The best agent auth & tool access for AI agents

User-permissioned auth layer that lets agents securely log into and act inside third-party apps that lack APIs (SSO, OAuth, 2FA) without ever storing user credentials. Best for agent builders.

MCP runtime that handles OAuth and authorized tool-calling so AI agents can act on behalf of a specific user across 7,500+ agent-optimized tools. Best for agent builders.

Auth0's identity stack for GenAI: a Token Vault that stores and refreshes third-party OAuth tokens for agents, async (CIBA) human approvals, and fine-grained authorization for RAG. Best for agent builders.

Managed auth plus 1,000+ pre-authenticated toolkits that give AI agents per-user, scoped access to SaaS apps with automatic OAuth/token refresh. Best for agent builders.

Identity platform for AI agents and MCP: turn any app into an OAuth provider (Inbound Apps), vault and refresh third-party tokens, and give each agent a scoped identity. Best for agent builders.

AI-native integration platform with prebuilt connectors, configurable actions/flows and MCP so agents get authenticated, mapped access to your customers' SaaS apps. Best for agent builders.

Hosted, production MCP servers with built-in OAuth and multi-tenant auth across 600+ tools, plus the open-source Strata server for self-hosting. Best for agent builders.

Gives agents secure, authenticated access to thousands of prebuilt tools across 220+ integrations via custom MCP servers, with enterprise governance and normalized data. Best for agent builders.

Open-source integration platform providing OAuth, token refresh and credential storage for 800+ APIs, with each integration exposed to agents over MCP. Best for agent builders.

Unified integration API exposing 1,000+ prebuilt actions across 130+ connectors (plus an MCP server and triggers) so agents can act in CRMs, ticketing, email and messaging. Best for agent builders.

Agent tooling platform (OneTool) connecting agents to 100+ APIs and 25,000+ actions through a single SDK, with AuthKit for managed auth; community edition is open source. Best for agent builders.

Embedded integration API and managed auth that lets your app or agent connect accounts and run actions across 3,000+ apps on behalf of end users. Best for agent builders.

Modular auth stack for AI apps: puts an OAuth 2.1 authorization server in front of MCP servers, adds delegated agent identity and a token vault, plus enterprise SSO/SCIM. Best for agent builders.

Turns your app into an OAuth 2.1/OIDC provider giving agents and MCP servers scoped, revocable, auditable access with a drop-in consent UI and human-in-the-loop approvals. Best for agent builders.

Cloud tool infrastructure and Agent Studio that equip any LLM with hosted, low-latency tools (code exec, web, RAG, MCP) by wrapping your completion in a few lines. Best for agent builders.

With one config value AuthKit becomes an MCP-compliant OAuth 2.1 authorization server; adds SSO, SCIM, audit logs and fine-grained tool-level authorization for agents. Best for agent builders.