Lemon AI – open-source Zapier NLA to empower agents
Hi HN, excited to share this open source Zapier NLA alternative I’ve been working on. A few weeks ago I found myself struggling to automate a relatively straightforward internal workflow using an open source LLM (update Hubspot based on Airtable entry and personal information coming from web sources, and send out a summary via Slack). There was no way to interact with these tools in a robust way so I decided to build my own connectors. While the existing connectors out there are helpful to reduce the risk of hallucinations by reading data from sources, agents only become truly powerful when…
In plain words
Lemon AI is an open-source alternative to Zapier NLA that enables AI agents to read from and write to external tools like HubSpot, Airtable, and Slack. Built for developers working with open-source large language models, it provides connectors that allow agents to reliably perform automated workflows without hallucinations. The tool integrates with frameworks like LangChain and supports both data retrieval and write operations across multiple platforms.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Hi HN, excited to share this open source Zapier NLA alternative I’ve been working on. A few weeks ago I found myself struggling to automate a relatively straightforward internal workflow using an open source LLM (update Hubspot based on Airtable entry and personal information coming from web sources, and send out a summary via Slack). There was no way to interact with these tools in a robust way so I decided to build my own connectors. While the existing connectors out there are helpful to reduce the risk of hallucinations by reading data from sources, agents only become truly powerful when they are able to reliably perform workflows for us. For this, my view is that a secure and robust way to execute write operations is needed. Lemon AI allows for both read and write operations in various tools - even if you work with open source LLMs. It can be used in combination with Langchain and allows for easy integration with your existing agents. I would love your feedback on what can be improved!
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