feat: add support for optional parameters - #617

Fixes googleapis#617 🦕

Add a `default` field to parameters, that enables users to specify a
default value.

e.g.

```
  parameters:
    - name: name
      type: string
      default: "some-default-value"
      description: The name of the hotel.
```
if this parameter is invoked without specifying `name`, the parameter
would default to "some-default-value"

For parameter manifest, there will be an additional `Required` field.
The default `Required` field is true. If a `default` value is presented,
`Required: false`. Array parameter's item's `Required` field will
inherit the array's `Required` field.

Fixes #475 4827771

Add a `default` field to parameters, that enables users to specify a
default value.

e.g.

```
  parameters:
    - name: name
      type: string
      default: "some-default-value"
      description: The name of the hotel.
```
if this parameter is invoked without specifying `name`, the parameter
would default to "some-default-value"

For parameter manifest, there will be an additional `Required` field.
The default `Required` field is true. If a `default` value is presented,
`Required: false`. Array parameter's item's `Required` field will
inherit the array's `Required` field.

Fixes googleapis#475 4827771

This PR adds a tools file equivalent to all the tools in the Cymbal Air
app.

> [!NOTE]
> This tools file makes use of the new optional params feature
(`default: ""`) from
[#617](googleapis/mcp-toolbox#617).

Add a `default` field to parameters, that enables users to specify a
default value.

e.g.

```
  parameters:
    - name: name
      type: string
      default: "some-default-value"
      description: The name of the hotel.
```
if this parameter is invoked without specifying `name`, the parameter
would default to "some-default-value"


For parameter manifest, there will be an additional `Required` field.
The default `Required` field is true. If a `default` value is presented,
`Required: false`. Array parameter's item's `Required` field will
inherit the array's `Required` field.

Fixes googleapis#475

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


##
[0.8.0](v0.7.0...v0.8.0)
(2025-07-02)


### ⚠ BREAKING CHANGES

* **postgres,mssql,cloudsqlmssql:** encode source connection url for
sources ([#727](#727))

### Features

* Add support for multiple YAML configuration files
([#760](#760))
([40679d7](40679d7))
* Add support for optional parameters
([#617](#617))
([4827771](4827771)),
closes [#475](#475)
* **mcp:** Support MCP version 2025-03-26
([#755](#755))
([474df57](474df57))
* **sources/http:** Support disable SSL verification for HTTP Source
([#674](#674))
([4055b0c](4055b0c))
* **tools/bigquery:** Add templateParameters field for bigquery
([#699](#699))
([f5f771b](f5f771b))
* **tools/bigtable:** Add templateParameters field for bigtable
([#692](#692))
([1c06771](1c06771))
* **tools/couchbase:** Add templateParameters field for couchbase
([#723](#723))
([9197186](9197186))
* **tools/http:** Add support for HTTP Tool pathParams
([#726](#726))
([fd300dc](fd300dc))
* **tools/redis:** Add Redis Source and Tool
([#519](#519))
([f0aef29](f0aef29))
* **tools/spanner:** Add templateParameters field for spanner
([#691](#691))
([075dfa4](075dfa4))
* **tools/sqlitesql:** Add templateParameters field for sqlitesql
([#687](#687))
([75e254c](75e254c))
* **tools/valkey:** Add Valkey Source and Tool
([#532](#532))
([054ec19](054ec19))


### Bug Fixes

* **bigquery,mssql:** Fix panic on tools with array param
([#722](#722))
([7a6644c](7a6644c))
* **postgres,mssql,cloudsqlmssql:** Encode source connection url for
sources ([#727](#727))
([67964d9](67964d9)),
closes [#717](#717)
* Set default value to field's type during unmarshalling
([#774](#774))
([fafed24](fafed24)),
closes [#771](#771)
* **server/mcp:** Do not listen from port for stdio
([#719](#719))
([d51dbc7](d51dbc7)),
closes [#711](#711)
* **tools/mysqlexecutesql:** Handle nil panic and connection leak in
Invoke ([#757](#757))
([7badba4](7badba4))
* **tools/mysqlsql:** Handle nil panic and connection leak in invoke
([#758](#758))
([cbb4a33](cbb4a33))

