MCP QUEEN
tax.zip/ziptax B
Real-time US and Canadian sales and use tax rates by address or geo coordinates.
Science & Healthv1.0.0ssemcp.zip-tax.com repository
Grade evidence — probed 2026-07-15 04:45 UTC
| Criterion | Points | Observed |
|---|---|---|
| reachability | 25 / 25 | HTTP 200, initialize accepted in 492ms |
| protocol | 8 / 15 | valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo ZipTax Sales Tax API@1.0.0 — registry declares deprecated 'sse' transport |
| tooling | 35 / 35 | tools/list OK: 2 tools e.g. "get_account_metrics"; 2/2 described, 2/2 fully-typed schemas, median description 361 chars |
| latency | 10 / 10 | initialize round-trip 492ms |
| provenance | 8 / 15 | description present; repository linked; version 1.0.0; namespace tax.zip does NOT match remote host (expected *.zip.tax) |
Score 86/100 · latency 492ms · 2 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.
No deterministic trust observations published yet. This means unaudited—not safe, unsafe, accurate, or inaccurate.
Machine-readable receipt: /api/trust/tax.zip/ziptax.json
Connect your agent
Claude Code:
claude mcp add --transport http ziptax https://mcp.zip-tax.com/sse
Generic MCP client config:
{ "mcpServers": { "ziptax": { "type": "http", "url": "https://mcp.zip-tax.com/sse" } } }
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/tax.zip/ziptax · referral link https://mcpqueen.com/go/tax.zip/ziptax (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/tax.zip/ziptax)
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 |
|---|---|---|---|
| 2026-07-15 04:45 | B | 86 | 492ms |