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    Timezone Boundary Test Builder

    1

    Build timezone and date-boundary tests in a repo using Cursor.

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    Timezone Boundary Test Builder

    Timezone Boundary Test Builder

    Example session with this skill installed

    Our trial expiry logic is off by one day for Australian users. Inspect our billing helper and add a test case for this boundary.

    • Read your context and instructions
    • Compiled the timezone boundary test

    Found off-by-one risk in calcExpiry(). The logic uses local midnight instead of UTC. Proposing patch for billing.ts and added Australian/Sydney DST boundary test in billing.test.ts. Run npm test to verify.

    Connects securely to your tools. The creator never sees your data.

    About this skill

    Build timezone and date-boundary tests in a repo using Cursor. This skill inspects date parsing, UTC/local conversions, database filters, cron schedules, billing periods, expiry logic, reports, UI formatting, and existing tests; flags DST, off-by-one, locale, naive-date, and midnight bugs; then prepares safe test cases, small patches, and verification steps without changing production clocks or data.

    Find more skills like this on the Claude Skills Marketplace, the Codex Skills Marketplace and the Gemini Skills Marketplace, or browse All Claude Skills.

    • Cannot access live production databases or APIs. - Does not verify cloud provider timezone settings. - Accuracy depends on supplied business date semantics.

    How to use

    1. 1

      Connect your agent to the Agensi MCP

      Copy the prompt and paste it into Claude, ChatGPT, Cursor or any agent that supports MCP. It sets up the connection for you. Manual setup

    2. 2

      Sign in to Agensi

      Your agent shows a sign-in link. Sign in and click Allow.

    3. 3

      Ask for what you need

      Your agent loads this skill and uses it on your task. It always asks before buying a skill.

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    Security scan passed 3 months ago

    Permissions

    Terminal / Shell
    Read Files
    Write Files

    Permissions are limited to the active local workspace and are used to inspect user-supplied or local workspace files; create or modify bounded local fixes, tests, documentation, or review artifacts; run repository-supported local tests, checks, builds, or parsing commands. The skill package does not require bundled credentials, unrestricted external network access, or automatic production changes.

    Listed3 months ago
    Updated9 days ago

    What's inside

    Frequently Asked Questions

    It identifies risks like DST transitions, naive date parsing, off-by-one errors, and UTC/local conversion mismatches across your codebase.

    No. It creates test cases and repo patches but never touches production clocks, live databases, or billing APIs.

    Yes, it analyzes cron strings and job scheduling logic to identify risks related to server-local time versus UTC execution.