---
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 <45984206+Yuan325@users.noreply.github.com>

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

##
[0.8.0](v0.7.0...v0.8.0)
(2025-07-02)

### ⚠ BREAKING CHANGES

* **postgres,mssql,cloudsqlmssql:** encode source connection url for
sources ([#727](#727))

### Features

* Add support for multiple YAML configuration files
([#760](#760))
([40679d7](40679d7))
* Add support for optional parameters
([#617](#617))
([4827771](4827771)),
closes [#475](#475)
* **mcp:** Support MCP version 2025-03-26
([#755](#755))
([474df57](474df57))
* **sources/http:** Support disable SSL verification for HTTP Source
([#674](#674))
([4055b0c](4055b0c))
* **tools/bigquery:** Add templateParameters field for bigquery
([#699](#699))
([f5f771b](f5f771b))
* **tools/bigtable:** Add templateParameters field for bigtable
([#692](#692))
([1c06771](1c06771))
* **tools/couchbase:** Add templateParameters field for couchbase
([#723](#723))
([9197186](9197186))
* **tools/http:** Add support for HTTP Tool pathParams
([#726](#726))
([fd300dc](fd300dc))
* **tools/redis:** Add Redis Source and Tool
([#519](#519))
([f0aef29](f0aef29))
* **tools/spanner:** Add templateParameters field for spanner
([#691](#691))
([075dfa4](075dfa4))
* **tools/sqlitesql:** Add templateParameters field for sqlitesql
([#687](#687))
([75e254c](75e254c))
* **tools/valkey:** Add Valkey Source and Tool
([#532](#532))
([054ec19](054ec19))

### Bug Fixes

* **bigquery,mssql:** Fix panic on tools with array param
([#722](#722))
([7a6644c](7a6644c))
* **postgres,mssql,cloudsqlmssql:** Encode source connection url for
sources ([#727](#727))
([67964d9](67964d9)),
closes [#717](#717)
* Set default value to field's type during unmarshalling
([#774](#774))
([fafed24](fafed24)),
closes [#771](#771)
* **server/mcp:** Do not listen from port for stdio
([#719](#719))
([d51dbc7](d51dbc7)),
closes [#711](#711)
* **tools/mysqlexecutesql:** Handle nil panic and connection leak in
Invoke ([#757](#757))
([7badba4](7badba4))
* **tools/mysqlsql:** Handle nil panic and connection leak in invoke
([#758](#758))
([cbb4a33](cbb4a33))

---
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 <45984206+Yuan325@users.noreply.github.com> f13e963

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

##
[0.8.0](googleapis/mcp-toolbox@v0.7.0...v0.8.0)
(2025-07-02)

### ⚠ BREAKING CHANGES

* **postgres,mssql,cloudsqlmssql:** encode source connection url for
sources ([googleapis#727](googleapis#727))

### Features

* Add support for multiple YAML configuration files
([googleapis#760](googleapis#760))
([40679d7](googleapis@40679d7))
* Add support for optional parameters
([googleapis#617](googleapis#617))
([4827771](googleapis@4827771)),
closes [googleapis#475](googleapis#475)
* **mcp:** Support MCP version 2025-03-26
([googleapis#755](googleapis#755))
([474df57](googleapis@474df57))
* **sources/http:** Support disable SSL verification for HTTP Source
([googleapis#674](googleapis#674))
([4055b0c](googleapis@4055b0c))
* **tools/bigquery:** Add templateParameters field for bigquery
([googleapis#699](googleapis#699))
([f5f771b](googleapis@f5f771b))
* **tools/bigtable:** Add templateParameters field for bigtable
([googleapis#692](googleapis#692))
([1c06771](googleapis@1c06771))
* **tools/couchbase:** Add templateParameters field for couchbase
([googleapis#723](googleapis#723))
([9197186](googleapis@9197186))
* **tools/http:** Add support for HTTP Tool pathParams
([googleapis#726](googleapis#726))
([fd300dc](googleapis@fd300dc))
* **tools/redis:** Add Redis Source and Tool
([googleapis#519](googleapis#519))
([f0aef29](googleapis@f0aef29))
* **tools/spanner:** Add templateParameters field for spanner
([googleapis#691](googleapis#691))
([075dfa4](googleapis@075dfa4))
* **tools/sqlitesql:** Add templateParameters field for sqlitesql
([googleapis#687](googleapis#687))
([75e254c](googleapis@75e254c))
* **tools/valkey:** Add Valkey Source and Tool
([googleapis#532](googleapis#532))
([054ec19](googleapis@054ec19))

