---
sessionId: session-260723-110757-cqjs
---

# Requirements

### Overview & Goals

Update all outdated dependencies in a single PR, fixing any breaking API changes and dependency conflicts, then close the 6 stale Renovate PRs. The goal is to bring the project fully up to date with minimal disruption.

### Scope

#### In Scope
- Update 6 dependencies in `gradle/libs.versions.toml`:
  - `logback`: 1.5.32 → 1.6.0
  - `gradleToolingApi`: 9.5.0 → 9.6.1
  - `mcpSdk`: 0.7.2 → 0.14.0
  - `ktor`: 3.3.3 → 3.5.1
  - `ktreesitter`: 0.24.1 → 0.25.1
  - `slf4j`: align to whatever version gradle-tooling-api 9.6.1 strictly requires (currently 2.0.17, verify after bump)
- Fix all compilation errors from breaking API changes
- Fix dependency resolution conflicts (SLF4J strict version)
- Fix test failures caused by the updates
- Close the 6 open Renovate PRs (#227, #204, #195, #183, #181, #176) after the update PR is merged

#### Out of Scope
- Updating dependencies not covered by the open Renovate PRs
- Refactoring code beyond what's needed for API migration
- Changing the Renovate configuration

### Functional Requirements
- All existing tests pass after the update (`./gradlew test integrationTest`)
- The MCP server starts and serves tools correctly
- Tree-sitter declaration extraction works with the new cursor-based API
- No dependency resolution warnings or conflicts

### User Stories
- As a maintainer, I want all dependencies up to date in one clean PR so that I don't have to review 6 separate Renovate PRs with interdependent conflicts.
- As a user of the MCP server, I want the server to work identically after the update so that my workflows are unaffected.

# Technical Design

### Current Implementation

All dependency versions are defined in `gradle/libs.versions.toml`. The key affected code:

- **MCP SDK** (`mcpSdk = "0.7.2"`): Used across ~27 files. The core tool registration is in `src/main/kotlin/dev/rnett/gradle/mcp/mcp/McpServerComponent.kt` which uses `CallToolResult` and `server.addTool(tool) { request -> ... }`.
- **ktreesitter** (`ktreesitter = "0.24.1"`): Used in `TreeSitterDeclarationExtractor.kt` and `TreeSitterLanguageProvider.kt`. Uses `query.matches(root)` and `match.captures`.
- **Ktor** (`ktor = "3.3.3"`): Shared version ref for both the plugin and all ktor libraries.
- **SLF4J** (`slf4j = "2.0.17"`): Pinned in catalog; gradle-tooling-api 9.5.x strictly requires this version.

### Key Decisions

1. **Single PR for all updates** (user-confirmed): Avoids interdependency conflicts between separate PRs (e.g., ktor + MCP SDK share SLF4J constraints).
2. **SLF4J version follows gradle-tooling-api's pin** (user-confirmed): If gradle-tooling-api 9.6.1 strictly pins an SLF4J version, use that version in the catalog rather than forcing a newer one. Other dependencies (ktor, logback) must be compatible with the pinned version. Do NOT add a resolution strategy to override the pin.
3. **Close Renovate PRs after merge**: Rather than trying to fix/merge each individually, close them with a comment referencing the consolidated update PR.

### Proposed Changes

#### 1. Version Catalog (`gradle/libs.versions.toml`)
```toml

# Updated versions

logback = "1.6.0"
gradleToolingApi = "9.6.1"
mcpSdk = "0.14.0"
ktor = "3.5.1"
ktreesitter = "0.25.1"
slf4j = "<version pinned by gradle-tooling-api 9.6.1>"  # verify via `./gradlew dependencies`
```

#### 2. MCP SDK Migration (`McpServerComponent.kt` + affected files)
- Update imports: `CallToolResult` moved to `io.modelcontextprotocol.kotlin.sdk.types.CallToolResult`
- Update `addTool` handler lambdas: `{ request -> ... }` → `{ request, context -> ... }`
- Check all 27 files importing `io.modelcontextprotocol` for additional breaking changes (server creation, transport setup, type renames)
- The `tool` inline function's generic return type handling may need adjustment since the error mentions `O (of fun <I, O> tool)`

#### 3. ktreesitter Migration (`TreeSitterDeclarationExtractor.kt`)
- Replace `query.matches(root)` with `QueryCursor().use { cursor -> cursor.matches(query, root) }`
- Update capture access: `match.captures` now returns `List<QueryCapture>` — access nodes via `capture.node`
- Apply same pattern to `packageQuery.matches(root)` usage (~line 231)
- Check `TreeSitterLanguageProvider.kt` for any affected API usage

#### 4. SLF4J / Dependency Resolution
- After bumping `gradleToolingApi` to 9.6.1, run `./gradlew dependencies` to determine which SLF4J version it strictly requires.
- Set the `slf4j` version ref in the catalog to that pinned version.
- Verify ktor 3.5.1 and logback 1.6.0 are compatible with the pinned SLF4J version (they generally accept any 2.0.x).
- Do NOT add a `resolutionStrategy { force(...) }` — respect the tooling API's constraint.

