Even though the 'tools/call' request to 'notification_tool' is successful and an 'MCP::Tool::Response' is returned, the logger still prints 'Error:'.
```
% ruby examples/streamable_http_client.rb
=== MCP SSE Test Client ===
[CLIENT] INFO 15:41:04.696 - Initializing session...
[CLIENT] INFO 15:41:04.698 - Session initialized: SESSION_ID
[CLIENT] INFO 15:41:04.698 - Server info: {"name" => "sse_test_server", "version" => "0.1.0"}
[CLIENT] INFO 15:41:04.698 - Connecting to SSE stream...
[CLIENT] INFO 15:41:04.698 - SSE stream connected successfully
=== Available Actions ===
1. Send custom notification
2. Test echo
3. List tools
0. Exit
Choose an action: 1
Enter notification message: notification test
Enter delay in seconds (0 for immediate):
[CLIENT] INFO 15:41:11.248 - SSE data: {"jsonrpc":"2.0","id":"0f657eeb-3e05-47bb-b7b4-898e2cb503af","result":{"content":[{"type":"text","text":"Notification: notification test (timestamp: 2025-06-21T15:41:11+09:00)"}],"isError":false}}
[CLIENT] ERROR 15:41:11.249 - Error:
=== Available Actions ===
1. Send custom notification
2. Test echo
3. List tools
0. Exit
```
It is probably trying to output an MCP::Tool::Response, but these appear in the SSE stream. Therefore, the response it is handling this time should either be accepted or an error.
I modified it so that it could handle them.
Since the example files are not executable binaries, this PR removes the shebangs.
This ensures that all examples are consistently executed via `ruby` command.
It also removes the executable permission from `examples/stdio_server.rb` using `chmod 444`,
bringing it in line with the other example files.
This PR renamed the files related to the SSE example and fixed the README.md.
Because missing files were specified in README.md.
And also, I removed the word 'test' from the file names related to the SSE example.
Other examples file names do not contain the word `test`.
Follow-up to #27.
This PR fixes the following build error:
```console
$ bundle exec rake
/Users/koic/.rbenv/versions/3.5-dev/lib/ruby/3.5.0+1/bundled_gems.rb:59:in 'Kernel.require': cannot load such file -- mcp/transports/stdio (LoadError)
Did you mean? mcp/transports/stdio_transport_test
from /Users/koic/.rbenv/versions/3.5-dev/lib/ruby/3.5.0+1/bundled_gems.rb:59:in 'block (2 levels) in Kernel#replace_require'
from /Users/koic/src/github.com/modelcontextprotocol/ruby-sdk/test/mcp/transports/stdio_transport_test.rb:4:in '<top (required)>'
from /Users/koic/.rbenv/versions/3.5-dev/lib/ruby/3.5.0+1/bundled_gems.rb:59:in 'Kernel.require'
from /Users/koic/.rbenv/versions/3.5-dev/lib/ruby/3.5.0+1/bundled_gems.rb:59:in 'block (2 levels) in Kernel#replace_require'
from /Users/koic/.rbenv/versions/3.5-dev/lib/ruby/gems/3.5.0+1/gems/rake-13.3.0/lib/rake/rake_test_loader.rb:21:in 'block in <main>'
from /Users/koic/.rbenv/versions/3.5-dev/lib/ruby/gems/3.5.0+1/gems/rake-13.3.0/lib/rake/rake_test_loader.rb:6:in 'Array#select'
from /Users/koic/.rbenv/versions/3.5-dev/lib/ruby/gems/3.5.0+1/gems/rake-13.3.0/lib/rake/rake_test_loader.rb:6:in '<main>'
rake aborted!
Command failed with status (1)
/Users/koic/.rbenv/versions/3.5-dev/bin/bundle:25:in 'Kernel#load'
/Users/koic/.rbenv/versions/3.5-dev/bin/bundle:25:in '<main>'
Tasks: TOP => default => test
(See full trace by running task with --trace)
```
https://github.com/modelcontextprotocol/ruby-sdk/actions/runs/15428236624/job/43420346011
The following is stated in #27.
> Breaking Changes
> `MCP::Transports::StdioTransport` is now `MCP::Server::Transports::StdioTransport`
What is shown here is the new name `MCP::Server::Transports::StdioTransport`, not `MCP::Server::Transports::Stdio`.
Therefore, the file path has been updated from `lib/mcp/server/transports/stdio.rb` to `lib/mcp/server/transports/stdio_transport.rb` to
match the module name. If `MCP::Server::Transports::Stdio` is preferred instead, please let me know and I will open a separate PR.
- add support for resource templates
- improve capability negotiation on handlers
- clean up readme
- reduce default protocol version to "2024-11-05"
- address spec compliance of resources
- add debug gem to development
- alias ModelContextProtocol to MCP
- move prompt subclasses to subdir
- improve tool and prompt definition
- improve passing of server context to tools
- improve tool input schema validation
