Best Free AI Agent Authentication Platforms
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Compare the Top Free AI Agent Authentication Platforms as of November 2026
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What are Free AI Agent Authentication Platforms?
AI agent authentication platforms help organizations securely identify, authenticate, authorize, and manage autonomous AI agents as they interact with enterprise applications, APIs, databases, cloud services, and other digital resources. These platforms provide identity and access management capabilities specifically designed for AI agents, enabling businesses to verify agent identities, control permissions, manage credentials, and enforce security policies across agent-driven workflows. AI agent authentication platforms often include features such as non-human identity management, machine-to-machine authentication, OAuth 2.0 and OpenID Connect integration, token management, secrets management, delegated authorization, least-privilege access controls, agent identity verification, and audit logging. Many solutions integrate with identity and access management (IAM) systems, API gateways, Model Context Protocol (MCP) servers, AI agent frameworks, cloud infrastructure, and zero trust security platforms to establish trusted communication between AI agents and enterprise systems. By providing centralized authentication and access governance for autonomous agents, these platforms help organizations prevent unauthorized access, protect sensitive information, reduce credential-related security risks, maintain regulatory compliance, and securely scale AI agent deployments. Compare and read user reviews of the best Free AI Agent Authentication platforms currently available using the table below. This list is updated regularly.
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1
Auth0
Okta
Auth0 takes a modern approach to Identity, providing secure access to any application, for any user. Safeguarding billions of login transactions each month, Auth0 delivers convenience, privacy, and security so customers can focus on innovation. Auth0 is part of Okta, The World’s Identity Company™. Auth0 lets you quickly integrate authentication and authorization for web, mobile, and legacy applications, with new Fine Grained Authorization (FGA) that goes beyond role-based access control. Authenticate users across all applications with a customized, secure, and standards-based single login. Universal Login connects users to a central authorization server. Credentials aren’t transferred across sources, which boosts security and protects against phishing and credential stuffing attacks. OAuth 2.0 recommends that only external user agents (like the browser) be used by native applications for authentication flows. Auth0’s Universal Login achieves this while enabling SSO.Starting Price: Free plan -
2
Okta
Okta
One platform, infinite ways to connect to your employees and customers. Build auth into any app. Create secure, delightful experiences quickly by offloading customer identity management to Okta. Get security, scalability, reliability, and flexibility by combining Okta’s Customer Identity products to build the stack you need. Protect and enable your employees, contractors, and partners. Secure your employees—wherever they are—with Okta’s workforce identity solutions. Get the tools to secure and automate cloud journeys, with full support for hybrid environments along the way. Companies around the world trust Okta with their workforce identity. -
3
Clerk
Clerk
Clerk is the user management and authentication platform built for developers. It provides complete solutions for sign-up, sign-in, user profiles, account switching, and multi-tenancy. Clerk integrates seamlessly with frameworks like Next.js, React, Vue, and Nuxt, offering secure APIs, prebuilt UI components, and powerful features like OAuth, SSO, and role management. With Clerk, you can skip building auth from scratch and ship production-ready authentication faster, while maintaining security, scalability, and a great user experience.Starting Price: $0 per month -
4
Descope
Descope
Descope is a drag-and-drop customer authentication and identity management platform. Our no / low code CIAM solution enables developers to easily create and customize their entire user journey using visual workflows – from authentication and authorization to MFA and federation. Descope also provides a connectors ecosystem with dozens of third-party services for use cases such as identity verification, fraud prevention, risk-based authentication, and identity orchestration. Descope is built on a scalable multi-tenant architecture with high availability that can support advanced enterprise requirements. Customers use Descope to improve their user onboarding with passwordless authentication, enhance security with MFA and step-up controls, and unify customer identities across business properties. Founded in 2022, Descope is backed by Lightspeed and GGV and is a member of the FIDO Alliance.Starting Price: $0.05 per user per month -
5
Scalekit
Scalekit
Scalekit is the MCP gateway for AI agents. It is for developers and platform teams who need an agent to call tools as the user, not through a shared service account. One endpoint reaches 600+ connectors and 35,000+ tools, including Salesforce, Gmail, Slack, Notion, HubSpot, Jira, and GitHub. Scalekit finds that user's credentials, checks permission, runs the call, and returns a clean response. Tokens stay in an AES-256 vault. It works with Anthropic, OpenAI, LangChain, Google ADK, Vercel AI, and Mastra. Run it in the Scalekit cloud (US, with EU residency available), in your VPC, or self-hosted. SOC 2 Type II and ISO 27001. A HIPAA BAA is available on Enterprise. The Free plan includes 10,000 tool calls and 10,000 trigger events a month. Growth is $99 a month for 100,000 tool calls. Enterprise pricing is custom.Starting Price: $99/month -
6
Cerbos
Cerbos
Cerbos is an authorization management platform. Teams use it to authorize every identity, govern every action and prove every decision, with fine-grained, contextual and continuous authorization across applications, gateways, workloads and AI agents. Access rules live in readable policies instead of application code, so security and product teams can change who can access what without waiting for an engineering release. Cerbos supports RBAC, ABAC, ReBAC and PBAC, reads roles and attributes from your identity provider and databases when each check runs, and checks every AI agent action against the same rules as people. Every access check is logged with the policy that applied, ready for SOC 2, ISO 27001 and HIPAA audits. Cerbos runs hosted, self-hosted or air-gapped. Utility Warehouse, 9fin, 4G Capital, VW, Human Managed, and thousands of other organizations use Cerbos in production.Starting Price: $25/month -
7
Logto
Silverhand
