fix(tools/looker): scope the filters quoting rule to values in query description - #3788

…n query description (#3788)

## Description

The `filters` guidance in the prebuilt Looker `query` tool description
reads:

```
- filters: A map of filter expressions, e.g., `{"view.field": "value", "view.date": "7 days"}`.
  - Do not quote field names.
```

The rule sits directly beneath an example whose field name **is**
quoted, because JSON map keys have to be. The two read as contradicting
each other.

The instruction isn't wrong as Looker guidance, it's under-scoped: it
means "don't wrap filter *values* in extra quote characters," but
nothing in the text says that. And the mandatory `view_name.field_name`
key format is never stated at all, it's only implied by the shape of a
placeholder. The block contains no *must*, *required*, or *always*, so a
model that omits the view prefix hasn't violated any stated rule.

This matters more than it looks: `filters` is a free-form map, and
Gemini's function-calling schema subset has no construct for it, so the
parameter reaches the model as a bare `OBJECT` with no declared
properties. This prose is the only guidance on key format, so an
ambiguity here has nothing to fall back on.

**Fix:** rewrite the block to state the fully-scoped key requirement
explicitly and to scope the quoting rule to values, matching the
authoritative parameter description already in
`lookercommon.GetQueryParameters`:

```
- filters: A map of filter expressions, e.g., `{"view_name.field_name": "value", "view_name.date": "7 days"}`.
  - Each key must be a fully-scoped `view_name.field_name`, copied verbatim from
    `get_dimensions`, `get_measures`, `get_filters`, or `get_parameters`. The view
    prefix and the dot are required.
  - Each value is a Looker filter expression. Pass values bare: do not wrap them in
    extra quote characters. For LookML `parameter` fields, use the raw allowed_value
    (e.g. `first_touch`, not `"first_touch"`).
  - Use `not null` instead of `-NULL`.
  - If a value contains a comma, enclose it in single quotes (e.g., `'New York, NY'`).
  - To retrieve valid filter values for a suggestible field, use the 'get_field_value_suggestions' tool.
```

Two files: the prebuilt config and the docs page that quotes it
verbatim. Description-only change, no Go source, schema, or runtime
behaviour is touched.

> **Note:** the second, unrelated half of #3786 (description parameter
names not matching the declared schema) is split out into its own PR:
#3789. The two touch nearby lines in `looker.yaml`, so whichever merges
second may need a trivial rebase.

## PR Checklist

- [x] Make sure to open an issue as a bug/issue before writing your
code!
- [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)
- [ ] Make sure to add `!` if this involves a breaking change

`go test ./internal/prebuiltconfigs/...` passes.

Fixes #3786 🦕

Co-authored-by: Dr. Strangelove <drstrangelove@google.com>
Co-authored-by: Yuan Teoh <45984206+Yuan325@users.noreply.github.com> 78eb0b8

…n query description (googleapis#3788)

## Description

The `filters` guidance in the prebuilt Looker `query` tool description
reads:

```
- filters: A map of filter expressions, e.g., `{"view.field": "value", "view.date": "7 days"}`.
  - Do not quote field names.
```

The rule sits directly beneath an example whose field name **is**
quoted, because JSON map keys have to be. The two read as contradicting
each other.

The instruction isn't wrong as Looker guidance, it's under-scoped: it
means "don't wrap filter *values* in extra quote characters," but
nothing in the text says that. And the mandatory `view_name.field_name`
key format is never stated at all, it's only implied by the shape of a
placeholder. The block contains no *must*, *required*, or *always*, so a
model that omits the view prefix hasn't violated any stated rule.

This matters more than it looks: `filters` is a free-form map, and
Gemini's function-calling schema subset has no construct for it, so the
parameter reaches the model as a bare `OBJECT` with no declared
properties. This prose is the only guidance on key format, so an
ambiguity here has nothing to fall back on.

