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feat(capability): add dynamic provider interfaces

breaking changeBreaking the Backwards Compatibility PromiseBreaking the Backwards Compatibility Promise

needs more workNot ready to be merged yet, needs additional follow-up from the author(s).Not ready to be merged yet, needs additional follow-up from the author(s).

Status: Open (in progress).

modelcontextprotocol/php-sdknumber 180

#180 In modelcontextprotocol/php-sdk;

· e0ipso opened on Dec 5, 2025

fix: clear() wiping dynamically registered tools by tracking discovered state on references

Status: Open (in progress).

modelcontextprotocol/php-sdknumber 251

#251 In modelcontextprotocol/php-sdk;

· soyuka opened on Mar 4, 2026

[Server] Add configurable session garbage collection

ServerIssues & PRs related to the Server componentIssues & PRs related to the Server component

Status: Open (in progress).

modelcontextprotocol/php-sdknumber 258

#258 In modelcontextprotocol/php-sdk;

· chr-hertel opened on Mar 10, 2026