Judge a sequence of Avro schema versions against a named compatibility mode
Judge a sequence of Avro schema versions against a named compatibility mode: BACKWARD, FORWARD or FULL, each with its transitive form, or NONE. A transitive mode compares every version against every earlier one; a per-step mode compares only the immediate predecessor, and the gap that leaves is stated rather than hidden. Every comparison performed is listed with its directional result, so a caller can see what was checked as well as the verdict.
Answeringour last check, 2026-10-04
1 of 1checks answered this week
3973 msmedian answer time
$0.18listed price per call
$0.18price 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/avro-compatibility-mode-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 | valid payment request | 402 | $0.18 | 3973 ms |
Example input (from the provider)
{
"body": {
"mode": "BACKWARD_TRANSITIVE",
"versions": [
{
"id": "v1",
"schema": {
"fields": [
{
"name": "id",
"type": "string"
},
{
"default": "",
"name": "a",
"type": "string"
}
],
"name": "Event",
"namespace": "shop",
"type": "record"
}
},
{
"id": "v2",
"schema": {
"fields": [
{
"name": "id",
"type": "string"
},
{
"default": "",
"name": "a",
"type": "string"
},
{
"default": "",
"name": "b",
"type": "string"
}
],
"name": "Event",
"namespace": "shop",
"type": "record"
}
},
{
"id": "v3",
"schema": {
"fields": [
{
"name": "id",
"type": "string"
},
{
"default": "",
"name": "b",
"type": "string"
},
{
"name": "c",
"type": "int"
}
],
"name": "Event",
"namespace": "shop",
"type": "record"
}
}
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"mode": {
"enum": [
"BACKWARD",
"BACKWARD_TRANSITIVE",
"FORWARD",
"FORWARD_TRANSITIVE",
"FULL",
"FULL_TRANSITIVE",
"NONE"
],
"type": "string"
},
"versions": {
"items": {
"additionalProperties": false,
"properties": {
"id": {
"maxLength": 64,
"type": "string"
},
"schema": {
"type": [
"object",
"string"
]
}
},
"required": [
"schema"
],
"type": "object"
},
"maxItems": 25,
"minItems": 2,
"type": "array"
}
},
"required": [
"versions",
"mode"
],
"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"
}