CSV to JSON API

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.):

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

Related MCP server: Pylon MCP Server

Quickstart -- HTTP (x402)

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

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

Example response:

{"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)

Part of klymax402

100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.

• Catalog: https://klymax402.com/llms.txt

• Full API reference: https://klymax402.com/llms-full.txt

• Live stats: https://klymax402.com/stats

License

MIT