Dataset Filter & Transform
https://dataset-filter-transform.nerolabs.workers.dev/mcp ↗
Description
Clean, filter and reshape JSON rows in one call: 26 transforms, 25 filters, sort, dedupe, limit.
What our measurements say
Dataset Filter & Transform is a remote MCP server published at dataset-filter-transform.nerolabs.workers.dev. It has been probed 5 times since 9/13/2026. It answered in 5 of them (100.0%), a near-uninterrupted record. Median response time is 227 ms, placing it among the faster endpoints. It offers a narrow, focused set of 2 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 12:47:19 | Legacy | 200 | 241 | 200 | 235 | 2025-06-18 |
| 2026-09-13 10:45:14 | Legacy | 200 | 269 | 200 | 227 | 2025-06-18 |
| 2026-09-13 08:43:04 | Legacy | 200 | 177 | 200 | 153 | 2025-06-18 |
| 2026-09-13 06:40:42 | Legacy | 200 | 215 | 200 | 242 | 2025-06-18 |
| 2026-09-13 04:35:29 | Legacy | 200 | 139 | 200 | 153 | 2025-06-18 |
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 passed · last run:
- Cold-start: cold 40ms → warm 42ms (penalty 0ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
list_capabilitiesReturns every filter operator and transform operation this server supports, the order the pipeline runs in, and the maximum rows per call. Call this first if you are unsure what is available. Free, processes no data.
process_rowsCleans a list of JSON rows in one call: transforms each row, filters out the rows you do not want, then optionally sorts, de-duplicates and limits them. Returns the kept rows plus a summary of exactly what was removed and why. Use it to reshape scraped or API data before passing it on: rename and drop fields, cast strings to numbers, compute new fields with arithmetic, extract with regex, then keep only the rows that match your rules. Transforms run before filters, so you can filter on a field you just created.
rowsarrayrequiredtransformsarrayfiltersarrayfilterCombineModestringcaseSensitiveFiltersbooleanlenientNumbersbooleansortByarraydistinctByarrayoffsetintegerlimitinteger
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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