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feat: add new user-agent-metadata flag#2302

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Yuan325 merged 3 commits into
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useragent-metadata
Jan 20, 2026
Merged

feat: add new user-agent-metadata flag#2302
Yuan325 merged 3 commits into
mainfrom
useragent-metadata

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@Yuan325

@Yuan325 Yuan325 commented Jan 13, 2026

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Description

Add a new --user-agent-metadata flag that allows user to append additional user agent metadata. The flag takes in []string and will concatenate it with ..

go run . --user-agent-metadata=foo

produces 0.25.0+dev.darwin.arm64+foo user agent string

go run . --user-agent-metadata=foo,bar

produces 0.25.0+dev.darwin.arm64+foo+bar user agent string

PR Checklist

Thank you for opening a Pull Request! Before submitting your PR, there are a
few things you can do to make sure it goes smoothly:

  • Make sure you reviewed
    CONTRIBUTING.md
  • Make sure to open an issue as a
    bug/issue
    before writing your code! That way we can discuss the change, evaluate
    designs, and agree on the general idea
  • Ensure the tests and linter pass
  • Code coverage does not decrease (if any source code was changed)
  • Appropriate docs were updated (if necessary)
  • Make sure to add ! if this involve a breaking change

🛠️ Fixes #<issue_number_goes_here>

@Yuan325 Yuan325 requested a review from a team January 13, 2026 18:53
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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 enhances the application's command-line interface by introducing a new flag, --user-agent-extra. This flag provides users with the ability to append custom, dot-separated metadata to the User-Agent string, offering greater flexibility for identifying or categorizing client requests.

Highlights

  • New Command-Line Flag: Introduced --user-agent-extra to allow users to append custom metadata to the application's User-Agent string.
  • User-Agent Customization: The flag accepts multiple string values, which are concatenated with a . separator and appended to the existing User-Agent.
  • Configuration Integration: The new UserAgentExtra field is added to the ServerConfig struct and integrated into the User-Agent generation logic within InitializeConfigs.

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Code Review

This pull request introduces a new --user-agent-extra flag to append custom metadata to the User-Agent string. The changes are well-contained and the new flag is a good addition for tracking purposes. I've found one high-severity issue where an extra + is appended to the user agent when no extra metadata is provided, and I've suggested a fix. I also left a medium-severity comment to improve a code comment for better clarity and consistency. Overall, great work!

Comment thread internal/server/server.go Outdated
Comment thread internal/server/config.go Outdated
@Yuan325 Yuan325 force-pushed the useragent-metadata branch 3 times, most recently from 60750cc to 0534511 Compare January 13, 2026 18:59
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@Yuan325 Yuan325 force-pushed the useragent-metadata branch from 0534511 to 392490d Compare January 13, 2026 19:44
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Comment thread cmd/root.go Outdated
Comment thread internal/server/server.go Outdated
@Yuan325 Yuan325 force-pushed the useragent-metadata branch from 4a963cc to cb27a8d Compare January 16, 2026 01:21
@Yuan325 Yuan325 requested a review from averikitsch January 16, 2026 01:23
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@Yuan325 Yuan325 changed the title feat: add new user-agent-extra flag feat: add new user-agent-metadata flag Jan 16, 2026
@Yuan325 Yuan325 force-pushed the useragent-metadata branch from cb27a8d to a4657da Compare January 16, 2026 01:56
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@Yuan325 Yuan325 enabled auto-merge (squash) January 20, 2026 19:20
@Yuan325 Yuan325 merged commit adc9589 into main Jan 20, 2026
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@Yuan325 Yuan325 deleted the useragent-metadata branch January 20, 2026 19:23
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🧨 Preview deployments removed.

github-actions Bot pushed a commit that referenced this pull request Jan 20, 2026
## Description

Add a new `--user-agent-metadata` flag that allows user to append
additional user agent metadata. The flag takes in []string and will
concatenate it with `.`.

```
go run . --user-agent-metadata=foo
```
 produces `0.25.0+dev.darwin.arm64+foo` user agent string

```
go run . --user-agent-metadata=foo,bar
```
produces `0.25.0+dev.darwin.arm64+foo+bar` user agent string

## PR Checklist

> Thank you for opening a Pull Request! Before submitting your PR, there
are a
> few things you can do to make sure it goes smoothly:

- [x] Make sure you reviewed

[CONTRIBUTING.md](https://github.com/googleapis/genai-toolbox/blob/main/CONTRIBUTING.md)
- [x] Make sure to open an issue as a

[bug/issue](https://github.com/googleapis/genai-toolbox/issues/new/choose)
  before writing your code! That way we can discuss the change, evaluate
  designs, and agree on the general idea
- [x] Ensure the tests and linter pass
- [x] Code coverage does not decrease (if any source code was changed)
- [x] Appropriate docs were updated (if necessary)
- [x] Make sure to add `!` if this involve a breaking change

