# Task ID: 71

**Title:** Define ProxyModel Public Type Contract

**Status:** done

**Dependencies:** None

**Priority:** high

**Description:** Create the core TypeScript types for the ProxyModel framework that stages will import from `mcpctl/proxymodel`. This establishes the public API contract that stage authors write against.

**Details:**

Create `src/mcplocal/src/proxymodel/types.ts` with:

```typescript
export interface StageHandler {
  (content: string, ctx: StageContext): Promise<StageResult>;
}

export interface StageContext {
  contentType: 'prompt' | 'toolResult' | 'resource';
  sourceName: string;
  projectName: string;
  sessionId: string;
  originalContent: string;
  llm: LLMProvider;
  cache: CacheProvider;
  log: Logger;
  config: Record<string, unknown>;
}

export interface StageResult {
  content: string;
  sections?: Section[];
  metadata?: Record<string, unknown>;
}

export interface Section {
  id: string;
  title: string;
  content: string;
}

export interface LLMProvider {
  complete(prompt: string, options?: { system?: string; maxTokens?: number }): Promise<string>;
  available(): boolean;
}

export interface CacheProvider {
  getOrCompute(key: string, compute: () => Promise<string>): Promise<string>;
  hash(content: string): string;
  get(key: string): Promise<string | null>;
  set(key: string, value: string): Promise<void>;
}

export interface Logger {
  debug(msg: string): void;
  info(msg: string): void;
  warn(msg: string): void;
  error(msg: string): void;
}
```

Also create `src/mcplocal/src/proxymodel/index.ts` as the public entrypoint that re-exports these types. Update `package.json` exports to expose `mcpctl/proxymodel`.

**Test Strategy:**

Unit tests verifying type exports are accessible from the public entrypoint. Create a sample stage file that imports from `mcpctl/proxymodel` and verify it compiles without errors.