"PENDING_NORMAL"
],
"pending_count": 247,
"pending_stats": {
"big_swaps": 3,
"contract_deploys": 2,
"total_value_eth": 1823.5,
"whale_pending": 1
},
"sequence_score": 72,
"story": "MEV Attack"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"chain": {
"description": "Blockchain: ethereum or base (default: ethereum)",
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"chain": {
"type": "string"
},
"gas": {
"type": "object"
},
"novelty": {
"enum": [
"low",
"medium",
"high",
"extreme"
],
"type": "string"
},
"peak_window": {
"items": {
"type": "string"
},
"type": "array"
},
"pending_count": {
"type": "integer"
},
"pending_stats": {
"type": "object"
},
"sequence_score": {
"description": "0=normal mempool, 100=highly anomalous",
"type": "integer"
},
"story": {
"description": "Human-readable mempool anomaly label",
"type": "string"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"builder-code": {
"info": {
"a": "bc_4ypyymtf"
},
"schema": {
"$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"
},
"type": "array"
},
"w": {
"description": "Wallet builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
}
},
"type": "object"
}
},
"offer-receipt": {
"info": {
"offers": [
{
"acceptIndex": 0,
"format": "eip712",
"payload": {
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"network": "eip155:8453",
"payTo": "0xE295B6641b32998537Ae0f8E61Babf729EAEd6E5",
"resourceUrl": "https://anomaly.forgemesh.io/api/mempool-anomaly",
"scheme": "exact",
"validUntil": 1792549083,
"version": 1
},
"signature": "0x5d106cbdc64c90eb287f382aeed6902ad4abcafc691de319224864efa1f7b7047a8f232d76b3cef460d488c39ec31c30822b7c380b7fcb39c35e3122e59b85a91c"
}
]
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"offers": {
"items": {
"properties": {
"acceptIndex": {
"type": "integer"
},
"format": {
"type": "string"
},
"payload": {
"properties": {
"amount": {
"type": "string"
},
"asset": {
"type": "string"
},
"network": {
"type": "string"
},
"payTo": {
"type": "string"
},
"resourceUrl": {
"type": "string"
},
"scheme": {
"type": "string"
},
"validUntil": {
"type": "integer"
},
"version": {
"type": "integer"
}
},
"required": [
"version",
"resourceUrl",
"scheme",
"network",
"asset",
"payTo",
"amount"
],
"type": "object"
},
"signature": {
"type": "string"
}
},
"required": [
"format",
"signature"
],
"type": "object"
},
"type": "array"
}
},
"required": [
"offers"
],
"type": "object"
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"id": {
"maxLength": 128,
"minLength": 16,
"pattern": "^[a-zA-Z0-9_-]+$",
"type": "string"
},
"required": {
"type": "boolean"
}
},
"required": [
"required"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-21T02:13:03.069Z",
"quality": {
"l30DaysTotalCalls": 8,
"l30DaysUniquePayers": 5,
"lastCalledAt": "2026-10-21T02:13:02.741Z"
},
"resource": "https://anomaly.forgemesh.io/api/mempool-anomaly",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Returns a real-time mempool anomaly score with current gas price vs 20-block median, pending whale swaps, and contract deploy counts. Poll every 5s to monitor mempool for MEV or sandwich attacks and catch gas spikes or large pending swaps as they happen, before they land on-chain."
}What the leaf hashes
{"body":"99e6211a3a22310c1660563910b15d43ce71d3a4109a398ee4ba953a79cfb3c7","id":64422,"kind":"listing","method":"baseline/1","observed_us":1793025456614518,"prev":null,"subject":"x402_bazaar:https://anomaly.forgemesh.io/api/mempool-anomaly","subject_kind":"source_record"}Proof
Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.