Indie dev expands Australian business-day MCP into 4-tool date engine, now on official MCP Registry
Impossible_Bit_2676 · reddit · 2026-09-05
An Australian developer has expanded his previously shared business-day MCP into a 4-tool date/deadline engine, the first module of AU Agent Utilities — built on the idea that agents shouldn't guess local rules but compute them deterministically.
The four tools:
- checkaustralianbusinessday: check a date and return the previous/next business day
- calculateaustralianbusinessdate: add/subtract business days
- countaustralianbusinessdays: count business days between two dates
- calculateaustraliandeadline: compute calendar/business-day deadlines, optionally rolled to a valid business day
The author tested tricky substitute-holiday edge cases: 24 Dec 2021 + 1 NSW business day lands on 29 Dec 2021, skipping weekend Christmas/Boxing Day plus Monday/Tuesday substitute holidays. All 8 states/territories are supported. v1.2 is publicly deployed, listed on Smithery and the Official MCP Registry (io.github.creatorhub121/au-business-day), with source on GitHub. He plans to keep building AU Agent Utilities beyond dates and is asking what other Australian-specific verification tasks agents need reliable tools for.
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