Update dependency io.modelcontextprotocol:kotlin-sdk to v0.11.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
io.modelcontextprotocol:kotlin-sdk	0.8.1 → 0.11.0

---

Warning

Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

---

Release Notes

modelcontextprotocol/kotlin-sdk (io.modelcontextprotocol:kotlin-sdk)

v0.11.0

Compare Source

Adds URL-mode elicitation with typed schema definitions, configurable server payload size limits, and upgrades core dependencies to Kotlin 2.3.

Breaking Changes

ElicitRequestParams is now a sealed interface by @​devcrocod in #​660

Restructured to support both form-based and URL-based elicitation modes per the MCP specification. ElicitRequestParams changed from a data class to a sealed interface with two variants: ElicitRequestFormParams and ElicitRequestUrlParams. A deprecated factory function preserves source compatibility for existing calls.

- val params = ElicitRequestParams(message = "...", requestedSchema = schema)
+ val params = ElicitRequestFormParams(message = "...", requestedSchema = schema)

RequestedSchema.properties type changed by @​devcrocod in #​660

Changed from JsonObject to Map<String, PrimitiveSchemaDefinition> for type safety.

macosX64 target removed by @​devcrocod in #​625

The macosX64 native target was removed following its deprecation in Kotlin 2.2 and scheduled removal in Kotlin 2.3. Use macosArm64 instead.

Features

• URL-mode elicitation and typed PrimitiveSchemaDefinition hierarchy aligned with MCP specification by @​devcrocod in #​660
• Configurable max request payload size for StreamableHttpServerTransport via Configuration.maxRequestBodySize by @​jskjw157 in #​646
• Auto-install ContentNegotiation with McpJson in mcp(), mcpStreamableHttp(), and mcpStatelessStreamableHttp() — users no longer need to configure JSON serialization manually (#​664) by @​kpavlov in
  #​665
• notifications/elicitation/complete notification from server to client for out-of-band elicitation completion by
  @​devcrocod in #​667

Fixed

• Elicitation schema defaults are now applied for missing fields in client responses by @​devcrocod in #​661
• Duplicate initialize requests are now rejected with INVALID_REQUEST error by @​devcrocod in #​624

Maintenance

• Updated Kotlin to 2.3.10, Ktor to 3.3.3, kotlinx-io to 0.9.0, kotlinx-serialization to 1.10.0 by @​devcrocod in #​611
• Enabled SseTransportTest on Wasm and refactored test structure by @​devcrocod in #​662
• Improved dependabot configuration by @​devcrocod in #​619
• Updated mcp-kotlin to 0.10.0 across sample projects by @​kpavlov in #​645

Dependencies

• modelcontextprotocol/conformance to 0.1.16 in #​657
• atomicfu-gradle-plugin to 0.32.1 in #​644
• path-to-regexp to 8.4.0 in #​647
• Kotest group in #​629
• Testing group in #​630
• Gradle-plugins group in #​633
• Infrastructure group in #​632
• GitHub Actions group in #​631
• JavaScript dependencies group in #​627
• Cross-directory dependencies in #​634, #​648
• Sample project dependencies (mcp-kotlin, Ktor BOM) in #​638, #​651, #​652, #​654

Full Changelog: modelcontextprotocol/kotlin-sdk@0.10.0...0.11.0

v0.10.0

Compare Source

Highlights

This release adds MCP conformance testing infrastructure, SSE reconnection support, Tasks protocol types, resource template matching, and
tool execution properties. It also completes a deprecation cycle — removing all previously deprecated (error-level) symbols from
io.modelcontextprotocol.kotlin.sdk in favor of their replacements in io.modelcontextprotocol.kotlin.sdk.types.

Breaking Changes

• Deprecation cycle completed — All symbols deprecated at ERROR level in 0.9.0 have been removed by @​devcrocod (#​615). This includes
  the entire io.modelcontextprotocol.kotlin.sdk.types.kt compatibility file (type aliases such as CallToolResult, CancelledNotification,
  ClientCapabilities, CompleteRequest, etc.) and the legacy McpJson in io.modelcontextprotocol.kotlin.sdk. Migrate to the equivalents
  in io.modelcontextprotocol.kotlin.sdk.types.
• SSE/Streamable HTTP transport changes — StreamableHttpClientTransport now accepts ReconnectionOptions for configurable retry
  behavior by @​devcrocod (#​585, #​596). The previous constructor signatures remain available.

Features

• MCP conformance test infrastructure — Comprehensive conformance test suite covering core protocol operations, tool calls, elicitation,
  resources, prompts, and 20 OAuth/auth scenarios. Includes CI workflow, baseline tracking, and shell runner by @​devcrocod (#​585)
• SSE reconnection with retry support — Client transports now support configurable reconnection with exponential backoff via
  ReconnectionOptions (initial delay, max delay, multiplier, max retries) by @​devcrocod (#​596)
• Tasks protocol types — Added Task, TaskStatus, and related models per the MCP tasks specification by @​devcrocod (#​566)
• Resource templates with basic template matcher — Server-side support for URI template-based resource matching by @​kpavlov (#​502, #​606)
• Tool execution properties — Tool now exposes execution properties for richer tool metadata by @​devcrocod (#​567)

Bug Fixes

• Notifications not delivered over Streamable HTTP — Fixed server-side notification delivery for Streamable HTTP transport sessions by
  @​kpavlov (#​587, #​599)
• Conformance: SEP-1330 enum schemas — Corrected elicitation enum schemas in conformance tests by @​kpavlov (#​600)