**Fix:** rewrite the block to state the fully-scoped key requirement
explicitly and to scope the quoting rule to values, matching the
authoritative parameter description already in
`lookercommon.GetQueryParameters`:

```
- filters: A map of filter expressions, e.g., `{"view_name.field_name": "value", "view_name.date": "7 days"}`.
  - Each key must be a fully-scoped `view_name.field_name`, copied verbatim from
    `get_dimensions`, `get_measures`, `get_filters`, or `get_parameters`. The view
    prefix and the dot are required.
  - Each value is a Looker filter expression. Pass values bare: do not wrap them in
    extra quote characters. For LookML `parameter` fields, use the raw allowed_value
    (e.g. `first_touch`, not `"first_touch"`).
  - Use `not null` instead of `-NULL`.
  - If a value contains a comma, enclose it in single quotes (e.g., `'New York, NY'`).
  - To retrieve valid filter values for a suggestible field, use the 'get_field_value_suggestions' tool.
```

Two files: the prebuilt config and the docs page that quotes it
verbatim. Description-only change, no Go source, schema, or runtime
behaviour is touched.

> **Note:** the second, unrelated half of googleapis#3786 (description parameter
names not matching the declared schema) is split out into its own PR:
googleapis#3789. The two touch nearby lines in `looker.yaml`, so whichever merges
second may need a trivial rebase.

## PR Checklist

- [x] Make sure to open an issue as a bug/issue before writing your
code!
- [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)
- [ ] Make sure to add `!` if this involves a breaking change

`go test ./internal/prebuiltconfigs/...` passes.

Fixes googleapis#3786 🦕

Co-authored-by: Dr. Strangelove <drstrangelove@google.com>
Co-authored-by: Yuan Teoh <45984206+Yuan325@users.noreply.github.com> 78eb0b8

…n query description (googleapis#3788)

## Description

The `filters` guidance in the prebuilt Looker `query` tool description
reads:

```
- filters: A map of filter expressions, e.g., `{"view.field": "value", "view.date": "7 days"}`.
  - Do not quote field names.
```

The rule sits directly beneath an example whose field name **is**
quoted, because JSON map keys have to be. The two read as contradicting
each other.

The instruction isn't wrong as Looker guidance, it's under-scoped: it
means "don't wrap filter *values* in extra quote characters," but
nothing in the text says that. And the mandatory `view_name.field_name`
key format is never stated at all, it's only implied by the shape of a
placeholder. The block contains no *must*, *required*, or *always*, so a
model that omits the view prefix hasn't violated any stated rule.

This matters more than it looks: `filters` is a free-form map, and
Gemini's function-calling schema subset has no construct for it, so the
parameter reaches the model as a bare `OBJECT` with no declared
properties. This prose is the only guidance on key format, so an
ambiguity here has nothing to fall back on.

**Fix:** rewrite the block to state the fully-scoped key requirement
explicitly and to scope the quoting rule to values, matching the
authoritative parameter description already in
`lookercommon.GetQueryParameters`:

```
- filters: A map of filter expressions, e.g., `{"view_name.field_name": "value", "view_name.date": "7 days"}`.
  - Each key must be a fully-scoped `view_name.field_name`, copied verbatim from
    `get_dimensions`, `get_measures`, `get_filters`, or `get_parameters`. The view
    prefix and the dot are required.
  - Each value is a Looker filter expression. Pass values bare: do not wrap them in
    extra quote characters. For LookML `parameter` fields, use the raw allowed_value
    (e.g. `first_touch`, not `"first_touch"`).
  - Use `not null` instead of `-NULL`.
  - If a value contains a comma, enclose it in single quotes (e.g., `'New York, NY'`).
  - To retrieve valid filter values for a suggestible field, use the 'get_field_value_suggestions' tool.
```

Two files: the prebuilt config and the docs page that quotes it
verbatim. Description-only change, no Go source, schema, or runtime
behaviour is touched.

> **Note:** the second, unrelated half of googleapis#3786 (description parameter
names not matching the declared schema) is split out into its own PR:
googleapis#3789. The two touch nearby lines in `looker.yaml`, so whichever merges
second may need a trivial rebase.

## PR Checklist

- [x] Make sure to open an issue as a bug/issue before writing your
code!
- [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)
- [ ] Make sure to add `!` if this involves a breaking change

`go test ./internal/prebuiltconfigs/...` passes.

Fixes googleapis#3786 🦕

Co-authored-by: Dr. Strangelove <drstrangelove@google.com>
Co-authored-by: Yuan Teoh <45984206+Yuan325@users.noreply.github.com> 78eb0b8

…n query description (googleapis#3788)

## Description

The `filters` guidance in the prebuilt Looker `query` tool description
reads:

```
- filters: A map of filter expressions, e.g., `{"view.field": "value", "view.date": "7 days"}`.
  - Do not quote field names.
```

The rule sits directly beneath an example whose field name **is**
quoted, because JSON map keys have to be. The two read as contradicting
each other.

