feat: add new v20251125 version by Yuan325 · Pull Request #2303 · googleapis/mcp-toolbox

Yuan325 · 2026-01-13T21:35:32Z

Add new v20251125 specs for MCP. https://modelcontextprotocol.io/specification/2025-11-25

gemini-code-assist · 2026-01-13T21:35:50Z

Summary of Changes

Hello @Yuan325, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request integrates the latest v20251125 version of the Model Context Protocol (MCP) into the system. It involves adding the necessary code to handle requests for this new protocol, updating the list of supported versions, and ensuring the documentation reflects this enhancement. This change expands the system's compatibility with newer MCP specifications.

Highlights

New MCP Protocol Version: Introduced support for the v20251125 Model Context Protocol (MCP) specification.
Core Logic Integration: Updated the main MCP server logic to recognize and route requests for the new v20251125 protocol version.
Documentation Update: The connect_via_mcp.md documentation has been updated to list 2025-11-25 as a newly supported MCP specification.

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Code Review

This pull request adds support for the new MCP specification version v20251125. The changes are well-structured and include updates to documentation, constants, and the addition of new files for the new version's implementation. My review includes a few suggestions on the newly added files to improve code clarity, logging, and robustness. Overall, the changes are solid.

github-actions · 2026-01-13T21:42:02Z

🔎 Preview at https://googleapis.github.io/genai-toolbox/previews/PR-2303/

github-actions · 2026-01-13T21:55:12Z

🔎 Preview at https://googleapis.github.io/genai-toolbox/previews/PR-2303/

github-actions · 2026-01-15T19:52:47Z

🔎 Preview at https://googleapis.github.io/genai-toolbox/previews/PR-2303/

github-actions · 2026-01-15T20:15:22Z

🧨 Preview deployments removed.

Add new `v20251125` specs for MCP. https://modelcontextprotocol.io/specification/2025-11-25 4d23a3b

Add new `v20251125` specs for MCP. https://modelcontextprotocol.io/specification/2025-11-25

🤖 I have created a release *beep* *boop* --- ## [0.26.0](v0.25.0...v0.26.0) (2026-01-22) ### ⚠ BREAKING CHANGES * Validate tool naming ([#2305](#2305)) ([5054212](5054212)) * **tools/cloudgda:** Update description and parameter name for cloudgda tool ([#2288](#2288)) ([6b02591](6b02591)) ### Features * Add new `user-agent-metadata` flag ([#2302](#2302)) ([adc9589](adc9589)) * Add remaining flag to Toolbox server in MCP registry ([#2272](#2272)) ([5e0999e](5e0999e)) * **embeddingModel:** Add embedding model to MCP handler ([#2310](#2310)) ([e4f60e5](e4f60e5)) * **sources/bigquery:** Make maximum rows returned from queries configurable ([#2262](#2262)) ([4abf0c3](4abf0c3)) * **prebuilt/cloud-sql:** Add create backup tool for Cloud SQL ([#2141](#2141)) ([8e0fb03](8e0fb03)) * **prebuilt/cloud-sql:** Add restore backup tool for Cloud SQL ([#2171](#2171)) ([00c3e6d](00c3e6d)) * Support combining multiple prebuilt configurations ([#2295](#2295)) ([e535b37](e535b37)) * Support MCP specs version 2025-11-25 ([#2303](#2303)) ([4d23a3b](4d23a3b)) * **tools:** Add `valueFromParam` support to Tool config ([#2333](#2333)) ([15101b1](15101b1)) ### Bug Fixes * **tools/cloudhealthcare:** Add check for client authorization before retrieving token string ([#2327](#2327)) ([c25a233](c25a233)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). --------- Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com> Co-authored-by: Yuan Teoh <45984206+Yuan325@users.noreply.github.com>

