Replit Adds Supabase, Statsig, Calendly, and Braintrust MCP Servers
ReplitReplit expanded its MCP server catalog with three new pre-listed integrations — Supabase, Statsig, and Calendly — that eligible workspaces can connect with a single click. Replit also added support for the official Braintrust MCP endpoint, which it now recognizes automatically and walks users through an OAuth sign-in flow for when added manually. The additions give Agent direct access to backend databases, product experimentation data, scheduling, and AI evaluation tooling without custom integration work.
Key Takeaways
- Replit added four new MCP servers in one release: Supabase, Statsig, and Calendly via the pre-listed catalog, plus Braintrust via manual OAuth.
- Supabase integration lets Agent manage tables and query data directly, relevant to the large share of Replit projects already using Supabase as their backend.
- Statsig support connects Agent to real feature-flag and experimentation data, letting AI-assisted development decisions be grounded in live product data.
- Braintrust is handled differently from the others — Replit auto-recognizes its official MCP endpoint and triggers OAuth sign-in rather than listing it in the standard catalog.
- The release continues a steady cadence of MCP catalog growth Replit has maintained since mid-2026, following prior additions like Apollo, FLUX, Quiver AI, and Browserbase.
- These integrations reduce the need for custom API glue code, letting developers wire external tools into Agent-driven builds with one click instead of manual setup.
Expanding the MCP Server Catalog
Replit continued building out its Model Context Protocol (MCP) ecosystem, adding four new servers that let Agent connect to external tools and data sources with minimal setup. Three of the four — Supabase, Statsig, and Calendly — are now available directly from Replit's pre-listed MCP server catalog for eligible workspaces, meaning users can connect them the same way they'd connect any other one-click integration.
What Each Integration Unlocks
Supabase support means Agent can now interact more directly with Supabase-backed projects — managing tables, querying data, and handling schema-related tasks as part of a conversational build flow, rather than requiring users to jump into the Supabase dashboard separately. This is particularly relevant given how many Replit projects already use Supabase as their Postgres backend.
Statsig brings feature-flagging and product-experimentation data into Agent's reach, letting developers building on Replit tie their AI-assisted workflow to real experiment and rollout data rather than working blind.
Calendly adds scheduling capability, useful for developers building internal tools, booking flows, or customer-facing apps that need calendar integration without hand-rolling an API connection.
Braintrust via Manual OAuth
Rather than adding Braintrust to the pre-listed catalog, Replit took a different approach: it now recognizes the official Braintrust MCP endpoint automatically and initiates an OAuth sign-in flow the moment a user adds it manually. Braintrust provides evaluation and observability tooling for AI applications, so this integration is particularly relevant for teams using Agent to build and iterate on their own AI features who want to tie that work into a formal eval pipeline.
Why It Matters
Each new MCP server reduces the amount of custom glue code developers need to write to connect Agent to the tools they already use, continuing Replit's steady cadence of MCP catalog expansions (following earlier additions like Apollo, FLUX, Quiver AI, and Browserbase) that broaden what Agent can act on directly inside a project.