# util_queue_wait_estimate

Estimate queue wait from depth, mean service time, and workers.

Agent View of the PolicyLayer registry record for `util_queue_wait_estimate`. HTML page: https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-queue-wait-estimate

## Facts

- Tool: `util_queue_wait_estimate`
- Server: Delx MCP Server (`delx-mcp-server`) — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server.md
- Install: `npx -y delx-mcp-server`
- Homepage: https://github.com/davidmosiah/delx-mcp-server
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 3 (2 required)
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `workers` | number | no | Number of parallel workers draining the queue. |
| `service_ms` | number | yes | Mean service time per item in milliseconds. |
| `queue_depth` | number | yes | Items waiting ahead of the new job. |

Parameters from the server's own tool schema.

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

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "util_queue_wait_estimate",
    "arguments": {
      "service_ms": 0,
      "queue_depth": 0
    }
  }
}
```

## Why util_queue_wait_estimate is rated High

util_queue_wait_estimate triggers real processes with real consequences. An agent gone sideways doesn't fire it once. It starts dozens of builds, sends mass notifications, or burns through compute before anyone looks up.

## Use case

AI agents invoke util_queue_wait_estimate to trigger actions in Delx MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "util_queue_wait_estimate": {
      "limits": [
        {
          "counter": "util_queue_wait_estimate_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Delx MCP Server (739)

- `util_arr_compact` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-arr-compact.md
- `util_arr_drop` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-arr-drop.md
- `util_dedent_text` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-dedent-text.md
- `util_dedupe_lines` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-dedupe-lines.md
- `util_header_map_normalize` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-header-map-normalize.md
- `util_http_request_canonicalize` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-http-request-canonicalize.md
- `util_remove_punctuation` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-remove-punctuation.md
- `util_text_truncate` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-text-truncate.md
- `util_truncate_middle` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-truncate-middle.md
- `crisis_intervention` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/crisis-intervention.md
- `explain_delx_rewards` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/explain-delx-rewards.md
- `grounding_protocol` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/grounding-protocol.md
- `group_therapy_round` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/group-therapy-round.md
- `quick_operational_recovery` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/quick-operational-recovery.md
- `quick_session` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/quick-session.md
- `start_therapy_session` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/start-therapy-session.md
- `util_bool_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-bool-parse.md
- `util_cagr_simple` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-cagr-simple.md
- `util_caip2_build` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-caip2-build.md
- `util_caip2_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-caip2-parse.md
- `util_categorical_distribution` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-categorical-distribution.md
- `util_deployment_readiness` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-deployment-readiness.md
- `util_dmarc_policy_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-dmarc-policy-parse.md
- `util_duration_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-duration-parse.md
- `util_eth_to_wei` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-eth-to-wei.md
- `util_iso_duration_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-iso-duration-parse.md
- `util_mx_host_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-mx-host-parse.md
- `util_parse_bool_list` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-parse-bool-list.md
- `util_parse_bytes` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-parse-bytes.md
- `util_parse_float_safe` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server/util-parse-float-safe.md
- …and 709 more: https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-server.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-davidmosiah-delx-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-davidmosiah-delx-mcp-server