🤖 I have created a release *beep* *boop* --- ## [0.26.0](v0.25.0...v0.26.0) (2026-01-22) ### ⚠ BREAKING CHANGES * Validate tool naming ([#2305](#2305)) ([5054212](5054212)) * **tools/cloudgda:** Update description and parameter name for cloudgda tool ([#2288](#2288)) ([6b02591](6b02591)) ### Features * Add new `user-agent-metadata` flag ([#2302](#2302)) ([adc9589](adc9589)) * Add remaining flag to Toolbox server in MCP registry ([#2272](#2272)) ([5e0999e](5e0999e)) * **embeddingModel:** Add embedding model to MCP handler ([#2310](#2310)) ([e4f60e5](e4f60e5)) * **sources/bigquery:** Make maximum rows returned from queries configurable ([#2262](#2262)) ([4abf0c3](4abf0c3)) * **prebuilt/cloud-sql:** Add create backup tool for Cloud SQL ([#2141](#2141)) ([8e0fb03](8e0fb03)) * **prebuilt/cloud-sql:** Add restore backup tool for Cloud SQL ([#2171](#2171)) ([00c3e6d](00c3e6d)) * Support combining multiple prebuilt configurations ([#2295](#2295)) ([e535b37](e535b37)) * Support MCP specs version 2025-11-25 ([#2303](#2303)) ([4d23a3b](4d23a3b)) * **tools:** Add `valueFromParam` support to Tool config ([#2333](#2333)) ([15101b1](15101b1)) ### Bug Fixes * **tools/cloudhealthcare:** Add check for client authorization before retrieving token string ([#2327](#2327)) ([c25a233](c25a233)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). --------- Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com> Co-authored-by: Yuan Teoh <45984206+Yuan325@users.noreply.github.com> 86bf7bf

🤖 I have created a release *beep* *boop* --- ## [0.26.0](googleapis/mcp-toolbox@v0.25.0...v0.26.0) (2026-01-22) ### ⚠ BREAKING CHANGES * Validate tool naming ([googleapis#2305](googleapis#2305)) ([5054212](googleapis@5054212)) * **tools/cloudgda:** Update description and parameter name for cloudgda tool ([googleapis#2288](googleapis#2288)) ([6b02591](googleapis@6b02591)) ### Features * Add new `user-agent-metadata` flag ([googleapis#2302](googleapis#2302)) ([adc9589](googleapis@adc9589)) * Add remaining flag to Toolbox server in MCP registry ([googleapis#2272](googleapis#2272)) ([5e0999e](googleapis@5e0999e)) * **embeddingModel:** Add embedding model to MCP handler ([googleapis#2310](googleapis#2310)) ([e4f60e5](googleapis@e4f60e5)) * **sources/bigquery:** Make maximum rows returned from queries configurable ([googleapis#2262](googleapis#2262)) ([4abf0c3](googleapis@4abf0c3)) * **prebuilt/cloud-sql:** Add create backup tool for Cloud SQL ([googleapis#2141](googleapis#2141)) ([8e0fb03](googleapis@8e0fb03)) * **prebuilt/cloud-sql:** Add restore backup tool for Cloud SQL ([googleapis#2171](googleapis#2171)) ([00c3e6d](googleapis@00c3e6d)) * Support combining multiple prebuilt configurations ([googleapis#2295](googleapis#2295)) ([e535b37](googleapis@e535b37)) * Support MCP specs version 2025-11-25 ([googleapis#2303](googleapis#2303)) ([4d23a3b](googleapis@4d23a3b)) * **tools:** Add `valueFromParam` support to Tool config ([googleapis#2333](googleapis#2333)) ([15101b1](googleapis@15101b1)) ### Bug Fixes * **tools/cloudhealthcare:** Add check for client authorization before retrieving token string ([googleapis#2327](googleapis#2327)) ([c25a233](googleapis@c25a233)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). --------- Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com> Co-authored-by: Yuan Teoh <45984206+Yuan325@users.noreply.github.com> 86bf7bf

