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ParquetHarmonize MCP Server

answering

ParquetHarmonize is answering right now. Last checked 13 min ago. It exposes 1 tools.

Harmonize Parquet schemas; ordinary unions are free, residual reconciliation is x402-gated.

Uptime history 63 days of history · worst day 97%
63 days agonow
98.9%
Uptime 24h
90 of 91 checks
1
Tools
read from the server
660 ms
Response time
average over 24h
open, no key
Access
streamable-http

ParquetHarmonize does not always answer

Over the last week it answered 98.9% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 13 min ago.

run in your terminal
claude mcp add parquetharmonize --transport http https://parquetharmonize-v01-x402-262046248169.northamerica-northeast2.run.app/mcp
Settings → Connectors → Add custom connector, then paste this address
https://parquetharmonize-v01-x402-262046248169.northamerica-northeast2.run.app/mcp
~/.codex/config.toml
[mcp_servers.parquetharmonize]
url = "https://parquetharmonize-v01-x402-262046248169.northamerica-northeast2.run.app/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "parquetharmonize": {
      "url": "https://parquetharmonize-v01-x402-262046248169.northamerica-northeast2.run.app/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "parquetharmonize": {
      "type": "http",
      "url": "https://parquetharmonize-v01-x402-262046248169.northamerica-northeast2.run.app/mcp"
    }
  }
}

Available tools 1

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

harmonize
harmonize_parquet
Harmonize 2-8 base64-encoded Parquet files. Ordinary compatible unions are free. Residual schema reconciliation requires an x402 payment of 0.03 USDC on Base.

Endpoints

URLTransportStateLatencyChecked
https://parquetharmonize-v01-x402-262046248169.northamerica-northeast2.run.app/mcp streamable-http answering 316 ms 13 min ago

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ParquetHarmonize — questions

Answers built from our own checks of this server.

What can ParquetHarmonize do?
It exposes 1 tools, read directly from the server on our last check. Among them: harmonize_parquet. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is ParquetHarmonize working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 90 of 91 checks got a reply (98.9%), average response time 660 ms. The bar chart above shows every period we have measured.
How do I connect ParquetHarmonize?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does ParquetHarmonize need an API key?
No. ParquetHarmonize completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 1 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is ParquetHarmonize?
It answers our handshake in 660 ms on average, which is faster than 14% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.