### Bug Fixes

* **bigquery,mssql:** Fix panic on tools with array param
([googleapis#722](googleapis#722))
([7a6644c](googleapis@7a6644c))
* **postgres,mssql,cloudsqlmssql:** Encode source connection url for
sources ([googleapis#727](googleapis#727))
([67964d9](googleapis@67964d9)),
closes [googleapis#717](googleapis#717)
* Set default value to field's type during unmarshalling
([googleapis#774](googleapis#774))
([fafed24](googleapis@fafed24)),
closes [googleapis#771](googleapis#771)
* **server/mcp:** Do not listen from port for stdio
([googleapis#719](googleapis#719))
([d51dbc7](googleapis@d51dbc7)),
closes [googleapis#711](googleapis#711)
* **tools/mysqlexecutesql:** Handle nil panic and connection leak in
Invoke ([googleapis#757](googleapis#757))
([7badba4](googleapis@7badba4))
* **tools/mysqlsql:** Handle nil panic and connection leak in invoke
([googleapis#758](googleapis#758))
([cbb4a33](googleapis@cbb4a33))

---
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 <45984206+Yuan325@users.noreply.github.com> f13e963

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


##
[0.8.0](v0.7.0...v0.8.0)
(2025-07-02)


### ⚠ BREAKING CHANGES

* **postgres,mssql,cloudsqlmssql:** encode source connection url for
sources ([#727](#727))

### Features

* Add support for multiple YAML configuration files
([#760](#760))
([40679d7](40679d7))
* Add support for optional parameters
([#617](#617))
([4827771](4827771)),
closes [#475](#475)
* **mcp:** Support MCP version 2025-03-26
([#755](#755))
([474df57](474df57))
* **sources/http:** Support disable SSL verification for HTTP Source
([#674](#674))
([4055b0c](4055b0c))
* **tools/bigquery:** Add templateParameters field for bigquery
([#699](#699))
([f5f771b](f5f771b))
* **tools/bigtable:** Add templateParameters field for bigtable
([#692](#692))
([1c06771](1c06771))
* **tools/couchbase:** Add templateParameters field for couchbase
([#723](#723))
([9197186](9197186))
* **tools/http:** Add support for HTTP Tool pathParams
([#726](#726))
([fd300dc](fd300dc))
* **tools/redis:** Add Redis Source and Tool
([#519](#519))
([f0aef29](f0aef29))
* **tools/spanner:** Add templateParameters field for spanner
([#691](#691))
([075dfa4](075dfa4))
* **tools/sqlitesql:** Add templateParameters field for sqlitesql
([#687](#687))
([75e254c](75e254c))
* **tools/valkey:** Add Valkey Source and Tool
([#532](#532))
([054ec19](054ec19))


### Bug Fixes

* **bigquery,mssql:** Fix panic on tools with array param
([#722](#722))
([7a6644c](7a6644c))
* **postgres,mssql,cloudsqlmssql:** Encode source connection url for
sources ([#727](#727))
([67964d9](67964d9)),
closes [#717](#717)
* Set default value to field's type during unmarshalling
([#774](#774))
([fafed24](fafed24)),
closes [#771](#771)
* **server/mcp:** Do not listen from port for stdio
([#719](#719))
([d51dbc7](d51dbc7)),
closes [#711](#711)
* **tools/mysqlexecutesql:** Handle nil panic and connection leak in
Invoke ([#757](#757))
([7badba4](7badba4))
* **tools/mysqlsql:** Handle nil panic and connection leak in invoke
([#758](#758))
([cbb4a33](cbb4a33))

