ParquetHarmonize
https://parquetharmonize-v01-x402-262046248169.northamerica-northeast2.run.app/mcp ↗
Description
Harmonize Parquet schemas; ordinary unions are free, residual reconciliation is x402-gated.
What our measurements say
ParquetHarmonize is a remote MCP server published at parquetharmonize-v01-x402-262046248169.northamerica-northeast2.run.app. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 326 ms, placing it among the faster endpoints. It offers a narrow, focused set of 1 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Agent readability score
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| Run | Era | Modern | ms | Legacy | ms | Versions |
|---|---|---|---|---|---|---|
| 2026-09-13 01:33:33 | Legacy | 400 | 323 | 200 | 317 | 2025-11-25 |
| 2026-09-12 23:31:36 | Legacy | 400 | 326 | 200 | 326 | 2025-11-25 |
| 2026-09-12 21:29:15 | Legacy | 400 | 343 | 200 | 343 | 2025-11-25 |
| 2026-09-12 19:27:29 | Legacy | 400 | 320 | 200 | 323 | 2025-11-25 |
| 2026-09-12 17:24:09 | Legacy | 400 | 318 | 200 | 310 | 2025-11-25 |
| 2026-09-12 15:21:42 | Legacy | 400 | 333 | 200 | 338 | 2025-11-25 |
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 132ms → warm 131ms (penalty 1ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
harmonize_parquetHarmonize 2-8 base64-encoded Parquet files. Ordinary compatible unions are free. Residual schema reconciliation requires an x402 payment of 0.03 USDC on Base.
files_base64arrayrequired
Availability history
Each block is one measurement round. Green: working response. Amber: responded but the server was returning errors (5xx). Red: no response at all.
Era history
Each cell is one probe run. Faded cells are incomplete probes — one leg did not answer, so the era is inconclusive.
Response time history
The two probe legs separately: modern server/discover and legacy initialize.
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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[](https://mcpmetrics.io/servers/io-github-tfitzgerwitness-parquetharmonize)<a href="https://mcpmetrics.io/servers/io-github-tfitzgerwitness-parquetharmonize"><img src="https://mcpmetrics.io/badge/io.github.tfitzgerwitness/parquetharmonize/era.svg" alt="mcpmetrics"></a>You are seeing the last 7 days. Sign up for the full history. Which check failed and why is in the dashboard.
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