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v1.12.0

googleapis/mcp-toolboxv1.12.0Sep 17, 2026by release-please[bot]

Upgrading?

What changed from v1.11.0 → v1.12.0?What's new in core@13.3.0 after v1.12.0?

AI Summary

This release adds support for serving OpenAI app challenges and exposes certification metadata in Looker tools. It also includes critical bug fixes for connection handling and parameter validation in various sources and tools.

Key Highlights

  • Added logic to serve /.well-known/openai-apps-challenge endpoint.
  • Exposed certification_metadata in Looker dashboard and look tools.
  • Fixed connection handle release failures for CockroachDB and Redis sources.
  • Updated Looker embed URL generation to strictly require embed parameters.

Breaking Changes

  • tool/looker-generate-embed-url: Now requires embed parameters.

New Features

  • Serve /.well-known/openai-apps-challenge
  • Expose certification_metadata in Looker tools

Full Release Notes

## [1.12.0](https://github.com/googleapis/mcp-toolbox/compare/v1.11.0...v1.12.0) (2026-09-17)


### Features

* Added logic to serve /.well-known/openai-apps-challenge ([#4038](https://github.com/googleapis/mcp-toolbox/issues/4038)) ([7ac00a2](https://github.com/googleapis/mcp-toolbox/commit/7ac00a2dc940b0e6e07e2b75ca79fef08bd87d77))
* **tool/looker:** Expose certification_metadata in looker dashboard and look tools ([#4041](https://github.com/googleapis/mcp-toolbox/issues/4041)) ([ed42084](https://github.com/googleapis/mcp-toolbox/commit/ed420847be0d86209f5505f4a436ca7963eb3fc3))


### Bug Fixes

* **prebuilt/cloud-sql-postgres:** Clarify execute_sql tool description ([#3884](https://github.com/googleapis/mcp-toolbox/issues/3884)) ([ed4cfde](https://github.com/googleapis/mcp-toolbox/commit/ed4cfde6d6d5133120a9ed6811aab8947f3eb540))
* **source/cockroachdb,source/redis:** Release the handle when a connect attempt fails ([#3933](https://github.com/googleapis/mcp-toolbox/issues/3933)) ([2d52f8a](https://github.com/googleapis/mcp-toolbox/commit/2d52f8aee5e0d373db30dc7d70bca175570dd29e))
* **tool/looker-generate-embed-url:** Require embed parameters ([#3913](https://github.com/googleapis/mcp-toolbox/issues/3913)) ([93520cf](https://github.com/googleapis/mcp-toolbox/commit/93520cf4ab4059ec4c1ed77f25bf3a836d3192c6))
* **tools/looker:** Add additional annotations to support OpenAI plugins ([#4035](https://github.com/googleapis/mcp-toolbox/issues/4035)) ([7b41e73](https://github.com/googleapis/mcp-toolbox/commit/7b41e73c3f7486afe55022fbcb437e26e931b8d0))

| **OS/Architecture**                                                                                       | **Description**                                                                                                          | **SHA256 Hash**                                                     |
| --------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------- |
| [linux/amd64](https://storage.googleapis.com/mcp-toolbox-for-databases/v1.12.0/linux/amd64/toolbox) ([Signature](https://storage.googleapis.com/mcp-toolbox-for-databases/v1.12.0/linux/amd64/toolbox.asc)) | For **Linux** systems running on **Intel/AMD 64-bit processors**.                                                        | 69c1b1a7a74dcd2442dd1281e97030a9b9913e2fb221bf31961f9b9ada000543    |
| [darwin/arm64](https://storage.googleapis.com/mcp-toolbox-for-databases/v1.12.0/darwin/arm64/toolbox)     | For **macOS** systems running on **Apple Silicon** (M1, M2, M3, etc.) processors.                                        | 524ed5a0e8ca0d6660270523bc345c52ae2cff6104088a37e5790e7fed72df1d    |
| [darwin/amd64](https://storage.googleapis.com/mcp-toolbox-for-databases/v1.12.0/darwin/amd64/toolbox)     | For **macOS** systems running on **Intel processors**.                                                                   | 7f5bb2b1e1ab6f8fa8bb4b51fe14b10274f17a906e1f1084fbf400b6d6bdc5a9    |
| [windows/amd64](https://storage.googleapis.com/mcp-toolbox-for-databases/v1.12.0/windows/amd64/toolbox.exe) | For **Windows** systems running on **Intel/AMD 64-bit processors**.                                                      | c8d382ed597596f96aa015bf8ab5aaad557eb831d342813b8312fc582aa040f6    |
| [windows/arm64](https://storage.googleapis.com/mcp-toolbox-for-databases/v1.12.0/windows/arm64/toolbox.exe) | For **Windows** systems running on **ARM 64-bit processors**.                                                            | a0d152a1158d32d8a9df071e52277a59b7a79d1a50c044ee36b9907eb57a7003    |

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