# Libtype

> libtype - Shared Protocol Buffer types. Generated from proto/ definitions. Namespaces include common, agent, memory, graph, vector, tool, trace, llm, resource. Use Type.fromObject() for creation. identifier() method generates resource IDs. Use for typed message creation, protobuf data structures, and cross-service type sharing.

- Skill: `majiayu000/libtype` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add majiayu000/libtype`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/libtype/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/libtype

---


# libtype Skill

## When to Use

- Creating typed protobuf messages
- Sharing types across services
- Working with gRPC request/response objects
- Generating resource identifiers

## Key Concepts

**Namespaces**: Types organized by domain (common, agent, memory, graph, etc.).

**fromObject()**: Preferred method to create type instances from plain objects.

**identifier()**: Method on common types to generate resource identifiers.

## Usage Patterns

### Pattern 1: Create typed message

```javascript
import { agent, common } from "@copilot-ld/libtype";

const request = agent.Request.fromObject({
  resourceId: common.ResourceId.fromObject({
    type: "conversation",
    id: "abc123",
  }),
  content: "Hello, assistant!",
});
```

### Pattern 2: Generate identifier

```javascript
import { common } from "@copilot-ld/libtype";

const resourceId = common.ResourceId.fromObject({ type: "message" });
const id = resourceId.identifier(); // "message:uuid"
```

## Integration

Generated by libcodegen from proto/ files. Used by all services and librpc.