🤖 I have created a release *beep* *boop* --- ## [0.26.0](googleapis/mcp-toolbox@v0.25.0...v0.26.0) (2026-01-22) ### ⚠ BREAKING CHANGES * Validate tool naming ([googleapis#2305](googleapis#2305)) ([5054212](googleapis@5054212)) * **tools/cloudgda:** Update description and parameter name for cloudgda tool ([googleapis#2288](googleapis#2288)) ([6b02591](googleapis@6b02591)) ### Features * Add new `user-agent-metadata` flag ([googleapis#2302](googleapis#2302)) ([adc9589](googleapis@adc9589)) * Add remaining flag to Toolbox server in MCP registry ([googleapis#2272](googleapis#2272)) ([5e0999e](googleapis@5e0999e)) * **embeddingModel:** Add embedding model to MCP handler ([googleapis#2310](googleapis#2310)) ([e4f60e5](googleapis@e4f60e5)) * **sources/bigquery:** Make maximum rows returned from queries configurable ([googleapis#2262](googleapis#2262)) ([4abf0c3](googleapis@4abf0c3)) * **prebuilt/cloud-sql:** Add create backup tool for Cloud SQL ([googleapis#2141](googleapis#2141)) ([8e0fb03](googleapis@8e0fb03)) * **prebuilt/cloud-sql:** Add restore backup tool for Cloud SQL ([googleapis#2171](googleapis#2171)) ([00c3e6d](googleapis@00c3e6d)) * Support combining multiple prebuilt configurations ([googleapis#2295](googleapis#2295)) ([e535b37](googleapis@e535b37)) * Support MCP specs version 2025-11-25 ([googleapis#2303](googleapis#2303)) ([4d23a3b](googleapis@4d23a3b)) * **tools:** Add `valueFromParam` support to Tool config ([googleapis#2333](googleapis#2333)) ([15101b1](googleapis@15101b1)) ### Bug Fixes * **tools/cloudhealthcare:** Add check for client authorization before retrieving token string ([googleapis#2327](googleapis#2327)) ([c25a233](googleapis@c25a233)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). --------- Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com> Co-authored-by: Yuan Teoh <45984206+Yuan325@users.noreply.github.com>

Add new `v20251125` specs for MCP. https://modelcontextprotocol.io/specification/2025-11-25

🤖 I have created a release *beep* *boop* --- ## [0.26.0](googleapis/mcp-toolbox@v0.25.0...v0.26.0) (2026-01-22) ### ⚠ BREAKING CHANGES * Validate tool naming ([googleapis#2305](googleapis#2305)) ([5054212](googleapis@5054212)) * **tools/cloudgda:** Update description and parameter name for cloudgda tool ([googleapis#2288](googleapis#2288)) ([6b02591](googleapis@6b02591)) ### Features * Add new `user-agent-metadata` flag ([googleapis#2302](googleapis#2302)) ([adc9589](googleapis@adc9589)) * Add remaining flag to Toolbox server in MCP registry ([googleapis#2272](googleapis#2272)) ([5e0999e](googleapis@5e0999e)) * **embeddingModel:** Add embedding model to MCP handler ([googleapis#2310](googleapis#2310)) ([e4f60e5](googleapis@e4f60e5)) * **sources/bigquery:** Make maximum rows returned from queries configurable ([googleapis#2262](googleapis#2262)) ([4abf0c3](googleapis@4abf0c3)) * **prebuilt/cloud-sql:** Add create backup tool for Cloud SQL ([googleapis#2141](googleapis#2141)) ([8e0fb03](googleapis@8e0fb03)) * **prebuilt/cloud-sql:** Add restore backup tool for Cloud SQL ([googleapis#2171](googleapis#2171)) ([00c3e6d](googleapis@00c3e6d)) * Support combining multiple prebuilt configurations ([googleapis#2295](googleapis#2295)) ([e535b37](googleapis@e535b37)) * Support MCP specs version 2025-11-25 ([googleapis#2303](googleapis#2303)) ([4d23a3b](googleapis@4d23a3b)) * **tools:** Add `valueFromParam` support to Tool config ([googleapis#2333](googleapis#2333)) ([15101b1](googleapis@15101b1)) ### Bug Fixes * **tools/cloudhealthcare:** Add check for client authorization before retrieving token string ([googleapis#2327](googleapis#2327)) ([c25a233](googleapis@c25a233)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). --------- Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com> Co-authored-by: Yuan Teoh <45984206+Yuan325@users.noreply.github.com>

