Zero Skills

go-zero Skills for AI Agents

This skill provides comprehensive go-zero microservices framework knowledge, optimized for AI agents helping developers build production-ready services. It covers REST APIs, RPC services, database operations, resilience patterns, high-performance data structures, and troubleshooting.

🎯 When to Use This Skill

Invoke this skill when working with go-zero:

• Creating services: REST APIs, gRPC services, or microservices architectures
• Database integration: SQL, MongoDB, Redis, or connection pooling
• Data structures: LRU Cache, Ring Buffer, TimingWheel, or concurrent maps
• Production hardening: Circuit breakers, rate limiting, or error handling
• Debugging: Understanding errors, fixing configuration, or resolving issues
• Learning: Understanding go-zero patterns and best practices

📚 Knowledge Structure

This skill organizes go-zero knowledge into focused modules. Load specific guides as needed rather than reading everything at once:

Quick Start Guide

Link: Official go-zero Documentation Contains: Installation, first API service, basic commands, hello-world examples (refer to official docs)

Pattern Guides (Detailed Reference)

1. REST API Patterns

File: references/rest-api-patterns.md When to load: Creating HTTP endpoints, implementing CRUD operations, adding middleware Contains:

• Handler → Logic → Context three-layer architecture
• Request/response handling with proper types
• Middleware (auth, logging, metrics, CORS)
• Error handling with httpx.Error() and httpx.OkJson()
• Complete CRUD examples with ✅ correct vs ❌ incorrect patterns

2. RPC Service Patterns

File: references/rpc-patterns.md When to load: Building gRPC services, service-to-service communication Contains:

• Protocol Buffers definition and code generation
• Service discovery with etcd/consul/kubernetes
• Load balancing strategies
• Client configuration and interceptors
• Error handling in RPC contexts

3. Database Patterns

File: references/database-patterns.md When to load: Implementing data persistence, caching, or complex queries Contains:

• SQL operations with sqlx (CRUD, transactions, batch inserts)
• MongoDB integration patterns
• Redis caching strategies and cache-aside pattern
• Model generation with goctl model
• Connection pooling and performance tuning

4. Resilience Patterns

File: references/resilience-patterns.md When to load: Production hardening, handling failures, managing system load Contains:

• Circuit breaker configuration (Breaker)
• Rate limiting and API throttling
• Load shedding under pressure
• Timeout and retry strategies
• Graceful shutdown and degradation

5. Collection Patterns

File: references/collection-patterns.md When to load: Using high-performance data structures, local caching, timeout management Contains:

• LRU Cache for local hot data caching (O(1) operations)
• Ring Buffer for fixed-size circular buffers
• TimingWheel for efficient timer management (O(1) add/remove/execute)
• SafeMap for concurrent-safe map operations
• Memory management best practices and pitfalls

6. goctl Command Reference

File: references/goctl-commands.md When to load: Generating code with goctl, setting up new services, post-generation steps Contains:

• goctl installation and detection
• API/RPC/Model generation commands with exact flags
• Post-generation pipeline (mod tidy, import fixing, build verification)
• Config templates (API, RPC, production)
• Deployment templates (Dockerfile, Kubernetes, Docker Compose)
• Middleware and error handler templates
• API spec patterns (CRUD, JWT, mixed auth)

7. Swagger / OpenAPI Documentation

File: references/swagger-patterns.md When to load: Generating Swagger/OpenAPI docs from .api files, adding API documentation annotations Contains:

• Built-in goctl api swagger command reference (goctl ≥ 1.8.4, no plugin needed)
• info block metadata: title, description, host, basePath, schemes, useDefinitions, wrapCodeMsg
• @server tags for Swagger UI grouping
• @doc for endpoint summary/description
• Field tags: example, options (enum), range, default, optional
• Security definitions (securityDefinitionsFromJson + authType)
• Business error codes (bizCodeEnumDescription)
• Complete multi-file .api structure example with best practices

8. Distributed Transaction Patterns

File: references/distributed-transactions.md When to load: Cross-service data consistency, DTM integration, SAGA/TCC patterns Contains:

• Pattern-selection guidance for Workflow, Saga, TCC, XA, two-phase message, and outbox
• Verified DTM HTTP Saga skeleton
• Barrier, idempotency, compensation, security, and failure-testing checklists

