The Agent Index
The Builder Weekly · Index

The Agent Index

Infrastructure for AI agents. Tools an agent reaches for mid-workflow to do its job. Verified by the builders who use them every day.

  • Exa

    Neural web search API designed for LLMs, with semantic matching, live-crawled content, and similarity queries.

    Web Search and RetrievalREST API
    Visit →

  • Firecrawl

    Scrape any website into clean markdown or structured data with a single API call, including JS-rendered pages.

    Web Search and RetrievalREST API
    Visit →GitHub →

  • Tavily

    Search API built specifically for AI agents with grounded answers, source citations, and news search.

    Web Search and RetrievalREST API
    Visit →
Add to the list

The Agent Index is open source. The canonical list lives on GitHub, and every entry on this page is generated from that repo at build time. Contributions are welcome as pull requests. Read the rules before submitting; the bar is sharp, but the review is fast.

Submit on GitHub →Read the contribution rules
How this list gets made

Tools are added after they show up in production agent workflows or get strong signal from builders with real usage. Inclusion is the editorial judgment. There is no ranking within categories. Every tool listed has earned its place against the same criterion: can an agent complete its full lifecycle through a fully programmatic path?

How we choose tools →