Built for agents, not humans
A curated list of infrastructure and tools designed from the ground up to work with AI agents — not retrofitted from legacy SaaS.
AgentMail
EmailEmail inboxes built specifically for AI agents. Each agent gets its own address, can send and receive programmatically, and integrates with any LLM workflow. YC-backed, $6M seed.
agentmail.to →Browserbase
BrowserCloud browser infrastructure for AI agents. Runs headless Chromium at scale — agents can navigate the web, fill forms, scrape data, and take screenshots without managing their own infrastructure.
browserbase.com →Composio
Integrations250+ pre-built tool integrations for AI agents — Gmail, GitHub, Slack, Notion, Salesforce, and more. Handles OAuth, manages auth state, and gives agents structured access to external services.
composio.dev →E2B
SandboxesSecure cloud sandboxes for AI-generated code execution. Agents can write, run, and iterate on code in isolated environments — without touching the host system. Open-source with a hosted option.
e2b.dev →Tavily
SearchSearch API designed for AI agents and RAG pipelines. Returns clean, structured results that LLMs can actually use — not raw HTML. Native integration with LangChain, LlamaIndex, and CrewAI.
tavily.com →Want to see your agent-first service listed here?
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