HARPA AI
Hybrid agent + chat extension with website monitoring, summarisation, and natural-language automation.
HARPA AI is a hybrid agent + chat extension with website monitoring, summarisation, and natural-language automation. Supports multiple AI model providers including OpenAI GPT, Anthropic Claude, and Google Gemini through a BYOK approach.
About HARPA AI
HARPA AI is a browser extension that combines an AI agent and chat interface to automate web tasks, monitor pages, and summarize.
Its distinctive combination: it runs web automation like page interaction and data extraction, monitors websites to detect page changes and trigger AI-driven actions or summaries, and works across multiple model providers — OpenAI GPT, Anthropic Claude, and Google Gemini — through a bring-your-own-key approach. It installs as an extension that sits inside your browsing workflow, with no separate application.
It suits people who want AI automation and monitoring where they already browse and who are willing to supply their own API keys. It's a weaker fit if you'd rather not obtain and manage third-party API keys, since it relies on BYOK, if you hit the free tier's limits on AI queries and advanced automation, or if you need to work outside the browser — its functionality is confined to that environment and depends on web page accessibility.
Among Browser Extensions, HARPA's angle is pairing agent-style automation and page monitoring with your choice of model provider rather than locking you to one.
Sources: https://harpa.ai, this listing
What it does well
- Supports multiple AI model providers including OpenAI GPT, Anthropic Claude, and Google Gemini through a BYOK approach.
- Functions as a hybrid agent and chat interface that can perform web automation tasks such as page interaction and data extraction.
- Includes website monitoring capabilities that can detect page changes and trigger AI-driven actions or summaries.
- Available as a browser extension that integrates directly into the user's web browsing workflow without requiring a separate application.
Where it falls short
- Free tier imposes usage limits on AI queries and advanced automation features.
- Relies on a BYOK model, requiring users to obtain and manage their own API keys from third-party providers.
- Functionality is confined to the browser environment and depends on web page accessibility.
Tagged
- Bring Your Own Key
- Supports Claude
- Supports GPT
- Supports Gemini
- Web-based
- Agentic Mode
- Freemium
Compared with similar things
Picked by shared tags inside the Browser Extensions.
- 01Freemium →n8n
Open-source workflow automation with native LLM nodes — self-host on your own infrastructure.
- 02Freemium →OpenRouter
Unified API gateway for 200+ LLMs across providers with usage-based billing on a single account.
- 03Freemium →LlamaIndex
Data framework for connecting LLMs to private data with chunking, indexing, and retrieval primitives.
- 04Freemium →LangChain
Most-used framework for building LLM applications with retrieval, agents, and chains.
- 05Freemium →Monica
All-in-one AI assistant browser extension — chat, summarise, rewrite, translate, and answer on any site.
- 06Freemium →TypingMind
Power-user chat client for GPT, Claude, and Gemini with prompts library, plugins, and conversation forking.
Related reading
- How to Validate Your AI App Idea Before You Build It
The expensive mistake in the vibe-coding era isn't building the app — it's building the wrong one. You validate an AI app idea by talking to about eight people in your target market before you build, and listening for the single capability they all wish existed. That's your wedge. Higgsfield's founder did exactly that on the way to a ~$200M run-rate.
Read guide → - How to Launch Your AI App on Product Hunt
Launch on Product Hunt by preparing for a few weeks: build genuine account activity, line up your assets and a supporter list, and ship at 12:01 AM Pacific (the daily reset) on a weekday. Reply to every comment all day, never ask for upvotes (say 'check it out'), and keep working the week after — that's where most of the lasting value is.
Read guide → - How to Get Your AI App Cited by ChatGPT and Perplexity
To get cited by ChatGPT and Perplexity, be the clearest answer in several places at once. Publish answer-first pages with extractable facts, get listed on directories and review sites the engines crawl, and build consistent mentions across Reddit, YouTube, and your own site. Perplexity tends to favour recent content; ChatGPT appears to weight agreement across sources.
Read guide →
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</a>Frequently asked questions
- What is HARPA AI?
- HARPA AI is a hybrid agent + chat extension with website monitoring, summarisation, and natural-language automation.
- Is HARPA AI free?
- HARPA AI offers a free tier and paid plans with higher limits or premium features.
- What platforms does HARPA AI support?
- HARPA AI runs on web.
- What category does HARPA AI belong to?
- HARPA AI is in the Browser Extensions category — AI-powered Chrome, Arc, Edge, Firefox, and Safari extensions — overlays, sidebars, content augmentation.
- What are the downsides of HARPA AI?
- Free tier imposes usage limits on AI queries and advanced automation features. Relies on a BYOK model, requiring users to obtain and manage their own API keys from third-party providers. Functionality is confined to the browser environment and depends on web page accessibility.