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Coding Subagents

281 coding subagents for Claude Code and AI agents, ranked by real installs from npm, PyPI and skills.sh.

#Type

1code-explorerDeeply analyzes existing codebase features by tracing execution paths, mapping architecture layers, and documenting dependencies to inform new development.SubagentsJul 2026—232k
2code-simplifierSimplifies and refines code for clarity, consistency, and maintainability while preserving behavior. Focus on recently modified code unless instructed otherwise.SubagentsJul 2026—232k
3cpp-reviewerExpert C++ code reviewer specializing in memory safety, modern C++ idioms, concurrency, and performance. Use for all C++ code changes. MUST BE USED for C++ projects.SubagentsJul 2026—232k
4gan-generatorGAN Harness — Generator agent. Implements features according to the spec, reads evaluator feedback, and iterates until quality threshold is met.SubagentsJul 2026—232k
5cavecrew-builderSurgical 1-2 file edit. Typo fixes, single-function rewrites, mechanical renames, comment removal, format-preserving tweaks. Hard refuses 3+ file scope. Returns caveman diff receipt. Use when scope isSubagentsJul 2026—92k
6cavecrew-investigatorRead-only code locator. Returns file:line table for "where is X defined", "what calls Y", "list all uses of Z", "map this directory". Output is caveman-compressed so the main thread eats ~60% fewer toSubagentsJul 2026—92k
7agentica-agentBuild Python agents using Agentica SDK - spawn agents, implement agentic functions, multi-agent orchestrationSubagentsJan 2026—3.9k
8judgeRefactoring and code transformation reviewSubagentsJan 2026—3.9k
9oracleExternal research - web, docs, APIs with optional LLMSubagentsJan 2026—3.9k
10scoutCodebase exploration and pattern findingSubagentsJan 2026—3.9k
11sparkLightweight fixes and quick tweaksSubagentsJan 2026—3.9k
12frontend-developerFrontend developer for React, Next.js, responsive layouts, and accessible UI componentsSubagentsJul 2026—3.9k
13oss-report-generator-agentGenerate final forensic report from confirmed hypothesis and evidenceSubagentsJul 2026—3.4k
14dotnet-concurrency-specialistExpert in .NET concurrency, threading, and race condition analysis. Specializes in Task/async patterns, thread safety, synchronization primitives, and identifying timing-dependent bugs in multithreadeSubagentsJul 2026—1.1k
15roslyn-incremental-generator-specialistDesign and maintain Roslyn incremental source generators with strict pipeline discipline, parser vs emitter separation, and long-term maintainability for large generator suites.SubagentsJul 2026—1.1k
16api-explorerExplore and analyze API-related code. Use when investigating endpoints, routing, or HTTP handling.SubagentsJul 2026—1.0k
17bug-fixerImplement bug fixes after analysis is complete. Third step in bug fix pipeline.SubagentsJul 2026—1.0k
18code-simplifierSubagentsJul 2026—879
19backendGeneral backend development - server-side logic, business logic, integrations, and system architecture. Use for implementing APIs, services, middleware, and backend features.SubagentsJul 2026—769
20cliUse for CLI tool development, command-line interfaces, terminal utilities, and shell scripting.SubagentsJul 2026—769
21documentorTechnical documentation, API docs, READMEs. Creates clear, comprehensive documentation for codebases.SubagentsJul 2026—769
22explainerCode explanation and architecture walkthroughs. Helps developers understand complex code and systems.SubagentsJul 2026—769
23fixerUse for quick fixes, hotfixes, urgent patches, and time-sensitive bug repairs.SubagentsJul 2026—769
24integratorUse for third-party integrations, API connections, webhooks, OAuth flows, and external service integration.SubagentsJul 2026—769
25migratorUse for data migrations, database schema changes, version upgrades, and data transformation tasks.SubagentsJul 2026—769
26mobileUse for mobile app development, React Native, Flutter, iOS, Android, and cross-platform mobile tasks.SubagentsJul 2026—769
27performancePerformance optimization and profiling. Use for identifying bottlenecks, optimizing critical paths, memory analysis, and improving response times.SubagentsJul 2026—769
28prototyperUse for rapid prototyping, MVPs, proof-of-concepts, and quick experimental implementations.SubagentsJul 2026—769
29refactorerCode refactoring and tech debt reduction. Use for improving code structure, extracting abstractions, reducing duplication, and improving maintainability without changing behavior.SubagentsJul 2026—769
30researcherResearch tasks and codebase exploration. Investigates questions, finds patterns, and gathers information.SubagentsJul 2026—769