9. Observability Patterns

File: references/observability.md When to load: Production monitoring, tracing, alerting setup Contains:

• Prometheus metrics configuration
• Custom metrics implementation
• Distributed tracing with OpenTelemetry/Jaeger
• Structured logging with logx
• Grafana dashboards and alerting rules
• ELK integration for log aggregation

10. Message Queue Patterns

File: references/message-queue.md When to load: Async processing, delayed tasks, event streaming Contains:

• go-queue dq (Beanstalkd) for delayed tasks
• go-queue kq (Kafka) for high-throughput messaging
• Current producer and consumer APIs
• Lifecycle, retry, idempotency, and shutdown guidance

11. Advanced Components

File: references/advanced-components.md When to load: Performance optimization, concurrent processing, caching Contains:

• Bloom filter for cache penetration prevention
• TimingWheel for delayed task scheduling
• MapReduce for parallel processing
• Executors for batch task buffering
• SharedCalls (SingleFlight) for duplicate prevention

Supporting Resources

Best Practices

File: best-practices/overview.md When to load: Production deployment, code review, optimization Contains: Configuration management, logging, monitoring, security, performance

Troubleshooting

File: troubleshooting/common-issues.md When to load: Debugging errors, configuration issues, runtime problems Contains: Common error messages, solutions, configuration pitfalls, debugging tips

Claude Code Integration

File: getting-started/claude-code-guide.md When to load: Setting up Claude Code for zero-skills usage Contains: Installation, invocation methods, advanced features (subagents, dynamic context)

Design Principles

File: design/principles.md When to load: Understanding framework philosophy, architecture decisions Contains: Three-layer architecture rationale, design decisions, performance considerations, anti-patterns

Case Study: go-zero-looklook

File: examples/case-studies/looklook-overview.md When to load: Learning from production-scale example, real-world architecture Contains: Source-grounded repository map, study workflow, reusable patterns, and verification checklist

Tool Integration Guides

File: getting-started/README.md When to load: Setting up zero-skills with Cursor, GitHub Copilot, Windsurf, or Codex Contains: Feature comparison table, per-tool setup instructions (Claude Code, Cursor, Copilot, Windsurf, Codex)

🚀 Common Workflows

These workflows guide you through typical go-zero development tasks:

Creating a New REST API Service

Steps:

1. Define API specification in .api file with types and routes
2. Generate code: goctl api go -api user.api -dir .
3. Implement business logic in internal/logic/ layer
4. Add validation and error handling with httpx
5. Test endpoints with proper request/response handling

Detailed guide: references/rest-api-patterns.md

Implementing Database Operations

Steps:

1. Design database schema and create tables
2. Generate model: goctl model mysql datasource -url="..." -table="users" -dir="./model"
3. Inject model into ServiceContext in internal/svc/service_context.go
4. Use sqlx methods in logic layer (Insert, FindOne, Update, Delete)
5. Handle transactions and errors properly with ctx propagation

Detailed guide: references/database-patterns.md

Adding Middleware

Steps:

1. Create middleware function in internal/middleware/ directory
2. Define middleware in .api file or register programmatically
3. Implement authentication/authorization logic
4. Pass validated data through r.Context()
5. Handle errors with appropriate HTTP status codes

Detailed guide: references/rest-api-patterns.md

Building an RPC Service

Steps:

1. Define service in .proto file with messages and RPCs
2. Generate code: goctl rpc protoc user.proto --go_out=. --go-grpc_out=. --zrpc_out=.
3. Implement service logic in internal/logic/
4. Configure service discovery (etcd/consul/kubernetes)
5. Test with RPC client and handle errors

Detailed guide: references/rpc-patterns.md

Generating Swagger Documentation

Steps:

1. Add info block with swagger metadata (title, host, basePath, schemes) to entry .api file
2. Add tags in @server blocks for Swagger UI grouping
3. Add @doc summary to each endpoint
4. Add example/options/range tags to request/response fields
5. Run goctl api swagger --api entry.api --dir docs/swagger --filename api

Detailed guide: references/swagger-patterns.md

Using High-Performance Data Structures

Steps:

1. Choose appropriate data structure based on use case:
   • LRU Cache for local hot data caching
   • Ring Buffer for fixed-size log/message buffers
   • TimingWheel for timeout/delayed task management
   • SafeMap for concurrent-safe key-value storage
2. Import from github.com/zeromicro/go-zero/core/collection
3. Configure capacity/parameters based on memory constraints
4. Handle eviction callbacks for resource cleanup (LRU Cache)
5. Monitor memory usage and rebuild when necessary (SafeMap)

Detailed guide: references/collection-patterns.md

⚡ Key Principles

When generating or reviewing go-zero code, always apply these principles:

✅ Always Follow

• Three-layer separation: Keep Handler (routing) → Logic (business) → Model (data) distinct
• Structured errors: Use httpx.Error(w, err) for HTTP errors, not fmt.Errorf
• Configuration: Load with conf.MustLoad(&c, *configFile) and inject via ServiceContext
• Context propagation: Pass ctx context.Context through all layers for tracing and cancellation
• Type safety: Define request/response types in .api files, generate with goctl
• goctl generation: Always use goctl to generate boilerplate, never hand-write handlers/routes

❌ Never Do

• Put business logic directly in handlers (violates three-layer architecture)
• Return raw errors with w.Write() or fmt.Fprintf() instead of using httpx helpers
• Hard-code configuration values (ports, hosts, database credentials)
• Skip validation of user inputs or forget to check err != nil
• Modify generated code (customize via logic layer instead)
• Bypass ServiceContext injection (leads to tight coupling and testing issues)

📖 Progressive Learning Path

Follow this path based on your needs:

🟢 New to go-zero?

1. Start here: Official go-zero Quick Start Install go-zero, create your first API, understand basic concepts

2. Add a database: references/database-patterns.md Connect to MySQL/PostgreSQL, generate models, implement CRUD

🟡 Building production services?

1. Review best practices: best-practices/overview.md Configuration, logging, monitoring, security checklist

2. Add resilience: references/resilience-patterns.md Circuit breakers, rate limiting, graceful degradation

3. Optimize data structures: references/collection-patterns.md LRU Cache, Ring Buffer, TimingWheel for performance

4. Check common pitfalls: troubleshooting/common-issues.md Avoid typical mistakes and know how to debug issues

5. Set up observability: references/observability.md Prometheus metrics, distributed tracing, structured logging

🔴 Advanced scenarios?

1. Distributed transactions: references/distributed-transactions.md DTM integration, SAGA/TCC patterns, data consistency

2. Message queues: references/message-queue.md go-queue for async processing, delayed tasks, Kafka integration

3. Performance optimization: references/advanced-components.md Bloom filter, MapReduce, TimingWheel, SharedCalls

4. Understand design: design/principles.md Framework philosophy, architecture decisions, anti-patterns

5. Learn from examples: examples/case-studies/looklook-overview.md Production-scale architecture, real-world patterns

🔵 Extending capabilities?

1. Use with Claude Code: getting-started/claude-code-guide.md Learn advanced features like subagents, dynamic context, and argument passing Run demo projects to validate your environment

2. Verify knowledge: examples/verify-tutorial.sh Script to check if examples work correctly

🔗 Integration with go-zero AI Ecosystem

This skill is part of a two-layer ecosystem for AI-assisted go-zero development:

The AI runs goctl directly in the terminal for code generation — no separate MCP server needed. See references/goctl-commands.md for the complete command reference.

Usage in Claude Code:

• This skill loads automatically when working with go-zero projects
• Use /zero-skills to invoke manually for go-zero guidance
• AI runs goctl commands directly in the terminal for code generation
• Reference specific pattern files when needed (Claude loads them on demand)

See getting-started/claude-code-guide.md for detailed usage instructions.

🌐 Additional Resources

• Official docs: go-zero.dev - Latest API reference and guides
• GitHub: zeromicro/go-zero - Source code and examples
• Community: Discussions, issues, and contributions welcome in the main repository

📝 Version Compatibility

• Stable target: go-zero v1.10.3 (Go 1.24 or later required)
• Master compatibility: Use Go 1.25 or later when testing against the go-zero master branch
• Updates: Patterns updated regularly to reflect framework evolution
• Breaking changes: Check official docs for API changes between versions

Quick invocation: Use /zero-skills or ask "How do I [task] with go-zero?" Need help? Reference the specific pattern guide for detailed examples and explanations.