Backend & APIs Subagents
542 backend & apis subagents for Claude Code and AI agents, ranked by real installs from npm, PyPI and skills.sh.
#Type
- 1senior-software-engineerPragmatic IC who plans sanely, ships small reversible slices with tests, and writes clear PRs.Jul 2026
- 2architectStrategic Architecture & Debugging Advisor (Opus, READ-ONLY)Jul 2026
- 3serverBackend agent for the Activepieces server API (packages/server/api). Specializes in Fastify endpoints, database operations, job queues, and backend architecture.Jul 2026
- 4engine-programmerThe Engine Programmer works on core engine systems: rendering pipeline, physics, memory management, resource loading, scene management, and core framework code. Use this agent for engine-level…May 2026
- 5gameplay-programmerThe Gameplay Programmer implements game mechanics, player systems, combat, and interactive features as code. Use this agent for implementing designed mechanics, writing gameplay system code, or…May 2026
- 6godot-csharp-specialistThe Godot C# specialist owns all C# code quality in Godot 4 projects: .NET patterns, attribute-based exports, signal delegates, async patterns, type-safe node access, and C#-specific Godot idioms.May 2026
- 7godot-gdextension-specialistThe GDExtension specialist owns all native code integration with Godot: GDExtension API, C/C++/Rust bindings (godot-cpp, godot-rust), native performance optimization, custom node types, and the…May 2026
- 8godot-specialistThe Godot Engine Specialist is the authority on all Godot-specific patterns, APIs, and optimization techniques. They guide GDScript vs C# vs GDExtension decisions, ensure proper use of Godot's…May 2026
- 9network-programmerThe Network Programmer implements multiplayer networking: state replication, lag compensation, matchmaking, and network protocol design. Use this agent for netcode implementation, synchronization…May 2026
- 10ue-gas-specialistThe Gameplay Ability System specialist owns all GAS implementation: abilities, gameplay effects, attribute sets, gameplay tags, ability tasks, and GAS prediction. They ensure consistent GAS…May 2026
- 11ue-replication-specialistThe UE Replication specialist owns all Unreal networking: property replication, RPCs, client prediction, relevancy, net serialization, and bandwidth optimization. They ensure server-authoritative…May 2026
- 12unity-dots-specialistThe DOTS/ECS specialist owns all Unity Data-Oriented Technology Stack implementation: Entity Component System architecture, Jobs system, Burst compiler optimization, hybrid renderer, and DOTS-based…May 2026
- 13software-engineerImplements one workshop ticket from `implement_yourself/tasks/NNN-slug.groomed.md`. Reads the groomed spec, populates the skeleton under `implement_yourself/src/`, runs `make` QA + the ticket's e2e…Jul 2026
- 14backend-devMemOS backend / library implementation sub-agent. Writes code under src/memos/ within the task boundary, strictly TDD, then self-checks against the backend checklist and posts real test output.Jul 2026
- 15implementerImplementation specialist — writes production code and tests following MockServer conventions. Spawn this agent to implement features from a spec or plan. It reads existing patterns, writes code,…Jul 2026
- 16backend-architectBackend architect for scalable API design, microservices, and distributed systemsJul 2026
- 17architectFeature planning, design documentation, AND integration planningJan 2026
- 18code-assistUse this agent when implementing code tasks from task files, working through structured implementation plans, or executing code changes that follow the spec-to-implementation workflow.Jul 2026
- 19aiox-architectAIOX Architect autônomo. Análise de impacto, design de arquitetura, validação de PRD, research. Usa task files reais do AIOX.Jul 2026
- 20aiox-devAIOX Developer autônomo. Implementa stories usando task files reais com self-critique checkpoints, DoD checklist, e IDS protocol. Default: YOLO mode (autônomo, sem interação humana).Jul 2026
- 21implementerMakes tests pass. Focus only on implementation, no extras.Jul 2026
- 22tech-lead-architectUse this agent for technical architecture design, technology stack decisions, and system design specifications — engage after UX/design requirements are established but before detailed implementation…Jul 2026
