> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chainstack.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Chainstack updates: May 28, 2026

> Every Chainstack MCP server tool now publishes a typed output schema, so agents can consume structured results without guessing field names.

**MCP Server**. Every tool on the [Chainstack MCP server](https://mcp.chainstack.com) now publishes a typed [`outputSchema`](https://modelcontextprotocol.io/specification/2025-11-25/server/tools#output-schema) describing the fields it returns — for example, a project declares `id`, `name`, `description`, `networks`, `created_at`, and `creator`, and a node carries typed `https_endpoint`, `wss_endpoint`, `api_namespaces`, `cloud`, and `blockchain`.

* List-returning tools (`list_projects`, `list_nodes`, `get_deployment_options`, `search_docs`) now emit `structuredContent` alongside the existing text — an additive change, so clients that ignored it before keep working unchanged.
* Agents consuming MCP structured output can extract data reliably without guessing at field names. No behavior change to existing tool calls.