Scalekit Raises $5.5 Million to Launch Authentication Stack for Agent-Based Applications

San Francisco-based Scalekit has raised $5.5 million in seed funding as it unveils a new authentication platform designed for agent-driven applications. 

The round was led by Together Fund and Z47, with participation from angel investors Adam Frankl, Oliver Jay, and Jagadeesh Kunda.

For years, software systems assumed people were the ones logging in. That assumption no longer holds. With the rise of agent-driven applications, systems now need to confirm not only who a user is, but also which agents are acting on their behalf, what permissions they hold, and how long those permissions last. Without proper controls, developers risk either over-privileging agents or building fragile workarounds.

Scalekit’s co-founder and CEO, Satya Devarakonda, said, “For years, software focused on blocking bots. Now business apps must let authenticated agents in and decide exactly what data they can read or write. Scalekit sits at that intersection of verifying every agent’s identity and enforcing precise, least-privilege access through a single drop-in toolkit.”

The company’s toolkit provides secure identity management for agents interacting with business software. It secures both incoming authentication for Model Context Protocol (MCP) servers and outgoing agent actions to third-party platforms such as Gmail, Slack, HubSpot, and Notion. 

Developers can integrate features like an OAuth 2.1 authorisation server, encrypted token vaults, and a tool-calling layer without the need for heavy refactoring.

Ravi Madabhushi, Scalekit’s co-founder and CTO, spoke on the team’s motivation: “After scaling auth for 50,000 businesses at Freshworks, we saw the next challenge coming: agent identities that live in code, not in user directories. Scalekit delivers short-lived scoped tokens and plug-in tooling that make agentic workflows secure.”

Industry leaders see this shift as critical. Together Fund’s Founding Partner, Girish Mathrubootham, said: “AI agents are emerging as first-class users of business software, and current identity stacks can’t keep up. Scalekit spotted the shift early and built the missing agent identity infrastructure. We believe that foundation will power the next billion agent identities.”

Beyond agent authentication, Scalekit also provides traditional modules for human users, including email magic links, OTPs, single sign-on, and machine-to-machine tokens. Its modular design allows teams to adopt only what they need, enabling faster rollout of new features.

Several companies already rely on Scalekit to support their applications. SiftHub’s head of technology, Harsh Vakharia, noted: “We needed auth that just works so we could focus on our core AI features. Scalekit eliminated months of auth complexity and let us ship in a couple of weeks.”

Fello’s CTO, Suman Varanasi, added: “We plugged in Scalekit’s passwordless auth module without any refactoring. That lego-style flexibility got us live in two weeks.”

Scalekit plans to expand its offering with deeper agent support, stronger tool integrations, granular audit logs, and prebuilt connectors for over a thousand external applications.

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