# merge_datasets

Join datasets on common keys.

Agent View of the PolicyLayer registry record for `merge_datasets`. HTML page: https://policylayer.com/tools/aegntic-aegntic-mcp/merge-datasets

## Facts

- Tool: `merge_datasets`
- Server: Obsidian Elite RAG MCP Server (`aegntic/aegntic-mcp`) — https://policylayer.com/tools/aegntic-aegntic-mcp.md
- Homepage: https://github.com/aegntic/aegntic-MCP
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "merge_datasets",
    "arguments": {}
  }
}
```

## Why merge_datasets is rated Medium

The merge operation creates or transforms data by combining datasets, but does not delete or irreversibly destroy information. It is reversible (the original datasets remain, and the merge can be undone by reprocessing). This qualifies as Write rather than Destructive.

From the tool's own definition: "'Join datasets on common keys' indicates combining/modifying data structures. The tool creates new merged data records, which is a write operation that modifies the dataset state reversibly."

## Use case

AI agents use merge_datasets to create or update resources in Obsidian Elite RAG MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Obsidian Elite RAG MCP Server environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Obsidian Elite RAG MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "merge_datasets": {
      "limits": [
        {
          "counter": "merge_datasets_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Obsidian Elite RAG MCP Server (134)

- `clear_all_datasets` — Destructive — https://policylayer.com/tools/aegntic-aegntic-mcp/clear-all-datasets.md
- `clear_dataset` — Destructive — https://policylayer.com/tools/aegntic-aegntic-mcp/clear-dataset.md
- `clear_expired_context_cache` — Destructive — https://policylayer.com/tools/aegntic-aegntic-mcp/clear-expired-context-cache.md
- `clear_graph` — Destructive — https://policylayer.com/tools/aegntic-aegntic-mcp/clear-graph.md
- `delete_entity_edge` — Destructive — https://policylayer.com/tools/aegntic-aegntic-mcp/delete-entity-edge.md
- `delete_episode` — Destructive — https://policylayer.com/tools/aegntic-aegntic-mcp/delete-episode.md
- `n8n_delete_execution` — Destructive — https://policylayer.com/tools/aegntic-aegntic-mcp/n8n-delete-execution.md
- `n8n_delete_workflow` — Destructive — https://policylayer.com/tools/aegntic-aegntic-mcp/n8n-delete-workflow.md
- `achieve_mouse_authenticity` — Execute — https://policylayer.com/tools/aegntic-aegntic-mcp/achieve-mouse-authenticity.md
- `achieve_typing_authenticity` — Execute — https://policylayer.com/tools/aegntic-aegntic-mcp/achieve-typing-authenticity.md
- `collaborate_with_gemini` — Execute — https://policylayer.com/tools/aegntic-aegntic-mcp/collaborate-with-gemini.md
- `compile_video` — Execute — https://policylayer.com/tools/aegntic-aegntic-mcp/compile-video.md
- `execute_custom_analytics_code` — Execute — https://policylayer.com/tools/aegntic-aegntic-mcp/execute-custom-analytics-code.md
- `n8n_trigger_webhook_workflow` — Execute — https://policylayer.com/tools/aegntic-aegntic-mcp/n8n-trigger-webhook-workflow.md
- `run_performance_benchmark` — Execute — https://policylayer.com/tools/aegntic-aegntic-mcp/run-performance-benchmark.md
- `run_test_audience` — Execute — https://policylayer.com/tools/aegntic-aegntic-mcp/run-test-audience.md
- `start_capture` — Execute — https://policylayer.com/tools/aegntic-aegntic-mcp/start-capture.md
- `stop_capture` — Execute — https://policylayer.com/tools/aegntic-aegntic-mcp/stop-capture.md
- `validate_authenticity` — Execute — https://policylayer.com/tools/aegntic-aegntic-mcp/validate-authenticity.md
- `validate_workflow` — Execute — https://policylayer.com/tools/aegntic-aegntic-mcp/validate-workflow.md
- `validate_workflow_expressions` — Execute — https://policylayer.com/tools/aegntic-aegntic-mcp/validate-workflow-expressions.md
- `subscribe_tier` — Financial — https://policylayer.com/tools/aegntic-aegntic-mcp/subscribe-tier.md
- `join_community` — Other — https://policylayer.com/tools/aegntic-aegntic-mcp/join-community.md
- `sequential_thinking` — Other — https://policylayer.com/tools/aegntic-aegntic-mcp/sequential-thinking.md
- `analyze_brand_performance` — Read — https://policylayer.com/tools/aegntic-aegntic-mcp/analyze-brand-performance.md
- `analyze_distributions` — Read — https://policylayer.com/tools/aegntic-aegntic-mcp/analyze-distributions.md
- `analyze_project` — Read — https://policylayer.com/tools/aegntic-aegntic-mcp/analyze-project.md
- `calculate_feature_importance` — Read — https://policylayer.com/tools/aegntic-aegntic-mcp/calculate-feature-importance.md
- `compare_datasets` — Read — https://policylayer.com/tools/aegntic-aegntic-mcp/compare-datasets.md
- `crawl_single_page` — Read — https://policylayer.com/tools/aegntic-aegntic-mcp/crawl-single-page.md
- …and 104 more: https://policylayer.com/tools/aegntic-aegntic-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=aegntic-aegntic-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/aegntic-aegntic-mcp