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APIStack MCP Servers
OBSERVEDMCP servers giving AI agents deterministic API tools
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APIStack provides Model Context Protocol servers that connect AI agents like Claude, ChatGPT and Cursor to a catalog of APIs for tasks such as time zones, holidays, currency conversion, VAT and IBAN validation, company lookups and sanctions screening. A unified endpoint exposes search_apis, get_api_details and call_api tools to access the full catalog with one MCP connection, while dedicated single-purpose servers are available on Pro and Enterprise plans. It is aimed at developers building AI agents that need exact, deterministic data rather than LLM-generated answers.
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1,000 calls/month · 10/min rate limit · No card required
100,000 calls/month · 100/min rate limit
1,000,000 calls/month · 500/min rate limit
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