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

# Working Groups Overview

> Current MCP working groups, their leads, channels, and focus.

Working groups deliver concrete outcomes such as SEPs, extensions, and code. Each runs under a charter that sets its scope, leads, and operations. This page lists the active working groups. The [Working groups and interest groups](https://modelcontextprotocol.io/community/working-interest-groups.md) page explains how groups work and how to join or form one, and the [charter template](https://modelcontextprotocol.io/community/charter-template.md) covers submitting a charter.

| Working group | Leads | Discord | Focus |
| - | - | - | - |
| [Apps](https://modelcontextprotocol.io/community/working-groups/apps.md) | [Ido Salomon](https://github.com/idosal), [Liad Yosef](https://github.com/liady), [Olivier Chafik](https://github.com/ochafik) | `#mcp-apps-wg` | Official extension for interactive user interfaces over MCP |
| [File Uploads](https://modelcontextprotocol.io/community/working-groups/file-uploads.md) | [Den Delimarsky](https://github.com/localden) | `#file-uploads-wg` | Declaring file inputs for tools and elicitation so hosts can offer native file pickers |
| [Filesystems](https://modelcontextprotocol.io/community/working-groups/filesystems.md) | [Sambhav Kothari](https://github.com/sambhav), [Ola Hungerford](https://github.com/olaservo), [Daniel Temesgen](https://github.com/DanielTemesgen) | `#filesystems-wg` | Aligning MCP Resources with general filesystem semantics |
| [Governance](https://modelcontextprotocol.io/community/working-groups/governance.md) | [Sarah Novotny](https://github.com/sarahnovotny) | `#governance-wg` | Refining, documenting, and stewarding MCP governance processes and community values |
| [Infrastructure](https://modelcontextprotocol.io/community/working-groups/infrastructure.md) | [David Soria Parra](https://github.com/dsp-ant), [Den Delimarsky](https://github.com/localden), [Sambhav Kothari](https://github.com/sambhav) | Not listed yet | Shared project infrastructure and automation that makes routine administration self-service |
| [Inspector V2](https://modelcontextprotocol.io/community/working-groups/inspector-v2.md) | [Cliff Hall](https://github.com/cliffhall), [Ola Hungerford](https://github.com/olaservo), [Bob Dickinson](https://github.com/BobDickinson) | `#inspector-v2-wg` | A new web-based MCP inspector with a shared core across Web, CLI, and TUI |
| [Interceptors](https://modelcontextprotocol.io/community/working-groups/interceptors.md) | [Sambhav Kothari](https://github.com/sambhav), [Peder Holdgaard Pedersen](https://github.com/PederHP), [Kurt Degiorgio](https://github.com/degiorgio), [Uk-Jae Jeong](https://github.com/jeongukjae), [Ola Hungerford](https://github.com/olaservo) | Not listed yet | Standardizing how context operations are intercepted, validated, and transformed |
| [Progressive Disclosure](https://modelcontextprotocol.io/community/working-groups/progressive-disclosure.md) | [Tapan Chugh](https://github.com/chughtapan), [Sam Morrow](https://github.com/SamMorrowDrums) | `#progressive-disclosure-wg` | Exploring how MCP primitives might be organized beyond flat lists |
| [Registry](https://modelcontextprotocol.io/community/working-groups/registry.md) | [Radoslav Dimitrov](https://github.com/rdimitrov) | `#registry-dev` | Building and maintaining the official MCP Registry and its server metadata ecosystem |
| [SDK](https://modelcontextprotocol.io/community/working-groups/sdk.md) | [Felix Weinberger](https://github.com/felixweinberger) | `#general-sdk-dev` | Keeping the official SDKs consistent, conformant, and current with the specification |
| [Server Card](https://modelcontextprotocol.io/community/working-groups/server-card.md) | [David Soria Parra](https://github.com/dsp-ant), [Sam Morrow Drums](https://github.com/SamMorrowDrums) | `#server-card-wg` | Discovery of MCP servers through a standardized Server Card document |
| [Skills Over MCP](https://modelcontextprotocol.io/community/working-groups/skills-over-mcp.md) | [Ola Hungerford](https://github.com/olaservo), [Peter Alexander](https://github.com/poita), [Sambhav Kothari](https://github.com/sambhav) | `#skills-over-mcp-wg` | How agent skills are discovered, distributed, and consumed through MCP |
| [Tasks and Events](https://modelcontextprotocol.io/community/working-groups/tasks-events.md) | [Clare Liguori](https://github.com/clareliguori), [Peter Alexander](https://github.com/poita), [Luca Chang](https://github.com/LucaButBoring), [Caitie McCaffrey](https://github.com/CaitieM20) | Not listed yet | Continuing Tasks development and defining how servers push state change notifications |
| [Transports](https://modelcontextprotocol.io/community/working-groups/transports.md) | [Kurtis Van Gent](https://github.com/kurtisvg) | `#transports-wg` | Evolving transport bindings and transport-adjacent protocol architecture |