{"passport":{"unfragile":{"@version":"1.0","version":"2026-05","artifact":{"id":"rust-analyzer","slug":"rust-analyzer","name":"rust-analyzer","type":"extension","url":"https://marketplace.visualstudio.com/items?itemName=rust-lang.rust-analyzer","page_url":"https://unfragile.ai/rust-analyzer","categories":["code-editors"],"tags":[],"pricing":{"model":"free","free":true,"starting_price":null},"status":"active","verified":false},"capabilities":[{"id":"rust-analyzer__cap_0","uri":"capability://code.generation.editing.semantic.aware.code.completion.with.import.resolution","name":"semantic-aware code completion with import resolution","description":"Provides symbol-based code completion by analyzing the current file and workspace through LSP, automatically resolving and inserting necessary imports. Uses Rust's type system and symbol table to rank suggestions contextually, enabling developers to complete code with full namespace awareness rather than simple text matching.","intents":["Complete a function call with correct module path automatically inserted","Discover available methods on a type without manual namespace lookup","Reduce boilerplate by auto-importing commonly used crate symbols"],"best_for":["Rust developers working in VSCode","Teams migrating from manual import management to IDE-assisted workflows"],"limitations":["Completion ranking depends on workspace indexing completeness — large monorepos may experience delayed suggestions until initial analysis completes","Does not provide ML-based relevance ranking; suggestions ordered by symbol type and scope proximity only","Import resolution limited to crates in current workspace and Cargo.lock dependencies"],"requires":["VSCode 1.50+","Rust toolchain installed via rustup","Cargo.toml in workspace root"],"input_types":["Rust source code (partial, at cursor position)"],"output_types":["Completion items with insert text including imports","Structured completion metadata (kind, documentation, detail)"],"categories":["code-generation-editing","language-server"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"rust-analyzer__cap_1","uri":"capability://code.generation.editing.incremental.type.inference.display.with.inlay.hints","name":"incremental type inference display with inlay hints","description":"Performs real-time type inference using Hindley-Milner algorithm and displays inferred types as inline hints (parameter names, return types, closure captures) without requiring explicit annotations. Leverages LSP's inlay hint protocol to render non-intrusive overlays in the editor, updating incrementally as code changes.","intents":["Understand inferred types without hovering or adding explicit type annotations","Verify closure capture semantics and lifetime parameters at a glance","Reduce cognitive load when reading unfamiliar generic code"],"best_for":["Developers learning Rust's type system","Teams maintaining complex generic or trait-heavy codebases","Solo developers who prefer implicit typing with visibility into inference"],"limitations":["Inlay hints can clutter the editor if enabled for all types — developers must configure hint granularity (parameter names, type hints, chaining hints separately)","Type inference display is read-only; does not auto-generate type annotations in code","Performance degrades on files with deeply nested generics or complex trait bounds (>500 lines with heavy inference)"],"requires":["VSCode 1.50+","rust-analyzer extension enabled","Inlay hints feature enabled in VSCode settings (rust-analyzer.inlayHints.enable)"],"input_types":["Rust source code with implicit or explicit type annotations"],"output_types":["Inline text overlays (non-editable hints)","Hover tooltips with full type details"],"categories":["code-generation-editing","language-server"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"rust-analyzer__cap_10","uri":"capability://memory.knowledge.dependency.and.crate.version.analysis","name":"dependency and crate version analysis","description":"Analyzes Cargo.toml and Cargo.lock to provide information about project dependencies, including version constraints, available updates, and dependency tree visualization. Displays dependency metadata on hover and provides quick actions to update or add dependencies.","intents":["Check the current version of a dependency and available updates","Understand the dependency tree and identify transitive dependencies","Update a dependency version with a single click"],"best_for":["Developers managing project dependencies","Teams tracking dependency updates and security patches","Monorepo maintainers understanding cross-crate dependencies"],"limitations":["Dependency analysis is limited to Cargo.toml and Cargo.lock; does not check for security vulnerabilities (requires separate tools like cargo-audit)","Available updates are fetched from crates.io; offline