Arcade
Authorization and tool infrastructure for AI agents.
Arcade (arcade.dev) builds the identity and authorization layer for agents — OAuth-backed tool execution, credential management and fine-grained access control so agents can act on a user's behalf without inheriting god-mode credentials. Raised a $60M Series A in 2026.
In the news
Related startups
Composio
The integration layer: hundreds of managed tools your agents can call.
Composio handles auth, schemas, observability and reliability for the external SaaS tools an agent uses — 'plumbing for agentic actions' across Slack, GitHub, Salesforce and 250+ other surfaces.
Smithery
A registry and toolchain for MCP servers.
Smithery indexes and helps deploy MCP (Model Context Protocol) servers — a distribution layer for the tool ecosystem agents connect to.
Exa
Search API purpose-built for AI agents.
Exa (formerly Metaphor) provides neural search and web-crawl APIs tuned for agent consumption — live, cited knowledge for agents instead of stale training data.