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Integration guide

Use GreenPT in Claude Code

Claude Code works with GreenPT through three environment variables. Point ANTHROPIC_BASE_URL at api.greenpt.ai, set your GreenPT API key as the auth token, and pick an open-weight coding model such as glm-5.2. Your agent then runs on renewable EU infrastructure, under GDPR, with no training on your code.

The whole switch takes about two minutes and is fully reversible: unset the variables and Claude Code talks to Anthropic again.

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Setup

Connect Claude Code to GreenPT

Every OpenAI-compatible setup needs the same three values. The steps below show where they go in this tool.

Base URL
https://api.greenpt.ai/v1
API key
GREENPT_API_KEY
Model
glm-5.2

  1. Create a GreenPT API key

    Sign up at account.greenpt.ai (14-day free trial, no credit card) and create an API key in the console. Store it in your shell as GREENPT_API_KEY.

  2. Point Claude Code at GreenPT

    Set the Anthropic environment variables to the GreenPT endpoint, your key, and a coding model. Add them to your shell profile to make the switch permanent.

    Terminal
    export ANTHROPIC_BASE_URL=https://api.greenpt.ai
export ANTHROPIC_AUTH_TOKEN=$GREENPT_API_KEY
export ANTHROPIC_MODEL=glm-5.2

  3. Start Claude Code and verify

    Launch Claude Code in a project and give it a small task, for example writing a unit test. The status line shows the active model; /model confirms glm-5.2 is answering.

    Terminal
    cd your-project
claude

Prefer the OpenAI-style endpoint? Run a translation proxy such as LiteLLM or claude-code-router against https://api.greenpt.ai/v1 and point ANTHROPIC_BASE_URL at the proxy instead.

Pick a model

Five open coding models, one key

glm-5.2 is the flagship for agentic software engineering. kimi-k2.7-code handles very large repositories, devstral-2-123b-instruct-2512 is built for SWE agents, qwen3-coder-30b-a3b-instruct is the efficiency pick, and minimax-m2.5 the budget one. All open-weight, all hosted in the EU.

Compare all coding models

Why GreenPT

Why teams point Claude Code at GreenPT

Same agent, same workflow, different footprint. GreenPT serves open-weight coding models from green EU data centres, with privacy guarantees that proprietary defaults do not offer.

  • No training on your code

    Prompts and code are never used for training. GDPR-compliant, EU-based processing with DPAs on request.

  • Open-weight models

    glm-5.2, Kimi K2.7 Code, Devstral 2, Qwen3 Coder, and MiniMax M2.5. You know exactly what you run.

  • Renewable EU infrastructure

    Scaleway green data centres, 100% renewable energy, PUE 1.25 and WUE 0.25, with CO2 tracked per request.

  • One key for everything

    The same GREENPT_API_KEY also serves chat, embeddings, reranking, OCR, speech-to-text, and web search.

Frequently asked questions

Which GreenPT model should I use in Claude Code?

Start with glm-5.2, the flagship for agentic software engineering: long-horizon planning, reliable tool calling, and a 1M-token context. For very large repositories try kimi-k2.7-code, and for budget runs minimax-m2.5.

Compare the coding models →
Can I switch back to Anthropic models?

Yes. Remove the three ANTHROPIC_* environment variables (or open a shell without them) and Claude Code connects to Anthropic as before. Nothing is installed or modified beyond your shell environment.

Does GreenPT train on my code?

No. GreenPT never trains models on your prompts, code, or conversations. Processing happens entirely inside the EU with full GDPR compliance, and data processing agreements are available on request.

How is this more sustainable than the default setup?

GreenPT models run in Scaleway green EU data centres on 100% renewable energy, with a PUE of 1.25 and a WUE of 0.25, well below industry averages. CO2 and energy usage are tracked per request, so you can report the footprint of your coding agent instead of guessing it.

What does it cost?

You pay per token through GreenPT API credits, and every new account starts with a 14-day free trial, no credit card required. Open-weight models are markedly cheaper to run than proprietary frontier models, and you can cut spend further with the Honey agent skill.

View pricing →

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Use GreenPT in other coding agents

Start coding greener

Your agent, our models, less carbon .

Start a free 14-day trial, no credit card. Point Claude Code at one OpenAI-compatible endpoint and run glm-5.2 and friends on 100% renewable energy.

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  • 100% Renewable
  • EU Hosted
  • OpenAI-compatible