Issues

• Preserve native JSON types when passing arguments to tool handlers

  enhancement
  modelcontextprotocol/php-sdk#587 · Filter by author codekandis opened on Oct 11, 2026

• SchemaValidator rejects nested empty JSON objects as arrays

  bug
  modelcontextprotocol/php-sdk#586 · Filter by author m-vo opened on Oct 10, 2026
  4

• [Server] Handler fibers give integrations no hook to carry OpenTelemetry's context

  modelcontextprotocol/php-sdk#583 · Filter by author tony-stark-eth opened on Oct 10, 2026

• [Server] Bind Streamable HTTP sessions to the authenticated principal

  Server
  modelcontextprotocol/php-sdk#529 · Filter by author chr-hertel opened on Oct 5, 2026
  1

• [Server] Allow a RequestEvent listener to reject a request with a JSON-RPC error

  Server
  modelcontextprotocol/php-sdk#513 · Filter by author mglaman opened on Sep 23, 2026
  2

• [Server][Capability] Element sources should return values, and RegistryInterface should be sliced by role

  ADRbreaking changeneeds designServer
  modelcontextprotocol/php-sdk#495 · Filter by author chr-hertel opened on Sep 3, 2026

• Slicing the SDK into Multiple Packages

  needs confirmationneeds maintainer action
  modelcontextprotocol/php-sdk#489 · Filter by author chr-hertel opened on Aug 29, 2026 · 1.0
  3

  

• One placeholder-less resource template makes the whole server unserviceable

  Server
  modelcontextprotocol/php-sdk#476 · Filter by author wachterjohannes opened on Aug 23, 2026
  3

• [Server] Handler type uses bare Closure, hard to decorate RegistryInterface under strict PHPStan

  Server
  modelcontextprotocol/php-sdk#468 · Filter by author shahinataei-ts opened on Aug 20, 2026
  2

• Builder::build() silently skips configured file-based discovery when symfony/finder is missing — should fail loudly

  needs confirmationneeds maintainer actionServer
  modelcontextprotocol/php-sdk#398 · Filter by author laticrete-pimcore opened on Jul 17, 2026

• [Conformance] SEP-2484: Wire SEP traceability files into conformance test runner; surface per-SEP pass rates

  2026-07-28conformance-weeklyenhancementimproves spec compliance
  modelcontextprotocol/php-sdk#367 · Filter by author chr-hertel opened on May 26, 2026
  4

• [Client][Auth] SEP-2352: Key DCR registrations and tokens by AS issuer; reject cross-AS credential reuse

  2026-07-28authClientenhancementimproves spec compliance
  modelcontextprotocol/php-sdk#361 · Filter by author chr-hertel opened on May 26, 2026

• [Client][Auth] SEP-2468: Validate iss parameter in authorization response (RFC 9207)

  2026-07-28authClientenhancementimproves spec compliance
  modelcontextprotocol/php-sdk#360 · Filter by author chr-hertel opened on May 26, 2026

• [Schema] SEP-2106: Harden SchemaValidator against external $ref SSRF and composition DoS

  2026-07-28enhancementimproves spec complianceSchema
  modelcontextprotocol/php-sdk#358 · Filter by author chr-hertel opened on May 26, 2026

• [Schema] SEP-2106: Support JSON Schema 2020-12 vocabulary in SchemaGenerator (oneOf/anyOf/allOf/if-then-else/$ref)

  2026-07-28enhancementimproves spec complianceneeds designSchema
  modelcontextprotocol/php-sdk#356 · Filter by author chr-hertel opened on May 26, 2026

• [Client] SEP-2663 Tasks: Poll task handles and answer inputRequests

  2026-07-28enhancementimproves spec complianceServer
  modelcontextprotocol/php-sdk#349 · Filter by author chr-hertel opened on May 26, 2026

• [Server] SEP-2663 Tasks: Handlers return task handles; the application advances the task

  2026-07-28enhancementimproves spec complianceneeds designServer
  modelcontextprotocol/php-sdk#348 · Filter by author chr-hertel opened on May 26, 2026

• [Server] SEP-2663 Tasks: TaskStoreInterface with InMemory and PSR-16 stores

  2026-07-28enhancementimproves spec complianceneeds designServer
  modelcontextprotocol/php-sdk#347 · Filter by author chr-hertel opened on May 26, 2026

• [Server] SEP-2663 Tasks: TasksExtension, capability gate, tasks/* handlers

  2026-07-28enhancementimproves spec complianceneeds designServer
  modelcontextprotocol/php-sdk#346 · Filter by author chr-hertel opened on May 26, 2026

• [Schema] SEP-2663 Tasks: Task shape, resultType discriminator, tasks/* request/result types

  2026-07-28enhancementimproves spec complianceSchema
  modelcontextprotocol/php-sdk#345 · Filter by author chr-hertel opened on May 26, 2026

• [2026-07-28] Governance: deprecations, lifecycle, conformance, SDK tier

  2026-07-28Clientdocumentationenhancementimproves spec complianceServer
  modelcontextprotocol/php-sdk#339 · Filter by author chr-hertel opened on May 26, 2026

• [2026-07-28] Authorization hardening (OAuth/OIDC)

  2026-07-28authClientenhancementimproves spec complianceServer
  modelcontextprotocol/php-sdk#338 · Filter by author chr-hertel opened on May 26, 2026

• [2026-07-28] Schema modernization & error code standardization

  2026-07-28enhancementimproves spec complianceSchema
  modelcontextprotocol/php-sdk#337 · Filter by author chr-hertel opened on May 26, 2026

• [2026-07-28] Extensions framework + Tasks + MCP Apps

  2026-07-28Clientenhancementimproves spec complianceneeds designSchemaServer
  modelcontextprotocol/php-sdk#335 · Filter by author chr-hertel opened on May 26, 2026

• [Client] Extend conformance client.php with scenario context env vars

  authClientenhancement
  modelcontextprotocol/php-sdk#329 · Filter by author soyuka opened on May 19, 2026