# Crystal Suppliers MCP

> Search verified crystal bracelets and source beads, accessories, and raw materials.

- name: io.github.ziyuant222/crystal-suppliers-mcp
- version: 0.1.1
- connection class: R0 (autonomous)
- trust: 93/100
- quality: 91/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.ziyuant222%2Fcrystal-suppliers-mcp
- tools: https://api.protogrid.dev/v1/servers/io.github.ziyuant222%2Fcrystal-suppliers-mcp/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "crystal-suppliers-mcp": {
      "type": "http",
      "url": "https://ktcrystals.com/mcp"
    }
  }
}
```


## Trust

- hygiene: 95
- liveness: 100
- freshness: 85
- provenance: 90
- drivers: +repository +namespace-matches-repo +website +reachable +uptime-100% ~updated-82d-ago -unpinned-packages(1)
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 91/100 (strong)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 6 of 6 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 1,495 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 6, about 1,495 tokens to load them all
- tool set hash: 0af4aa0b6012808ade387b4a9cea04a1
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.ziyuant222/crystal-suppliers-mcp.svg)](https://protogrid.dev/servers/io.github.ziyuant222/crystal-suppliers-mcp)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://ktcrystals.com/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

- oci ghcr.io/ziyuant222/crystal-suppliers-mcp:0.1.0

## Tools (6)

- `crystal_build_procurement_shortlist`: Build a deterministic shortlist across requested crystal categories. Verified products are limited to catalog bracelets; other categories remain clearly separated advisory items.
- `crystal_get_product`: Get one verified bracelet by exact SKU or slug, including materials, image, source URL, related SKUs, and explicit manual-confirmation status for commercial terms.
- `crystal_get_sourcing_guidance`: Get source-linked procurement checks for bracelets, loose beads, accessories, or raw materials. Adjacent categories are advisory only and never return invented inventory or SKUs.
- `crystal_list_materials`: List normalized materials and real SKU counts from the current verified bracelet catalog. Counts do not claim coverage for loose beads, components, or raw crystals.
- `crystal_prepare_inquiry`: Validate any supplied bracelet SKUs and draft an English wholesale inquiry. This read-only tool never sends, stores, or submits buyer data and never invents price, MOQ, stock, lead time, or certificates.
- `crystal_search_products`: Search the verified 104-SKU bracelet catalog by SKU, name, material, or theme. Beads, accessories, and raw materials return advisory-only coverage with no fabricated SKUs. Commercial terms always require manual confirmation.