# CalculPro — outils de calcul du bâtiment (remote · calculpro.fr)

Calculs du bâtiment (France) : chute de tension NF C 15-100 et catalogue de 111 outils.

- Trust score: 85/100 (high trust)
- Change this week: +10
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-29

## Components

- remote · `calculpro.fr`: 85/100 (this document), [markdown](https://verifymcp.io/servers/fr-calculpro-outils-batiment/api-mcp.md), [page](https://verifymcp.io/servers/fr-calculpro-outils-batiment/api-mcp)

## Channel facts

- Endpoint: `https://calculpro.fr/api/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## 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 2026-09-29.

- **Endpoint Security**: 77/100
  - 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.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC is configured correctly; the domain's records validate against the full chain to the root.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 65/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1067 tokens (~533/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 100/100
  - No destabilizing schema changes in the last 30 days.
- **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 2 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 3 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 CalculPro — outils de calcul du bâtiment MCP server?

CalculPro — outils de calcul du bâtiment is a hosted endpoint at https://calculpro.fr/api/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 fr-calculpro-outils-batiment 'https://calculpro.fr/api/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "fr-calculpro-outils-batiment": {
      "url": "https://calculpro.fr/api/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "fr-calculpro-outils-batiment": {
      "type": "http",
      "url": "https://calculpro.fr/api/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.fr-calculpro-outils-batiment]
url = "https://calculpro.fr/api/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "fr-calculpro-outils-batiment": {
      "type": "remote",
      "url": "https://calculpro.fr/api/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add fr-calculpro-outils-batiment --url 'https://calculpro.fr/api/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  fr-calculpro-outils-batiment:
    url: "https://calculpro.fr/api/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "fr-calculpro-outils-batiment": {
      "Transport": "http",
      "Url": "https://calculpro.fr/api/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add fr-calculpro-outils-batiment -t streamable-http -u 'https://calculpro.fr/api/mcp'
```

### Other

```json
{
  "mcpServers": {
    "fr-calculpro-outils-batiment": {
      "type": "http",
      "url": "https://calculpro.fr/api/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.

### 2026-09-28 (score 85, +7)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-27 (score 78, +1)

- [security] Stability: 0.97 → pass
- [security] Tool “rechercher_outil” rewrote its description, which is the text the model reads

### 2026-09-25 (score 77, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-23 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-21 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 77 to 80. That category is still filling its 30-day observation window: 23 days of observed history at the previous scan, 24 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-18 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-16 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-14 (score 72, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (2)

### `calculer_chute_de_tension` (~737 tokens)

Chute de tension d'un câble (NF C 15-100)

Calcule la chute de tension d'une canalisation électrique basse tension et la confronte aux limites de la NF C 15-100 § 525, par la méthode du guide UTE C 15-105.

Deux usages selon que la section est connue :
\- vérification — donnez `section`, l'outil rend un verdict de conformité ;
\- dimensionnement — omettez `section`, l'outil retient la plus petite section normalisée qui tient la limite.

Renvoie aussi la longueur maximale admissible, la tension à l'arrivée, les pertes Joule et la chute obtenue pour chaque section normalisée.

Domaine de validité : une canalisation à section constante, en régime établi et charge équilibrée, conducteurs cuivre ou aluminium, réactance forfaitaire de 0,08 mΩ/m. L'outil ne vérifie NI le courant admissible du câble (échauffement, mode de pose, facteurs de correction), NI la protection contre les contacts indirects, NI le pouvoir de coupure des protections. La chute de tension n'est qu'un critère parmi d'autres : une section validée ici reste à vérifier en courant admissible avant d'être retenue.

Input parameters:

