MCP Compression: Preventing tool bloat in AI agents

Introduced mcp-compressor, an open-source MCP proxy that wraps existing MCP servers to reduce tool-description token usage by 70-97%. The proxy replaces a server's full tool inventory with generic wrapper tools (get_tool_schema, invoke_tool, optionally list_tools) to enable on-demand schema fetching. This reduces prompt costs, improves cache behavior, and scales to multiple servers. The post details configurable compression levels and their impact on token counts, and discusses design principles like preserving structure, namespacing, cache-friendliness, and explicit discovery paths. It also contrasts this approach with code-mode execution.