Find out whether a batch can be deduplicated
Find out whether a batch can be deduplicated. Reports events carrying no id at all, ids that repeat with an identical payload - a redelivery a consumer must be idempotent about - and, separately, ids that repeat with a different payload, which means the id is not identifying the event. Volatile fields such as a delivery timestamp can be excluded from the comparison without being excluded from the duplicate detection.
Not answeringour last check, 2026-10-04
0 of 1checks answered this week
n/amedian answer time
$0.11listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.zfinia.com/x402/v1/event-idempotency-audit
| Category | Code and developer |
|---|---|
| Provider host | api.zfinia.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-04 | no answer |
Example input (from the provider)
{
"body": {
"events": [
{
"event_id": "evt-1",
"offset": 101,
"order_id": "o-1",
"schema_version": "2",
"stream": "orders-0",
"total": 42.5,
"type": "order.created"
},
{
"event_id": "evt-2",
"offset": 102,
"order_id": "o-2",
"schema_version": "2",
"stream": "orders-0",
"total": 19.99,
"type": "order.created"
},
{
"event_id": "evt-4",
"offset": 104,
"order_id": "o-4",
"schema_version": "2",
"stream": "orders-0",
"total": 7,
"type": "order.created"
},
{
"event_id": "evt-4",
"offset": 105,
"order_id": "o-4",
"schema_version": "2",
"stream": "orders-0",
"total": 7.5,
"type": "order.created"
},
{
"event_id": "evt-5",
"offset": 106,
"order_id": "o-5",
"schema_version": "1",
"stream": "orders-0",
"total": "12.00",
"type": "order.created"
},
{
"event_id": "evt-6",
"offset": 1,
"order_id": "o-1",
"reason": "customer",
"schema_version": "2",
"stream": "orders-1",
"type": "order.cancelled"
},
{
"offset": 2,
"order_id": "o-2",
"reason": "fraud",
"schema_version": "2",
"stream": "orders-1",
"type": "order.cancelled"
}
],
"id_field": "event_id",
"ignore_pointers": [
"/offset"
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"events": {
"items": {
"type": "object"
},
"maxItems": 2000,
"minItems": 1,
"type": "array"
},
"id_field": {
"maxLength": 256,
"type": "string"
},
"ignore_pointers": {
"items": {
"maxLength": 512,
"type": "string"
},
"maxItems": 100,
"minItems": 1,
"type": "array"
}
},
"required": [
"events",
"id_field"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}