# Soljo Solar (Switzerland)

> Independent rooftop solar first estimate for Switzerland: yield, median cost, subsidy, with sources

- name: ch.soljo/solar
- version: 0.2.0
- connection class: R0 (autonomous)
- trust: 83/100 flags: no-repository
- quality: 89/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/ch.soljo%2Fsolar
- tools: https://api.protogrid.dev/v1/servers/ch.soljo%2Fsolar/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "solar": {
      "type": "http",
      "url": "https://cwghnqlpeeocjsjfhgyk.supabase.co/functions/v1/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 100
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-100% +updated-18d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 89/100 (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 declares ttlMs 0, so clients re-fetch it on every use

### 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: 86 (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`: 3 of 3 tools declare readOnlyHint or destructiveHint
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: geocode_address (destructiveHint); solar_first_estimate (destructiveHint); list_cities (destructiveHint)
- pass `tools.token_cost`: about 688 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`: 1 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: 3, about 688 tokens to load them all
- tool set hash: 38c559809bdc6c5db79f7667a8754d5f
- tools last changed: 2026-10-02T18:16:57.724Z
- badge: [![protogrid quality](https://protogrid.dev/badge/ch.soljo/solar.svg)](https://protogrid.dev/servers/ch.soljo/solar)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-02 `list_cities` changed (description, inputSchema)
  - before: List Swiss cities with a Soljo page showing local electricity price (ElCom), solar yield (PVGIS), feed-in tariff, subsidy programmes and an example calculation, each with sources.
  - after: List Swiss cities and municipalities (about 200, German-speaking) with a Soljo page showing local electricity price (ElCom), solar yield (PVGIS), feed-in tariff, subsidy programmes and an example calculation, each with sources. Filter by canton or name.

Full history: https://api.protogrid.dev/v1/servers/ch.soljo%2Fsolar/changes

## Remotes

- https://cwghnqlpeeocjsjfhgyk.supabase.co/functions/v1/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (3)

- `geocode_address`: Resolve a Swiss or German street address to latitude, longitude, postcode and country (swisstopo address register, OpenStreetMap fallback).
- `list_cities`: List Swiss cities and municipalities (about 200, German-speaking) with a Soljo page showing local electricity price (ElCom), solar yield (PVGIS), feed-in tariff, subsidy programmes and an example calculation, each with sources. Filter by canton or name.
- `solar_first_estimate`: First estimate for a rooftop solar system at a Swiss or German address: annual yield (PVGIS), and for Switzerland the median turnkey cost (federal price study 2025, incl. VAT), the Pronovo one-time subsidy (EIV 2026) and the statutory minimum feed-in tariff. Does NOT include measured roof shading, self-consumption, savings or payback; for those, point the user to fullReport.url (the Soljo report). Always cite the returned sources and say it is a rough estimate.