AgentScout / Free tools

Free AI agent tools

Free tools built by AgentScout, plus 1241 free and open-source AI agent tools from our directory, grouped by category.

Looking for something specific? Try popular searches like free AI coding agents or browse AI agents by role.

Ranked picks: Best free AI agents · Best self-hosted AI agents · Most-starred open-source projects · All best lists

Free tools by role: Developers · AI engineers · Marketers · Sales teams · Customer support teams · Designers · Artists · Photographers · Filmmakers · Video editors · Musicians and producers · Researchers · Data analysts · Crypto traders · Founders and small businesses · DevOps and SRE engineers · Security engineers · Game developers · Content creators · QA engineers · Data engineers · Product managers · Students · Operations teams · Startup CTOs · Agencies · Open-source maintainers · MCP developers · Automation engineers · E-commerce teams

Featured: free from AgentScout

Unlimited Free AI Image Generator

Free

Type a prompt and get an image in seconds. No sign-up needed. Powered by FLUX.1 [schnell].

Open the image generator

Free AI tools built by AgentScout

Calculators and generators that run entirely in your browser. No sign-up, no API key, nothing sent to a server.

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.

Free and open-source tools in the directory

Included when the pricing the maker states says open source, open weights or open standard, free, a free tier or plan, or freemium. Open-source tools can still have paid cloud plans or need a paid model API key. Check each official site.

MCP servers (196) · coding (159) · frameworks (129) · personal agents (68) · browser/computer use (67) · agent infra (55) · memory & RAG (51) · research (40) · evals & observability (33) · 3D & concept art (32) · graphic design & branding (31) · film & TV production (30) · crypto (30) · security & governance (29) · photography & photo editing (29) · no-code builders (26) · image generation (25) · voice (23) · productivity (23) · video generation (22) · sandboxes & code execution (21) · music production (20) · business agents (19) · vision (15) · app builders (14) · games (14) · models & local runtimes (11) · film & TV audio (11) · sales & marketing (10) · customer support (8)

MCP servers (196)

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Coding (159)

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Frameworks (129)

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Personal agents (68)

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Browser/computer use (67)

All browser/computer use tools →

Agent infra (55)

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Memory & RAG (51)

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Research (40)

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Evals & observability (33)

All evals & observability tools →

3D & concept art (32)

All 3D & concept art tools →

Graphic design & branding (31)

All graphic design & branding tools →

Film & TV production (30)

All film & TV production tools →

Crypto (30)

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Security & governance (29)

All security & governance tools →

Photography & photo editing (29)

All photography & photo editing tools →

No-code builders (26)

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Image generation (25)

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Voice (23)

All voice tools →

Productivity (23)

All productivity tools →

Video generation (22)

All video generation tools →

Sandboxes & code execution (21)

All sandboxes & code execution tools →

Music production (20)

All music production tools →

Business agents (19)

All business agents tools →

Vision (15)

All vision tools →

App builders (14)

All app builders tools →

Games (14)

All games tools →

Models & local runtimes (11)

All models & local runtimes tools →

Film & TV audio (11)

All film & TV audio tools →

Sales & marketing (10)

All sales & marketing tools →

Customer support (8)

All customer support tools →

Facts come from our directory listings; pricing is as each maker states it and can change. Listings marked discontinued are left out. Within each category, tools are sorted by GitHub stars where known.

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