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mcp-use__mcp-use/docs/python/changelog/changelog.mdx
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Pietro Zullo 8348c59a53 docs: reorganize, fix accuracy, and update for agent readability (#1502) 
* docs: reorganize navigation and clean up content

- Remove 'Misc' group with misplaced blog posts
- Remove 'Libraries' redirect group from Home nav
- Simplify 'Dev Tools' group (flatten Inspector, CLI, Tunneling)
- Remove individual changelog versions from Python nav (keep summary)
- Remove changelog from TypeScript 'Get Started' group
- Remove tunneling duplicate from Python Development group
- Rewrite mcp101 as clean MCP concepts page (was pitch deck)
- Delete typescript/blog posts (not technical docs)
- Add redirects for deleted blog post URLs

* docs: fix content accuracy and remove sloppy language

- Fix broken python/server/mcp-apps link in home page
- Remove informal pitch-speak from python/server/index.mdx
- Fix grammar error in typescript/server/index.mdx
- Update typescript/client/logging.mdx: remove fake 'coming soon' API code
- Fix non-existent model name gpt-5.1 in typescript quickstart
- Fix mcp_use naming in development contributing guide

* docs: fix incorrect TypeScript server API calls in inspector docs

- Replace server.addTool() with server.tool() (correct mcp-use API)
- Add missing zod import to debugging-chatgpt-apps example

* docs: fix fake model names (gpt-5.1 → gpt-4o) in agent docs

* docs: update model names, fix APIs, and add agent visibility hints

- Replace all deprecated model names with latest: gpt-4.1, gpt-4.1-mini,
  claude-sonnet-4-6, claude-opus-4-7, gemini-2.5-flash across all docs
- Fix TypeScript server.tool() API in installation.mdx (old positional string form)
- Fix TypeScript agent.run() in quickstart.mdx (deprecated string form → object)
- Remove broken manufact.com/docs/llms.txt hidden hints from 5 pages
- Add <Visibility for="agents"> block to mcp101.mdx with install commands,
  key classes, and API signatures for agent-oriented navigation
- Add LangChain provider install note to Python quickstart (mcp-use agent
  requires a separate langchain-* provider package)
- Update model name cards in Python llm-integration.mdx

* docs: clean up remaining stale model names and improve accuracy

- Update supported model lists in Python and TypeScript llm-integration pages
- Fix cost optimization table to use current model IDs
- Update TypeScript agent overview supported providers list

* docs: add LangChain provider install to TypeScript quickstart agent section

The MCPAgent requires a separate @langchain/* provider package; this was
not mentioned before the code example that imports from @langchain/openai.

* docs: update to latest flagship model IDs (May 2026)

- OpenAI: gpt-4.1 → gpt-5.5, gpt-4.1-mini → gpt-5.5-mini
- Google: gemini-2.5-flash → gemini-3.1-flash, gemini-2.5-pro → gemini-3.1-pro
- Groq: llama-3.1-* → llama-4-scout-17b-16e-instruct
- Anthropic (claude-opus-4-7, claude-sonnet-4-6) already current, no change

* docs: replace all em dashes with hyphens

* docs: restore llms.txt hints using Visibility component

* docs: simplify TypeScript logging page to unsupported notice only

* docs: rewrite mcp101 to explain MCP protocol with mcp-use examples and doc links

* docs: remove goal.md

* docs: revert nav changes, keep only Misc group removal and blog redirects

* docs: reorder mcp101 to Server/App -> Client/Inspector -> Agent, restore title

* docs: add code examples for Resources and Prompts in mcp101

* docs: remove em dashes from mcp101

* docs: add MCPClient code examples to mcp101

* docs: add React client example to mcp101

* docs: add agent code examples to mcp101

* docs: expand MCP Apps section in mcp101 with example and links

* docs: restore Contacts, Socials, and Founders sections to mcp101

* docs: add context-setting intro paragraph to mcp101 for new readers

* docs: add MCP stores section to mcp101 intro with Claude, ChatGPT, Cursor

* docs: fix Claude store link

* docs: fix ChatGPT store link

* docs: fix Cursor store link

* docs: replace store Cards with linked image grid

* docs: add captions to store images

* docs: add Notifications to client primitives table in mcp101

* docs: add lead-in paragraph before resource cards at bottom of mcp101

* docs: move resource cards to end of page after Contacts/Socials/Founders

* docs: demote Contacts/Socials/Founders to bold text to remove from TOC

* docs: move Contacts/Socials/Founders to very end of mcp101

* docs: add Resources and Contacts section headers, link official MCP docs

* chore(docs): update site metadata, footer links, and rename mcp_use to mcp-use

* update docs metadata + images

* docs: enhance MCP section by highlighting the reach of MCP stores with 1 billion weekly active users