The instruction isn't wrong as Looker guidance, it's under-scoped: it
means "don't wrap filter *values* in extra quote characters," but
nothing in the text says that. And the mandatory `view_name.field_name`
key format is never stated at all, it's only implied by the shape of a
placeholder. The block contains no *must*, *required*, or *always*, so a
model that omits the view prefix hasn't violated any stated rule.

This matters more than it looks: `filters` is a free-form map, and
Gemini's function-calling schema subset has no construct for it, so the
parameter reaches the model as a bare `OBJECT` with no declared
properties. This prose is the only guidance on key format, so an
ambiguity here has nothing to fall back on.

**Fix:** rewrite the block to state the fully-scoped key requirement
explicitly and to scope the quoting rule to values, matching the
authoritative parameter description already in
`lookercommon.GetQueryParameters`:

```
- filters: A map of filter expressions, e.g., `{"view_name.field_name": "value", "view_name.date": "7 days"}`.
  - Each key must be a fully-scoped `view_name.field_name`, copied verbatim from
    `get_dimensions`, `get_measures`, `get_filters`, or `get_parameters`. The view
    prefix and the dot are required.
  - Each value is a Looker filter expression. Pass values bare: do not wrap them in
    extra quote characters. For LookML `parameter` fields, use the raw allowed_value
    (e.g. `first_touch`, not `"first_touch"`).
  - Use `not null` instead of `-NULL`.
  - If a value contains a comma, enclose it in single quotes (e.g., `'New York, NY'`).
  - To retrieve valid filter values for a suggestible field, use the 'get_field_value_suggestions' tool.
```

Two files: the prebuilt config and the docs page that quotes it
verbatim. Description-only change, no Go source, schema, or runtime
behaviour is touched.

> **Note:** the second, unrelated half of googleapis#3786 (description parameter
names not matching the declared schema) is split out into its own PR:
googleapis#3789. The two touch nearby lines in `looker.yaml`, so whichever merges
second may need a trivial rebase.

## PR Checklist

- [x] Make sure to open an issue as a bug/issue before writing your
code!
- [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)
- [ ] Make sure to add `!` if this involves a breaking change

`go test ./internal/prebuiltconfigs/...` passes.

Fixes googleapis#3786 🦕

Co-authored-by: Dr. Strangelove <drstrangelove@google.com>
Co-authored-by: Yuan Teoh <45984206+Yuan325@users.noreply.github.com> 78eb0b8

…n query description (googleapis#3788)

## Description

The `filters` guidance in the prebuilt Looker `query` tool description
reads:

```
- filters: A map of filter expressions, e.g., `{"view.field": "value", "view.date": "7 days"}`.
  - Do not quote field names.
```

The rule sits directly beneath an example whose field name **is**
quoted, because JSON map keys have to be. The two read as contradicting
each other.

The instruction isn't wrong as Looker guidance, it's under-scoped: it
means "don't wrap filter *values* in extra quote characters," but
nothing in the text says that. And the mandatory `view_name.field_name`
key format is never stated at all, it's only implied by the shape of a
placeholder. The block contains no *must*, *required*, or *always*, so a
model that omits the view prefix hasn't violated any stated rule.

This matters more than it looks: `filters` is a free-form map, and
Gemini's function-calling schema subset has no construct for it, so the
parameter reaches the model as a bare `OBJECT` with no declared
properties. This prose is the only guidance on key format, so an
ambiguity here has nothing to fall back on.

**Fix:** rewrite the block to state the fully-scoped key requirement
explicitly and to scope the quoting rule to values, matching the
authoritative parameter description already in
`lookercommon.GetQueryParameters`:

```
- filters: A map of filter expressions, e.g., `{"view_name.field_name": "value", "view_name.date": "7 days"}`.
  - Each key must be a fully-scoped `view_name.field_name`, copied verbatim from
    `get_dimensions`, `get_measures`, `get_filters`, or `get_parameters`. The view
    prefix and the dot are required.
  - Each value is a Looker filter expression. Pass values bare: do not wrap them in
    extra quote characters. For LookML `parameter` fields, use the raw allowed_value
    (e.g. `first_touch`, not `"first_touch"`).
  - Use `not null` instead of `-NULL`.
  - If a value contains a comma, enclose it in single quotes (e.g., `'New York, NY'`).
  - To retrieve valid filter values for a suggestible field, use the 'get_field_value_suggestions' tool.
```

Two files: the prebuilt config and the docs page that quotes it
verbatim. Description-only change, no Go source, schema, or runtime
behaviour is touched.

