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Building a custom GPT or Claude agent for marketing reporting

This story is from 2026-10-30. It is preserved in the archive; the latest stories are on the live feed.

TL;DR A marketing reporting agent should read approved data sources, answer fixed weekly questions, and never invent numbers. On ChatGPT you build that with Custom GPT instructions, optional knowledge files and Actions that call your API. ( OpenAI GPT Actions ) On Claude you connect tools through M…

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  1. 2026-10-30 21:34 · DEV Community — AI
    Building a custom GPT or Claude agent for marketing reporting

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