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Promptr for AI
The context manager and prompt library for marketing teams
LLMs are getting better at memory, but they still can't decide which context matters for each conversation. Promptr for AI is the working memory layer that sits above ChatGPT, Claude, and Gemini: you choose exactly which brand voices, guidelines, and templates to inject, per conversation, per task. And if you work with a team, you can onboard them in minutes. Everyone gets the same full context library inside their LLM of choice, always up to date - at a fraction of the LLM costs.
We built Promptr becausewe were frustrated with something that should be simple: sharing context with our team when working with AI.
Our workflow looked like this:
Someone writes a great brand voice doc for a client as a solid prompt, drops it in Slack, everyone copies it into their own ChatGPT or Claude custom instructions.
Then someone updates it, posts the new version, half the team misses it.
Multiply that by several clients and it becomes a mess fast.
And if you wanted proper shared memory? You'd need a team plan on each platform. Per seat. Per LLM. That adds up quickly when you're a small team using multiple tools. And let's be honest, we all use multiple tools because different LLMs are better at different things.
So we did what product people do: we built something.
Promptr is a context manager and prompt library that sits above your LLMs. You save your brand voices, guidelines, templates, and prompts in one place, then inject exactly the ones you need into any AI conversation through a browser extension. Your whole team works from the same library, always the latest version, across ChatGPT, Claude, and Gemini.
We think the sweet spot is marketing and content teams, especially agencies where you're constantly switching between clients and voices. But honestly, it works for any individual or team that's tired of their context being trapped inside one platform.
A few things we're proud of:
🎨 The web app turned out really nice. Creating and organizing contexts feels effortless, and sharing with your team is just as smooth.
🧩 Browser extensions are live for Chrome and Firefox, with Safari and Edge coming soon.
🆓 Free forever plan for solopreneurs, freelancers. No limits on spaces or items.
💰 Team plan at a flat rate, regardless of team size. No per-seat pricing. We think that model is broken.
Would love to hear what you think, and if you have ideas for what we should build next, we're all ears!
Hey everyone 👋
I am Stefan, one of the builders of Promptr.
We built Promptr because we were frustrated with something that should be simple: sharing context with our team when working with AI.
Our workflow looked like this:
Someone writes a great brand voice doc for a client as a solid prompt, drops it in Slack, everyone copies it into their own ChatGPT or Claude custom instructions.
Then someone updates it, posts the new version, half the team misses it.
Multiply that by several clients and it becomes a mess fast.
And if you wanted proper shared memory? You'd need a team plan on each platform. Per seat. Per LLM. That adds up quickly when you're a small team using multiple tools. And let's be honest, we all use multiple tools because different LLMs are better at different things.
So we did what product people do: we built something.
Promptr is a context manager and prompt library that sits above your LLMs. You save your brand voices, guidelines, templates, and prompts in one place, then inject exactly the ones you need into any AI conversation through a browser extension. Your whole team works from the same library, always the latest version, across ChatGPT, Claude, and Gemini.
We think the sweet spot is marketing and content teams, especially agencies where you're constantly switching between clients and voices. But honestly, it works for any individual or team that's tired of their context being trapped inside one platform.
A few things we're proud of:
🎨 The web app turned out really nice. Creating and organizing contexts feels effortless, and sharing with your team is just as smooth.
🧩 Browser extensions are live for Chrome and Firefox, with Safari and Edge coming soon.
🆓 Free forever plan for solopreneurs, freelancers. No limits on spaces or items.
💰 Team plan at a flat rate, regardless of team size. No per-seat pricing. We think that model is broken.
Would love to hear what you think, and if you have ideas for what we should build next, we're all ears!