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ihrpr merged 7 commits into from
Jun 17, 2025
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changelog additions #768

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changelog additions
bhosmer-ant Jun 17, 2025
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format
bhosmer-ant Jun 17, 2025
3b4d896
format clients.mdx
bhosmer-ant Jun 17, 2025
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add change, remove nbsp
bhosmer-ant Jun 17, 2025
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FORMAT
bhosmer-ant Jun 17, 2025
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present tense fix
bhosmer-ant Jun 17, 2025
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Merge branch 'main' into basil/changelog_additions
bhosmer-ant Jun 17, 2025
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21 changes: 15 additions & 6 deletions docs/specification/draft/changelog.mdx
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Expand Up @@ -9,26 +9,35 @@ the previous revision, [2025-03-26](/specification/2025-03-26).

## Major changes

1. Removed support for JSON-RPC **[batching](https://www.jsonrpc.org/specification#batch)**
1. Remove support for JSON-RPC **[batching](https://www.jsonrpc.org/specification#batch)**
(PR [#416](https://github.com/modelcontextprotocol/specification/pull/416))
2. Added support for [structured tool output](/specification/draft/server/tools#structured-content)
2. Add support for [structured tool output](/specification/draft/server/tools#structured-content)
(PR [#371](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/371))
3. Classified MCP servers as [OAuth Resource Servers](/specification/draft/basic/authorization#authorization-server-discovery),
3. Classify MCP servers as [OAuth Resource Servers](/specification/draft/basic/authorization#authorization-server-discovery),
adding protected resource metadata to discover the corresponding Authorization server.
(PR [#338](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/338))
4. Require MCP clients to implement Resource Indicators as described in [RFC 8707](https://www.rfc-editor.org/rfc/rfc8707.html) to prevent
malicious servers from obtaining access tokens.
(PR [#734](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/734))
5. Clarified [security considerations](/specification/draft/basic/authorization#security-considerations) and best practices
5. Clarify [security considerations](/specification/draft/basic/authorization#security-considerations) and best practices
in the authorization spec and in a new [security best practices page](/specification/draft/basic/security_best_practices).
6. Added support for **[elicitation](/specification/draft/client/elicitation)**, enabling servers to request additional
6. Add support for **[elicitation](/specification/draft/client/elicitation)**, enabling servers to request additional
information from users during interactions.
(PR [#382](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/382))
7. Added support for **[resource links](/specification/draft/server/tools#resource-links)** in
7. Add support for **[resource links](/specification/draft/server/tools#resource-links)** in
tool call results. (PR [#603](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/603))
8. Require [negotiated protocol version to be specified](/specification/draft/basic/transports#protocol-version-header)
via `MCP-Protocol-Version` header in subsequent requests when using HTTP (PR [#548](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/548)).

## Other schema changes

1. Add `_meta` field to additional interface types (PR [#710](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/710)),
and specify [proper usage](/specification/draft/basic#meta).
2. Add `context` field to `CompletionRequest`, providing for completion requests to include
previously-resolved variables (PR [#598](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/598)).
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3. Add `title` field for human-friendly display names, so that `name` can be used as a programmatic
identifier (PR [#663](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/663))

## Full changelog

For a complete list of all changes that have been made since the last protocol revision,
Expand Down