Composio

Composio is an AI tool-calling and integration platform built by Sampark Inc, a YC W24-backed company, that connects AI agents to over 250 external tools and services via its MCP Gateway and function-calling infrastructure. The platform is designed to solve the authentication, rate-limiting, and execution reliability problems that arise when AI agents try to take actions in external systems like GitHub, Salesforce, Slack, Gmail, Linear, Notion, and hundreds of others. Rather than requiring developers to build and maintain individual integrations, Composio provides managed, production-grade connections that handle OAuth flows, credential refresh, and error handling automatically. The MCP Gateway product gives AI agents a single standardised endpoint for all tool calls, compatible with Claude, Cursor, Codex, Hermes, and other agent frameworks. Pricing is usage-based, verified live on composio.dev/pricing on May 6, 2026: Free tier at $0 per month with 20,000 tool calls per month and community support; Ridiculously Cheap at $29 per month with 200,000 tool calls per month, email support, and $0.299 per 1,000 additional calls; Serious Business at $229 per month with 2,000,000 tool calls per month, Slack support for teams generating over 1,000 calls per month, and $0.249 per 1,000 additional calls; Enterprise with custom user accounts, dedicated SLA, SOC-2 compliance, custom API volume, and VPC or on-premises deployment. Setup for a developer takes approximately 10 minutes from account creation to first tool call via the SDK or CLI. Composio''s autonomous rate is very high for the tool-execution layer: once an AI agent is connected via the MCP Gateway or function-calling interface, Composio handles all tool dispatch, authentication, retry logic, and result return without human intervention, enabling agents to take actions in external systems at full autonomous speed. Security: SOC-2 compliance is mentioned for the Enterprise tier on the pricing page. No independent first-party security certification documentation (trust page, security page, or ISO 27001) was found at composio.dev as of May 6, 2026. The legal entity is Sampark Inc; data handling details are in the Composio privacy policy (effective November 18, 2025). Limits: tool call limits on Free (20K) and Starter ($29) tiers can exhaust quickly for agents running complex multi-step workflows in production; overage pricing ($0.299/1K on Starter) adds unpredictable cost as agent usage scales; SOC-2 is available only on Enterprise which requires custom pricing; no self-serve MCP server hosting (Arcade provides hosted servers; Composio''s Gateway is connection-based); the platform is a developer tool requiring code-level integration -- non-technical teams cannot use Composio directly. TCO at Starter for a team doing 200K calls/mo is $29 per month ($348/year); at Serious Business for 2M calls/mo is $229 per month ($2,748/year).