🛠️ Fixes #<issue_number_goes_here> adc9589
github-actions Bot pushed a commit to renovate-bot/googleapis-_-genai-toolbox that referenced this pull request Jan 20, 2026
## Description

Add a new `--user-agent-metadata` flag that allows user to append
additional user agent metadata. The flag takes in []string and will
concatenate it with `.`.

```
go run . --user-agent-metadata=foo
```
 produces `0.25.0+dev.darwin.arm64+foo` user agent string

```
go run . --user-agent-metadata=foo,bar
```
produces `0.25.0+dev.darwin.arm64+foo+bar` user agent string

## PR Checklist

> Thank you for opening a Pull Request! Before submitting your PR, there
are a
> few things you can do to make sure it goes smoothly:

- [x] Make sure you reviewed

[CONTRIBUTING.md](https://github.com/googleapis/genai-toolbox/blob/main/CONTRIBUTING.md)
- [x] Make sure to open an issue as a

[bug/issue](https://github.com/googleapis/genai-toolbox/issues/new/choose)
  before writing your code! That way we can discuss the change, evaluate
  designs, and agree on the general idea
- [x] Ensure the tests and linter pass
- [x] Code coverage does not decrease (if any source code was changed)
- [x] Appropriate docs were updated (if necessary)
- [x] Make sure to add `!` if this involve a breaking change

🛠️ Fixes #<issue_number_goes_here> adc9589
github-actions Bot pushed a commit to CrazyForks/genai-toolbox that referenced this pull request Jan 21, 2026
## Description

Add a new `--user-agent-metadata` flag that allows user to append
additional user agent metadata. The flag takes in []string and will
concatenate it with `.`.

```
go run . --user-agent-metadata=foo
```
 produces `0.25.0+dev.darwin.arm64+foo` user agent string

```
go run . --user-agent-metadata=foo,bar
```
produces `0.25.0+dev.darwin.arm64+foo+bar` user agent string

## PR Checklist

> Thank you for opening a Pull Request! Before submitting your PR, there
are a
> few things you can do to make sure it goes smoothly:

- [x] Make sure you reviewed

[CONTRIBUTING.md](https://github.com/googleapis/genai-toolbox/blob/main/CONTRIBUTING.md)
- [x] Make sure to open an issue as a

[bug/issue](https://github.com/googleapis/genai-toolbox/issues/new/choose)
  before writing your code! That way we can discuss the change, evaluate
  designs, and agree on the general idea
- [x] Ensure the tests and linter pass
- [x] Code coverage does not decrease (if any source code was changed)
- [x] Appropriate docs were updated (if necessary)
- [x] Make sure to add `!` if this involve a breaking change

🛠️ Fixes #<issue_number_goes_here> adc9589
github-actions Bot pushed a commit to bhardwajRahul/genai-toolbox that referenced this pull request Jan 21, 2026
## Description

Add a new `--user-agent-metadata` flag that allows user to append
additional user agent metadata. The flag takes in []string and will
concatenate it with `.`.

```
go run . --user-agent-metadata=foo
```
 produces `0.25.0+dev.darwin.arm64+foo` user agent string

```
go run . --user-agent-metadata=foo,bar
```
produces `0.25.0+dev.darwin.arm64+foo+bar` user agent string

## PR Checklist

> Thank you for opening a Pull Request! Before submitting your PR, there
are a
> few things you can do to make sure it goes smoothly:

- [x] Make sure you reviewed

[CONTRIBUTING.md](https://github.com/googleapis/genai-toolbox/blob/main/CONTRIBUTING.md)
- [x] Make sure to open an issue as a

[bug/issue](https://github.com/googleapis/genai-toolbox/issues/new/choose)
  before writing your code! That way we can discuss the change, evaluate
  designs, and agree on the general idea
- [x] Ensure the tests and linter pass
- [x] Code coverage does not decrease (if any source code was changed)
- [x] Appropriate docs were updated (if necessary)
- [x] Make sure to add `!` if this involve a breaking change

🛠️ Fixes #<issue_number_goes_here> adc9589
github-actions Bot pushed a commit to TheTechOddBug/genai-toolbox that referenced this pull request Jan 21, 2026
## Description

Add a new `--user-agent-metadata` flag that allows user to append
additional user agent metadata. The flag takes in []string and will
concatenate it with `.`.

```
go run . --user-agent-metadata=foo
```
 produces `0.25.0+dev.darwin.arm64+foo` user agent string

```
go run . --user-agent-metadata=foo,bar
```
produces `0.25.0+dev.darwin.arm64+foo+bar` user agent string

## PR Checklist

> Thank you for opening a Pull Request! Before submitting your PR, there
are a
> few things you can do to make sure it goes smoothly:

