Dataset Diff & Change Detector MCP
A remote MCP server that allows agents to compare two versions of a list of JSON rows. It identifies exactly which rows were added, removed, or changed between the two datasets, supporting up to 500 rows per call via the diff_rows tool.
Endpoint and access
No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.
https://dataset-diff-detector.nerolabs.workers.dev/mcpWhat its tools do
2 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.
Not annotated (2)
Checks and signals
Each line is separate evidence, not a trust score.
- Passed Endpoint answered the live check ·
- Availability 1 of 1 checks passed in 30 days
What you can do with it
- Compare two versions of a JSON row list
- Identify added, removed, or changed fields
- Check dataset integrity between versions
Source and maintenance
- Maintenance checked
Protocol and capabilities
- Server
- nerolabs-dataset-diff-detector 0.1.0
- MCP protocol negotiated in check
- 2025-06-18
- Tools
- 2 advertised
- Resources
- Not advertised
- Resource templates
- Not advertised
- Prompts
- Not advertised
{
"tools": {
"listChanged": false
}
}Server-provided instructions
Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.
Tools
2 advertised
list_capabilities
Returns the exact matching and comparison rules diff_rows uses, the shape and order of its output rows, and the maximum rows per call. Call this first if you are unsure how values are compared. Free, processes no data.
{
"type": "object",
"properties": {},
"additionalProperties": false
}diff_rows
Compares two versions of the same list of JSON rows (a before and an after snapshot, such as yesterday's and today's price list, product feed or CRM export) and returns one row per difference: status added, removed or changed, the key, the old and new values, and changedFields naming exactly which fields moved. Set keyFields to the field(s) that identify a row (sku, id, email); without it rows match on full content and an edited row shows as removed plus added. Comparison is exact: "19.99" (text) and 19.99 (a number) differ, as do "Blue" and "blue " and null and a missing field; nested objects compare by value. Put always-changing fields such as timestamps in ignoreFields. The summary counts added, removed, changed and unchanged rows and warns about duplicate keys, rows missing a key, and field names found in no row. oldRows and newRows together are limited per call (list_capabilities gives the number); larger calls are refused with a message saying how to split them.
{
"type": "object",
"required": [
"oldRows",
"newRows"
],
"properties": {
"newRows": {
"type": "array",
"items": {
"type": "object"
},
"description": "The after snapshot: a JSON array of row objects, the same kind of rows as oldRows. At least one row."
},
"oldRows": {
"type": "array",
"items": {
"type": "object"
},
"description": "The before snapshot: a JSON array of row objects. At least one row. Keys may differ between rows."
},
"keyFields": {
"type": "array",
"items": {
"type": "string"
},
"description": "Field name(s) that uniquely identify a row on both sides, for example [\"sku\"] or [\"country\",\"sku\"]. Strongly recommended: without it a changed row is reported as one removed row plus one added row."
},
"ignoreFields": {
"type": "array",
"items": {
"type": "string"
},
"description": "Optional. Fields never compared, for example [\"scrapedAt\",\"lastChecked\"], so a timestamp alone does not mark a row changed."
},
"compareFields": {
"type": "array",
"items": {
"type": "string"
},
"description": "Optional. Only these fields decide whether a matched row changed. Default: every field on either row."
},
"includeUnchanged": {
"type": "boolean",
"description": "Optional, default false. Set true to also return matched rows with no difference (status \"unchanged\"). They are always counted in the summary."
}
},
"additionalProperties": false
}Prompts
Not advertised
Resources
Not advertised
90-day uptime
A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.
- 2026-11-07: 1 of 1 checks answered
30-day availability
Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.
- Successful checks
- 1 of 1 (100%)
- Average latency
- 723 ms
- 95th percentile latency
- 723 ms
Maintenance history
Public check and source-refresh events. Editorial and ownership records remain private.
- · probe · passed · 723 ms · metadata changed · 2 tool(s)
Connect from your client
Each snippet registers the same endpoint; pick the client you use.
Claude Code
claude mcp add --transport http dataset-diff-change-detector-mcp https://dataset-diff-detector.nerolabs.workers.dev/mcpCodex
codex mcp add dataset-diff-change-detector-mcp --url https://dataset-diff-detector.nerolabs.workers.dev/mcpCursor
{
"mcpServers": {
"dataset-diff-change-detector-mcp": {
"url": "https://dataset-diff-detector.nerolabs.workers.dev/mcp"
}
}
}Cline
{
"mcpServers": {
"dataset-diff-change-detector-mcp": {
"type": "streamableHttp",
"url": "https://dataset-diff-detector.nerolabs.workers.dev/mcp",
"disabled": false
}
}
}VS Code
{
"servers": {
"dataset-diff-change-detector-mcp": {
"type": "http",
"url": "https://dataset-diff-detector.nerolabs.workers.dev/mcp"
}
}
}Gemini CLI
gemini mcp add --transport http dataset-diff-change-detector-mcp https://dataset-diff-detector.nerolabs.workers.dev/mcpClaude Desktop
https://dataset-diff-detector.nerolabs.workers.dev/mcpWindsurf
{
"mcpServers": {
"dataset-diff-change-detector-mcp": {
"serverUrl": "https://dataset-diff-detector.nerolabs.workers.dev/mcp"
}
}
}Let your agent find its tools
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