Protobuf grpc designer

Skill a5c-ai/babysitter/library/specializations/sdk-platform-development/skills/protobuf-grpc-designer

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Install

npx -y skills add a5c-ai/babysitter --skill protobuf-grpc-designer

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Protocol Buffers and gRPC service definition with backward compatibility checks

SKILL.md

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Protocol Buffers and gRPC Designer Skill

Overview

This skill specializes in designing Protocol Buffers schemas and gRPC service definitions with a focus on backward compatibility, performance, and cross-language interoperability.

Capabilities

Design .proto files following Google's style guide and best practices
Implement gRPC service definitions with streaming support
Validate wire format backward compatibility
Generate language-specific stubs for multiple targets
Configure proto linting and breaking change detection
Design efficient message structures for performance
Implement gRPC interceptors and middleware patterns

Target Processes

API Design Specification
Backward Compatibility Management
Multi-Language SDK Strategy

Integration Points

buf (schema registry, linting, breaking change detection)
protoc (Protocol Buffer compiler)
grpcurl (gRPC testing)
gRPC-Gateway (REST transcoding)
Connect (modern gRPC alternative)

Input Requirements

Service domain requirements
Message structure definitions
Streaming requirements (unary, server, client, bidirectional)
Target languages for code generation
Backward compatibility policy

Output Artifacts

.proto schema files
buf.yaml configuration
Generated language stubs
Breaking change analysis report
API documentation from proto comments

Usage Example

skill:
  name: protobuf-grpc-designer
  context:
    protoDirectory: ./proto
    targetLanguages:
      - go
      - python
      - typescript
    enableBufLint: true
    checkBreakingChanges: true
    streamingRequired: true

Best Practices

Use package names that reflect domain boundaries
Reserve field numbers when removing fields
Use well-known types (Timestamp, Duration, etc.)
Document all messages and fields with comments
Version services through package names
Implement proper error handling with Status codes