* api ref
2026-05-14 18:49:06 +02:00

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---
title: "Updates"
description: "New updates and improvements"
icon: "history"
---
import { Contributors } from '/snippets/contributors.jsx'
<Update label="v1.7.0 - 2026‑03‑17">
<Frame>
<img src="https://mcp-use.com/api/og/release?v=1.7.0&title=CLI%20Scaffolding%20and%20Full%20Conformance&date=2026-03-17" alt="Release 1.7.0" />
</Frame>
## CLI Scaffolding & Full Conformance
- **New**: `create-mcp-use` CLI for scaffolding new MCP projects ([#1097](https://github.com/mcp-use/mcp-use/pull/1097))
- **New**: Auto-retry next available port when default is in use ([#1163](https://github.com/mcp-use/mcp-use/pull/1163))
- **New**: `mcp_logs_only` option to hide non-MCP HTTP access logs ([#1164](https://github.com/mcp-use/mcp-use/pull/1164))
- **New**: Conformance test infrastructure for server + client ([#1008](https://github.com/mcp-use/mcp-use/pull/1008))
- **New**: Protocol handlers for logging, completions, subscriptions ([#1004](https://github.com/mcp-use/mcp-use/pull/1004))
- **Fix**: 100% client conformance (20/20) - SSE retry fix ([#1019](https://github.com/mcp-use/mcp-use/pull/1019))
- **Fix**: WeakSet for resource subscriptions to prevent memory leak ([#1093](https://github.com/mcp-use/mcp-use/pull/1093))
- **Fix**: Simplified Optional parameter JSON Schema ([#1141](https://github.com/mcp-use/mcp-use/pull/1141))
- **Fix**: Respect configured inspector path ([#1176](https://github.com/mcp-use/mcp-use/pull/1176))
<Contributors users="pietrozullo,renvins,stakeswky,Yuukidiv" />
</Update>
<Update label="v1.6.0 - 2026‑01‑21">
<Frame>
<img src="https://mcp-use.com/api/og/release?v=1.6.0&title=Bearer%20Token%20Auth%20and%20Middleware&date=2026-01-21" alt="Release 1.6.0" />
</Frame>
## Bearer Token Auth & Middleware
- **New**: Bearer Token authentication for Python MCP servers ([#841](https://github.com/mcp-use/mcp-use/pull/841))
- **New**: Intercept MCP handshake with `on_initialize` middleware ([#769](https://github.com/mcp-use/mcp-use/pull/769))
- **Fix**: DNS rebinding protection for cloud/proxy deployments ([#825](https://github.com/mcp-use/mcp-use/pull/825))
- **Fix**: Improved debug and `pretty_print_jsonrpc` behavior ([#814](https://github.com/mcp-use/mcp-use/pull/814))
- **Fix**: Added timeout mechanism to `ConnectionManager.stop()` ([#726](https://github.com/mcp-use/mcp-use/pull/726))
<Contributors users="pietrozullo,renvins,Incharajayaram" />
</Update>
<Update label="v1.5.2 - 2025‑01‑12">
<Frame>
<img src="https://mcp-use.com/api/og/release?v=1.5.2&title=Roots%20support%20and%20OAuth%202.1&date=2025-01-12" alt="Release 1.5.2" />
</Frame>
## Roots & OAuth 2.1
- **New**: Roots support in MCPClient and MCPServer for hierarchical resource organization ([#751](https://github.com/mcp-use/mcp-use/pull/751))
- **New**: OAuth 2.1 adaptation from new MCP spec with improved security practices ([#518](https://github.com/mcp-use/mcp-use/pull/518))
- **New**: CLAUDE.md files for AI-assisted development guidance ([#775](https://github.com/mcp-use/mcp-use/pull/775))
- **Fix**: Inspector CDN path and error fallback handling ([#773](https://github.com/mcp-use/mcp-use/pull/773))
- **Fix**: Documentation updates and improvements ([#774](https://github.com/mcp-use/mcp-use/pull/774))
<Contributors users="Pederzh,renvins,pietrozullo" />
</Update>
<Update label="v1.5.0 - 2025‑12‑01">
<Frame>
<img src="https://mcp-use.com/api/og/release?v=1.5.0&title=Complete%20MCP%20Server%20SDK&date=2025-12-01" alt="Release 1.5.0" />
</Frame>
## Complete MCP Server SDK
- **Major**: Complete MCP Server SDK with MCPServer class, routing, and production features
- **New**: MCPRouter for modular server organization (similar to FastAPI's APIRouter)
