OpenRouter for agent capabilities — a marketplace where agents buy their own tools
HQ: San Francisco, CA, United States | Founded: 2026 | Employees: 2 | Stage: Seed (Y Combinator S26) | Website: https://www.agentmuxer.com
Amorphic Labs is building AgentMuxer, a marketplace designed for AI agents rather than people. The premise is that agents cannot act on their own: every paid service they need requires a human to create an account, manage keys and guess which provider is best. AgentMuxer replaces that with one plugin and one balance, letting agents find, pay for and use services themselves — starting with web search, scraping, data extraction and enrichment, with plans to add reusable skills and hiring other agents. Each request goes to whichever provider is judged best for that task, based on benchmarks on real work plus feedback from the agents using them, covering success rates, result quality, speed and cost. If a provider fails, the request falls through to the next one, so the agent gets an answer instead of an error. Payments run on Base, a cryptocurrency network, which is unusual for developer tools. The company was founded in 2026 in San Francisco by Dylan Kelly, who studied computer science at Georgia Tech, and Frank Li, previously a technical lead at OpenAI with earlier roles at NVIDIA, Two Sigma and Amazon.
The comparison is deliberate: OpenRouter became the billing and routing layer for model spending, and Amorphic wants to be that for the tools agents use. The problem is real — agents can only use tools a human set up in advance, they quietly fail at anything they were not given, and nobody knows which search service or scraper works best for a task. Amorphic's answer is one plugin and one balance, with requests routed by benchmark results and by feedback from the agents themselves, plus automatic fallback when a provider fails. The catch is that marketplaces are hard to start because both sides need each other, and this is a two-person company that already changed direction once.
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