- 23backend-architectBackend system architecture and API design specialist. Use PROACTIVELY for greenfield service design, monolith decomposition, API paradigm selection (REST/gRPC/GraphQL), microservice boundaries,…Jul 2026
- 24fullstack-developerUse this agent when you need to build complete features spanning database, API, and frontend layers together as a cohesive unit.Jul 2026
- 25golang-code-writerWrite, generate, or create new Go code — functions, structs, interfaces, methods, or complete packagesJul 2026
- 26architect用于系统设计、可扩展性及技术决策的软件架构专家。在规划新功能、重构大型系统或做出架构决策时请主动（PROACTIVELY）使用。Mar 2026
- 27gstreamerGStreamer and media pipeline specialist for VIOS. Use for questions about pipeline construction, element selection, caps negotiation, buffer handling, GStreamer best practices, debugging pipeline…Jul 2026
- 28vios-apiVIOS REST API agent. Queries a running VIOS/VST backend over HTTP to list sensors, fetch recording timelines, download clips, capture snapshots, add/delete sensors and RTSP streams, and upload video…Jul 2026
- 29feature-implementerDeprecated placeholder. Do not use; follow root AGENTS.md and package instructions instead.Jul 2026
- 30dependency-analyzerAnalyzes project dependencies, identifies conflicts, and manages dependency updates for optimal project health.Mar 2026
- 31backend-completion-specialistUse this agent when you need a comprehensive backend task completed from start to finish in a Python codebase. This includes implementation, testing, validation, and proper integration.Dec 2025
- 32akka-net-specialistExpert in Akka.NET architecture, actor systems, and distributed computing patterns. Specializes in analyzing actor lifecycle issues, message passing problems, cluster coordination, persistence, and…Jul 2026
- 33dotnet-benchmark-designerExpert in designing effective .NET performance benchmarks and instrumentation. Specializes in BenchmarkDotNet patterns, custom benchmark design, profiling setup, and choosing the right measurement…Jul 2026
- 34dotnet-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…Jul 2026
- 35dotnet-performance-analystExpert in analyzing .NET application performance data, profiling results, and benchmark comparisons. Specializes in JetBrains profiler analysis, BenchmarkDotNet result interpretation, baseline…Jul 2026
- 36roslyn-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.Jul 2026
- 37api-explorerExplore and analyze API-related code. Use when investigating endpoints, routing, or HTTP handling.Jul 2026
- 38route-scannerPipeline Stage 1 - Scan Express routes and produce a route manifest.Jul 2026
- 39agent-architectPrincipal Software Architect specializing in system design, database modeling, API engineering, and system resilience.Jul 2026
- 40ghidra-api-expertUse this agent when you need expert guidance on Ghidra API usage, plugin/extension development, or troubleshooting integration issues.Jul 2026
- 41architectC4 다이어그램·ADR·Fitness Functions·기술 부채 스캔·의존성 분석·모듈 경계 설계 전문. Fowler, Brown C4, Newman, Vernon DDD 10구루 적용. Use proactively when 아키텍처 분석, C4 모델, ADR 작성, 기술 부채 스캔, 순환 의존성, 마이크로서비스 설계, 진화적 아키텍처 요청 시. 구현…Jul 2026
- 42graphql-auditGraphQL API security specialist. Use for introspection analysis, query complexity attacks, injection testing, authorization bypass, and batching abuse on GraphQL endpoints.Jun 2026
- 43python-expertWrite idiomatic Python code with advanced features like decorators, generators, and async/await. Specializes in FastMCP 2.x async servers, real API integrations, plain text formatting for LLM…Jul 2026
- 44api-designerREST and GraphQL API design - endpoint design, request/response schemas, versioning, and documentation. Use for designing new APIs or evolving existing ones.Jul 2026
- 45backendGeneral backend development - server-side logic, business logic, integrations, and system architecture. Use for implementing APIs, services, middleware, and backend features.Jul 2026
- 46integratorUse for third-party integrations, API connections, webhooks, OAuth flows, and external service integration.Jul 2026
- 47backend-implementationImplement backend integration changes with strict package scope and existing contracts.Jul 2026
- 48architectSoftware architecture specialist for system design, scalability, and technical decision-making. Use PROACTIVELY when planning new features, refactoring large systems, or making architectural…Jan 2026
- 49solverDerives multiple solutions for verified causes and analyzes tradeoffs. Use when root cause verification has concluded, or when "solution/how to fix/fix method/remedy" is mentioned. Focuses on…Jul 2026
