Audit one GraphQL schema and separate what stops it building from what is legal
Audit one GraphQL schema and separate what stops it building from what is legal and costs something. Reports a type implementing an interface without declaring its fields, a reference to an undefined type, a union member that is not an object type, an interface nothing implements, and an absent query root. Separately reports a nullable list item type, which forces every client to handle three outcomes, and a deprecation with no reason. Unreachable types are named as dead weight.
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/graphql-schema-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 | $0.13 | 5758 ms |
Example input (from the provider)
{
"body": {
"schema": "type Query {\n feed: [Post]\n me: Account\n}\n\ninterface Timestamped { createdAt: String! }\ninterface Archivable { archivedAt: String }\n\ntype Post implements Timestamped {\n id: ID!\n body: String!\n legacyTitle: String @deprecated\n author: Author\n}\n\ntype Account { id: ID! }\ntype Orphan { id: ID! }\n"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"require_deprecation_reasons": {
"type": "boolean"
},
"schema": {
"maxLength": 262144,
"type": "string"
}
},
"required": [
"schema"
],
"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"
}