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Klavis AI
Open-source infrastructure and hosted MCP servers with built-in OAuth across 600+ tools.
Free plan Free trial Claimed API Self-hosted Teams
Toolglade’s take
Klavis AI hits a nice sweet spot: open-source so you can self-host and audit, but with a managed option that handles the genuinely hard parts (multi-tenant OAuth across hundreds of tools). The Slack/Discord/web clients and broad SDK support are practical touches for shipping quickly. Caveats: it's a young, YC-stage company, so expect rapid change and evaluate production reliability yourself; hosted-tier limits and enterprise pricing need direct confirmation. Verify current coverage and pricing with the vendor.
About Klavis AI
Klavis AI is an open-source, YC-backed platform providing hosted, secure MCP servers with built-in OAuth and multi-tenant auth across 600+ tools and SaaS apps. It offers MCP clients for Slack, Discord, and the web, plus Python/TypeScript SDKs and a REST API. Teams can self-host the open-source core or use the managed service.
Klavis AI, founded by ex-Google DeepMind and ex-Lyft engineers and backed by Y Combinator (X25), provides open-source infrastructure to build, use, and scale MCP servers for AI applications. Its hosted, secure MCP servers eliminate the need to manage authentication and client code, with built-in OAuth and multi-tenant auth spanning 600+ tools and SaaS apps, including production-ready servers for GitHub, Slack, Gmail, Salesforce, Linear, and Notion. Beyond servers, Klavis offers MCP clients for Slack, Discord, and the web so users can invoke MCP tools inside those platforms, plus Python/TypeScript SDKs and a REST API with support for OpenAI, Claude, Gemini, LangChain, LlamaIndex, and CrewAI. Because the core is open source, teams can self-host, or use the managed service for hosted servers and enterprise OAuth. As with all MCP infrastructure in 2026, coverage and pricing evolve quickly.
TL;DR
Klavis AI is a YC-backed, open-source MCP infrastructure platform offering hosted servers with built-in OAuth across 600+ tools, plus Slack/Discord clients and SDKs.
Company overview
Klavis AI is a Y Combinator (X25) startup founded by ex-Google DeepMind and ex-Lyft engineers, building open-source infrastructure for MCP.
It targets developers who want to use, build, and scale MCP servers without managing authentication and client code.
Product features
Klavis offers hosted, secure MCP servers with built-in OAuth and multi-tenant auth across 600+ tools, MCP clients for Slack, Discord, and the web, and Python/TypeScript SDKs plus a REST API.
The open-source core can be self-hosted, and the platform supports major LLM providers and agent frameworks.
Target market
Developers and teams building agentic applications that need authenticated tool access across many SaaS apps, with the option to self-host.
Buyer personas
End users
Developers wiring authenticated tools into agents.
Buyers
Engineering leads at startups building agent products.
Key influencers
YC network, open-source and MCP communities.
Ideal customer profile
A startup or team building multi-tenant agentic products that wants open-source flexibility plus managed OAuth across many SaaS tools.
Funding & performance
Klavis AI is backed by Y Combinator (X25); verify any additional funding, which may have changed since.
Pros & cons
Pros
- Open source and self-hostable
- Managed hosted servers with built-in OAuth
- Multi-tenant auth across 600+ tools
- Clients for Slack, Discord, and the web
- SDKs for Python and TypeScript plus REST API
- Broad framework and model support
Cons
- Young YC-stage company; rapid change expected
- Production reliability must be validated yourself
- Hosted-tier limits and enterprise pricing need confirmation
- Self-hosting requires operational effort
- Tool coverage varies by app
Pricing plans
Open Source / Free
$0
- Self-host the open-source core
- Free tier for hosted service
- Built-in OAuth
- SDKs and REST API
Pro / Hosted
Paid
- Managed hosted MCP servers
- Higher usage limits
- Multi-tenant auth
- Verify pricing with vendor
Enterprise
Custom
- Enterprise OAuth and security
- Dedicated support
- SLA options
- Contact sales
Key features
API
Team collaboration
Self-hosted
Multi-language
Integrations
GitHub, Slack, Gmail, Salesforce, Linear, Notion
Input types
text
Output types
text
Best For
Hosted MCP servers with OAuth, Self-hosting open-source MCP infra
Compare key features
View all alternatives →Feature
Klavis AI
Ollama
Hugging Face
Pricing
Freemium
Freemium
Freemium
Free plan
Yes
Yes
Yes
Free trial
Yes
No
No
API
Yes
Yes
Yes
Self-hosted
Yes
Yes
No
Team support
Yes
No
Yes
Frequently asked questions
Is Klavis AI open source?+
Yes. Its core infrastructure is open source and self-hostable, with an optional managed service for hosted servers and OAuth.
How many tools does it support?+
Klavis runs managed MCP servers with built-in OAuth across 600+ tools and SaaS apps.
Can I use MCP tools in Slack or Discord?+
Yes. Klavis offers MCP clients for Slack, Discord, and the web.
Who is behind Klavis AI?+
It was founded by ex-Google DeepMind and ex-Lyft engineers and is backed by Y Combinator (X25).
How do I integrate it?+
Via Python/TypeScript SDKs or a REST API, with support for OpenAI, Claude, Gemini, LangChain, LlamaIndex, and CrewAI.
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