31codebase-analyzerAnalyzes existing codebase objectively for facts about implementation, user behavior patterns, and technical architecture. Use when existing code needs to be understood without hypothesis bias. InvokeSubagentsJul 2026—642
32task-executorExecutes implementation completely self-contained following task files. Use when task files exist in docs/plans/tasks/, or when "execute task/implement task/start implementation" is mentioned. Asks noSubagentsJul 2026—642
33task-executor-frontendExecutes React implementation completely self-contained following frontend task files. Use when frontend task files exist, or when "frontend implementation/React implementation/component creation" is SubagentsJul 2026—642
34controller-agentCreates thin, RESTful Rails controllers with strong parameters, proper error handling, and request specs. Use when creating controllers, adding actions, implementing CRUD, or when user mentions routesSubagentsJun 2026—635
35form-agentCreates form objects for complex multi-model forms with validations, type coercion, and nested attributes. Use when building search forms, wizard forms, registration forms, or when user mentions form SubagentsJun 2026—635
36implementation-agentOrchestrates TDD GREEN phase by implementing minimal code that passes failing tests, coordinating specialist subagents. Use when making tests pass, implementing features from failing specs, or when usSubagentsJun 2026—635
37lint-agentAutomatically corrects Ruby and Rails code style using RuboCop, ERB lint, and formatting tools. Use proactively after code changes to ensure style compliance. Use when fixing lint errors, standardizinSubagentsJun 2026—635
38model-agentCreates well-structured ActiveRecord models with validations, associations, scopes, and callbacks. Use when creating models, adding validations, defining associations, or when user mentions ActiveRecoSubagentsJun 2026—635
39presenter-agentCreates presenter objects using SimpleDelegator for clean view formatting and display logic. Use when extracting view logic from models, formatting data, creating badges, or when user mentions presentSubagentsJun 2026—635
40service-agentCreates well-structured Rails service objects following SOLID principles with callable interface and error handling. Use when extracting business logic, creating complex operations, or when user mentiSubagentsJun 2026—635
41stimulus-agentCreates accessible Stimulus controllers following Hotwire patterns with targets, values, and actions. Use when adding client-side behavior, form interactions, toggles, or when user mentions Stimulus, SubagentsJun 2026—635
42tdd-refactoring-agentImproves code structure while keeping all tests green during the TDD REFACTOR phase using proven refactoring patterns. Use proactively after tests pass to clean up implementation code. Use when refactSubagentsJun 2026—635
43turbo-agentImplements Turbo Drive, Turbo Frames, and Turbo Streams for fast, responsive Rails applications with minimal JavaScript. Use when adding partial page updates, live updates, inline editing, or when useSubagentsJun 2026—635
44viewcomponent-agentCreates reusable ViewComponents with slots, previews, and comprehensive tests for Rails UI elements. Use when building cards, tables, badges, modals, or when user mentions ViewComponent, components, oSubagentsJun 2026—635
45analyzerCode analysis agent in Claude formatSubagentsMay 2026—596
46rust-framework-architectUse this agent when working on the AgentSight collector framework architecture, implementing new runners or analyzers, designing event pipelines, or making changes to the streaming analysis system. ExSubagentsJul 2026—534
47cobol_engineerCOBOL engineering specialist for mainframe program development, maintenance, and modernization on z/OS. Use when the task requires writing or reviewing COBOL programs, JCL, copybooks, CICS/IMS transacSubagentsJul 2026—449
48coderImplementation specialist for writing clean, well-structured code following established patterns and SOLID principles. Use when the task requires feature implementation, writing new modules, or buildiSubagentsJul 2026—449
49hlasm_assembler_specialistIBM High-Level Assembler (HLASM) specialist for z/OS. Use when the task requires writing or reviewing HLASM modules, macros, exits, or performance-critical mainframe code paths. For example: authoringSubagentsJul 2026—449
50ibm_i_specialistIBM i (AS/400, iSeries) specialist for RPG, CL, DB2 for i, and OS/400 system operations. Use when the task requires writing or reviewing RPG IV/RPGLE programs, CL scripts, DDS/SQL DDL for DB2 for i, oSubagentsJul 2026—449

More subagents categories

Code review216 Marketing187 Security173 Planning165 Design164 Documentation163 Testing162 Debugging94 DevTools93 Infrastructure73 All Subagents →