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PlanElec Calculators MCP Server

answering

PlanElec Calculators is answering right now. Last checked 14 min ago. It exposes 8 tools.

Free AREI cable sizing, Synergrid C10/26 inverter check, LED strip calculator. No account.

Uptime history 66 hours of history
66 hours agonow
100.0%
Uptime 24h
91 of 91 checks
8
Tools
read from the server
192 ms
Response time
average over 24h
open, no key
Access
streamable-http

Nothing serious here today

Today is the operative word: we check PlanElec Calculators every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 min ago.

run in your terminal
claude mcp add calculators --transport http https://planelec.be/mcp/public
Settings → Connectors → Add custom connector, then paste this address
https://planelec.be/mcp/public
~/.codex/config.toml
[mcp_servers.calculators]
url = "https://planelec.be/mcp/public"
.cursor/mcp.json
{
  "mcpServers": {
    "calculators": {
      "url": "https://planelec.be/mcp/public"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "calculators": {
      "type": "http",
      "url": "https://planelec.be/mcp/public"
    }
  }
}

Available tools 8

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

inverter
check_inverter_c10_26
Checks whether a PV inverter, battery inverter or other power-generating unit (PGU) is on the Synergrid C10/26 list of devices homologated for connection to the Belgian grid. Returns the outcome (found, found_with_limitations, expired, not_found, brand), matching devices with homologation dates, limitations and firmware versions, and homologated alternatives when nothing matches. Where available, each match also carries a separate "datasheet" object with manufacturer datasheet values (DC voltage, MPPT data, links, source URLs, status, last verified date); these are NOT checked by Synergrid and are not part of the approval. Search by brand and model, for example "Huawei SUN2000-10KTL".
get_inverter_datasheet
Returns manufacturer datasheet data for an inverter from the Synergrid C10/26 list: maximum DC voltage, MPPT count and range, current limits per MPPT, start voltage, maximum PV power, battery capability, optimizer architecture, links to the datasheet and installation manual, the product photo URL, source URL and page per value, status (verified = stated in the datasheet, secondary = unconfirmed) and the date last verified. These are manufacturer statements and are NOT part of the Synergrid approval; use check_inverter_c10_26 for the approval status. Look up by Synergrid reference (GLV…) or by brand and model.
regelwerk
get_regelwerk_article
Returns the text of one article of Book 1 of the Belgian AREI/RGIE by its number (for example 4.2.4.3 or "AREI 7.1.4.3"), in the language of the text (Dutch, French or German; English uses the German text), with the edition, change notices of amending decrees, the titles of its sub-articles and a link to the article in the PlanElec reader. Cite the article number and edition when you pass the content on. Use search_regelwerk to find the number.
search_regelwerk
Searches Book 1 of the Belgian AREI/RGIE (Royal Decree on electrical installations) in the language of the text: Dutch, French or German; English uses the German text. Returns up to ten articles with number, title, an excerpt, the edition in force today and a link to the article in the PlanElec reader; the full article text is not returned, use get_regelwerk_article for it. Search by keywords or by article number such as 4.2.4.3. Results are planning aids, not an official inspection.
calculate
calculate_led_strip
Calculates power, current (total and per channel), required feed points, power-supply size and the extra-low-voltage feed cable for an analogue LED strip (5/12/24/48 V DC; single colour, CCT, RGB, RGBW, RGB+CCT). Provide the strip length in metres and either a preset or the datasheet values (voltage, colour channels, watts per metre at full load). Optional: cut unit, maximum length per feed, number of feeds, power-supply reserve, feed-cable length, material and cross-section, and voltage-drop limit. Planning values from datasheet data, not a manufacturer guarantee; current-carrying capacity, heat and AREI/RGIE rules for SELV, bathrooms and outdoor areas are not checked. The response includes a shareable link that opens the calculation on planelec.be.
help
search_help_guides
Searches the PlanElec guides about getting started, automatic planning, document exports, AREI self-check coverage, floor plan import, symbols and circuits in the visitor’s current language. Returns up to five guides with title, summary, category and a link to the full article; the article text itself is not returned.
size
size_cable_arei
Calculates the required copper or aluminium cable cross-section for a residential circuit under the Belgian AREI/RGIE: design current, voltage drop per cross-section, protection check against the breaker rating and the recommended cross-section. Provide the load (A, W, kW or kVA), one-way cable length in metres, the network (1x230V, 3x230V, 3x400V) and the breaker rating; other fields use the defaults for a typical socket circuit. The response includes a shareable link that opens the same calculation on planelec.be.
suggest
suggest_inverter_c10_26
Typeahead for the Synergrid C10/26 list: given a partial brand or model name, returns matching brands with device counts or, once a brand is recognised, its homologated models. Use this to resolve an ambiguous device name before calling check_inverter_c10_26.

Endpoints

URLTransportStateLatencyChecked
https://planelec.be/mcp/public streamable-http answering 204 ms 14 min ago

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PlanElec Calculators — questions

Answers built from our own checks of this server.

What can PlanElec Calculators do?
It exposes 8 tools, read directly from the server on our last check. Among them: calculate_led_strip, check_inverter_c10_26, get_inverter_datasheet, get_regelwerk_article, search_help_guides, search_regelwerk and 2 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
What is PlanElec Calculators mostly used for?
Its tools cluster around inverter and regelwerk. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.
Is PlanElec Calculators working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 192 ms. The bar chart above shows every period we have measured.
How do I connect PlanElec Calculators?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does PlanElec Calculators need an API key?
No. PlanElec Calculators completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 8 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is PlanElec Calculators?
It answers our handshake in 192 ms on average, which is faster than 69% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.