> **Note:** the second, unrelated half of googleapis#3786 (description parameter
names not matching the declared schema) is split out into its own PR:
googleapis#3789. The two touch nearby lines in `looker.yaml`, so whichever merges
second may need a trivial rebase.

## PR Checklist

- [x] Make sure to open an issue as a bug/issue before writing your
code!
- [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)
- [ ] Make sure to add `!` if this involves a breaking change

`go test ./internal/prebuiltconfigs/...` passes.

Fixes googleapis#3786 🦕

Co-authored-by: Dr. Strangelove <drstrangelove@google.com>
Co-authored-by: Yuan Teoh <45984206+Yuan325@users.noreply.github.com> 78eb0b8

🤖 I have created a release *beep* *boop*
---


##
[1.9.0](v1.8.0...v1.9.0)
(2026-08-14)


### Features

* **groups:** Add ttlMs and cacheScope customization to config
([#3805](#3805))
([a5d4947](a5d4947))
* **migrate:** Convert toolset to group kind during migration
([#3704](#3704))
([0adeaa5](0adeaa5))
* **server/mcp:** Introduce generic client extension registry
([#3723](#3723))
([016245c](016245c))
* **skill:** Add review-prs skill for mcp-toolbox
([#3743](#3743))
([5b7bacc](5b7bacc))
* **source/bigquery:** Add apiEndpoint field to override BigQuery API
host ([#3437](#3437))
([4da1600](4da1600))
* **source/databaseinsights:** Add databaseinsights source
([#3461](#3461))
([3b9615d](3b9615d))
* **sources/spanner:** Rename execute_sql_dql to execute_sql_readonly
([#3776](#3776))
([cf5a0c8](cf5a0c8))
* **tools/bigtable:** Add admin lifecycle and listing tools
([#3596](#3596))
([801d589](801d589))
* **tools/bigtable:** Bigtable-list-schemas MCP tool
([#3683](#3683))
([9228c61](9228c61))
* **tools/databaseinsights:** Add Advanced Query Insights tools for
AlloyDB ([#3722](#3722))
([74d18ae](74d18ae))
* **tools/looker:** Add additional tools to allow dashboards to be
modified, and their layouts altered.
([#3597](#3597))
([b2b80fb](b2b80fb))
* **tools:** Add cloud-sql-connect-gce for pg, mysql, mssql
([#3740](#3740))
([ca58fa4](ca58fa4))


### Bug Fixes

* **auth/mcp:** Derive PRM URL from Toolbox URL
([#3765](#3765))
([aa30842](aa30842))
* **config:** Ignore environment variables in YAML comments
([#3807](#3807))
([79aa732](79aa732)),
refs [#3793](#3793)
* **mcp:** Return Tool execution error for invalid input param
([#3799](#3799))
([8120197](8120197))
* **prebuilt/cloud-storage:** Declare tool collections as groups
([#3764](#3764))
([7d468be](7d468be))
* **server/mcp:** Disallow client overriding URL bound parameters
([#3798](#3798))
([f15a9c7](f15a9c7))
* **server:** Avoid a nil-flusher panic in the SSE handler
([#3520](#3520))
([947f42f](947f42f))
* **tools/bigquery:** Keep the provider error classification in
bigquery-execute-sql
([#3738](#3738))
([42570b8](42570b8))
* **tools/looker:** Scope the filters quoting rule to values in query
description
([#3788](#3788))
([78eb0b8](78eb0b8))
* **util:** Convert exponent-form JSON numbers in ConvertNumbers
([#3730](#3730))
([e9713ee](e9713ee))

