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Calcadian product manual

Everything you need to set Calcadian up and run it yourself. Each page says what a feature is, why you would use it, how to use it, and where its limits are.

Sections

  • Getting started

    What Calcadian does, what each plan is for, and how accounts work.

  • API

    Keys, authentication, quotas, rate limits, errors and versioning.

  • Business Calendars

    Save your working week, public holidays and company closures, then reuse them.

  • Widgets

    Embed a calculator on your site, with or without Calcadian branding.

  • Batch

    Calculate a CSV of rows in one job, with per-row errors you can fix.

  • Calculation Reports

    A reproducible record of the inputs, rules and engine version behind a result.

  • Billing

    Upgrades, downgrades, interval changes, cancellation and failed payments.

  • Account

    Usage, diagnostics, exporting your data and deleting your account.

  • MCP and AI assistants

    Basic date tools inside compatible assistants, and when to use the API instead.

  • Data sources

    Where holiday data comes from, its licence and its limits.

If something is wrong

Start with the diagnostics view in your account. It shows plan state, entitlements, licensed domains, calendar state and the most recent error code for each surface. If that does not explain it, use the contact form.