- 50task-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…Jul 2026
- 51technical-designerCreates ADR and Design Docs to evaluate technical choices and implementation approaches. Use when PRD is complete and technical design is needed, or when "ADR/design doc/technical…Jul 2026
- 52query-agentCreates encapsulated, reusable query objects for complex database queries with composable scopes. Use when building reports, dashboards, aggregations, or when user mentions query objects, complex…Jun 2026
- 53service-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…Jun 2026
- 54senior-engineerUse this agent when you need to implement features, fix bugs, write tests, or handle complex engineering tasks that require deep technical expertise and production-grade code quality.Mar 2026
- 55trigger-dev-task-writerUse this agent when you need to design, implement, or optimize background jobs and workflows using Trigger.dev framework. This includes creating reliable async tasks, implementing AI workflows,…Jul 2026
- 56ts-coderUse this agent when you need to write or refactor TypeScript code following strict type safety and simplicity principles. This includes creating type definitions, implementing business logic,…Jul 2026
- 57rust-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.…Jul 2026
- 58implementerHarnessFlow worker subagent — spawn only from a HarnessFlow workflow step, never by autonomous delegation. Implements code changes based on a finalized plan — reads associated files, writes code, and…Jul 2026
- 59cto-vogels公司 CTO（Werner Vogels 思维模型）。当需要技术架构设计、技术选型决策、系统性能和可靠性评估、技术债务评估时使用。Mar 2026
- 60godot-csharp-engineerUse this agent for C#-first Godot 4.x development — writing idiomatic C# (not GDScript translations), managing GC pressure and Variant marshalling, designing [Signal] delegates correctly, handling…Jul 2026
- 61godot-game-architectUse this agent when the user needs help with Godot 4.x game development architecture, GDScript or C# system design, scene tree planning, state machines, signal patterns, or designing new features.Jul 2026
- 62godot-game-devUse this agent when the user needs help implementing Godot Engine features, including GDScript or C# coding, scene/node setup, player controllers, enemy AI, inventory systems, dialogue, save/load,…Jul 2026
- 63workflow-executorImplements single tasks atomically with verification and commit disciplineJul 2026
- 64software-engineerImplements one workshop ticket from `implement_yourself/tasks/NNN-slug.groomed.md`. Reads the groomed spec, populates the skeleton under `implement_yourself/src/`, runs `make` QA + the ticket's e2e…Jun 2026
- 65prs-expertPromptScript language expert. Helps with syntax, compilation issues, and migrations.Jul 2026
- 66api_designerAPI design specialist for endpoint design, request/response contracts, and API versioning strategies. Use when the task involves designing REST or GraphQL APIs, defining endpoint schemas, planning…Jul 2026
- 67cobol_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…Jul 2026
- 68coderImplementation specialist for writing clean, well-structured code following established patterns and SOLID principles. Use when the task requires feature implementation, writing new modules, or…Jul 2026
- 69hlasm_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:…Jul 2026
- 70ibm_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,…Jul 2026
- 71integration_engineerIntegration engineering specialist for B2B/API integration, ETL between systems, message brokers, and EDI/flat-file exchanges. Use when the task requires connecting two systems with different data…Jul 2026
- 72solutions_architectSolutions architecture specialist for enterprise integration patterns, vendor systems, cross-team architecture, and target-state design. Use when the task requires mapping a current-state vs…Jul 2026
- 73zos_sysprogz/OS systems programming specialist for JCL, USS, SMP/E, RACF, subsystem diagnostics, and batch scheduling. Use when the task requires JCL authoring or review, z/OS Unix System Services setup, SMP/E…Jul 2026
- 74server-crate-specialistUse this agent when you need to work on any code within the crates/server directory of the Nexus project. This includes implementing new HTTP endpoints, modifying Axum routing, working with…Mar 2026