#### 5. Logback Test Fix
- Investigate `GradleDependencyIntegrationTest.kt:598` assertion failure
- Likely an output format or behavior change in logback 1.6.0 affecting test expectations

### File Structure

 File | Change Type |
------|-------------|
 `gradle/libs.versions.toml` | Modify (6 version bumps) |
 `src/main/kotlin/.../mcp/McpServerComponent.kt` | Modify (API migration) |
 `src/main/kotlin/.../dependencies/search/TreeSitterDeclarationExtractor.kt` | Modify (QueryCursor migration) |
 `src/main/kotlin/.../dependencies/search/TreeSitterLanguageProvider.kt` | Possibly modify |
 `build.gradle.kts` | Possibly modify (resolution strategy) |
 Other MCP SDK importing files (27 total) | Modify as needed for import/type changes |
 `src/integrationTest/.../GradleDependencyIntegrationTest.kt` | Modify (test assertion fix) |

### Risks

- **MCP SDK 0.7.2 → 0.14.0 is a large jump**: There may be additional breaking changes beyond `CallToolResult` (server builder API, transport changes, serialization). The 27 affected files need careful compilation checking.
- **SLF4J strict constraint**: If gradle-tooling-api 9.6.1 pins an older SLF4J (e.g., 2.0.17), logback 1.6.0 or ktor 3.5.1 may require a newer version. Mitigation: verify compatibility; if incompatible, consider holding logback/ktor at versions compatible with the pinned SLF4J.
- **Logback 1.6.0 behavior changes**: The test failure may indicate a real behavioral change that needs more than a test assertion fix.
- **Ktor 3.3.3 → 3.5.1**: Minor version but may have deprecated API removals affecting server setup or routing.

# Testing

### Validation Approach

Run the full test suite after all changes are applied. Fix failures iteratively.

### Key Scenarios
- `./gradlew test` — all unit tests pass
- `./gradlew integrationTest` — all integration tests pass (especially `GradleDependencyIntegrationTest`)
- MCP server starts successfully and tools are callable
- Tree-sitter declaration extraction returns correct results for Kotlin/Java sources
- Dependency resolution completes without conflicts (`./gradlew dependencies` shows no FAILED entries)

### Edge Cases
- MCP tool handlers returning different result types (String, Unit, structured JSON, direct CallToolResult)
- QueryCursor lifecycle management (must be closed properly to avoid native memory leaks)
- SLF4J binding compatibility between logback 1.6.0 and the gradle-tooling-api-pinned slf4j-api version

### Test Changes
- Fix assertion in `GradleDependencyIntegrationTest.kt:598` for logback 1.6.0 output changes
- Update any test fixtures that construct `CallToolResult` directly
- Verify `McpServerFixture.kt` and `ChannelBasedInMemoryTransport.kt` work with new SDK transport API

# Delivery Steps

### ✓ Step 1: Update version catalog and resolve dependency conflicts
All 6 dependency versions are bumped in the catalog and the project resolves without conflicts.

- Update `gradle/libs.versions.toml`: bump `logback` to 1.6.0, `gradleToolingApi` to 9.6.1, `mcpSdk` to 0.14.0, `ktor` to 3.5.1, `ktreesitter` to 0.25.1.
- Run `./gradlew dependencies` to determine which SLF4J version gradle-tooling-api 9.6.1 strictly requires, then set the `slf4j` catalog entry to that version.
- Verify ktor 3.5.1 and logback 1.6.0 resolve cleanly against the pinned SLF4J version (no FAILED entries).
- Verify no other transitive dependency conflicts exist between the updated versions.

### ✓ Step 2: Migrate MCP SDK usage from 0.7.2 to 0.14.0 API
All MCP SDK compilation errors are resolved and the server compiles cleanly.

- Update imports in all affected files: `CallToolResult` and related types moved to `io.modelcontextprotocol.kotlin.sdk.types` package.
- Update `addTool` handler lambdas in `McpServerComponent.kt` to accept the new `(request, context)` signature.
- Review and fix the `tool` inline function's generic return type handling (the `O` type parameter interaction with `CallToolResult`).
- Check all 27 files importing `io.modelcontextprotocol` for additional breaking changes (server builder, transport, serialization APIs).
- Update test fixtures (`McpServerFixture.kt`, `ChannelBasedInMemoryTransport.kt`) if transport/server creation APIs changed.
- Compile and fix iteratively until `./gradlew compileKotlin compileTestKotlin` passes.

### ✓ Step 3: Migrate ktreesitter usage to 0.25.1 cursor-based API
Tree-sitter declaration extraction compiles and works with the new QueryCursor pattern.

- In `TreeSitterDeclarationExtractor.kt`: replace `query.matches(root)` with `QueryCursor().use { cursor -> cursor.matches(query, root) }`.
- Update capture access pattern: `match.captures` now returns `List<QueryCapture>` — access nodes via `capture.node` property.
- Apply the same migration to `packageQuery.matches(root)` usage (~line 231).
- Check `TreeSitterLanguageProvider.kt` for any affected API usage.
- Ensure QueryCursor is properly closed (use `use {}` block) to prevent native memory leaks.
- Verify compilation passes for the search/indexing module.

### ✓ Step 4: Fix test failures and run full validation
All tests pass and the project is fully validated with the updated dependencies.

- Investigate and fix `GradleDependencyIntegrationTest.kt:598` assertion failure caused by logback 1.6.0 behavior changes.
- Run `./gradlew test` and fix any unit test failures from the API migrations.
- Run `./gradlew integrationTest` and fix any integration test failures.
- Run `./gradlew :updateToolsList` if any tool metadata changed due to MCP SDK updates.
- Verify the full build passes: `./gradlew check`.

### ✓ Step 5: Close stale Renovate PRs
All 6 open Renovate PRs are closed with a reference to the consolidated update.

- Close PRs #227, #204, #195, #183, #181, #176 with a comment: "Superseded by consolidated dependency update in #<new-pr-number>."
- Verify no other Renovate PRs were opened during the work period.