- **New**: Enhanced Context with sampling, elicitation, and notification support
- **New**: Advanced logging system with customizable formats and JSON-RPC debugging
- **New**: Built-in Inspector integration for real-time debugging and testing
- **New**: Multiple transport protocols (stdio, streamable-http, SSE)
- **New**: Development tools (docs UI, OpenMCP config, inspector)
- **New**: FastMCP compatibility layer for seamless migration
- **Enhancement**: Middleware can now modify context parameters ([#522](https://github.com/mcp-use/mcp-use/pull/522))
- **Enhancement**: Tool enable/disable support with dynamic notifications
- **Enhancement**: Refactored test suite using MCPServer instead of external servers
- **Enhancement**: Type checking with ty and pre-commit hooks with prek
- **Enhancement**: Moved Ruff configuration to pyproject.toml for better organization
<Contributors users="pietrozullo,vkrasnoselskikh,renvins,tonxxd" />
</Update>
<Update label="v1.4.1 - 2025‑11‑20">
<Frame>
<img src="https://mcp-use.com/api/og/release?v=1.4.1&title=Code%20Mode%20and%20Pretty%20Display&date=2025-11-20" alt="Release 1.4.1" />
</Frame>
## Code Mode & Pretty Display
- **New**: Code Mode integration for direct code execution through MCP servers with isolated environments
- **New**: Pretty Display system with rich, colorful terminal output for agent interactions
- **New**: LangChain integration guide and example implementation
- **Enhancement**: SSL certificate verification control via `verify` parameter in MCPClient
- **Enhancement**: Enhanced schema handling for complex data structures with improved list support
- **Fix**: Recursion limit configuration in MCPAgent to prevent stack overflow errors
- **Fix**: Client info property in base connector for proper metadata reporting
<Contributors users="pietrozullo,renvins,tonxxd" />
</Update>
<Update label="v1.4.0 - 2025‑10‑27">
<Frame>
<img src="https://mcp-use.com/api/og/release?v=1.4.0&title=LangChain%201.0%20and%20Provider%20Adapters&date=2025-10-27" alt="Release 1.4.0" />
</Frame>
## LangChain 1.0 & Provider Adapters
- **Major**: Upgraded to LangChain 1.0.0 for improved performance and simplified agent patterns
- **New**: Direct provider adapters for OpenAI, Anthropic, and Google - use MCP tools without MCPAgent
- **Enhancement**: Agent methods now leverage LangChain 1.0.0's `create_agent()` and internal `astream()` for better loop handling
- **Enhancement**: Dynamic tool updates during agent execution
- **Enhancement**: Enhanced step tracking and middleware support for better observability
- **Enhancement**: Remote mode query streaming delegation
- **Fix**: Improved streaming output reliability with proper null checking
- **Fix**: Automatic ToolMessage filtering from conversation history
<Contributors users="pietrozullo,renvins" />
</Update>
<Update label="v1.3.13 - 2025‑10‑18">
## Package Reorganization
- **Refactor**: Reorganized package structure into `client.*` and `agents.*` namespaces for better discoverability
- **Deprecation**: Old import paths (auth, middleware, managers, adapters, task_managers) are deprecated but still work with backward compatibility
- **Enhancement**: Clearer separation between client and agent concerns for improved maintainability
- **Fix**: Temporarily pinned to LangChain 0.3.27 to prevent breaking changes from 1.0.0 release (migration planned)
</Update>
<Update label="v1.3.12 - 2025‑10‑02">
<Frame>
<img src="https://mcp-use.com/api/og/release?v=1.3.12&title=Middleware%20and%20Documentation&date=2025-10-02" alt="Release 1.3.12" />
</Frame>
## Middleware & Documentation
- **New**: Comprehensive middleware system for request/response interception ([#269](https://github.com/mcp-use/mcp-use/pull/269))