mode is not supported","Dependency tree visualization is text-based; no graphical visualization in the IDE","Quick actions for updating dependencies modify Cargo.toml but do not run cargo update"],"requires":["VSCode 1.50+","rust-analyzer extension enabled","Valid Cargo.toml in workspace"],"input_types":["Dependency name in Cargo.toml"],"output_types":["Dependency metadata (version, source, features)","Available updates and version constraints","Dependency tree (text format)"],"categories":["memory-knowledge","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"rust-analyzer__cap_11","uri":"capability://code.generation.editing.lifetime.and.borrow.checker.visualization","name":"lifetime and borrow checker visualization","description":"Displays lifetime parameters and borrow checker information through inlay hints and hover tooltips, helping developers understand ownership and borrowing rules. Shows lifetime annotations, mutable/immutable borrow status, and move semantics through semantic highlighting and inline annotations.","intents":["Understand why a borrow checker error occurs by visualizing lifetime scopes","Verify that a function's lifetime parameters are correct","Identify unnecessary clones or copies by understanding ownership semantics"],"best_for":["Developers learning Rust's ownership and borrowing system","Teams debugging borrow checker errors","Developers optimizing code for performance by reducing unnecessary clones"],"limitations":["Lifetime visualization is approximate and may not match the compiler's final lifetime inference","Borrow checker errors are not predicted in the IDE; only compiler errors are reported","Lifetime hints can clutter the editor if enabled for all lifetimes; developers must configure granularity","Complex lifetime relationships (e.g., higher-ranked trait bounds) are not visualized"],"requires":["VSCode 1.50+","rust-analyzer extension enabled","Inlay hints enabled for lifetimes (rust-analyzer.inlayHints.lifetimeElisionHints)"],"input_types":["Rust source code with lifetime parameters"],"output_types":["Inline lifetime annotations","Hover tooltips with borrow status","Semantic highlighting for mutable/immutable bindings"],"categories":["code-generation-editing","memory-knowledge"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"rust-analyzer__cap_12","uri":"capability://automation.workflow.test.discovery.and.test.runner.integration","name":"test discovery and test runner integration","description":"Discovers Rust tests (functions marked with #[test] or in test modules) and provides UI elements (CodeLens) to run individual tests or test suites directly from the editor. 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Applies rustfmt's formatting rules to ensure consistent code style across the project. Respects rustfmt.toml configuration files.","intents":["Automatically format code to match project style on save","Format a file or selection on demand without running rustfmt manually","Enforce consistent code style across the team","Avoid merge conflicts caused by formatting differences"],"best_for":["Teams enforcing consistent code style","Developers wanting automatic formatting without manual invocation","Projects with strict style guidelines"],"limitations":["Formatting is limited to what rustfmt supports; some style preferences may not be configurable","Format-on-save can add latency (100-500ms) to file saves on large files","rustfmt must be installed separately (typically via rustup)","Some code patterns (e.g., very long lines) may not format as expected"],"requires":["VSCode 1.50 or later","Rust toolchain with rustfmt (rustup component add rustfmt)","Valid Cargo project"],"input_types":["Rust source code (full file or selection)"],"output_types":["Formatted Rust code"],"categories":["automation-workflow","code-generation-editing"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"rust-analyzer__cap_2","uri":"capability://search.retrieval.workspace.wide.symbol.search.and.navigation","name":"workspace-wide symbol search and navigation","description":"Indexes all Rust symbols (functions, types, traits, modules) across the workspace and provides fast fuzzy search via LSP workspace symbol queries. Enables go-to-definition, go-to-implementation, and go-to-type-definition navigation by resolving symbol references through the project's dependency graph and module hierarchy.","intents":["Jump to the definition of a function or type from any file in the workspace","Find all implementations of a trait across multiple crates","Locate type definitions for generic parameters or associated types"],"best_for":["Developers navigating large Rust codebases (>10k lines)","Teams with multi-crate workspaces or monorepos","Refactoring workflows requiring cross-file symbol tracking"],"limitations":["Initial workspace indexing can take 10-30 seconds on first