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A free identity-registration platform pre-registering ".agent" domain names ahead of an ICANN application.
Watch out · Pre-registration only; the TLD itself is still pending ICANN approval.
Free
What to know▼
How it works
Lets builders pre-register a .agent domain name for free and get a shareable identity card, ahead of an ICANN application for the [.agent] top-level domain.
Pricing
Free.
Watch out
Pre-registration only; the TLD itself is still pending ICANN approval.
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One connector that plugs your AI agent (Claude, ChatGPT, Cursor or Codex) into outside tools for building demos, running outreach and researching your market.
FreeNo subscription
What to know▼
How it works
A single connector that plugs into AI agents in Claude, ChatGPT, Cursor or Codex, sitting between the agent and paid outside services (web search, scraping, contact enrichment, image/video generation, email, phone calls, code sandboxes) so the agent can call them without you creating separate vendor accounts or managing API keys.
What's different
You pay per successful call in cents rather than maintaining multiple separate subscriptions; failed calls cost nothing.
Pricing
Starts with free credits, no card required, then pay-per-call with no subscription.
Best for
Developers and teams building AI agent workflows who want their agent to reach outside tools (outreach, research, demos) without managing each vendor integration separately.
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A free academic-paper search API over 236M papers with an MCP endpoint, built so AI agents like Claude Code can do literature research without hitting rate limits.
FreeNo sign-up
What to know▼
How it works
A hybrid search engine over the Semantic Scholar corpus — 236M papers in the keyword index, 146M with dense vectors — fused with RRF and reranked by a cross-encoder, with a plain JSON API and a native MCP endpoint.
What's different
Built specifically so AI agents like Claude Code can run literature research without hitting the rate limits that other academic APIs impose.
Pricing
Free web search with no signup.
Best for
AI agents and developers doing deep academic literature research.
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A Stack-Overflow-style Q&A site built so AI coding agents can query and post directly via an MCP server, with client-side secret scanning to keep credentials out of your posts.
Free
What to know▼
How it works
A Stack Overflow-style Q&A site built for AI coding agents to query and post directly through an MCP server, with DNS-based discovery (SVCB/HTTPS records), an Agent Skills index, and OAuth/OIDC authentication for agents. Includes a client-side secret scanner and end-to-end encryption.
What's different
Built specifically for AI agents to interact with directly via MCP and DNS discovery, rather than being scraped.
Pricing
Free, runs on Cloudflare Workers + D1.
Best for
Developers and AI coding agents that need a Q&A knowledge base they can query and post to programmatically.
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A free, keyless MCP database of verified step-by-step fixes and documented failure modes (like Stripe webhooks breaking) that AI agents can query before attempting a task.
Free
What to know▼
How it works
An MCP server that AI agents query before attempting a task; it returns verified 'routes' — step sequences plus documented failure modes (e.g. express.json breaking Stripe webhooks, Jira v3 wanting ADF, QuickBooks rotating refresh tokens) contributed by agents and humans who completed the task, with trust built from attestations. One MCP install works with Claude, OpenAI, LangChain, and CrewAI.
What's different
Reads are free and keyless, and it publishes 8,700+ routes across 2,100+ domains with live metrics.
Pricing
Reads are free and keyless.
Best for
Developers running AI agents that repeatedly hit the same known integration failures and want documented fixes up front.
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Managed cloud hosting to deploy autonomous AI agents (like OpenClaw) in under 60 seconds, with several frontier models included free.
FreeNothing to installOpen source
What to know▼
How it works
Deploys autonomous AI agents like OpenClaw or Hermes to managed cloud hosting in under 60 seconds, connecting to Telegram, WhatsApp, Slack, Discord, Signal, and iMessage; includes a browser-based terminal.
What's different
Handles container security, auto-updates, monitoring, and crash recovery instead of a raw Linux VPS.
Pricing
Frontier models (GPT-5.4, GPT-5.3, Mistral Large 3, Kimi K2.5, Deepseek V3.2) included free for a limited time; plans start at $2.99/month.
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Sell your AI workflow. Run someone else's.
Free
What to know▼
How it works
A marketplace for 'flows' — complete AI workflows (tools, prompts, input variables, and steps in sequence) that you can package, list, and let others copy and run.
Pricing
Free to start.
Best for
AI builders who want to sell or share a packaged workflow, or copy a proven one to apply to their own project.
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A desktop AI agent living on your Windows taskbar that does web research, builds Excel/PDF reports, and runs scheduled automations, free if you supply your own NVIDIA API key.
Free
What to know▼
How it works
A desktop AI agent on the Windows taskbar that takes plain-English requests to research the web, build Excel/PDF reports into your Downloads folder, automate apps, and run scheduled jobs while you're away.
What's different
Risky actions require explicit Allow/Deny confirmation before it acts.
Pricing
Free, but you must supply your own NVIDIA API key.
Best for
Windows users who want an always-on agent handling background research and reporting tasks.
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A desktop multi-agent AI chat workspace with a large tool library covering voice and code tasks; the listing gives little detail beyond a free-to-start pitch.
Free
What to know▼
How it works
A desktop app offering an agentic multi-agent AI chat workspace with over 30 tools, plus voice and code capabilities.
