1,593 tools · Links checked Oct 20, 2026

AI Agents Directory: the agent tools actually worth trying.

A curated, link-checked directory of agent tools for builders and everyday users, sorted by what they actually do.

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✨ Free AI Image Generator

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FLUX.1 [schnell], Apache 2.0 · free to use · keep it SFW

Free AI tools built by AgentScout

Calculators and generators that run in your browser. No sign-up. All free tools →

AI API Cost Calculator

Free

Estimate what an AI model costs per request, per day and per month. Compare GPT, Claude, Gemini and Grok API prices side by side.

AI Token Counter

Free

Paste text and get an instant estimate of how many tokens it uses, plus words, characters and what it costs as input.

AI Prompt Builder

Free

Fill in a few fields and get a clear, well-structured prompt for ChatGPT, Claude, Gemini or Grok. Copy it in one click.

AI Agent Setup Generator

Free

Generate starter config files and system prompts for Claude Code, Codex, Cursor, CrewAI, LangChain and the OpenAI Agents SDK.

MCP Config Builder

Free

Add MCP servers once and get ready-to-paste config for Claude Desktop, Claude Code, Cursor and VS Code.

llms.txt Generator

Free

Fill in your site's name, summary and key links and get a valid llms.txt file that AI assistants can read.

AI Tool Schema Builder

Free

Define a function once and export the tool-calling JSON schema for OpenAI, Anthropic Claude and Google Gemini.

AI Agent Run Cost Estimator

Free

Estimate what one multi-step agent task costs: steps, tool results, growing context, caching and retries, then per day and per month across 33 models.

AGENTS.md & Rules File Generator

Free

Write your project rules once and export AGENTS.md, CLAUDE.md, GEMINI.md, Cursor rules and GitHub Copilot instructions.

AI Agent Stack Builder

Free

Pick your goal, skill level and budget and get a recommended AI agent stack from the AgentScout directory, with a shareable stack card.

System Prompt Linter

Free

Paste a system prompt and get a score out of 10 with checks for role, task, output format, rules, conflicts, vague wording and prompt-injection defenses.

Context Window Planner

Free

See how much of your model's context window the system prompt, tools, documents, history and output reserve use, as one clear bar.

Open-Source License Checker for AI Tools

Free

Pick a license (MIT, Apache, GPL, AGPL, ELv2, BSL and more) and see if you can use it commercially, self-host it or offer it as a service.

Build vs Buy AI Agent Calculator

Free

Compare self-hosting an open-source AI agent with paying for a hosted tool over 12 to 36 months, with the break-even month.

MCP Server Picker

Free

Tick the apps you use, like GitHub, Slack, Notion or Postgres, and find matching MCP servers in the AgentScout directory.

JSON Output Schema Validator

Free

Paste a JSON Schema and a model's output to see if it passes, with exact error paths and OpenAI strict-mode checks.

AI Tool Comparison Card Maker

Free

Pick 2 or 3 AI tools from the directory and get a side-by-side comparison and a shareable image card.

AI Agent Readiness Checker

Free

Enter a website and see how ready it is for AI agents and AI search: llms.txt, robots.txt AI crawler rules, sitemap, structured data, MCP and agent files.

See all free tools →

Free

All 18 calculators and generators in one place. No sign-up.

Recently added

See all new tools →

1,593 tools · 980 new this week · every link checked

RoverLead logo

RoverLead

RoverLead is an AI SDR for LinkedIn. Its signal agents watch engagement around your niche, competitors and…

NewAdded
OpenCity Record logo

OpenCity Record

OpenCity Record makes US city council and planning meetings searchable in plain language: what was decided,…

NewAdded
Dodaios logo

Dodaios

Open-source desktop agent OS for Windows, macOS and Linux (formerly Personal Jarvis): talk to it and it runs…

NewAdded
ai-memory logo

ai-memory

Fabio Akita's open-source long-term memory layer for coding agents: one Rust binary that keeps plain-markdown…

NewAdded
Second Brain logo

Second Brain

A free, open-source shared memory that runs in your own Cloudflare account, so Claude, ChatGPT, Cursor and…

NewAdded
luvus logo

luvus

Mission control for AI coding agents: run, watch, resume and orchestrate Claude Code, Codex, Copilot,…

NewAdded
CozyClay logo

CozyClay

Free browser-based 3D previs software: block a scene, pose characters and author camera moves and cuts, then…

NewAdded
KiwiFS logo

KiwiFS

A markdown filesystem for agents and teams: searchable, structured and versioned knowledge in a single binary…

NewAdded
projectmem logo

projectmem

A local-first memory layer for coding agents that records issues, attempts, fixes and decisions and warns…

NewAdded
hax logo

hax

A minimalist terminal coding agent shipped as a single native C binary using a few MB of RAM, with…

NewAdded
AgentConnect logo

AgentConnect

An open-source, multi-agent workspace where you @-mention any agent wherever work happens, and agents work…

NewAdded
AutoScientists logo

AutoScientists

A research system from Harvard's Zitnik lab where teams of LLM agents self-organize to plan and run…

NewAdded

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