Dataset Join & Merge
Join two lists of JSON rows on a key, like SQL or VLOOKUP: left, inner, full, anti joins, union.
| Endpoint | https://dataset-join-merge.nerolabs.workers.dev/mcp (streamable-http) |
|---|---|
| Registry version | 0.1.0 |
| Now | 2 tools · grade D (64) · pin ts_3c1c6d3c3a44e88dd98f20643cdedd9a · protocol 2025-06-18 |
| First / last listed | 2026-11-01 03:47 UTC / 2026-11-01 03:47 UTC |
| Grade over time | 2026-11-01: D (64), 2 tools |
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Tools: list_capabilities join_rows
list_capabilities | Returns every join type, key matching mode, conflict strategy and fan-out mode this server supports, the fields it adds to each row, and the input and output row limits per call. Free, processes no data. params: none |
join_rows | Joins two lists of JSON rows on a shared key, like a SQL join or a spreadsheet VLOOKUP, and returns the combined rows plus a summary: how many rows matched on each side, match rates, and warnings for duplicate keys, rows missing the key and key fields that exist on no row. Use it to enrich a list with fields from a lookup table (left join), keep only the overlap (inner), combine two sources into o params: leftRows*, rightRows*, leftKeyFields, rightKeyFields, joinType, keyMatching, rightFields, onFieldConflict, rightFieldPrefix, multipleMatches, includeJoinInfo |
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