---
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*
---

##
[1.9.0](v1.8.0...v1.9.0)
(2026-08-14)

### Features

* **groups:** Add ttlMs and cacheScope customization to config
([#3805](#3805))
([a5d4947](a5d4947))
* **migrate:** Convert toolset to group kind during migration
([#3704](#3704))
([0adeaa5](0adeaa5))
* **server/mcp:** Introduce generic client extension registry
([#3723](#3723))
([016245c](016245c))
* **skill:** Add review-prs skill for mcp-toolbox
([#3743](#3743))
([5b7bacc](5b7bacc))
* **source/bigquery:** Add apiEndpoint field to override BigQuery API
host ([#3437](#3437))
([4da1600](4da1600))
* **source/databaseinsights:** Add databaseinsights source
([#3461](#3461))
([3b9615d](3b9615d))
* **sources/spanner:** Rename execute_sql_dql to execute_sql_readonly
([#3776](#3776))
([cf5a0c8](cf5a0c8))
* **tools/bigtable:** Add admin lifecycle and listing tools
([#3596](#3596))
([801d589](801d589))
* **tools/bigtable:** Bigtable-list-schemas MCP tool
([#3683](#3683))
([9228c61](9228c61))
* **tools/databaseinsights:** Add Advanced Query Insights tools for
AlloyDB ([#3722](#3722))
([74d18ae](74d18ae))
* **tools/looker:** Add additional tools to allow dashboards to be
modified, and their layouts altered.
([#3597](#3597))
([b2b80fb](b2b80fb))
* **tools:** Add cloud-sql-connect-gce for pg, mysql, mssql
([#3740](#3740))
([ca58fa4](ca58fa4))

### Bug Fixes

* **auth/mcp:** Derive PRM URL from Toolbox URL
([#3765](#3765))
([aa30842](aa30842))
* **config:** Ignore environment variables in YAML comments
([#3807](#3807))
([79aa732](79aa732)),
refs [#3793](#3793)
* **mcp:** Return Tool execution error for invalid input param
([#3799](#3799))
([8120197](8120197))
* **prebuilt/cloud-storage:** Declare tool collections as groups
([#3764](#3764))
([7d468be](7d468be))
* **server/mcp:** Disallow client overriding URL bound parameters
([#3798](#3798))
([f15a9c7](f15a9c7))
* **server:** Avoid a nil-flusher panic in the SSE handler
([#3520](#3520))
([947f42f](947f42f))
* **tools/bigquery:** Keep the provider error classification in
bigquery-execute-sql
([#3738](#3738))
([42570b8](42570b8))
* **tools/looker:** Scope the filters quoting rule to values in query
description
([#3788](#3788))
([78eb0b8](78eb0b8))
* **util:** Convert exponent-form JSON numbers in ConvertNumbers
([#3730](#3730))
([e9713ee](e9713ee))

---
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> 5de8f13

🤖 I have created a release *beep* *boop*
---

##
[1.9.0](googleapis/mcp-toolbox@v1.8.0...v1.9.0)
(2026-08-14)

### Features

* **groups:** Add ttlMs and cacheScope customization to config
([googleapis#3805](googleapis#3805))
([a5d4947](googleapis@a5d4947))
* **migrate:** Convert toolset to group kind during migration
([googleapis#3704](googleapis#3704))
([0adeaa5](googleapis@0adeaa5))
* **server/mcp:** Introduce generic client extension registry
([googleapis#3723](googleapis#3723))
([016245c](googleapis@016245c))
* **skill:** Add review-prs skill for mcp-toolbox
([googleapis#3743](googleapis#3743))
([5b7bacc](googleapis@5b7bacc))
* **source/bigquery:** Add apiEndpoint field to override BigQuery API
host ([googleapis#3437](googleapis#3437))
([4da1600](googleapis@4da1600))
* **source/databaseinsights:** Add databaseinsights source
([googleapis#3461](googleapis#3461))
([3b9615d](googleapis@3b9615d))
* **sources/spanner:** Rename execute_sql_dql to execute_sql_readonly
([googleapis#3776](googleapis#3776))
([cf5a0c8](googleapis@cf5a0c8))
* **tools/bigtable:** Add admin lifecycle and listing tools
([googleapis#3596](googleapis#3596))
([801d589](googleapis@801d589))
* **tools/bigtable:** Bigtable-list-schemas MCP tool
([googleapis#3683](googleapis#3683))
([9228c61](googleapis@9228c61))
* **tools/databaseinsights:** Add Advanced Query Insights tools for
AlloyDB ([googleapis#3722](googleapis#3722))
([74d18ae](googleapis@74d18ae))
* **tools/looker:** Add additional tools to allow dashboards to be
modified, and their layouts altered.
([googleapis#3597](googleapis#3597))
([b2b80fb](googleapis@b2b80fb))
* **tools:** Add cloud-sql-connect-gce for pg, mysql, mssql
([googleapis#3740](googleapis#3740))
([ca58fa4](googleapis@ca58fa4))

