Parse CSV to JSON array -- auto-detect delimiter (comma/semicolon/tab/pipe), header row support. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

json

{
  "mcpServers": {
    "csv-to-json": {
      "url": "https://csv-to-json.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

bash

curl -X POST "https://csv-to-json.api.klymax402.com/api/parse" \
  -H "Content-Type: application/json" \
  -d '{"csv":"..."}'
# -> 402 Payment Required, with an x402 payment challenge in the response body

Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.

Tools

Tool	Method	Path	Price	Description
`data_parse_csv_to_json`	POST	`/api/parse`	$0.003	Parse CSV text to JSON array

`data_parse_csv_to_json`

Use this when you need to convert CSV data to a JSON array. Returns parsed data with auto-detected settings in JSON.

Parameters

Name	Type	Required	Description
`csv`	string	yes	CSV content to parse
`delimiter`	string	no	Delimiter: comma, semicolon, tab, pipe (default: auto-detect)
`hasHeaders`	boolean	no	First row is headers (default: true)

Example response:

json

{"data":[{"name":"Alice","age":"30","city":"Paris"},{"name":"Bob","age":"25","city":"London"}],"rowCount":2,"columnCount":3,"detectedDelimiter":",","headers":["name","age","city"]}

When to use: data migration, importing spreadsheets into APIs, converting exported CSV reports, and preparing tabular data for analysis.

Not for: JSON validation (use data_validate_json), markdown conversion (use text_convert_markdown_to_html), web scraping (use web_scrape_to_markdown).

Example agent prompts

"Convert CSV data to a JSON array"

Payment

Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
Network: Base L2 (eip155:8453)
Asset: USDC
Facilitator: Coinbase CDP (primary), PayAI (fallback)
Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)