# groupby_operations

Group data by columns and apply aggregations (sum, mean, count, min, max, std, median) with optional pre-filter.

Agent View of the PolicyLayer registry record for `groupby_operations`. HTML page: https://policylayer.com/tools/io-github-iowarp-adios-mcp/groupby-operations

## Facts

- Tool: `groupby_operations`
- Server: CLIO Adios (`pypi:clio-kit`) — https://policylayer.com/tools/io-github-iowarp-adios-mcp.md
- Install: `npx -y pypi:clio-kit`
- Homepage: https://github.com/iowarp/clio-kit
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

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

## Why groupby_operations is rated Low

The tool performs data grouping and statistical aggregation operations—standard analytical queries on BP5 data. No mutations, deletions, code execution, or side effects are indicated. The 'optional pre-filter' is a read parameter, not a write or destructive action. This falls squarely under Read category with low severity because misuse would only affect query results, not data integrity or system state.

From the tool's own definition: "Tool description states it 'Group data by columns and apply aggregations (sum, mean, count, min, max, std, median) with optional pre-filter.' These are read-only analytical operations that compute statistics on existing data without modifying, deleting, or…"

## Use case

AI agents call groupby_operations to retrieve information from CLIO Adios without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches CLIO Adios:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "groupby_operations": {}
  }
}
```

## Other tools on CLIO Adios (203)

- `cancel_slurm_job` — Destructive — https://policylayer.com/tools/io-github-iowarp-adios-mcp/cancel-slurm-job.md
- `destroy_pipeline` — Destructive — https://policylayer.com/tools/io-github-iowarp-adios-mcp/destroy-pipeline.md
- `jm_remove_repo` — Destructive — https://policylayer.com/tools/io-github-iowarp-adios-mcp/jm-remove-repo.md
- `jm_reset` — Destructive — https://policylayer.com/tools/io-github-iowarp-adios-mcp/jm-reset.md
- `remove_pkg` — Destructive — https://policylayer.com/tools/io-github-iowarp-adios-mcp/remove-pkg.md
- `slurm_cancel` — Destructive — https://policylayer.com/tools/io-github-iowarp-adios-mcp/slurm-cancel.md
- `allocate_slurm_nodes` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/allocate-slurm-nodes.md
- `build_pipeline_env` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/build-pipeline-env.md
- `generate_isosurface` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/generate-isosurface.md
- `heatmap_plot` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/heatmap-plot.md
- `hypothesis_testing` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/hypothesis-testing.md
- `jarvis_run` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/jarvis-run.md
- `jm_cd` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/jm-cd.md
- `jm_graph_build` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/jm-graph-build.md
- `module_load` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/module-load.md
- `module_swap` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/module-swap.md
- `module_unload` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/module-unload.md
- `parallel_sort_large_file` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/parallel-sort-large-file.md
- `reset_camera` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/reset-camera.md
- `rotate_camera` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/rotate-camera.md
- `run_pipeline` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/run-pipeline.md
- `show_screenshot_preview` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/show-screenshot-preview.md
- `stop_chronolog` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/stop-chronolog.md
- `submit_array_job` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/submit-array-job.md
- `submit_slurm_job` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/submit-slurm-job.md
- `warp_by_vector` — Execute — https://policylayer.com/tools/io-github-iowarp-adios-mcp/warp-by-vector.md
- `aggregate_column_tool` — Read — https://policylayer.com/tools/io-github-iowarp-adios-mcp/aggregate-column-tool.md
- `analyze_file_access_patterns` — Read — https://policylayer.com/tools/io-github-iowarp-adios-mcp/analyze-file-access-patterns.md
- `analyze_log_statistics` — Read — https://policylayer.com/tools/io-github-iowarp-adios-mcp/analyze-log-statistics.md
- `analyze_mpiio_operations` — Read — https://policylayer.com/tools/io-github-iowarp-adios-mcp/analyze-mpiio-operations.md
- …and 173 more: https://policylayer.com/tools/io-github-iowarp-adios-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=io-github-iowarp-adios-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-iowarp-adios-mcp