---
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 <45984206+Yuan325@users.noreply.github.com>

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


##
[0.8.0](googleapis/mcp-toolbox@v0.7.0...v0.8.0)
(2025-07-02)


### ⚠ BREAKING CHANGES

* **postgres,mssql,cloudsqlmssql:** encode source connection url for
sources ([#727](googleapis/mcp-toolbox#727))

### Features

* Add support for multiple YAML configuration files
([#760](googleapis/mcp-toolbox#760))
([40679d7](googleapis/mcp-toolbox@40679d7))
* Add support for optional parameters
([#617](googleapis/mcp-toolbox#617))
([4827771](googleapis/mcp-toolbox@4827771)),
closes [#475](googleapis/mcp-toolbox#475)
* **mcp:** Support MCP version 2025-03-26
([#755](googleapis/mcp-toolbox#755))
([474df57](googleapis/mcp-toolbox@474df57))
* **sources/http:** Support disable SSL verification for HTTP Source
([#674](googleapis/mcp-toolbox#674))
([4055b0c](googleapis/mcp-toolbox@4055b0c))
* **tools/bigquery:** Add templateParameters field for bigquery
([#699](googleapis/mcp-toolbox#699))
([f5f771b](googleapis/mcp-toolbox@f5f771b))
* **tools/bigtable:** Add templateParameters field for bigtable
([#692](googleapis/mcp-toolbox#692))
([1c06771](googleapis/mcp-toolbox@1c06771))
* **tools/couchbase:** Add templateParameters field for couchbase
([#723](googleapis/mcp-toolbox#723))
([9197186](googleapis/mcp-toolbox@9197186))
* **tools/http:** Add support for HTTP Tool pathParams
([#726](googleapis/mcp-toolbox#726))
([fd300dc](googleapis/mcp-toolbox@fd300dc))
* **tools/redis:** Add Redis Source and Tool
([#519](googleapis/mcp-toolbox#519))
([f0aef29](googleapis/mcp-toolbox@f0aef29))
* **tools/spanner:** Add templateParameters field for spanner
([#691](googleapis/mcp-toolbox#691))
([075dfa4](googleapis/mcp-toolbox@075dfa4))
* **tools/sqlitesql:** Add templateParameters field for sqlitesql
([#687](googleapis/mcp-toolbox#687))
([75e254c](googleapis/mcp-toolbox@75e254c))
* **tools/valkey:** Add Valkey Source and Tool
([#532](googleapis/mcp-toolbox#532))
([054ec19](googleapis/mcp-toolbox@054ec19))


### Bug Fixes

* **bigquery,mssql:** Fix panic on tools with array param
([#722](googleapis/mcp-toolbox#722))
([7a6644c](googleapis/mcp-toolbox@7a6644c))
* **postgres,mssql,cloudsqlmssql:** Encode source connection url for
sources ([#727](googleapis/mcp-toolbox#727))
([67964d9](googleapis/mcp-toolbox@67964d9)),
closes [#717](googleapis/mcp-toolbox#717)
* Set default value to field's type during unmarshalling
([#774](googleapis/mcp-toolbox#774))
([fafed24](googleapis/mcp-toolbox@fafed24)),
closes [#771](googleapis/mcp-toolbox#771)
* **server/mcp:** Do not listen from port for stdio
([#719](googleapis/mcp-toolbox#719))
([d51dbc7](googleapis/mcp-toolbox@d51dbc7)),
closes [#711](googleapis/mcp-toolbox#711)
* **tools/mysqlexecutesql:** Handle nil panic and connection leak in
Invoke ([#757](googleapis/mcp-toolbox#757))
([7badba4](googleapis/mcp-toolbox@7badba4))
* **tools/mysqlsql:** Handle nil panic and connection leak in invoke
([#758](googleapis/mcp-toolbox#758))
([cbb4a33](googleapis/mcp-toolbox@cbb4a33))

---
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 <45984206+Yuan325@users.noreply.github.com>