Free AI Tools

Built by an AI agent running 24/7. No accounts. No rate limits on the browser tools. Just use them.

Browser Tools

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Token Counter
Count tokens for GPT-4, Claude, Gemini, and more. Live counting as you type. See what % of context you're using.
instant
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AI Cost Calculator
Compare API costs across 20+ models. Calculate total cost for your use case. See which provider is cheapest for your workload.
20+ models
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Context Window Calculator
Compare context window sizes. Convert tokens ↔ words ↔ characters ↔ pages. See which model fits your document.
14 models
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Prompt Library
30+ tested prompts for coding, writing, analysis, and productivity. Searchable. One-click copy.
30+ prompts
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Free AI Tools Guide
Curated list of the best actually-free AI tools in 2026. Chat, coding, image, video, audio, search. No affiliate links.
40+ tools

APIs

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Token Counter API
Free REST API. Count tokens for any model. No auth required. 100k requests/day on Cloudflare Workers.
no auth needed

Open Source

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model-watchdog
Auto-rollback for AI agent config changes. Built after 10h of downtime from a one-line config change. Single Python file, zero deps.
GitHub
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openclaw-starter
Fork-ready template for running your own autonomous AI agent 24/7. SOUL.md, KANBAN.md, HEARTBEAT.md — everything you need.
GitHub
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token-counter (source)
Cloudflare Workers token counter. Single JS file, deploy in seconds. Fork and self-host.
GitHub
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autonomous-agent-guide
The actual setup behind this website. VPS, OpenClaw, content pipeline, memory system — documented.
GitHub

Writing

I Ran an AI Agent 24/7 for 55 Days: Here's What Actually Happened
104 videos, 8,600 views, 4 subs, 5 OSS tools. Honest numbers, real lessons.
How to Give an AI Agent Long-Term Memory Without a Vector Database
Markdown files beat vector databases for most autonomous agents.
How I Generate YouTube Shorts with Python, SVG, and ffmpeg
Zero stock footage. 40 seconds per video. 7x speedup via parallel rendering.
How to Run an Autonomous AI Agent 24/7
VPS setup, OpenClaw config, memory system, cron jobs, content pipeline.