JSON to CSV converter — export JSON rows to deterministic RFC 4180 UTF-8 CSV for
JSON to CSV converter — export JSON rows to deterministic RFC 4180 UTF-8 CSV for spreadsheets and data export, using explicit column order or a scalar matrix. Returns byte/row counts, default formula escaping and null-loss warnings; null becomes empty text and nested cells are rejected.
Answeringour last check, 2026-10-10
1 of 1checks answered this week
619 msmedian answer time
$0.01listed price per call
$0.01price 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://json-to-csv.use.x402atlas.com/convert
| Category | Everything else |
|---|---|
| Provider host | json-to-csv.use.x402atlas.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.01 | 619 ms |
Example input (from the provider)
{
"body": {
"formula_policy": "escape",
"rows": [
[
"aaa",
"b\r\nbb",
"ccc"
],
[
"zzz",
"yyy",
"xxx"
]
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"description": "Scalar matrix without columns; empty rows produces empty CSV; each nonempty row must have at least one field",
"properties": {
"formula_policy": {
"default": "escape",
"description": "Escape prepends apostrophe to formula-like cells and headers; preserve emits an injection warning",
"enum": [
"escape",
"preserve"
],
"type": "string"
},
"rows": {
"description": "At most 10000 data rows and 100000 total cells including header; empty outer array is valid",
"items": {
"description": "Nonempty matrix row of scalar cells; all rows have equal width",
"items": {
"description": "Scalar CSV cell; null becomes empty text and exact numbers retain precision",
"type": [
"string",
"number",
"boolean",
"null"
]
},
"maxItems": 256,
"minItems": 1,
"type": "array"
},
"maxItems": 10000,
"type": "array"
}
},
"required": [
"rows"
],
"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": {
"additionalProperties": false,
"description": "Complete structured-data result",
"properties": {
"_atlas": {
"additionalProperties": false,
"description": "Optional Atlas documentation metadata injected by the platform",
"properties": {
"docs": {
"description": "Documentation URL",
"format": "uri",
"maxLength": 512,
"type": "string"
},
"related": {
"description": "Related Atlas routes",
"items": {
"additionalProperties": false,
"description": "Related route",
"properties": {
"bridge": {
"description": "Bridge name",
"type": "string"
},
"docs": {
"description": "Documentation URL",
"type": "string"
},
"summary": {
"description": "Capability summary",
"type": "string"
},
"url": {
"description": "Paid route URL",
"type": "string"
}
},
"required": [
"bridge",
"url",
"docs",
"summary"
],
"type": "object"
},
"maxItems": 3,
"type": "array"
}
},
"required": [
"docs"
],
"type": "object"
},
"algorithm_version": {
"const": "rfc4180-atlas-v1",
"description": "Pinned deterministic algorithm or profile",
"type": "string"
},
"column_count": {
"description": "Fields per record",
"maximum": 256,
"minimum": 0,
"type": "integer"
},
"csv": {
"description": "Exported UTF-8 RFC 4180 CSV with deterministic CRLF endings and quoting; explicit columns in object mode, no header in matrix mode",
"type": "string"
},
"escaped_cells": {
"description": "Cells and headers prefixed with apostrophe",
"maximum": 100000,
"minimum": 0,
"type": "integer"
},
"input": {
"additionalProperties": false,
"description": "Normalized input summary",
"properties": {
"columns": {
"description": "Applied column order, [] in matrix mode",
"items": {
"description": "Column name",
"type": "string"
},
"maxItems": 256,
"type": "array"
},
"formula_policy": {
"default": "escape",
"description": "Escape prepends apostrophe to formula-like cells and headers; preserve emits an injection warning",
"enum": [
"escape",
"preserve"
],
"type": "string"
}
},
"required": [
"columns",
"formula_policy"
],
"type": "object"
},
"null_policy": {
"const": "empty",
"description": "Null cells become empty t