- [x] Make sure you reviewed

[CONTRIBUTING.md](https://github.com/googleapis/genai-toolbox/blob/main/CONTRIBUTING.md)
- [x] Make sure to open an issue as a

[bug/issue](https://github.com/googleapis/genai-toolbox/issues/new/choose)
  before writing your code! That way we can discuss the change, evaluate
  designs, and agree on the general idea
- [x] Ensure the tests and linter pass
- [x] Code coverage does not decrease (if any source code was changed)
- [x] Appropriate docs were updated (if necessary)
- [x] Make sure to add `!` if this involve a breaking change

🛠️ Fixes #<issue_number_goes_here> adc9589
mahlevanshika pushed a commit to mahlevanshika/genai-toolbox that referenced this pull request Jan 22, 2026
## Description

Add a new `--user-agent-metadata` flag that allows user to append
additional user agent metadata. The flag takes in []string and will
concatenate it with `.`.

```
go run . --user-agent-metadata=foo
```
 produces `0.25.0+dev.darwin.arm64+foo` user agent string

```
go run . --user-agent-metadata=foo,bar
```
produces `0.25.0+dev.darwin.arm64+foo+bar` user agent string

## PR Checklist

> Thank you for opening a Pull Request! Before submitting your PR, there
are a
> few things you can do to make sure it goes smoothly:

- [x] Make sure you reviewed

[CONTRIBUTING.md](https://github.com/googleapis/genai-toolbox/blob/main/CONTRIBUTING.md)
- [x] Make sure to open an issue as a

[bug/issue](https://github.com/googleapis/genai-toolbox/issues/new/choose)
  before writing your code! That way we can discuss the change, evaluate
  designs, and agree on the general idea
- [x] Ensure the tests and linter pass
- [x] Code coverage does not decrease (if any source code was changed)
- [x] Appropriate docs were updated (if necessary)
- [x] Make sure to add `!` if this involve a breaking change

🛠️ Fixes #<issue_number_goes_here>
Yuan325 added a commit that referenced this pull request Jan 23, 2026
🤖 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>
github-actions Bot pushed a commit that referenced this pull request Jan 23, 2026
🤖 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
github-actions Bot pushed a commit to renovate-bot/googleapis-_-genai-toolbox that referenced this pull request Jan 23, 2026
🤖 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
github-actions Bot pushed a commit to Jaleel-zhu/genai-toolbox that referenced this pull request Jan 23, 2026
🤖 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
github-actions Bot pushed a commit to NirajNandre/genai-toolbox-fork that referenced this pull request Jan 23, 2026
🤖 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
github-actions Bot pushed a commit to CrazyForks/genai-toolbox that referenced this pull request Jan 23, 2026
🤖 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
github-actions Bot pushed a commit to bhardwajRahul/genai-toolbox that referenced this pull request Jan 25, 2026
🤖 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
github-actions Bot pushed a commit to TheTechOddBug/genai-toolbox that referenced this pull request Jan 25, 2026
🤖 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
dennisg pushed a commit to dennisg/genai-toolbox that referenced this pull request Jan 29, 2026
🤖 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>
kshalu-code pushed a commit to kshalu-code/genai-toolbox that referenced this pull request Feb 4, 2026
## Description

Add a new `--user-agent-metadata` flag that allows user to append
additional user agent metadata. The flag takes in []string and will
concatenate it with `.`.

```
go run . --user-agent-metadata=foo
```
 produces `0.25.0+dev.darwin.arm64+foo` user agent string

```
go run . --user-agent-metadata=foo,bar
```
produces `0.25.0+dev.darwin.arm64+foo+bar` user agent string

## PR Checklist

> Thank you for opening a Pull Request! Before submitting your PR, there
are a
> few things you can do to make sure it goes smoothly:

- [x] Make sure you reviewed

[CONTRIBUTING.md](https://github.com/googleapis/genai-toolbox/blob/main/CONTRIBUTING.md)
- [x] Make sure to open an issue as a

[bug/issue](https://github.com/googleapis/genai-toolbox/issues/new/choose)
  before writing your code! That way we can discuss the change, evaluate
  designs, and agree on the general idea
- [x] Ensure the tests and linter pass
- [x] Code coverage does not decrease (if any source code was changed)
- [x] Appropriate docs were updated (if necessary)
- [x] Make sure to add `!` if this involve a breaking change

🛠️ Fixes #<issue_number_goes_here>
kshalu-code pushed a commit to kshalu-code/genai-toolbox that referenced this pull request Feb 4, 2026
🤖 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>
dumians pushed a commit to dumians/genai-toolbox that referenced this pull request Feb 18, 2026
🤖 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>
NightStack15 added a commit to NightStack15/googleapis-_-genai-toolbox that referenced this pull request Mar 20, 2026
🤖 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>
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3 participants