Klaviyo Contact List CSV Preflight

    1

    Find missing identifiers, duplicate emails/phones and malformed rows in a local Klaviyo CSV before manual import. Get row-numbered JSON findings without contact values.

    $5

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    Klaviyo Contact List CSV Preflight

    Example session with this skill installed

    Create the synthetic demo file below in a private local folder; it is an additional example, not a bundled filename. Run klaviyo-list-csv-preflight examples/listing-review.csv after the README installation and return the full JSON receipt. Do not edit the input, access an account or import/upload anything.

    Email,Phone Number
first@example.invalid,
first@example.invalid,
    • Read your context and instructions
    • Compiled the klaviyo contact list

    Synthetic input, measured local CLI result

    Executed using the unchanged buyer package v0.1.4 on Windows with Python 3.14. This demonstrates the installed CLI, not automatic agent activation or a native platform test. Input uses UTF-8 and LF newlines; a different save encoding/line ending changes the hash.

    Complete JSON receipt

    {
  "extra_findings": 0,
  "findings": [
    {
      "code": "DUPLICATE_EMAIL",
      "row": 3
    }
  ],
  "rows": 2,
  "sha256": "fd6b89a899afc380dd2930ccf61a4e43b5f0a7fe40050b19a57875875010f2b4",
  "status": "REVIEW"
}

    Interpretation and next step

    The email in logical row 3 duplicates an earlier email. Review the source records and consent separately; this checker neither merges contacts nor validates inboxes.

    The CLI returned exit code 1 (REVIEW). A separate normal synthetic input returned exit code 0 (PASS_CHECKED_RULES) in the same exact-package replay. A local pass covers only the documented rules; complete the platform's own review before import/upload.

    The JSON above is the complete terminal output. No CSV export, account connection, correction or upload was produced by the checker.

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

    About this skill

    Before you install: Python 3.11+ and a trusted private local working folder. This is a downloadable source ZIP with a Python CLI and Agent Skill instructions, not a hosted service or one-click desktop app. A terminal (or a compatible agent allowed to run local Python) is required. Prepare trusted pip, setuptools>=68 and wheel for source installation. The core CLI uses only the Python standard library. No connected service account or API key is needed for the local checks; AI assistant/provider fees are separate. Optional local MCP requires its separately installed trusted SDK and local root configuration; it is not required for CLI use.

    How to use: Extract the whole ZIP, install from its folder using the README command, and run klaviyo-list-csv-preflight <local-file>. Review the JSON receipt, correct any issue yourself in a separate working copy, then rerun before the platform's own manual review. The checker does not change or import your input. Its receipt is printed to the terminal; save it separately if you need a report file.

    Short description: Find missing identifiers, duplicate emails/phones and malformed rows in a local Klaviyo CSV before manual import. Get row-numbered JSON findings without contact values.

    Buyer receives: Python 3.11+ CLI, optional local MCP adapter, Agent Skill instructions, sample CSV and guide. JSON receipt has codes/row numbers and SHA-256.

    Limits: 50 MB/200,000 rows; at most 256 columns per record, 65,536 header characters and 1,000,000 characters per data record. Does not verify inboxes, actual marketing consent, account flows, deliverability or Klaviyo acceptance. The built-in Klaviyo import is free; integration tools are alternatives.

    Compatibility evidence: Measured CLI examples used Windows and Python 3.14. Agent activation and every host/version combination have not each been tested.

    How to use

    Skills on Agensi run inside your AI agent. Copy the prompt, paste it into your agent, and it connects to Agensi and installs this skill for you. If a payment is needed, your agent shows it to you first.

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    Verified clean 16 days ago

    • Passed all security checks, Safe to install

    Requires

    Python

    Listed16 days ago

    What's inside

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