- **New**: Automatic API documentation generation ([#301](https://github.com/mcp-use/mcp-use/pull/301))
- Fix: Tool result standardization for consistent output ([#288](https://github.com/mcp-use/mcp-use/pull/288))
- Fix: Duplicate user message prevention in conversation history ([#287](https://github.com/mcp-use/mcp-use/pull/287))
- Fix: Agent memory handling to prevent duplicate queries ([#187](https://github.com/mcp-use/mcp-use/pull/187))
- Enhancement: Middleware metrics collection for better observability ([#299](https://github.com/mcp-use/mcp-use/pull/299))
- Fix: Test server execution with proper executable paths ([#298](https://github.com/mcp-use/mcp-use/pull/298))
<Contributors users="pietrozullo,renvins" />
</Update>
<Update label="v1.3.11 - 2025‑09‑29">
<Frame>
<img src="https://mcp-use.com/api/og/release?v=1.3.11&title=Auth%20Revolution&date=2025-09-29" alt="Release 1.3.11" />
</Frame>
## Auth Revolution
- **New**: Complete OAuth2 and Bearer token authentication framework ([#149](https://github.com/pietrozullo/mcp-use/pull/149))
- Fix: HTTP connector error handling with better diagnostics ([#279](https://github.com/pietrozullo/mcp-use/pull/279))
- Fix: Accept empty tool results without validation errors ([#273](https://github.com/pietrozullo/mcp-use/pull/273))
- Fix: JSON schema enum validation in jsonschema_to_pydantic conversion ([#270](https://github.com/pietrozullo/mcp-use/pull/270))
- Fix: Documentation typo (astream → stream) ([#266](https://github.com/pietrozullo/mcp-use/pull/266))
- Enhancement: MCPAgent execution tracking with success status ([#254](https://github.com/pietrozullo/mcp-use/pull/254))
- Fix: Subprocess cleanup for multiple MCP clients to prevent memory leaks ([#231](https://github.com/pietrozullo/mcp-use/pull/231))
<Contributors users="pietrozullo,renvins,Amrithesh-Kakkoth,hetsaraiya,lorenss-m" />
</Update>
<Update label="v1.3.3 - 2025‑06‑19">
## Stability Boost
- Set default logging level to info
- Fix: prevent double async cleanup and event loop errors in astream
- Fix: Raise import error for fastembed, server manager does not silently fail
- Fix: search tools tuple unpacking error
</Update>
<Update label="v1.3.1 - 2025‑06‑10">
## Stream Power
- Remove client options for easier usage
- Add streamable HTTP support
- Fix websocket error positional arguments (headers were missing)
- Fix connection state tracking after SSE disconnection
- Add CLAUDE.md for development guidance
</Update>
<Update label="v1.3.0 - 2025‑05‑27">
## Sandbox Magic
- Added optional E2B sandbox execution so MCP servers can run in secure cloud sandboxes.
- `MCPAgent.astream()` now lets you stream results **and** automatically log full conversation history.
</Update>
<Update label="v1.2.13 - 2025‑05‑19">
## Resource Discovery
- Alpha support for **Resources** & **Prompts** exposed by remote servers.
- Routine version bump and stability tweaks across task / connection managers.
</Update>
<Update label="v1.2.10 - 2025‑05‑11">
## Emergency Patch
- Hot‑fix: patched **FastEmbed** import failure that could break vector search.
</Update>
<Update label="v1.1.5 - 2025‑04‑11">
## Polish Pass
- Maintenance release – internal refactors, doc clean‑ups, and incremental API polish.
</Update>
<Update label="v1.0.1 - 2025‑04‑07">
## Transport Layer
- Introduced HTTP transport layer and dynamic multi‑server selection.
</Update>
<Update label="v1.0.0 - 2025‑04‑03">
## Stable Launch
- First stable release of the unified Python client after the 0.0.x preview series.
</Update>
<Update label="v0.0.6 - 2025‑04‑02">
## Public Preview
- Initial public preview published to PyPI; automated publish workflow enabled.
</Update>
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