Which MCP Server Should You Choose?
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Choose Postio — UK Address, Postcode, Email & Phone Validation when:
- You need dedicated capabilities in the Communication domain.
- You prefer local stdio subprocess transport architecture.
- Your security boundary fits: No auth required (Free / Open Source).
Choose ARBuilder when:
- You need dedicated capabilities in the Communication domain.
- You prefer local stdio subprocess transport architecture.
- Your security boundary fits: API Key required (Freemium).
- You have access to required keys:
ARBUILDER_API_KEY. - Primary tools included: get_stylus_context, generate_stylus_code, ask_stylus.