Picks · @emircitakFree tools for building AI agents

Agent frameworks and toolkits you can start with for nothing.

by @emircitak

12 products. Hand-picked, as of Aug 16.

This week

No changes. Same list as last week.

  • 01

    Free plan on their own pricing page; paid starts at $1,999/month.

    An open-source Python agent runtime, installed with one pip command, with a local cache that skips repeat LLM calls — pitched as a lighter alternative to LangGraph for developers.

  • 02

    You can start without paying. Paid tier: $100 per user/month.

    An open-source workspace for building and connecting AI agent workflows to 1,000+ integrations and LLMs; a developer/maker tool rather than a no-code product.

  • 03

    A free tier they state themselves, not one we assumed.

    An API that pauses your AI agent at risky decisions like refunds, routes the escalation to the right human under an SLA, and resumes the workflow once approved. Built for developers wiring human oversight into agents.

  • 04

    Free plan on their own pricing page.

    An AI agent that consolidates multiple separate tools into one interface, for people tired of switching between many apps instead of using each one directly.

  • 05

    You can start without paying.

    The Control Plane and Network Layer For AI Agents

  • 06

    A free tier they state themselves, not one we assumed.

    A marketplace to rent pre-built autonomous AI agents for specific tasks instead of manually configuring tools like Claude Code or Codex — despite the 'app store' framing, not a mobile app.

  • 07
    Vaayashipped 4d ago

    Free plan on their own pricing page.

    One connector that plugs your AI agent (Claude, ChatGPT, Cursor or Codex) into outside tools for building demos, running outreach and researching your market.

  • 08

    You can start without paying.

    An image-generation API and MCP server with tiered model quality and built-in billing for AI agents — a developer tool, not a consumer app.

  • 09
    QVeris AIshipped 1d ago

    A free tier they state themselves, not one we assumed.

    Capability routing for AI agents — 10,000+ tools, one call.

  • 10

    Free plan on their own pricing page; paid starts at $100 / month.

    A platform for designing, evaluating, deploying, and governing AI agents as reusable units, for teams building production AI agent systems instead of rebuilding the same plumbing from scratch each time.

  • 11

    You can start without paying. Paid tier: $19/month.

    A hosted memory and context layer for AI agents with 15ms retrieval and support for 18 agent frameworks. The client SDK is open-source, but the core service is not.

  • 12

    A free tier they state themselves, not one we assumed.

    An @cai.com identity bundling email, wallet and vault, plus an MCP server so AI agents can connect to it — thin public detail beyond the tagline.