load for large projects; subsequent queries are fast but depend on background re-indexing","Navigation limited to symbols in current workspace and published dependencies in Cargo.lock — external crates require source to be present locally","Go-to-implementation only works for trait implementations; does not resolve dynamic dispatch or macro-generated code"],"requires":["VSCode 1.50+","Rust toolchain with source code (rustup component add rust-src)","Workspace with valid Cargo.toml"],"input_types":["Symbol name or partial name (fuzzy search)","Cursor position in code (for definition/implementation lookup)"],"output_types":["File location and line number","Symbol metadata (kind, visibility, documentation)"],"categories":["search-retrieval","code-generation-editing"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"rust-analyzer__cap_3","uri":"capability://code.generation.editing.semantic.syntax.highlighting.with.trait.and.lifetime.awareness","name":"semantic syntax highlighting with trait and lifetime awareness","description":"Performs semantic tokenization (not just regex-based syntax highlighting) to color code Rust constructs based on their semantic role: traits, lifetimes, mutable bindings, unsafe blocks, and macro invocations. Uses LSP semantic tokens protocol to send fine-grained token information to the editor, enabling theme-aware coloring that reflects code semantics.","intents":["Visually distinguish between types, traits, and trait methods in complex generic code","Quickly identify unsafe blocks and mutable variable usage","Understand lifetime parameters and their scope through color coding"],"best_for":["Developers reading unfamiliar Rust code with heavy trait usage","Teams enforcing unsafe code review through visual highlighting","Developers with color-blindness who use custom themes with high contrast"],"limitations":["Semantic highlighting requires VSCode theme support for semantic token modifiers; fallback to standard syntax highlighting if theme lacks semantic token definitions","Performance impact on very large files (>5000 lines) due to per-token semantic analysis","Macro-generated code is not semantically highlighted because expansion happens at compile time, not in the LSP"],"requires":["VSCode 1.56+ (semantic tokens protocol support)","VSCode theme with semantic token definitions","rust-analyzer extension enabled"],"input_types":["Rust source code"],"output_types":["Semantic token stream with type and modifier information","Editor-rendered colored text"],"categories":["code-generation-editing","language-server"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"rust-analyzer__cap_4","uri":"capability://code.generation.editing.inline.error.diagnostics.with.actionable.code.assists","name":"inline error diagnostics with actionable code assists","description":"Performs real-time compilation-like analysis (without full compilation) to detect errors, warnings, and hints, displaying them as inline squiggles with quick-fix suggestions. Code assists (refactoring actions) are provided via LSP code action protocol, allowing one-click application of compiler suggestions like adding missing imports, fixing type mismatches, or applying lint suggestions.","intents":["Catch compilation errors before running cargo build","Apply compiler-suggested fixes (e.g., 'add missing import') with a single click","Understand why code is invalid with detailed error messages and suggestions"],"best_for":["Developers iterating rapidly on Rust code","Teams with strict pre-commit linting requirements","Beginners learning Rust who benefit from immediate error feedback"],"limitations":["Diagnostics are approximate and may not match final compiler output for complex macro expansions or conditional compilation","Code assists are limited to simple transformations (imports, renames, trait derives); complex refactorings require manual intervention","Macro-generated errors are not reported because macro expansion is deferred to compile time","Performance degrades on files with many unresolved symbols or circular dependencies"],"requires":["VSCode 1.50+","rust-analyzer extension enabled","Valid Cargo.toml and workspace structure"],"input_types":["Rust source code (partial or complete)"],"output_types":["Diagnostic items (error, warning, info, hint)","Code action suggestions with edit ranges"],"categories":["code-generation-editing","safety-moderation"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"rust-analyzer__cap_5","uri":"capability://code.generation.editing.symbol.renaming.with.cross.file.refactoring","name":"symbol renaming with cross-file refactoring","description":"Enables safe renaming of Rust symbols (functions, types, variables, modules) across the entire workspace by analyzing scope and visibility rules. Uses LSP rename protocol to compute all affected locations, respecting Rust's