# DiffBeam Gaussian Beam Optics

> Read-only optical catalog search plus DiffBeam server, schema, and catalog revision metadata.

- name: com.gaussian-beam/diffbeam
- version: 2.0.0
- connection class: unknown (unknown)
- trust: 60/100 flags: unreachable
- quality: 94/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.gaussian-beam%2Fdiffbeam
- tools: https://api.protogrid.dev/v1/servers/com.gaussian-beam%2Fdiffbeam/tools

**Not classified yet.** The remote endpoints have not been probed successfully, or the listing has nothing to connect to.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "diffbeam": {
      "type": "http",
      "url": "https://catalog-api.gaussian-beam.com/mcp/"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 0
- freshness: 85
- provenance: 75
- drivers: +repository +dns-namespace -unreachable(11 failures) ~updated-66d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 94/100 (good)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list carries no ttlMs, so clients re-fetch it

### 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`: 4 of 4 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 1,168 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

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

- n/a `stability.changes`, `stability.rug_pull`: tool history not recorded yet

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

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

- tools: 4, about 1,168 tokens to load them all
- badge: [![protogrid quality](https://protogrid.dev/badge/com.gaussian-beam/diffbeam.svg)](https://protogrid.dev/servers/com.gaussian-beam/diffbeam)
- 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://catalog-api.gaussian-beam.com/mcp/ (streamable-http, auth none, reachable false, uptime30d 0.56)

## Packages

_none_

## Tools (4)

- `get_diffbeam_state`: Check whether DiffBeam protocol, tools, or catalog data changed.

    If `changed` is true, refresh tool schemas and repeat any catalog searches
    before citing part numbers. This tool is read-only, fast, and stateless.
    
- `search_fiber_collimators`: Search public fiber-collimator catalog rows.

    Use when the user asks for real collimator/coupler part numbers, links, EFL,
    coating range, connector type, clear aperture, or vendor data. Do not use as
    a generic Gaussian-beam solver; it only returns catalog matches.
    
- `search_fibers`: Search public fiber catalog rows.

    Use when the user asks for real fiber part numbers, links, mode-field
    diameter, numerical aperture, wavelength compatibility, or attenuation.
    Returns only catalog data and public URLs; it never reads or writes planner
    workspaces. Retry only after changing the query or when the server returns a
    transient transport error.
    
- `search_lenses`: Search public lens catalog rows.

    Use when the user asks for real lens part numbers, links, focal lengths,
    diameters, coatings, or purchasable candidates for a design. Return matches
    as evidence; never claim a part exists unless it appears in the result.