AI Prompt Marketplace：如何購買和銷售提示詞（2026）

A text file, and nothing else. There is no app to log into and no seat to provision. Listings come in four shapes: a single prompt for one task, a prompt pack covering a workflow, a skill file (a SKILL.md document Claude loads once and applies across every conversation), or an agent, which is a skill file plus the supporting files it needs to run a multi-step job. On KissMySkills that maps to 60+ prompt packs at $9, 1,900+ skill files at $19, and 90+ agents at $39.

A Claude skill file installs one way: the download is a ZIP with SKILL.md at the root of the archive, and you upload it in the Claude desktop app under Customize then Skills, then toggle it on. Check the file sits at the root and not inside a nested folder, because that is the most common upload failure. Skills need code execution enabled, under Settings then Capabilities. Anthropic's help centre currently lists Skills on Free, Pro, Max, Team and Enterprise, while its Academy tutorial lists Pro, Max, Team and Enterprise, so if you are on the free plan check Settings then Capabilities for your own account rather than trusting either page. Where the Skills menu is not available, or in ChatGPT or Gemini, the fallback is to open the SKILL.md file, copy its contents, and paste them into custom instructions.

Buy when the prompt carries domain knowledge you do not have, such as copywriting frameworks or a month-end close sequence, because you would need to learn the discipline before you could write the prompt at all. Write your own when the task depends on facts specific to your business: nobody sells a prompt that knows your pricing tiers, your customer list, or your tone. A bought pack supplies structure; you still supply the facts. Treat any specific claim about hours saved as a guess, since it depends entirely on how good you already are at writing prompts.

Check four things. Is a specific model named, since Claude, GPT and Gemini respond differently to identical instructions and 'works with any AI' usually means it was tuned for none. Is there a screenshot of real output rather than a description of output. When was the file last updated relative to major model releases, because prompts degrade silently when a new model ships. And is there a refund window, which is the only trial you get for a text file. KissMySkills runs 30 days; many sellers offer nothing.

Four places. Prompts rot silently when a new model ships, degrading with no error message. You buy blind, since a text file cannot be trialled and the refund policy is the entire guarantee. Discovery is the bottleneck on large marketplaces, so most listings never sell. And a prompt cannot supply judgment: a CFO skill will structure a board narrative but will not know your churn spike was one enterprise customer leaving, so bad inputs still produce confident, wrong output. On general-purpose marketplaces, image prompts also dominate the catalogue, which makes business prompts hard to surface.

It varies by platform and changes over time, so check the current terms before you price. As of August 2026, PromptBase's own sell page states it takes 20% on marketplace sales and 0% when a buyer arrives through the seller's own link. When pricing, compare against what the pack replaces for the buyer, such as an hour of a freelancer's time, rather than against the weeks you spent building it.