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Aztec Energy MCP server

Which MCP servers are Aztec Energy's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-28

← Back to Aztec Energy

Whose server it is
  • Registry nameenergy.aztec/aztec-energyverified in the MCP registry

The registry name sits under aztec.energy. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-28
  • Stateanswerschecked 2026-10-28
  • Tools3
  • Server calls itselfAztec Energy
  • Protocol version2025-06-18

On 2026-10-28 the server answered initialize and tools/list without a sign-in. First answer in 560 ms.

Should an agent connect itConnect it, with care
  • Its tools do Size a heat pump from a client's meter readings, but not Compare heat pump models in a client's home.

Once connected

  • For "Size a heat pump from a client's meter readings", the likely first call is estimer_puissance_pac.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 8, the first on 2026-10-28
  • INITE MCP score86 of 100answers 100 · does the job 50 · definitions 100 · context 100 · connects 100
  • What an agent can do with it1 of 2 use cases
  • Answered100% of days8 of 8 daily checks
  • Median first answer672 ms
  • Space in an agent's context≈ 1,321 tokensthe definitions of all its tools (3), which an agent carries on every turn
  • Tool definitionsA · 100 of 100
  • Typed results3 of 3 toolsdeclared outputSchema: results come typed, read once
  • Every tool passes all six checks.

What an agent can do with it

  • can do · Size a heat pump from a client's meter readings
  • cannot · Compare heat pump models in a client's home
  • not sure · Produce a client report with projected annual savings

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers3 tools · read 2026-10-28
  • estimer_puissance_pac

    Dimensionnement d'une pompe à chaleur (PAC air/eau) à partir de l'historique de consommation réel du logement : bilan thermique, déperditions, puissance nécessaire à la température de base du secteur, consommation électrique estimée de la…

  • estimer_aides

    Estime les aides nationales pour installer une pompe à chaleur air/eau en France : MaPrimeRénov' (catégorie de revenus), Coup de pouce Chauffage (CEE), TVA réduite, éco-prêt à taux zéro, avec le reste à charge si un budget est donné…

  • comment_obtenir_mon_releve

    Explique pas à pas comment obtenir son relevé de consommation (export GRDF pour le gaz, Enedis pour l'électricité, factures pour le fioul) et comment le donner à l'assistant : c'est la donnée indispensable pour dimensionner une pompe à…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "aztec-energy": {
      "type": "http",
      "url": "https://aztec.energy/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http aztec https://aztec.energy/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://aztec.energy/mcp as a custom connector in the settings.

OpenAPI spec

61 paths, read 2026-10-28. Open the spec ↗

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.