Agentic artificial intelligence (AI) startup Composio has secured $25 million in Series A funding led by Lightspeed Venture Partners, bringing its total funding to $29 million.
The round also saw participation from Guillermo Rauch (Vercel CEO), Dharmesh Shah (HubSpot CTO & Founder), Gokul Rajaram, Soham Mazumdar (Rubrik Co-founder), and institutional investors SV Angel, Blitzscaling Ventures, Operator Partners, and Agent Fund. Existing investors Elevation Capital and Together Fund also joined the round.
The company is focused on addressing what it sees as the core limitation preventing AI agents from transforming enterprise workflows—the inability to learn from experience.
“You can spend hundreds of hours building LLM tools, tweaking prompts, and refining instructions, but you hit a wall,” said Soham Ganatra, CEO of Composio. “These models don’t get better at their jobs the way a human employee would. They can’t build context, learn from mistakes, or develop the subtle understanding that makes human workers invaluable. We’re solving this at the infrastructure level.”
Composio’s platform includes a shared learning layer for AI agents. This allows knowledge gained by one agent—such as handling a Salesforce edge case or optimising a GitHub workflow—to be reused by others. The company says this creates a network effect, enabling all agents on the platform to improve collectively.
Founded two years ago by Ganatra and Karan Vaidya, Composio began building its infrastructure before the rise of current AI agent hype. The company focused on problems such as multi-agent coordination, authentication across enterprise tools, and scalability. A core innovation has been a reinforcement learning layer that allows agents to build intuition from experience.
“The challenge isn’t making AI smarter in isolation,” Ganatra added. “It’s giving AI the ability to accumulate practical knowledge the way humans do—but at the scale and speed only software can achieve.”
The platform has gained traction among developers and startups. Over 100,000 developers have joined, with more than 200 companies—including Glean—using Composio.
Early adopters include startups from recent Y Combinator batches such as April, OpenNote, Airweave, Den, and Dash. AI products like Context and Altera have also built on the platform.
A common use case is reducing the time it takes to build and ship agents. Instead of creating new integrations from scratch, developers can access pre-built capabilities from Composio’s library of learned behaviours.
“What excites us about Composio is that they’re not just solving today’s integration problems,” said Raviraj Jain of Lightspeed Venture Partners. “They’re building the foundation for AI agents to become genuinely useful by learning from experience at scale. This is the missing piece between impressive demos and transformative deployments.”
The funding will be used to further develop Composio’s learning infrastructure. The platform integrates with frameworks like MCP, LangChain, Vercel AI SDK, and OpenAI Agents, allowing developers to adopt its learning capabilities across different tech stacks.
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