### Bug Fixes

* **auth/mcp:** Derive PRM URL from Toolbox URL
([googleapis#3765](googleapis#3765))
([aa30842](googleapis@aa30842))
* **config:** Ignore environment variables in YAML comments
([googleapis#3807](googleapis#3807))
([79aa732](googleapis@79aa732)),
refs [googleapis#3793](googleapis#3793)
* **mcp:** Return Tool execution error for invalid input param
([googleapis#3799](googleapis#3799))
([8120197](googleapis@8120197))
* **prebuilt/cloud-storage:** Declare tool collections as groups
([googleapis#3764](googleapis#3764))
([7d468be](googleapis@7d468be))
* **server/mcp:** Disallow client overriding URL bound parameters
([googleapis#3798](googleapis#3798))
([f15a9c7](googleapis@f15a9c7))
* **server:** Avoid a nil-flusher panic in the SSE handler
([googleapis#3520](googleapis#3520))
([947f42f](googleapis@947f42f))
* **tools/bigquery:** Keep the provider error classification in
bigquery-execute-sql
([googleapis#3738](googleapis#3738))
([42570b8](googleapis@42570b8))
* **tools/looker:** Scope the filters quoting rule to values in query
description
([googleapis#3788](googleapis#3788))
([78eb0b8](googleapis@78eb0b8))
* **util:** Convert exponent-form JSON numbers in ConvertNumbers
([googleapis#3730](googleapis#3730))
([e9713ee](googleapis@e9713ee))

---
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> 5de8f13

🤖 I have created a release *beep* *boop*
---

##
[1.9.0](googleapis/mcp-toolbox@v1.8.0...v1.9.0)
(2026-08-14)

### Features

* **groups:** Add ttlMs and cacheScope customization to config
([googleapis#3805](googleapis#3805))
([a5d4947](googleapis@a5d4947))
* **migrate:** Convert toolset to group kind during migration
([googleapis#3704](googleapis#3704))
([0adeaa5](googleapis@0adeaa5))
* **server/mcp:** Introduce generic client extension registry
([googleapis#3723](googleapis#3723))
([016245c](googleapis@016245c))
* **skill:** Add review-prs skill for mcp-toolbox
([googleapis#3743](googleapis#3743))
([5b7bacc](googleapis@5b7bacc))
* **source/bigquery:** Add apiEndpoint field to override BigQuery API
host ([googleapis#3437](googleapis#3437))
([4da1600](googleapis@4da1600))
* **source/databaseinsights:** Add databaseinsights source
([googleapis#3461](googleapis#3461))
([3b9615d](googleapis@3b9615d))
* **sources/spanner:** Rename execute_sql_dql to execute_sql_readonly
([googleapis#3776](googleapis#3776))
([cf5a0c8](googleapis@cf5a0c8))
* **tools/bigtable:** Add admin lifecycle and listing tools
([googleapis#3596](googleapis#3596))
([801d589](googleapis@801d589))
* **tools/bigtable:** Bigtable-list-schemas MCP tool
([googleapis#3683](googleapis#3683))
([9228c61](googleapis@9228c61))
* **tools/databaseinsights:** Add Advanced Query Insights tools for
AlloyDB ([googleapis#3722](googleapis#3722))
([74d18ae](googleapis@74d18ae))
* **tools/looker:** Add additional tools to allow dashboards to be
modified, and their layouts altered.
([googleapis#3597](googleapis#3597))
([b2b80fb](googleapis@b2b80fb))
* **tools:** Add cloud-sql-connect-gce for pg, mysql, mssql
([googleapis#3740](googleapis#3740))
([ca58fa4](googleapis@ca58fa4))

### Bug Fixes

* **auth/mcp:** Derive PRM URL from Toolbox URL
([googleapis#3765](googleapis#3765))
([aa30842](googleapis@aa30842))
* **config:** Ignore environment variables in YAML comments
([googleapis#3807](googleapis#3807))
([79aa732](googleapis@79aa732)),
refs [googleapis#3793](googleapis#3793)
* **mcp:** Return Tool execution error for invalid input param
([googleapis#3799](googleapis#3799))
([8120197](googleapis@8120197))
* **prebuilt/cloud-storage:** Declare tool collections as groups
([googleapis#3764](googleapis#3764))
([7d468be](googleapis@7d468be))
* **server/mcp:** Disallow client overriding URL bound parameters
([googleapis#3798](googleapis#3798))
([f15a9c7](googleapis@f15a9c7))
* **server:** Avoid a nil-flusher panic in the SSE handler
([googleapis#3520](googleapis#3520))
([947f42f](googleapis@947f42f))
* **tools/bigquery:** Keep the provider error classification in
bigquery-execute-sql
([googleapis#3738](googleapis#3738))
([42570b8](googleapis@42570b8))
* **tools/looker:** Scope the filters quoting rule to values in query
description
([googleapis#3788](googleapis#3788))
([78eb0b8](googleapis@78eb0b8))
* **util:** Convert exponent-form JSON numbers in ConvertNumbers
([googleapis#3730](googleapis#3730))
([e9713ee](googleapis@e9713ee))

