--- title: "How we built Neeti our an AI assistant for NeetoCal" url: https://daily.dev/posts/how-we-built-neeti-our-an-ai-assistant-for-neetocal-qtxcwak8e source_url: https://www.bigbinary.com/blog/how-we-built-Neeti-our-ai-assistant-for-neetocal type: article source: "BigBinary" published: 2026-06-11T21:52:08.712Z updated: 2026-06-11T21:52:33.637Z tags: ["devtools", "rails", "google-gemini"] reading_time: 12 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # How we built Neeti our an AI assistant for NeetoCal **[BigBinary](https://daily.dev/sources/bigbinary)** · 12 min read · 0 upvotes · 0 comments ## Summary BigBinary built Neeti, an AI assistant for NeetoCal that answers plain-English scheduling questions by calling a fixed set of read-only Ruby tools rather than letting the model write raw SQL. The post covers the tool-based architecture (using RubyLLM and Gemini), a real bug where the model returned a wrong count because it used a paginated listing tool instead of a dedicated counting tool, and performance tuning by lowering Gemini's thinking effort from high to low — which cut response time by ~33% with no quality loss. Key design principles: the model never touches the database directly, all tools are read-only, every answer exposes a trace of which tools ran, and sampling vs. counting are strictly separated. The pattern is designed to generalize across all Neeto products. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Gemini API in Ruby: Building AI Agents Without an SDK](https://daily.dev/posts/gemini-api-in-ruby-building-ai-agents-without-an-sdk-7psccge0x) · Ruby Flow · 1 upvotes · 0 comments - [Building an AI agent inside a 7-year old Rails application](https://daily.dev/posts/building-an-ai-agent-inside-a-7-year-old-rails-application-wcc3vvswg) · Ruby Flow · 1 upvotes · 0 comments - [How to Build an AI Feature With Gemini: A Practical Guide to Prompt Engineering for Developers](https://daily.dev/posts/how-to-build-an-ai-feature-with-gemini-a-practical-guide-to-prompt-engineering-for-developers-je89vebi7) · freeCodeCamp · 1 upvotes · 0 comments --- Tags: [#devtools](https://daily.dev/tags/devtools), [#rails](https://daily.dev/tags/rails), [#google-gemini](https://daily.dev/tags/google-gemini) [View this post on daily.dev](https://daily.dev/posts/how-we-built-neeti-our-an-ai-assistant-for-neetocal-qtxcwak8e)