feat: add remaining toolbox server flag by Yuan325 · Pull Request #2272 · googleapis/mcp-toolbox

Yuan325 · 2026-01-07T21:51:10Z

Add remaining CLI flags for the server published on official mcp registry.

ref: https://googleapis.github.io/genai-toolbox/reference/cli/

note: mcp registry do not support shorthand flag (there are no options to defined an alternate name). The only way is to define them as separate named arguments but it may not work well since both would try to set the same underlying value.

gemini-code-assist · 2026-01-07T21:51:23Z

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 significantly expands the command-line interface for the genai-toolbox server by incorporating a comprehensive set of new flags. These additions enhance the server's configurability, offering greater control over tool loading, logging formats, telemetry integration, and overall operational behavior, aligning with the official MCP registry specifications.

Highlights

Tool Configuration Flags: Added new CLI flags, --tools-files and --tools-folder, to allow for more flexible specification of tool configurations from multiple files or an entire directory.
Logging and Server Behavior Control: Introduced --logging-format for choosing between standard and JSON logging, and --disable-reload to control dynamic reloading of tool files. Flags like --stdio for MCP STDIO listening and --ui for launching the web server were also added.
Telemetry Integration: Implemented several telemetry-related flags, including --telemetry-gcp for Google Cloud Monitoring, --telemetry-otlp for OpenTelemetry Protocol, and --telemetry-service-name to customize service identification.
General Utility Flags: Standard command-line utility flags --help and --version have been added for better user experience and information retrieval.

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Code Review

This pull request adds the remaining CLI flags for the server to the server.json manifest, which is used by the MCP registry. The changes look good overall. My feedback focuses on improving the descriptions of the newly added flags for better clarity, usability, and to highlight a security consideration.

Add remaining CLI flags for the server published on official mcp registry. ref: https://googleapis.github.io/genai-toolbox/reference/cli/ _note: mcp registry do not support shorthand flag (there are no options to defined an alternate name). The only way is to define them as separate named arguments but it may not work well since both would try to set the same underlying value._

🤖 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 remaining CLI flags for the server published on official mcp registry. ref: https://googleapis.github.io/genai-toolbox/reference/cli/ _note: mcp registry do not support shorthand flag (there are no options to defined an alternate name). The only way is to define them as separate named arguments but it may not work well since both would try to set the same underlying value._

🤖 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 7, 2026 21:51

blunderbuss-gcf Bot assigned duwenxin99 Jan 7, 2026

gemini-code-assist Bot reviewed Jan 7, 2026

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Yuan325 force-pushed the registry-toolbox-flag branch 2 times, most recently from 42b0d55 to 95d79b8 Compare January 7, 2026 21:54

Yuan325 added 2 commits January 9, 2026 10:55

feat: add remaining toolbox server flag

ec11b06

bump publish version

1542566

Yuan325 force-pushed the registry-toolbox-flag branch from b4d156d to 1542566 Compare January 9, 2026 18:57

Yuan325 added 2 commits January 12, 2026 15:56

Merge branch 'main' into registry-toolbox-flag

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Merge branch 'main' into registry-toolbox-flag

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Yuan325 force-pushed the registry-toolbox-flag branch from 3990123 to 72cbbe3 Compare January 13, 2026 19:46

averikitsch approved these changes Jan 14, 2026

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Merge branch 'main' into registry-toolbox-flag

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Yuan325 enabled auto-merge (squash) January 15, 2026 19:08

Yuan325 merged commit 5e0999e into main Jan 15, 2026
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Yuan325 deleted the registry-toolbox-flag branch January 15, 2026 19:30

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

chore(main): release 0.26.0 #2286

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BrewTestBot mentioned this pull request Jan 23, 2026

mcp-toolbox 0.26.0 Homebrew/homebrew-core#264117

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feat: add remaining toolbox server flag#2272

feat: add remaining toolbox server flag#2272
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Yuan325 commented Jan 7, 2026 •

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Yuan325 commented Jan 7, 2026 •

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