- `alimentation` (string): Origine de l'installation. « reseau-bt » : branchement au réseau public basse tension, limites 3 % en éclairage et 5 % pour les autres usages — c'est le défaut, à la fois le cas le plus courant et le…
- `chute_amont` (number): Chute de tension déjà consommée en amont, en %, pour chaîner plusieurs tronçons (défaut 0).
- `cos_phi` (number): Facteur de puissance du récepteur (défaut 0,85). Sans effet en courant continu.
- `courant` (number): Courant d'emploi IB, en ampères. Renseignez soit le courant, soit la puissance.
- `longueur` (number, required): Longueur simple de la canalisation, en mètres. Donnez la distance aller seulement : le trajet retour est déjà pris en compte.
- `materiau` (string): Métal du conducteur (défaut : cuivre).
- `moteur_demarrage` (boolean): Vérifier en plus la chute au démarrage d'un moteur asynchrone, sous cos φ 0,35 et une limite usuelle de 15 %.
- `puissance` (number): Puissance active transportée, en kW. Alternative au courant d'emploi.
- `rapport_id_in` (number): Rapport courant de démarrage sur courant nominal du moteur (défaut 6 ; typiquement 5 à 8).
- `reseau` (string): Type de réseau : « mono » phase + neutre, « tri » triphasé (défaut), « dc » courant continu.
- `section` (number): Section d'un conducteur, en mm². Omettez ce champ quand l'utilisateur cherche quelle section poser : l'outil bascule alors en dimensionnement.
- `tension` (number): Tension nominale, en volts — entre phases en triphasé. Défauts : 230 V en monophasé, 400 V en triphasé, 48 V en continu.
- `usage` (string): « eclairage » pour un circuit d'éclairage, limite plus sévère ; « autre » pour prises, force et moteurs (défaut).

### `rechercher_outil` (~185 tokens)

Rechercher un outil CalculPro

Recherche un outil de calcul dans le catalogue CalculPro (112 outils : chauffage, plomberie, ventilation, électricité, structure et Eurocodes, isolation, acoustique, éclairage, menuiserie, accessibilité, gaz…).

À appeler quand la demande relève d'un calcul du bâtiment qu'aucun autre outil de ce serveur ne couvre. Renvoie les outils pertinents avec leur adresse, pour orienter l'utilisateur vers le calcul complet sur calculpro.fr.

Cet outil ne calcule rien : il ne fait que chercher dans le catalogue.

Input parameters:

- `limite` (integer): Nombre maximum d'outils à renvoyer (défaut 8).
- `requete` (string, required): Ce que l'utilisateur cherche à calculer, en français — par exemple « déperditions thermiques », « section de câble », « débit d'eau », « poutre acier ».

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/fr-calculpro-outils-batiment/api-mcp#diagnostics

## Score history

- 2026-09-29: 85
- 2026-09-28: 85
- 2026-09-27: 78
- 2026-09-26: 77
- 2026-09-25: 77
- 2026-09-24: 76
- 2026-09-23: 76
- 2026-09-22: 75
- 2026-09-21: 75
- 2026-09-20: 74
- 2026-09-19: 74
- 2026-09-18: 74
- 2026-09-17: 73
- 2026-09-16: 73
- 2026-09-15: 72
- 2026-09-14: 72
- 2026-09-13: 71
- 2026-09-12: 71
- 2026-09-11: 70
- 2026-09-10: 70
- 2026-09-09: 69
- 2026-09-08: 69
- 2026-09-07: 68
- 2026-09-06: 68
- 2026-09-05: 67
- 2026-09-04: 67
- 2026-09-03: 67
- 2026-09-02: 66
- 2026-09-01: 66
- 2026-08-31: 65

## Common questions

### What is the CalculPro — outils de calcul du bâtiment MCP server?

CalculPro — outils de calcul du bâtiment is an MCP server listed in the public MCP registry as fr.calculpro/outils-batiment. Calculs du bâtiment (France) : chute de tension NF C 15-100 et catalogue de 111 outils. This page covers its hosted endpoint (https://calculpro.fr/api/mcp).

### Is the CalculPro — outils de calcul du bâtiment MCP server safe to use?

CalculPro — outils de calcul du bâtiment scores 85 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 CalculPro — outils de calcul du bâtiment MCP server expose?

CalculPro — outils de calcul du bâtiment exposes 2 tools: calculer_chute_de_tension, rechercher_outil. Their descriptions and schemas cost roughly 922 tokens of context every time the server is loaded.

### Does the CalculPro — outils de calcul du bâtiment MCP server require authentication?

No. We connected to CalculPro — outils de calcul du bâtiment without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the CalculPro — outils de calcul du bâtiment MCP server still maintained?

CalculPro — outils de calcul du bâtiment is still listed as active in the MCP registry. We last reached this channel on 29 September 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://calculpro.fr/api/mcp
- Website: https://calculpro.fr/mcp
- Changelog RSS feed: https://verifymcp.io/servers/fr-calculpro-outils-batiment/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/fr-calculpro-outils-batiment/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/fr-calculpro-outils-batiment/api-mcp