module system and visibility modifiers to avoid breaking changes or creating shadowing issues.","intents":["Rename a function and automatically update all call sites across multiple files","Refactor a type name and update all type annotations and trait implementations","Rename a module and update all use statements and re-exports"],"best_for":["Teams performing large-scale refactoring","Developers maintaining public APIs who need to track all usages","Solo developers who want safe, automated renaming without manual search-and-replace"],"limitations":["Renaming does not update documentation comments or string literals that reference the symbol name","Macro-generated symbols cannot be renamed because they are not tracked in the symbol table","Renaming across crate boundaries (public symbols) may miss external usages if those crates are not in the workspace","Performance scales with workspace size; renaming in large monorepos may take 1-5 seconds"],"requires":["VSCode 1.50+","rust-analyzer extension enabled","Cursor positioned on a symbol to rename"],"input_types":["Symbol name and new name (text input)"],"output_types":["List of file edits with old and new symbol locations","Workspace edit applied atomically"],"categories":["code-generation-editing","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"rust-analyzer__cap_6","uri":"capability://search.retrieval.find.all.references.with.usage.context","name":"find all references with usage context","description":"Locates all usages of a symbol (function, type, variable, trait) across the workspace and displays them in a structured list with code context. Uses LSP references protocol to compute all locations where a symbol is read, written, or referenced, filtering by scope and visibility to avoid false positives.","intents":["Understand the impact of changing a public function by seeing all call sites","Find all implementations of a trait method across the codebase","Identify dead code by checking if a symbol is referenced anywhere"],"best_for":["Developers assessing the scope of changes before refactoring","Teams performing impact analysis on public APIs","Code reviewers understanding symbol usage patterns"],"limitations":["References in comments, documentation, or string literals are not detected","Macro-generated references are not tracked because they are expanded at compile time","References in external crates are not found unless those crates are in the workspace","Performance degrades for heavily-used symbols (e.g., common trait methods) in large workspaces"],"requires":["VSCode 1.50+","rust-analyzer extension enabled","Cursor positioned on a symbol"],"input_types":["Symbol name and position in code"],"output_types":["List of file locations with line numbers and code context","Structured reference metadata (read, write, definition)"],"categories":["search-retrieval","code-generation-editing"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"rust-analyzer__cap_7","uri":"capability://memory.knowledge.hover.documentation.and.type.inspection","name":"hover documentation and type inspection","description":"Displays comprehensive information on hover, including inferred types, function signatures, documentation comments, and trait bounds. Fetches documentation from Cargo dependencies and renders it with syntax highlighting, enabling developers to understand APIs without leaving the editor or consulting external documentation.","intents":["Quickly check the signature and documentation of a function without navigating to its definition","Understand the type of an expression or variable at a glance","Inspect trait bounds and generic constraints on a type"],"best_for":["Developers exploring unfamiliar APIs or dependencies","Teams with comprehensive documentation practices","Solo developers who prefer in-editor documentation over external docs"],"limitations":["Documentation is only available if the dependency includes doc comments; undocumented code shows only type information","Hover information for macro-generated code is limited because macros are expanded at compile time","Large documentation strings (>10KB) may cause hover tooltips to render slowly","Markdown rendering in hover is basic; complex formatting may not display correctly"],"requires":["VSCode 1.50+","rust-analyzer extension enabled","Cursor hovering over a symbol"],"input_types":["Symbol position in code"],"output_types":["Formatted hover tooltip with type, signature, and documentation","Markdown-rendered documentation"],"categories":["memory-knowledge","code-generation-editing"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"rust-analyzer__cap_8","uri":"capability://code.generation.editing.macro.expansion.preview.and.analysis","name":"macro expansion preview and analysis","description":"Provides limited visibility into macro expansions by showing the expanded code in