MCP QUEEN
io.github.zvmzaretsky/utility-belt A
13 deterministic agent utilities: timezone, cron, RRULE, currency, regex, diff, hashing & more.
AI & Agentsv1.0.0streamable-httpbelt.fabtally.com repository
Grade evidence — probed 2026-08-01 10:46 UTC
| Criterion | Points | Observed |
|---|---|---|
| reachability | 25 / 25 | HTTP 200, initialize accepted in 57ms |
| protocol | 15 / 15 | valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo fabtally-belt@1.0.0 |
| tooling | 34 / 35 | tools/list OK: 13 tools e.g. "convert"; 13/13 described, 12/13 fully-typed schemas, median description 296 chars |
| latency | 10 / 10 | initialize round-trip 57ms |
| provenance | 15 / 15 | description present; repository linked; version 1.0.0; namespace io.github.zvmzaretsky matches endpoint/repo |
Score 99/100 · latency 57ms · 13 tools · protocol access: open ⓘ
Trust receipt
Security, data integrity, citation quality, and advertised claims are measured separately from protocol uptime. Missing evidence is marked unverified, never converted into a pass.
| Dimension | Metric | Status | Evidence | Source |
|---|---|---|---|---|
| citation_quality | citation_capability_advertised | unverified | Metadata/tool descriptions advertise citation or evidence capability: Convert an amount between currencies at reference/mid-market rates from a keyless public central-bank feed (ECB), cached. No response-level citation benchmark has verified this claim yet. | live_probe |
| security | authentication_boundary | observed | Live protocol probe observed auth_state=open. This describes discovery/access behavior; it is not by itself a vulnerability finding. Observed value: open | live_probe |
Machine-readable receipt: /api/trust/io.github.zvmzaretsky/utility-belt.json
Connect your agent
Claude Code:
claude mcp add --transport http utility-belt https://belt.fabtally.com/mcp
Generic MCP client config:
{ "mcpServers": { "utility-belt": { "type": "http", "url": "https://belt.fabtally.com/mcp" } } }
MCP Queen is a graded index, not a middleman — your agent connects directly to the server above. Check the grade and evidence first; that's the point.
Share this server: permalink https://mcpqueen.com/s/io.github.zvmzaretsky/utility-belt · referral link https://mcpqueen.com/go/io.github.zvmzaretsky/utility-belt (counts as “routed via the queen”).
Own this server? Embed your grade badge
Live operational-grade badge, re-probed continuously — not a security or data-quality certification. Put it in your README and link to the complete receipt:
[](https://mcpqueen.com/s/io.github.zvmzaretsky/utility-belt)
Think the grade is wrong? Fix the finding the evidence shows, then the next probe cycle picks it up automatically (full cycle ≈ 3 days) — or open a dispute via the MCP endpoint.
Queen Watch
Email alerts when the grade changes or the endpoint stops answering. Double-opt-in, one-click unwatch, free while in beta.
Probe history
| When (UTC) | Grade | Score | Latency |
|---|---|---|---|
| 2026-08-01 10:46 | A | 99 | 57ms |