Audit your own delimited data against a contract you declare, and get one pass/f
Audit your own delimited data against a contract you declare, and get one pass/fail plus the exact row and clause of every breach. Checks types, required values, enums, numeric bounds, lengths, patterns, uniqueness, composite primary keys, null-rate ceilings, header drift and encoding damage in one pass. A pass means the audit was complete and nothing broke, so a file beyond the bounds reports incomplete rather than passing. Nothing is fetched: you supply the rows.
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/tabular-contract-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": {
"contract": {
"columns": [
{
"name": "order_id",
"required": true,
"type": "integer",
"unique": true
},
{
"enum": [
"USD",
"EUR"
],
"name": "currency",
"required": true,
"type": "string"
},
{
"min": 0,
"name": "amount",
"required": true,
"type": "number"
},
{
"name": "placed_at",
"required": true,
"type": "date"
},
{
"max_null_rate": 0.1,
"name": "email",
"type": "string"
}
],
"primary_key": [
"order_id"
]
},
"csv": "order_id,currency,amount,placed_at,email\n1001,USD,42.50,2026-09-30,a@example.com\n1002,EUR,-3,2026-09-31,\n1001,GBP,19.99,2026-10-01,c@example.com\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": {
"contract": {
"additionalProperties": false,
"properties": {
"allow_extra_columns": {
"type": "boolean"
},
"columns": {
"items": {
"additionalProperties": false,
"properties": {
"enum": {
"items": {
"type": "string"
},
"maxItems": 100,
"type": "array"
},
"max": {
"type": "number"
},
"max_length": {
"minimum": 1,
"type": "integer"
},
"max_null_rate": {
"maximum": 1,
"minimum": 0,
"type": "number"
},
"min": {
"type": "number"
},
"name": {
"type": "string"
},
"pattern": {
"maxLength": 200,
"type": "string"
},
"required": {
"type": "boolean"
},
"type": {
"enum": [
"string",
"integer",
"number",
"boolean",
"date",
"datetime"
],
"type": "string"
},
"unique": {
"type": "boolean"
}
},
"required": [
"name"
],
"type": "object"
},
"maxItems": 64,
"minItems": 1,
"type": "array"
},
"primary_key": {
"items": {
"type": "string"
},
"minItems": 1,
"type": "array"
},
"require_column_order": {
"type": "boolean"
}
},
"required": [
"columns"
],
"type": "object"
},
"csv": {
"maxLength": 262144,
"type": "string"
},
"delimiter": {
"maxLength": 1,
"minLength": 1,
"type": "string"
}
},
"required": [
"csv",
"contract"
],
"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"
}