fastmcp Releases

This release focuses on stabilizing the CI/CD pipeline by fixing npm script handling and preventing binary shadowing issues, alongside introducing a new tool registry discovery feature.

Jul 8, 2026

Focuses on CI/CD reliability and fixes filesystem streaming issues. Introduces workflows for managing published releases.

Jul 7, 2026

Adds Intel XPU inference support and exposes audio processing parameters. Includes code hygiene improvements and community project additions.

Jul 6, 2026

Enhances sandbox management with live resizing capabilities and improves CLI visibility of sandbox states and resources.

Jul 5, 2026

Improves network reliability by scoping TLS verification and fixing IPv6 edge cases. Restores SDK local feature parity.

Jul 4, 2026

This release introduces support for issuer path discovery in OAuth routes, enhancing the authentication configuration process. It addresses issue #283 to provide more flexibility in route handling. The update is a minor feature addition to version 4.4.0.

Jul 3, 2026

This release introduces multi-page session support and expands Web API capabilities, while improving Chrome DevTools Protocol support and fixing critical stability issues.

Jul 1, 2026

A major release integrating transcribe.cpp to enable streaming model support and adding support for numerous new models, alongside various bug fixes and performance improvements.

Jul 1, 2026

Introduces an Interactive Agent Mode, expands Web API support, and improves Chrome DevTools Protocol implementation.

Jun 23, 2026

This release fixes a bug where progress notifications were incorrectly handled when a client does not provide a progress token.

Jun 22, 2026

Upgrades to Vite v8 and introduces a new opt-in CDN cache provider for Cloudflare Workers route caching.

Jun 22, 2026

Major version bump upgrading to Vite v8 and introducing a new import entrypoint to prevent bundling unrelated exports.

Jun 22, 2026

Upgrades to Vite v8, adds support for programmatically modifying frontmatter, and updates the Sätteri processor.

Jun 22, 2026

Adds new project scaffolding features including default documentation files and dev server instructions.

Jun 22, 2026

Upgrades to Vite v8 and updates the Svelte Vite plugin, alongside a new container renderer import path.

Jun 22, 2026

This release addresses a cipher configuration issue by adding an explicit `authTagLength` for AES-256-GCM operations to ensure proper security handling.

Jun 20, 2026

Focuses on user interface and experience improvements, specifically regarding cost visibility and model metadata resolution for Z.ai.

Jun 20, 2026

Adds ClinePass onboarding, hub customization features, and improves context management by truncating large tool results.

Jun 19, 2026

This release introduces new heap snapshot analysis tools and improves page listing and screenshot capabilities with enhanced CLI options.

Jun 18, 2026

Introduces new CLI commands for skill management and MCP setup, alongside improved error handling and input validation.

Jun 17, 2026