- 75api-expertUse this agent for Output.ai API server design, Express middleware configuration, workflow execution endpoints, and API security patterns. Specializes in workflow integration via REST APIs.Jul 2026
- 76nodejs-expertUse this agent for Node.js ES module patterns, TypeScript configuration and build tooling, monorepo NPM package structure, and performance optimization. Specializes in Output.ai package architecture…Jul 2026
- 77temporal-expertUse this agent for Output.ai workflow abstractions, designing activity boundaries, implementing error handling patterns, optimizing worker performance, and testing Temporal workflows with Output.ai…Jul 2026
- 78backend-dev后端 API 开发、数据库和服务器逻辑。例如：实现 REST API、编写数据库迁移、构建认证中间件、搭建服务端框架。**主动调用 when** 任务涉及 REST API、SQL 迁移、JWT/OAuth 认证或后端服务搭建。（关键词：FastAPI、SQLAlchemy、Alembic、JWT、bcrypt、限流、Pydantic、PostgreSQL）Jul 2026
- 79tech-lead条件触发的技术顾问，负责架构设计、技术选型和重大架构风险评审。例如：建立 ADR / Tech Stack 基线、评估技术可行性、引入新技术选型、响应 code-reviewer 升级的架构风险。**主动调用 when** 缺基线 ADR、引入新技术选型或 code-reviewer 升级架构风险。（关键词：ADR、Tech…Jul 2026
- 80evanflow-coderImplementation subagent for one decomposed unit of work in the evanflow-coder-overseer pattern. Uses vertical-slice TDD per evanflow-tdd. Tool-restricted to prevent any git ops or destructive actions…May 2026
- 81evanflow-overseerRead-only review subagent for one coder's output (or for cross-coder integration review) in the evanflow-coder-overseer pattern. Reports findings; never fixes. Tool-restricted to prevent any…May 2026
- 82backend_dev专业后端开发工程师，负责API设计、数据库优化和服务器端逻辑开发Jun 2026
- 83fullstack_dev专业全栈开发工程师，负责前后端一体化开发、API集成和端到端功能实现Jun 2026
- 84coderSonnet L1 implementer. Executes one bounded spec with strict TDD and ponytail-minimal diffs; may sub-delegate mechanical bulk to Haiku L2.Jul 2026
- 85be-developerBackend Developer - API implementation using patterns, RLS enforcementJul 2026
- 86data-provisioning-engData Provisioning Engineer - Data pipelines and ETL processesJul 2026
- 87ctoExpert CTO advisor with 30 years of technology leadership experience. Provides technical architecture, engineering strategy, and technology guidance. Advisory only - does not modify code.Apr 2026
- 88cto-agent**Type**: `cto-agent` **Role**: Plan review and architectural guidance **Spawned By**: Issue Orchestrator **Tools**: Codebase read, rubrics, BEADS CLIJun 2026
- 89engineering-backend-architectPython/FastAPI后端架构师，负责API设计、数据库建模、系统架构搭建、性能优化、可扩展性设计，交付稳健可维护的后端服务Jul 2026
- 90engineering-software-architect系统架构设计师，负责整体架构规划、ADR决策记录、技术选型与trade-off分析、模块职责划分、系统边界定义，确保架构支撑业务增长且保持技术债务可控Jul 2026
- 91code-architectDesigns feature architectures by analyzing existing codebase patterns and conventions, then providing comprehensive implementation blueprints with specific files to create/modify, component designs,…Jun 2026
- 92architectSoftware architecture specialist for system design, scalability, and technical decision-making. Use PROACTIVELY when planning new features, refactoring large systems, or making architectural…Jul 2026
- 93cpp-build-resolverC++ build, CMake, and compilation error resolution specialist. Fixes build errors, linker issues, and template errors with minimal changes. Use when C++ builds fail.Jul 2026
- 94go-build-resolverGo build, vet, and compilation error resolution specialist. Fixes build errors, go vet issues, and linter warnings with minimal changes. Use when Go builds fail.Jul 2026
- 95java-build-resolverJava/Maven/Gradle build, compilation, and dependency error resolution specialist. Fixes build errors, Java compiler errors, and Maven/Gradle issues with minimal changes. Use when Java or Spring Boot…Jul 2026
- 96rust-build-resolverRust build, compilation, and dependency error resolution specialist. Fixes cargo build errors, borrow checker issues, and Cargo.toml problems with minimal changes. Use when Rust builds fail.Jul 2026
- 97backendExpert backend developer specializing in Node.js, Express, PostgreSQL, Redis, and API designApr 2026
- 98systems-architectPrincipal systems architect who designs scalable, reliable system architecturesApr 2026
- 99core-backendBackend implementation specialist. Use when the task involves APIs, server-side logic, database operations, authentication, data processing, websockets, or any server-side infrastructure. Focuses on…Jul 2026
- 100backend-typescript-architectSenior backend TypeScript architect specializing in Bun/Node.js runtime, API design, database optimization, and scalable server architecture.Jul 2026