Logto is an Auth0 alternative designed for modern apps and SaaS products. It offers a seamless developer experience and is well-suited for individuals and growing companies. 🧑💻 Comprehensive identity solution Enables easy authentication with Logto SDKs. Supports multiple passwordless and social sign-in methods. Offers customizable UI components to match your brand. 📦 Out-of-the-box infrastructure eliminates the need for extra setup. Provides ready-to-use Management API Offers flexible connectors for customization and scaling, and is customized with SAML, OAuth, and OIDC protocols. 💻 Enterprise-ready with role-based access control (RBAC), organizations (multi-tenant apps), user management, audit logs, single sign-on (SSO), and multi-factor authentication (MFA).Starting Price: $0 -
8
Composio
Composio
Composio is a platform that enables AI agents to seamlessly interact with external tools and applications. It provides pre-built integrations with over 1,000 apps, allowing agents to execute tasks across services like Slack, Gmail, GitHub, and more. The platform handles complex processes such as authentication, tool execution, and sandboxed environments automatically. Composio supports dynamic tool selection, ensuring agents use the right tools based on user intent. It also enables secure, parallel execution of workflows in isolated environments. Developers can build agents that move beyond conversation to perform real-world actions. By simplifying integrations and execution, Composio helps turn AI agents into powerful, task-performing systems.Starting Price: $49 per month -
9
Nango
Nango
Nango is the most comprehensive product integration platform, enabling developers to ship integrations with over 300 APIs in hours. It abstracts away API specificities through pre-built integrations, developer tooling, and UI components. With Nango, you gain full control over the code and access to external APIs, allowing you to build exactly the integrations your customers need as if you were building in-house. The platform offers built-in support for all authorization types and quirks, a single interface with your own data models, and seamless UIs for best-in-class integration experiences. Developer tools are configured per API, handling pagination, rate limits, and more. Nango also provides an AI co-pilot trained on hundreds of integrations to assist in building custom solutions. For those requiring expert assistance, Nango offers access to API experts and an integrations service where Nango engineers build custom integrations for you.Starting Price: $250 per month -
10
Arcade
Arcade.dev
Arcade.dev is an AI tool-calling platform that enables AI agents to securely perform real-world actions, like sending emails, messaging, updating systems, or triggering workflows, through authenticated, user-authorized integrations. By acting as an authenticated proxy based on the OpenAI API spec, Arcade.dev lets models invoke external services (such as Gmail, Slack, GitHub, Salesforce, Notion, and more) via pre-built connectors or custom tool SDKs, managing authentication, token handling, and security seamlessly. Developers work with a unified client interface (arcadepy for Python or arcadejs for JavaScript), facilitating tool execution and authorization without burdening application logic with credentials or API specifics. It supports secure deployments in the cloud, private VPCs, or on premises, and includes a control plane for managing tools, users, permissions, and observability.Starting Price: $50 per month -
11
Google Cloud Agent Identity
Google
Google Cloud Agent Identity gives each AI agent a distinct, cryptographically attested identity and managed X.509 credentials for authenticating to Google Cloud resources as itself. Its identity and credential management APIs support agent authentication, access to tools and services, and credential management for user-delegated OAuth flows. Administrators can apply IAM controls, including principal access boundaries and service perimeters, and review audit logs that distinguish agent actions from actions performed on a user's behalf. The service supports agent workloads running on Gemini Enterprise Agent Platform Runtime (Agent Runtime), Gemini Enterprise, Cloud Run, and Google Kubernetes Engine. Agents can use its credentials to access cloud resources, external APIs, and Model Context Protocol servers. Availability and supported authentication flows depend on the host service.Starting Price: $0 -
12
Hush Security
Hush Security
Hush Security is a platform for discovering and governing AI agents and other non-human identities. It maps agent identities, credentials, permissions, tools, and infrastructure connections, helping security and identity teams assess risk and apply policy controls. The product is intended for organizations deploying AI agents and provides agent inventory, ownership attribution, activity auditing, access governance, and policy enforcement. Hush provides controls for limiting agent permissions and reducing reliance on static credentials, with visibility across agent and developer environments including Claude Code, Cursor, Codex, and Microsoft Foundry. Teams can use the platform to identify agents and credentials, review access, define scoped permissions, and monitor agent activity. Its free tier covers up to 25 protected agents, 50 access policies, and 10,000 discovered identities; paid plans support broader usage.Starting Price: $0 -
13
Hawcx
Hawcx
Hawcx is a cloud-based authentication platform for organizations securing AI agents and providing passwordless sign-in to employees and customers. For AI-agent workflows, it assigns agents identities linked to accountable people, checks each tool call against policy, routes sensitive actions for human approval, records decisions, and supports agent discovery and revocation. For workforce and customer applications, Hawcx provides device-bound, phishing-resistant sign-in with verification and additional checks based on risk. Teams can use web, mobile, and server SDKs to add passwordless authentication to apps, and enterprise workforce sign-in can federate with existing identity providers. The platform serves security and risk teams, platform and AI developers, and organizations deploying agents or building web and mobile applications that require controlled access and auditable actions.Starting Price: $0/month -
14
Stytch
Stytch
The authentication platform for developers. Onboard, authenticate, and engage your users with Stytch’s APIs. Improve security and user experience with flexible, passwordless authentication solutions. Let us build the infrastructure, so you can focus on your product. Our SDKs offer flexible templates that can be tailored to your colors, fonts, and logo, so you can easily create seamless onboarding and authentication experiences that delight users and complement your brand—without the trouble of building UI from the ground up. For even more control over your user experience, choose our direct API integration, which considers both developer and user experience to ensure fast, safe, and easy passwordless authentication flows. We make the integration quick and painless, with clear and comprehensive documentation.
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