Upstash

Upstash operates a range of serverless data services billed on usage rather than fixed server capacity: serverless Redis with global replication and low latency, a vector database for similarity search across hundreds of millions of entries, QStash for HTTP-based messaging and scheduling with automatic retry logic, and Workflow for orchestrating multi-step serverless functions without classic timeout limits.

The entry listed on this platform, Context7, also comes from Upstash but is a distinct product: an MCP server that loads current, version-specific documentation directly into an AI coding assistant's context. The problem Context7 solves is concrete: language models often "remember" outdated API states from their training data and suggest, say, React code from an older version even though a project has long since moved to a newer one. Through two tools — a library ID resolver and a documentation fetcher — Context7 provides current examples and references instead of relying on the model's (potentially outdated) built-in knowledge.

Context7 is supported by more than 30 AI coding tools according to Upstash, including Cursor, Claude Code, VS Code with Copilot, and Windsurf. Upstash's overall billing model is consumption-based: users pay only for requests actually made, with a guaranteed price cap and a free tier requiring no fixed minimum spend.

As a California-based company, Upstash specifically targets development teams that want to run serverless architectures without managing their own infrastructure, instead of maintaining classic database servers themselves.