[MCP Bundle] Add MCP profiler support to display server capabilities #866
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This adds a Web Profiler integration for the MCP Bundle that displays MCP server capabilities (tools, prompts, resources, resource templates) in the Symfony debug toolbar and profiler panel. Features: - ProfilingLoader to capture Registry reference during server build - DataCollector to collect and display MCP capabilities - Split templates for each capability type (tools, prompts, resources, resource templates) - Copy Schema button for tool input schemas - Nested tabs structure following Symfony profiler conventions Note: This implementation depends on the loader pattern. If MCP SDK PR symfony#146 (direct Registry injection via DI) is merged, this approach may need adjustment.
camilleislasse
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Nyholm,
OskarStark and
chr-hertel
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carsonbot
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chr-hertel
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Nov 14, 2025
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chr-hertel
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Thanks, this looks great already, but let's please switch to a TraceableRegistry once modelcontextprotocol/php-sdk#150 gets merged - makes sense?
chr-hertel
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Nov 14, 2025
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Would love to see some infos around the MCP Profiler and the screenshot in the documentation |
chr-hertel
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Nov 23, 2025
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We should be able to use/decorate the Registry directly now and skip the ProfilingLoader, right?
Now that modelcontextprotocol/php-sdk#150 is merged, the Registry can be injected directly into the Builder. This allows replacing the ProfilingLoader with a cleaner TraceableRegistry decorator pattern.
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Description
This PR adds a Web Profiler integration for the MCP Bundle that displays MCP server capabilities (tools, prompts, resources, resource templates) in the Symfony debug toolbar and profiler panel.
Features
Note: This implementation depends on the loader pattern. If MCP SDK PR #146 (direct Registry injection via DI) is merged, this approach may need adjustment.