# Soljo Solar (Switzerland) (remote · cwghnqlpeeocjsjfhgyk.supabase.co)

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

- Trust score: 76/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-07

## Components

- remote · `cwghnqlpeeocjsjfhgyk.supabase.co`: 76/100 (this document), [markdown](https://verifymcp.io/servers/ch-soljo-solar/functions-v1-mcp.md), [page](https://verifymcp.io/servers/ch-soljo-solar/functions-v1-mcp)

## Channel facts

- Endpoint: `https://cwghnqlpeeocjsjfhgyk.supabase.co/functions/v1/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.2.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-07.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 73/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 574 tokens (~191/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 17/100
  - Stability observed for 5 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Soljo Solar (Switzerland) MCP server?

Soljo Solar (Switzerland) is a hosted endpoint at https://cwghnqlpeeocjsjfhgyk.supabase.co/functions/v1/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http ch-soljo-solar 'https://cwghnqlpeeocjsjfhgyk.supabase.co/functions/v1/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "ch-soljo-solar": {
      "url": "https://cwghnqlpeeocjsjfhgyk.supabase.co/functions/v1/mcp"
    }
  }
}
```

### VS Code

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

### Codex

```toml
[mcp_servers.ch-soljo-solar]
url = "https://cwghnqlpeeocjsjfhgyk.supabase.co/functions/v1/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "ch-soljo-solar": {
      "type": "remote",
      "url": "https://cwghnqlpeeocjsjfhgyk.supabase.co/functions/v1/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add ch-soljo-solar --url 'https://cwghnqlpeeocjsjfhgyk.supabase.co/functions/v1/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  ch-soljo-solar:
    url: "https://cwghnqlpeeocjsjfhgyk.supabase.co/functions/v1/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "ch-soljo-solar": {
      "Transport": "http",
      "Url": "https://cwghnqlpeeocjsjfhgyk.supabase.co/functions/v1/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add ch-soljo-solar -t streamable-http -u 'https://cwghnqlpeeocjsjfhgyk.supabase.co/functions/v1/mcp'
```

### Other

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

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-07 (score 76, +1)

- [security] The server rewrote its instructions, which are the text every model session reads

### 2026-10-06 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 13. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-03 (score 74, 0)

- [security] Tool “list_cities” rewrote its description, which is the text the model reads
- [functional regression] Schema quality: 170 → 189
- [functional improvement] Stability: unverified → 0.03
- [cosmetic] “list_cities” added an optional parameter “canton”
- [cosmetic] “list_cities” added an optional parameter “name”

### 2026-10-02 (score 74)

First indexed and scored.

## MCP tools (3)

### `solar_first_estimate` (~268 tokens)

Solar first estimate (Switzerland, Germany)

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.

Input parameters:

- `address` (string): Street address in Switzerland or Germany, e.g. 'Bahnhofstrasse 1, 8001 Zürich'. Preferred over coordinates.
- `azimuth` (number): Orientation: 0 = south, -90 = east, 90 = west, 180 = north.
- `country` (string): Country when only coordinates are given.
- `kwp` (number): System size in kWp. A typical single-family home has 8 to 15 kWp.
- `lat` (number): Latitude, only if no address is given.
- `lon` (number): Longitude, only if no address is given.
- `tilt` (number): Roof/panel tilt in degrees. Flat roofs: use 15.

### `geocode_address` (~63 tokens)

Geocode address

Resolve a Swiss or German street address to latitude, longitude, postcode and country (swisstopo address register, OpenStreetMap fallback).

Input parameters:

- `address` (string, required): Full postal address, e.g. 'Bahnhofstrasse 1, 8001 Zürich'.

### `list_cities` (~102 tokens)

List Soljo city pages

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.

Input parameters:

- `canton` (string): Canton abbreviation, e.g. 'ZH', 'BE', 'AG'.
- `name` (string): Part of the municipality name, e.g. 'Uster'.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/ch-soljo-solar/functions-v1-mcp#diagnostics

## Score history

- 2026-10-07: 76
- 2026-10-06: 75
- 2026-10-04: 74
- 2026-10-03: 74
- 2026-10-02: 74

## Common questions

### What is the Soljo Solar (Switzerland) MCP server?

Soljo Solar (Switzerland) is an MCP server listed in the public MCP registry as ch.soljo/solar. Independent rooftop solar first estimate for Switzerland: yield, median cost, subsidy, with sources. This page covers its hosted endpoint (https://cwghnqlpeeocjsjfhgyk.supabase.co/functions/v1/mcp).

### Is the Soljo Solar (Switzerland) MCP server safe to use?

Soljo Solar (Switzerland) scores 76 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Soljo Solar (Switzerland) MCP server expose?

Soljo Solar (Switzerland) exposes 3 tools: solar_first_estimate, geocode_address, list_cities. Their descriptions and schemas cost roughly 433 tokens of context every time the server is loaded.

### Does the Soljo Solar (Switzerland) MCP server require authentication?

No. We connected to Soljo Solar (Switzerland) without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Soljo Solar (Switzerland) MCP server still maintained?

Soljo Solar (Switzerland) is still listed as active in the MCP registry. We last reached this channel on 7 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://cwghnqlpeeocjsjfhgyk.supabase.co/functions/v1/mcp
- Website: https://soljo.ch/methodik
- Changelog RSS feed: https://verifymcp.io/servers/ch-soljo-solar/functions-v1-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/ch-soljo-solar/functions-v1-mcp.json
- HTML version of this page: https://verifymcp.io/servers/ch-soljo-solar/functions-v1-mcp