There are some unused block variables. This change removes block parameters
that consist solely of unused block parameters.
Where `Hash#values` suffices instead of ignoring unused variables,
replace such code with `Hash#values`.
Configure Dependabot to automatically detect updates to the actions used in
GitHub Actions (e.g., `actions/checkout`) and create pull requests for them.
Based on experience, checking for updates on a weekly interval should work well.
This commit implements optional JSON Schema validation for tool outputs according to the MCP specification:
- Add MCP::Tool::OutputSchema class mirroring InputSchema functionality
- Support output_schema in class definitions, Tool.define, and OutputSchema objects
- Include validate_result method for runtime validation
- Update MCP::Client::Tool to track output schemas
- Add comprehensive test coverage with 249 passing tests
- Update README with dedicated Tool Output Schemas section
- Follow MCP spec requirements for server/client validation
Since the optional `title` becomes `title: null` when not provided, the following error occurs.
This occurs with Claude Code 1.0.100.
```console
[DEBUG] MCP server "example": Connection failed after 1591ms: [
{
"code": "invalid_type",
"expected": "string",
"received": "null",
"path": [
"serverInfo",
"title"
],
"message": "Expected string, received null"
}
]
```
By adding `compact`, the `title` key will be removed if the optional `title` keyword argument is not specified.
According to the specification, `destructive_hint`, `idempotent_hint`, `open_world_hint`,
and `read_only_hint` of `ToolAnnotations` are optional with default values:
https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations
This PR sets their default values in accordance with the specification.
Additionally, for readability, the hints have been reordered to follow the specification.
The tests related to `MCP::Tool::Annotations` will be extracted from the `MCP::ToolTest` test class
into a dedicated `MCP::Tool::AnnotationsTest` unit test class as a testing pair.
This improves test clarity, file level test independence, and file level execution speed.
It also ensures consistent placement as a testing pair under `MCP::Tool::*`:
```console
$ ls lib/mcp/tool/
annotations.rb input_schema.rb response.rb
$ ls test/mcp/tool/
annotations_test.rb input_schema_test.rb response_test.rb
```
Follow-up to #109.
The introduction of `title` in #109 is still a draft and is not supported in the latest specification, `Version 2025-06-18 (latest)`.
In this PR, the README.md will be updated to mention this point and restore the references to the removed `annotations.title`.
This aims to inform users that, as of `Version 2025-06-18 (latest)`, the use of `annotations.title` is considered stable.
Additionally, separate validation for these parameters could be added.
Please refer to the following comment regarding `annotations.title` and `title`:
https://github.com/modelcontextprotocol/modelcontextprotocol/pull/663#issuecomment-2963519737
Both the combination of positional argument and naming does not feel
like Ruby.
This change makes `is_error` argument a keyword argument called `error`.
Thanks to this, the usage is more self-explanatory:
```ruby
response = Response.new([], error: true)
```
In Ruby, it is generally not customary to add parentheses to methods without arguments.
This PR removes such redundant parentheses from the documentation.
