# delete_snapshot

Deletes a saved render snapshot by name.

Agent View of the PolicyLayer registry record for `delete_snapshot`. HTML page: https://policylayer.com/tools/0x1f320-why-did-you-render-mcp/delete-snapshot

## Facts

- Tool: `delete_snapshot`
- Server: Why Did You Render (`0x1f320/why-did-you-render-mcp`) — https://policylayer.com/tools/0x1f320-why-did-you-render-mcp.md
- Homepage: https://github.com/0x1f320/why-did-you-render-mcp
- Risk category: Destructive (Critical risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Hidden

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

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

## Why delete_snapshot is rated Critical

The tool removes stored snapshots without possibility of recovery. While snapshots are development artifacts rather than production data, deletion is permanent and cannot be undone. This makes it Destructive rather than Write. An AI agent could misuse this by deleting all snapshots, losing performance history and diagnostic data needed for debugging.

From the tool's own definition: "Tool name 'delete_snapshot' combined with description 'Deletes a saved render snapshot by name' explicitly performs irreversible deletion of data."

## Use case

AI agents call delete_snapshot to permanently remove resources in Why Did You Render, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

## Recommended policy (PolicyLayer)

Verdict: **Hidden**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Why Did You Render:

```json
{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_snapshot"
  ]
}
```

## Other tools on Why Did You Render (13)

- `clear_renders` — Destructive — https://policylayer.com/tools/0x1f320-why-did-you-render-mcp/clear-renders.md
- `pause_renders` — Execute — https://policylayer.com/tools/0x1f320-why-did-you-render-mcp/pause-renders.md
- `wait_for_renders` — Execute — https://policylayer.com/tools/0x1f320-why-did-you-render-mcp/wait-for-renders.md
- `compare_snapshots` — Read — https://policylayer.com/tools/0x1f320-why-did-you-render-mcp/compare-snapshots.md
- `get_commits` — Read — https://policylayer.com/tools/0x1f320-why-did-you-render-mcp/get-commits.md
- `get_projects` — Read — https://policylayer.com/tools/0x1f320-why-did-you-render-mcp/get-projects.md
- `get_render_summary` — Read — https://policylayer.com/tools/0x1f320-why-did-you-render-mcp/get-render-summary.md
- `get_renders` — Read — https://policylayer.com/tools/0x1f320-why-did-you-render-mcp/get-renders.md
- `get_renders_by_commit` — Read — https://policylayer.com/tools/0x1f320-why-did-you-render-mcp/get-renders-by-commit.md
- `get_tracked_components` — Read — https://policylayer.com/tools/0x1f320-why-did-you-render-mcp/get-tracked-components.md
- `list_snapshots` — Read — https://policylayer.com/tools/0x1f320-why-did-you-render-mcp/list-snapshots.md
- `resume_renders` — Write — https://policylayer.com/tools/0x1f320-why-did-you-render-mcp/resume-renders.md
- `save_snapshot` — Write — https://policylayer.com/tools/0x1f320-why-did-you-render-mcp/save-snapshot.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=0x1f320-why-did-you-render-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/0x1f320-why-did-you-render-mcp