---
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> 5de8f13

🤖 I have created a release *beep* *boop*
---

##
[1.9.0](googleapis/mcp-toolbox@v1.8.0...v1.9.0)
(2026-08-14)

### Features

* **groups:** Add ttlMs and cacheScope customization to config
([googleapis#3805](googleapis#3805))
([a5d4947](googleapis@a5d4947))
* **migrate:** Convert toolset to group kind during migration
([googleapis#3704](googleapis#3704))
([0adeaa5](googleapis@0adeaa5))
* **server/mcp:** Introduce generic client extension registry
([googleapis#3723](googleapis#3723))
([016245c](googleapis@016245c))
* **skill:** Add review-prs skill for mcp-toolbox
([googleapis#3743](googleapis#3743))
([5b7bacc](googleapis@5b7bacc))
* **source/bigquery:** Add apiEndpoint field to override BigQuery API
host ([googleapis#3437](googleapis#3437))
([4da1600](googleapis@4da1600))
* **source/databaseinsights:** Add databaseinsights source
([googleapis#3461](googleapis#3461))
([3b9615d](googleapis@3b9615d))
* **sources/spanner:** Rename execute_sql_dql to execute_sql_readonly
([googleapis#3776](googleapis#3776))
([cf5a0c8](googleapis@cf5a0c8))
* **tools/bigtable:** Add admin lifecycle and listing tools
([googleapis#3596](googleapis#3596))
([801d589](googleapis@801d589))
* **tools/bigtable:** Bigtable-list-schemas MCP tool
([googleapis#3683](googleapis#3683))
([9228c61](googleapis@9228c61))
* **tools/databaseinsights:** Add Advanced Query Insights tools for
AlloyDB ([googleapis#3722](googleapis#3722))
([74d18ae](googleapis@74d18ae))
* **tools/looker:** Add additional tools to allow dashboards to be
modified, and their layouts altered.
([googleapis#3597](googleapis#3597))
([b2b80fb](googleapis@b2b80fb))
* **tools:** Add cloud-sql-connect-gce for pg, mysql, mssql
([googleapis#3740](googleapis#3740))
([ca58fa4](googleapis@ca58fa4))

### Bug Fixes

* **auth/mcp:** Derive PRM URL from Toolbox URL
([googleapis#3765](googleapis#3765))
([aa30842](googleapis@aa30842))
* **config:** Ignore environment variables in YAML comments
([googleapis#3807](googleapis#3807))
([79aa732](googleapis@79aa732)),
refs [googleapis#3793](googleapis#3793)
* **mcp:** Return Tool execution error for invalid input param
([googleapis#3799](googleapis#3799))
([8120197](googleapis@8120197))
* **prebuilt/cloud-storage:** Declare tool collections as groups
([googleapis#3764](googleapis#3764))
([7d468be](googleapis@7d468be))
* **server/mcp:** Disallow client overriding URL bound parameters
([googleapis#3798](googleapis#3798))
([f15a9c7](googleapis@f15a9c7))
* **server:** Avoid a nil-flusher panic in the SSE handler
([googleapis#3520](googleapis#3520))
([947f42f](googleapis@947f42f))
* **tools/bigquery:** Keep the provider error classification in
bigquery-execute-sql
([googleapis#3738](googleapis#3738))
([42570b8](googleapis@42570b8))
* **tools/looker:** Scope the filters quoting rule to values in query
description
([googleapis#3788](googleapis#3788))
([78eb0b8](googleapis@78eb0b8))
* **util:** Convert exponent-form JSON numbers in ConvertNumbers
([googleapis#3730](googleapis#3730))
([e9713ee](googleapis@e9713ee))

---
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> 5de8f13