One API key for hundreds of AI models from every major provider
Treg: Open-source MCP gateway and pay-per-call catalog, but offers less extensive managed authentication workflows than Composio. Composio records 2,782,603 monthly visits with +22.8% month-over-month growth and Freemium, Contact for Pricing pricing. Treg records 452,935 monthly visits with +223.4% growth and Freemium pricing.

One key for 4,100+ agent tools, pay per call
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | composio.dev | treg.to |
| Pricing Model | Freemium, Contact for Pricing | Freemium |
| Monthly Visits | 2.78M (2,782,603) | 452.94K (452,935) |
| MoM Traffic Delta | +517.42K (+22.8%) | +312.9K (+223.4%) |
| Primary Market & Share | 🇺🇸 United States (28.6%) | 🇺🇸 United States (36.8%) |
| Direct Visits / mo | 1.24M | 235.3K |
| User Rating | 4.5 | 4.5 |
| Supported Platforms | Website | Website |

Give your AI agents secure, authenticated access to 1,700+ apps
A large catalog of pre-built integrations spanning productivity, CRM, support, engineering, finance, HR, and e-commerce apps, each exposing callable actions to your agent.
Composio runs OAuth flows, stores and refreshes credentials, and enforces per-action permission scopes so agents act only where you allow them.
One managed MCP endpoint that connects Claude, ChatGPT, Codex, Cursor, and other MCP clients to your entire tool catalog in a few clicks.
Start background agents from events occurring across connected apps, so work can begin without a user prompt.

One key for 4,100+ agent tools, pay per call
A single treg token routes to 4,100+ endpoints across 127 providers, so no per-provider signups or scattered key files.
See each provider's price plus measured success rate, speed, and last-answer time, and pin a preferred vendor when you want.
Pay fractions of a cent per call with the price shown before you commit, no monthly seats required.
Route calls through your existing provider keys at no markup; credentials are injected server-side and never stored on a machine.
One API key for hundreds of AI models from every major provider

SpecialistProvides advanced browser automation and live web fetching, but lacks a general pay-per-call API marketplace.

SpecialistExcels at AI-optimized web search and crawling data, but lacks broader multi-app tool integration capabilities.
One OpenAI-compatible gateway for adaptive LLM routing, guardrails, and spend control
One OpenAI-compatible gateway for adaptive LLM routing, guardrails, and spend control

Free / Open-sourceOffers an open-source AI gateway for model routing, but focuses on LLMs rather than general data endpoints.

SpecialistRobust TypeScript framework for agent workflows and tools, but requires writing custom integration code instead of pre-built connectors.

Offers universal B2B data and tool integrations for agents, but focuses less on pay-per-call API monetization.

Delivers robust managed integration workflows and triggers for agents, but offers fewer native MCP-specific endpoints.

One universal API for 500+ AI models and 1,000+ agentic tools
Provides enterprise-grade AI gateway features and observability, but lacks open-source pay-per-call API monetization tools.
Provides enterprise-grade AI gateway features and observability, but lacks open-source pay-per-call API monetization tools.
Free / Open-sourceDelivers open-source routing and failover for foundation models, but lacks Treg's extensive data endpoint catalog.
Free / Open-sourceDelivers open-source routing and failover for foundation models, but lacks Treg's extensive data endpoint catalog.

SpecialistFlexible Python agent framework with built-in tools, but less focused on acting as a standalone universal integration middleware.