Documentation

• New Streamable HTTP server sample by @​devcrocod (#​595)
• Updated client and server samples by @​devcrocod (#​598)
• Added Context7 config file by @​devcrocod (#​605)
• Updated AGENTS.md by @​devcrocod (#​612)
• Added missing KDoc for public API members by @​kpavlov (#​621)

Maintenance

• Simplified and cleaned up CI workflows by @​devcrocod (#​617)
• Modernized TypeScript integration tests, renamed SSE references to HTTP by @​devcrocod (#​618)
• Bumped Gradle wrapper from 9.3.1 to 9.4.1 by @​dependabot (#​614)
• Fix Kotlin language and api version to 2.1 by @​kpavlov (#​620)

Full Changelog: modelcontextprotocol/kotlin-sdk@0.9.0...0.10.0

v0.9.0

Compare Source

What's Changed

Breaking Changes

• Server call handlers now receive a RequestContext — handler lambdas for tools, prompts, and resources have a new context parameter providing access to request metadata (#​515) by @​rnett
• Ktor extension functions moved from Routing to Route — update call sites: routing { mcpSse() } → route("/mcp") { mcpSse() } or use directly in any Route block (#​531) by @​kpavlov
• StdioServerTransport rethrows CancellationException — cancellation is no longer silently swallowed; ReadBuffer parsing was also fixed (#​571) by @​kpavlov

New Features

• kotlin-sdk-testing module — new artifact providing an in-process, channel-based TestClientTransport / TestServerTransport for unit testing MCP servers and clients without network I/O (#​505) by @​kpavlov
• StreamableHttpServerTransport.Configuration — configurable builder for the Streamable HTTP server transport (timeouts, session handling, etc.) (#​560) by @​kpavlov
• Ktor extensions for Streamable HTTP — mcpStreamableHttp() Ktor plugin and routing DSL for mounting a Streamable HTTP MCP server (#​504 by @​devcrocod, #​568 by @​kpavlov)
• $defs support in ToolSchema — JSON Schema $defs / definitions can now be expressed in tool input schemas (#​526) by @​i1bro

Bug Fixes

• Fixed SSE transport endpoint resolution for non-root mount paths (#​565) by @​Amaneusz
• Fixed StdioClientTransport hanging indefinitely by adding proper read timeouts (#​528) by @​kpavlov

Improvements

• Introduced AbstractClientTransport base class, simplifying client transport lifecycle management (#​516) by @​kpavlov
• Deprecation cycle started — annotated APIs scheduled for removal in a future release (#​498) by @​devcrocod
• Detekt static analysis integrated into CI (#​493, #​507) by @​kpavlov
• Code coverage reporting added via Codecov (#​579, #​580) by @​kpavlov
• Flaky StdioClientTransport tests replaced with real stdin pipe–based tests (#​508) by @​kpavlov

Dependency Updates

• Kotest 6.1.2, MockK 1.14.9, AtomicFU 0.31.0, Gradle 9.3.1, Kover 0.9.7

New Contributors

• @​jskjw157 made their first contribution in #​486
• @​i1bro made their first contribution in #​526
• @​localden made their first contribution in #​536
• @​aozherelyeva made their first contribution in #​551
• @​rnett made their first contribution in #​515
• @​Amaneusz made their first contribution in #​565

Full Changelog: modelcontextprotocol/kotlin-sdk@0.8.4...0.9.0

v0.8.4

Compare Source

Changes

• feat: Ktor extensions for streamable http (#​504) by @​devcrocod
• fix: Add $defs to ToolSchema and tests (#​526) by @​i1bro

Full Changelog: modelcontextprotocol/kotlin-sdk@0.8.3...0.8.4

v0.8.3

Compare Source

What's Changed

Bugfixes

• breaking change!: StdioClientTransport.send(...) and StreamableHttpClientTransport.send(...) now throw McpException when not ready (#​487) by @​kpavlov
• #​450 Properly check content type (#​451) by @​nerzhulart
• Fix flaky StdioClientTransportErrorHandlingTest (#​457) by @​kpavlov
• Fix tests for notifications (#​446) by @​tiginamaria
• Fix kotlin-mcp-server sample (#​459) by @​devcrocod
• Fix GitHub Actions build workflow (#​474) by @​kpavlov
• Fix confirmance tests (#​483) by @​Fuud and @​kpavlov
• Refactor integration test infrastructure, fix and enable tests with ts-client (#​478) by @​kpavlov

New features

• Mark DSL functions for types as public (#​472) by @​kpavlov

Chores

• Update licensing to Apache 2.0 for new contributions (#​481) by @​domdomegg
• Add centralized TypeScript server factory for integration tests (#​477) by @​kpavlov
• Bump actions/setup-node from 4 to 6 (#​453) by @​dependabot
• Update GitHub Actions workflow (#​452) by @​kpavlov
• Bump io.mockk:mockk from 1.14.6 to 1.14.7 (#​455) by @​dependabot
• Bump io.github.oshai:kotlin-logging from 7.0.13 to 7.0.14 (#​471) by @​dependabot
• Bump org.jetbrains.kotlinx.kover from 0.9.3 to 0.9.4 (#​466) by @​dependabot
• Bump io.netty:netty-bom from 4.2.7.Final to 4.2.9.Final (#​468) by @​dependabot
• Bump actions/upload-artifact from 5 to 6 (#​465) by @​dependabot

New Contributors

• @​nathaniellombardi-toast made their first contribution in #​472
• @​domdomegg made their first contribution in #​481
• @​Fuud made their first contribution in #​483

Full Changelog: modelcontextprotocol/kotlin-sdk@0.8.1...0.8.2

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.