Check whether a set of spans forms coherent traces
Check whether a set of spans forms coherent traces. Reports a parent that is not in the data, so the trace renders as fragments rather than one tree; a trace with no root or several; a cyclic parent chain, which makes any walk loop; a span that ends before it starts; and a child whose times fall outside its parent, which is clock skew between hosts rather than a code defect and which every latency figure derived from the trace inherits.
Answeringour last check, 2026-10-04
1 of 1checks answered this week
4286 msmedian answer time
$0.22listed price per call
$0.22price 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/trace-integrity-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 | $0.22 | 4286 ms |
Example input (from the provider)
{
"body": {
"spans": "[\n {\n \"trace_id\": \"t1\",\n \"span_id\": \"a\",\n \"name\": \"GET /orders\",\n \"kind\": \"SPAN_KIND_SERVER\",\n \"start_time\": \"2026-10-02T12:00:00.000Z\",\n \"end_time\": \"2026-10-02T12:00:00.500Z\",\n \"attributes\": {\n \"http.request.method\": \"GET\",\n \"http.route\": \"/orders\"\n }\n },\n {\n \"trace_id\": \"t1\",\n \"span_id\": \"b\",\n \"parent_span_id\": \"a\",\n \"name\": \"SELECT orders\",\n \"kind\": \"SPAN_KIND_CLIENT\",\n \"start_time\": \"2026-10-02T11:59:59.960Z\",\n \"end_time\": \"2026-10-02T12:00:00.200Z\",\n \"attributes\": {}\n },\n {\n \"trace_id\": \"t1\",\n \"span_id\": \"c\",\n \"parent_span_id\": \"zz\",\n \"name\": \"cache.get\",\n \"start_time\": \"2026-10-02T12:00:00.100Z\",\n \"end_time\": \"2026-10-02T12:00:00.110Z\",\n \"attributes\": {}\n },\n {\n \"trace_id\": \"t2\",\n \"span_id\": \"d\",\n \"name\": \"GET /orders/8827341/items\",\n \"kind\": \"HTTP_SERVER\",\n \"start_time\": \"2026-10-02T12:00:01.000\",\n \"end_time\": \"2026-10-02T12:00:01.300Z\",\n \"attributes\": {\n \"http.request.method\": \"GET\"\n }\n }\n]"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"clock_skew_tolerance_ms": {
"maximum": 600000,
"minimum": 0,
"type": "integer"
},
"spans": {
"maxLength": 2097152,
"type": "string"
}
},
"required": [
"spans"
],
"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"
}