(chore) Create MAINTAINERS.md (modelcontextprotocol#1001)

* Create MAINTAINERS.md

* Update MAINTAINERS.md

* Update MAINTAINERS.md

* Update MAINTAINERS.md

* Update based on discussion

* Update maintainers file

* Update MAINTAINERS.md

* Update governance.mdx

* Update MAINTAINERS.md

Author: localden

MAINTAINERS.md

@@ -0,0 +1,113 @@
+# MCP Maintainers
+
+This document lists current maintainers and working groups in the Model Context Protocol project.
+
+**Last updated:** July 23, 2025
+
+## Lead Maintainers
+
+- [Justin Spahr-Summers](https://github.com/jspahrsummers)
+- [David Soria Parra](https://github.com/dsp-ant)
+
+## Core Maintainers
+
+- [Inna Harper](https://github.com/ihrpr)
+- [Basil Hosmer](https://github.com/bhosmer-ant)
+- [Paul Carleton](https://github.com/pcarleton)
+- [Nick Cooper](https://github.com/nicknotfun)
+- Nick Aldridge
+- Che Liu
+- [Den Delimarsky](https://github.com/localden)
+
+## SDK Maintainers
+
+### Java SDK
+
+- [Christian Tzolov](https://github.com/tzolov)
+- [Dariusz Jędrzejczyk](https://github.com/chemicL)
+
+### Ruby SDK
+
+- [Topher Bullock](https://github.com/topherbullock)
+- [Koichi Ito](https://github.com/koic)
+- [Ateş Göral](https://github.com/atesgoral)
+
+### Swift SDK
+
+- [Matt Zmuda](https://github.com/mattt)
+- [Carl Peaslee](https://github.com/carlpeaslee)
+
+### Go SDK
+
+- [Rob Findley](https://github.com/findleyr)
+
+### C# SDK
+
+- [Stephan Halter](https://github.com/halter73)
+- [Mike Kistler](https://github.com/mikekistler)
+
+### Kotlin SDK
+
+- [Leonid Stashevsky](https://github.com/e5l)
+- [Sergey Ignatov](https://github.com/ignatov)
+
+### Python SDK
+
+- [Inna Harper](https://github.com/ihrpr)
+- [Jerome Swannack](https://github.com/jerome3o)
+- [Samuel Colvin](https://github.com/samuelcolvin)
+- [Marcelo Trylesinski](https://github.com/Kludex)
+
+### TypeScript SDK
+
+- [Inna Harper](https://github.com/ihrpr)
+- [Felix Weinberger](https://github.com/felixweinberger)
+- [Olivier Chafik](https://github.com/ochafik)
+
+### Rust SDK
+
+- [Alex Hancock](https://github.com/alexhancock)
+
+## Project Maintainers
+
+- [Glen Maddern](https://github.com/geelen) (use-mcp)
+- [Ola Hungerford](https://github.com/olaservo) (Inspector, Reference Servers)
+- [Cliff Hall](https://github.com/cliffhall) (Inspector, Reference Servers)
+- [Toby Padilla](https://github.com/toby) (Registry)
+- [Tadas Antanavicius](https://github.com/tadasant) (Registry, Reference Servers)
+- [Shaun Smith](https://github.com/evalstate) (Reference Servers)
+- [Jonathan Hefner](https://github.com/jonathanhefner) (Reference Servers)
+
+## Community Moderators
+
+- [Ola Hungerford](https://github.com/olaservo)
+- [Cliff Hall](https://github.com/cliffhall)
+- [Shaun Smith](https://github.com/evalstate)
+- [Jonathan Hefner](https://github.com/jonathanhefner)
+- [Tadas Antanavicius](https://github.com/tadasant)
+
+## Working Groups
+
+### Security Working Group
+
+- [Den Delimarsky](https://github.com/dend)
+- [Paul Carleton](https://github.com/pcarleton)
+- [Jenn Newton](https://github.com/jenn-newton)
+
+### Authorization Working Group
+
+- [Aaron Parecki](https://github.com/aaronpk)
+- [Darin McAdams](https://github.com/D-McAdams)
+- [Paul Carleton](https://github.com/pcarleton)
+
+### Client Implementor Working Group
+
+- [Michael Feldstein](https://github.com/msfeldstein)
+- [Harald Kirschner](https://github.com/digitarald)
+- [Connor Peet](https://github.com/connor4312)
+
+## About This Document
+
+This document is updated by the MCP maintainers and reflects the current
+governance structure. For more information about MCP governance, see our
+[governance documentation](https://modelcontextprotocol.io/community/governance).

docs/community/governance.mdx

@@ -144,3 +144,7 @@ The MCP project maintains a public Discord server with open chats for interest g
 - Nick Aldridge
 - Che Liu
 - Den Delimarsky
+
+## Current Maintainers and Working Groups
+
+Refer to [the maintainer list](https://github.com/modelcontextprotocol/modelcontextprotocol/blob/main/MAINTAINERS.md).

docs/community/sep-guidelines.mdx

@@ -45,7 +45,7 @@ Each SEP must have an **SEP author** -- someone who writes the SEP using the sty
 SEPs should be submitted as a GitHub Issue in the [specification repository](https://github.com/modelcontextprotocol/modelcontextprotocol). The standard SEP workflow is:
 
 1. You, the SEP author, create a [well-formatted](#sep-format) GitHub Issue with the `SEP` and `proposal` tags. The SEP number is the same as the Github Issue number, the two can be used interchangably.
-2. Find a Core Maintainer or Maintainer to sponsor your proposal. Core Maintainers and Maintainers will regularly go over the list of open proposals to determine which proposals to sponsor.
+2. Core Maintainers and Maintainers will regularly go over the list of open proposals to determine which proposals to sponsor. You can tag relevant maintainers from [the maintainer list](https://github.com/modelcontextprotocol/modelcontextprotocol/blob/main/MAINTAINERS.md) in your proposal.
 3. Once a sponsor is found, the GitHub Issue is assigned to the sponsor. The sponsor will add the `draft` tag, ensure the SEP number is in the title, and assign a milestone.
 4. The sponsor will informally review the proposal and may request changes based on community feedback. When ready for formal review, the sponsor will add the `in-review` tag.
 5. After the `in-review` tag is added, the SEP enters formal review by the Core Maintainers team. The SEP may be accepted, rejected, or returned for revision.