🤖 I have created a release *beep* *boop* --- ## [0.26.0](googleapis/mcp-toolbox@v0.25.0...v0.26.0) (2026-01-22) ### ⚠ BREAKING CHANGES * Validate tool naming ([#2305](googleapis/mcp-toolbox#2305)) ([5054212](googleapis/mcp-toolbox@5054212)) * **tools/cloudgda:** Update description and parameter name for cloudgda tool ([#2288](googleapis/mcp-toolbox#2288)) ([6b02591](googleapis/mcp-toolbox@6b02591)) ### Features * Add new `user-agent-metadata` flag ([#2302](googleapis/mcp-toolbox#2302)) ([adc9589](googleapis/mcp-toolbox@adc9589)) * Add remaining flag to Toolbox server in MCP registry ([#2272](googleapis/mcp-toolbox#2272)) ([5e0999e](googleapis/mcp-toolbox@5e0999e)) * **embeddingModel:** Add embedding model to MCP handler ([#2310](googleapis/mcp-toolbox#2310)) ([e4f60e5](googleapis/mcp-toolbox@e4f60e5)) * **sources/bigquery:** Make maximum rows returned from queries configurable ([#2262](googleapis/mcp-toolbox#2262)) ([4abf0c3](googleapis/mcp-toolbox@4abf0c3)) * **prebuilt/cloud-sql:** Add create backup tool for Cloud SQL ([#2141](googleapis/mcp-toolbox#2141)) ([8e0fb03](googleapis/mcp-toolbox@8e0fb03)) * **prebuilt/cloud-sql:** Add restore backup tool for Cloud SQL ([#2171](googleapis/mcp-toolbox#2171)) ([00c3e6d](googleapis/mcp-toolbox@00c3e6d)) * Support combining multiple prebuilt configurations ([#2295](googleapis/mcp-toolbox#2295)) ([e535b37](googleapis/mcp-toolbox@e535b37)) * Support MCP specs version 2025-11-25 ([#2303](googleapis/mcp-toolbox#2303)) ([4d23a3b](googleapis/mcp-toolbox@4d23a3b)) * **tools:** Add `valueFromParam` support to Tool config ([#2333](googleapis/mcp-toolbox#2333)) ([15101b1](googleapis/mcp-toolbox@15101b1)) ### Bug Fixes * **tools/cloudhealthcare:** Add check for client authorization before retrieving token string ([#2327](googleapis/mcp-toolbox#2327)) ([c25a233](googleapis/mcp-toolbox@c25a233)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). --------- Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com> Co-authored-by: Yuan Teoh <45984206+Yuan325@users.noreply.github.com>

Yuan325 requested a review from a team January 13, 2026 21:35

blunderbuss-gcf Bot assigned duwenxin99 Jan 13, 2026

gemini-code-assist Bot reviewed Jan 13, 2026

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Comment thread internal/server/mcp/v20251125/method.go

Comment thread internal/server/mcp/v20251125/method.go

Comment thread internal/server/mcp/v20251125/types.go

Yuan325 force-pushed the mcp-v20251125-init branch from 6d60fba to 337de04 Compare January 13, 2026 21:38

feat: add new v20251125 version

71cb422

Yuan325 force-pushed the mcp-v20251125-init branch from 337de04 to 71cb422 Compare January 13, 2026 21:51

Yuan325 changed the base branch from mcp-v20251125 to main January 13, 2026 22:59

averikitsch approved these changes Jan 14, 2026

View reviewed changes

Merge branch 'main' into mcp-v20251125-init

940ce93

Yuan325 enabled auto-merge (squash) January 15, 2026 19:49

Yuan325 merged commit 4d23a3b into main Jan 15, 2026
13 of 14 checks passed

Yuan325 deleted the mcp-v20251125-init branch January 15, 2026 20:14

release-please Bot mentioned this pull request Jan 15, 2026

chore(main): release 0.26.0 #2286

Merged

github-actions Bot pushed a commit that referenced this pull request Jan 15, 2026

deploy: feat: add new v20251125 version (#2303)

bd46826

Add new `v20251125` specs for MCP. https://modelcontextprotocol.io/specification/2025-11-25 4d23a3b

github-actions Bot pushed a commit to renovate-bot/googleapis-_-genai-toolbox that referenced this pull request Jan 15, 2026

deploy: feat: add new v20251125 version (googleapis#2303)

948e5d2

Add new `v20251125` specs for MCP. https://modelcontextprotocol.io/specification/2025-11-25 4d23a3b

mahlevanshika pushed a commit to mahlevanshika/genai-toolbox that referenced this pull request Jan 22, 2026

feat: add new v20251125 version (googleapis#2303)

48b1eed

Add new `v20251125` specs for MCP. https://modelcontextprotocol.io/specification/2025-11-25

BrewTestBot mentioned this pull request Jan 23, 2026

mcp-toolbox 0.26.0 Homebrew/homebrew-core#264117

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kshalu-code pushed a commit to kshalu-code/genai-toolbox that referenced this pull request Feb 4, 2026

feat: add new v20251125 version (googleapis#2303)

40d8244

Add new `v20251125` specs for MCP. https://modelcontextprotocol.io/specification/2025-11-25

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feat: add new v20251125 version#2303

feat: add new v20251125 version#2303
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