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modelcontextprotocol

Specification and documentation for the Model Context Protocol

typescript
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Description

Specification and documentation for the Model Context Protocol

README

Model Context Protocol (MCP)

Just heard of MCP and not sure where to start? Check out our documentation website.

This repo contains the:

  • MCP specification
  • MCP protocol schema
  • Official MCP documentation

The schema is defined in TypeScript first, but made available as JSON Schema as well, for wider compatibility.

The official MCP documentation is built using Mintlify and available at modelcontextprotocol.io.

Authors

The Model Context Protocol was created by David Soria Parra (@dsp) and Justin Spahr-Summers (@jspahrsummers).

Contributing

See CONTRIBUTING.md.

License

This project is licensed under the MIT License.

Release History

VersionChangesUrgencyDate
2026-07-28This release marks the **stable release** of the `2026-07-28` revision of the Model Context Protocol. The specification is available on the [official Model Context Protocol website](https://modelcontextprotocol.io/specification/2026-07-28). For a detailed overview of changes, see [2026-07-28 changelog](https://modelcontextprotocol.io/specification/2026-07-28/changelog). High7/28/2026
2025-11-25This release marks the **stable release** of the `2025-11-25` revision of the Model Context Protocol. The specification is available on the [official Model Context Protocol website](https://modelcontextprotocol.io/specification/2025-11-25). For a detailed overview of changes, see [2025-11-25 changelog](https://modelcontextprotocol.io/specification/2025-11-25/changelog).Low11/25/2025
2025-11-25-RCThis release marks the **release candidate (RC)** `2025-11-25` revision of the Model Context Protocol. The specification is available in [draft form](https://modelcontextprotocol.io/specification/draft). For a detailed overview of changes, see [2025-11-25 draft changelog](https://modelcontextprotocol.io/specification/draft/changelog). >[!NOTE] >**To users and implementers:** this specification is not final. Changes may be introduced between the RC and the final release. SDKs will adoptLow11/15/2025
2025-06-18This release marks the initial 2025-06-18 revision of the Model Context Protocol. For a detailed overview of changes, see [2025-06-18 changelog](https://modelcontextprotocol.io/specification/2025-06-18/changelog). _To users and implementors:_ note that SDKs will adopt this version at their own pace, and the prior version of the spec may remain in use for an undetermined amount of time. The spec describes how clients and servers perform version negotiation with one another, permitting backwLow6/18/2025
2025-03-26This release marks the initial 2025-03-26 revision of the Model Context Protocol. _To users and implementors:_ note that SDKs will adopt this version at their own pace, and the prior version of the spec may remain in use for an undetermined amount of time. The spec describes how clients and servers perform version negotiation with one another, permitting backwards and forwards compatibility.Low3/26/2025
2024-11-05-finalThis release marks the final 2024-11-05 revision of the Model Context Protocol, including all backwards compatible changes made since [the initial 2024-11-05 release](https://github.com/modelcontextprotocol/specification/releases/tag/2024-11-05).Low3/26/2025
2024-11-05This release marks the initial 2024-11-05 revision of the Model Context Protocol.Low1/17/2025
2024-10-07Final update to version 2024-10-07 of the spec.Low11/6/2024

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More from modelcontextprotocol

python-sdkThe official Python SDK for Model Context Protocol servers and clients
typescript-sdkThe official TypeScript SDK for Model Context Protocol servers and clients
registryA community driven registry service for Model Context Protocol (MCP) servers.
go-sdkThe official Go SDK for Model Context Protocol servers and clients. Maintained in collaboration with Google.

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