Arcade (arcade.dev) is an MCP runtime and authenticated tool-calling platform built for teams deploying AI agents in production. It solves the core security problem of AI agents needing access to user credentials and third-party services: rather than passing tokens or API keys into LLM prompts, Arcade stores secrets and executes API calls at runtime, returning only structured results to the model. The platform centers on just-in-time OAuth authorization. When an agent needs to act on behalf of a user, Arcade triggers an authorization flow only at the moment the tool is actually invoked. Tokens are stored and refreshed by Arcade, and per-call scoping is enforced declaratively. In 2026, Arcade introduced URL Elicitation, a new MCP specification feature co-developed with Anthropic that allows MCP servers to directly trigger OAuth flows with any web-based service, making agents enterprise-ready for SaaS tools, payment platforms, and internal systems. Arcade provides a catalog of pre-built MCP servers and tool integrations covering major platforms such as Gmail, Slack, GitHub, Google Workspace, Microsoft, and Salesforce, with over 7,000 integrations available. Developers can also build custom authenticated tools using Arcade's SDK. The platform is compatible with leading agent frameworks including LangChain, LlamaIndex, CrewAI, Mastra, Pydantic AI, Google ADK, and OpenAI Agents SDK. Arcade was co-founded in 2024 by Alex Salazar (ex-Okta), Sam Partee, and Atul Tulshibagwale. The company raised a $12M seed round led by Laude Ventures and Madrona Venture Group, announced in March 2025. It targets developers and enterprises building multi-user AI agents where authorization, credential isolation, and audit compliance are requirements. Key features: - OAuth-based just-in-time user authorization for agent tool calls - Secure credential isolation: tokens never passed into LLM prompts or logs - 7,000+ pre-built MCP tool integrations (Gmail, Slack, GitHub, Salesforce, etc.) - URL Elicitation support for MCP servers, enabling OAuth with any web-based service - Compatible with LangChain, LlamaIndex, CrewAI, Mastra, OpenAI Agents SDK, Google ADK - Custom tool SDK for building authenticated integrations against internal APIs - Enterprise features: audit logs, RBAC, SSO/SAML, dedicated tenant isolation - Acts as a drop-in replacement for OpenAI API endpoint for existing LLM applications
Free tier with limited executions; Pro plan includes 100 tool executions then $0.50 each, hosted MCP servers at $0.05/hour; Enterprise is custom pricing with dedicated tenancy, RBAC, SSO/SAML, audit logs, and SLAs.