a preview panel, enabling developers to understand what code a macro generates. Uses Rust's macro expansion engine (via rustc) to compute expansions, but does not provide semantic analysis of expanded code (type checking, completion, etc.).","intents":["Debug macro invocations by seeing the generated code","Understand complex derive macros or procedural macros","Verify that a macro expansion produces the expected code"],"best_for":["Developers working with complex macros or custom derive macros","Teams maintaining macro-heavy codebases (e.g., async frameworks, serialization libraries)","Debugging macro-related compilation errors"],"limitations":["Macro expansion preview is read-only and does not provide semantic analysis (no completion, type checking, or diagnostics in expanded code)","Expansion is slow for complex macros (1-5 seconds) because it requires invoking rustc","Procedural macros cannot be expanded in the IDE because they require compilation; only declarative macros are supported","Expansion preview is not cached, so repeated expansions of the same macro are re-computed"],"requires":["VSCode 1.50+","rust-analyzer extension enabled","Cursor positioned on a macro invocation"],"input_types":["Macro invocation in Rust code"],"output_types":["Expanded Rust code (text, read-only)","Expansion metadata (macro name, arguments)"],"categories":["code-generation-editing","memory-knowledge"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"rust-analyzer__cap_9","uri":"capability://automation.workflow.test.discovery.and.execution.integration","name":"test discovery and execution integration","description":"Discovers Rust test functions (marked with #[test] or #[tokio::test]) across the workspace and provides inline UI to run, debug, or profile individual tests or test suites. Integrates with VSCode's test explorer and provides real-time test results with pass/fail status and execution time.","intents":["Run a single test from the editor without opening a terminal","Debug a failing test by setting breakpoints and stepping through code","View test execution time and identify slow tests"],"best_for":["Developers practicing test-driven development (TDD)","Teams with comprehensive test suites requiring frequent test execution","Debugging test failures without leaving the IDE"],"limitations":["Test discovery is limited to standard Rust test functions; custom test frameworks (e.g., criterion, proptest) are not discovered automatically","Debugging tests requires a debugger extension (e.g., CodeLLDB); debugging is not built into rust-analyzer","Test execution is serial; no built-in parallel test execution UI (though cargo test --parallel is supported)","Test output is captured and displayed in the test explorer; full stdout/stderr is not available in the IDE"],"requires":["VSCode 1.50+","rust-analyzer extension enabled","Rust test functions with #[test] or compatible test framework macros"],"input_types":["Test function name and location in code"],"output_types":["Test result (pass/fail/skip)","Execution time and error messages","Test explorer UI with hierarchical test structure"],"categories":["automation-workflow","code-generation-editing"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"rust-analyzer__headline","uri":"capability://code.generation.editing.rust.language.server.extension.for.visual.studio.code","name":"rust language server extension for visual studio code","description":"Rust-analyzer is an official Rust language server extension for Visual Studio Code that enhances Rust development with features like code completion, go-to-definition, and inline error diagnostics, making it essential for efficient coding in Rust.","intents":["best Rust language server","Rust IDE features for Visual Studio Code","Rust code completion tools","Rust development extensions for VS Code","top tools for Rust programming"],"best_for":["Rust developers","VS Code users"],"limitations":[],"requires":["Visual Studio Code"],"input_types":["Rust code"],"output_types":["code suggestions","error diagnostics"],"categories":["code-generation-editing"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":59,"verified":false,"data_access_risk":"high","permissions":["VSCode 1.50+","Rust toolchain installed via rustup","Cargo.toml in workspace root","rust-analyzer extension enabled","Inlay hints feature enabled in VSCode settings (rust-analyzer.inlayHints.enable)","Valid Cargo.toml in workspace","Inlay hints enabled for lifetimes (rust-analyzer.inlayHints.lifetimeElisionHints)","VSCode 1.50 or later","Rust toolchain","Valid Cargo project with tests"],"failure_modes":["Completion ranking depends on workspace indexing completeness — large monorepos may experience delayed suggestions until initial analysis completes","Does not provide ML-based relevance ranking; 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