mirror of
https://github.com/Postman-Devrel/postman-claude-code-plugin.git
synced 2026-04-16 10:29:58 +00:00
94 lines
3.8 KiB
Markdown
94 lines
3.8 KiB
Markdown
---
|
|
description: Generate typed client code from Postman collections. Reads your private APIs and writes production-ready code.
|
|
allowed-tools: Bash, Read, Write, Glob, Grep, mcp__postman__*
|
|
---
|
|
|
|
# Generate Client Code
|
|
|
|
Generate typed client code from Postman collections. Reads your private API definitions and writes production-ready code that matches your project's conventions.
|
|
|
|
## Prerequisites
|
|
|
|
The Postman MCP Server must be connected. If MCP tools aren't available, tell the user: "Run `/postman:setup` to configure the Postman MCP Server."
|
|
|
|
## Workflow
|
|
|
|
### Step 1: Find the API
|
|
|
|
1. Call `searchPostmanElementsInPrivateNetwork` with the API name to find it in the organization's private network.
|
|
2. If no results, call `getWorkspaces` to get the user's workspace ID. If multiple workspaces exist, ask which to use. Then use `getCollections` with the `workspace` parameter and `name` filter if the user specified an API name.
|
|
3. If still no results, fall back to `searchPostmanElementsInPublicNetwork` to search the public Postman network.
|
|
4. If multiple matches, list them and ask which one.
|
|
5. Call `getCollection` to get the full collection.
|
|
6. Call `getSpecDefinition` if a linked spec exists (richer type info).
|
|
|
|
### Step 2: Understand the API Shape
|
|
|
|
For the target collection:
|
|
1. Call `getCollectionFolder` for each folder to understand resource grouping
|
|
2. Call `getCollectionRequest` for each relevant endpoint to get:
|
|
- HTTP method and URL
|
|
- Request headers and auth
|
|
- Request body schema
|
|
- Path and query parameters
|
|
3. Call `getCollectionResponse` for each request to get:
|
|
- Response status codes
|
|
- Response body shapes (for typing)
|
|
- Error response formats
|
|
4. Call `getEnvironment` to understand base URLs and variables
|
|
5. Call `getCodeGenerationInstructions` for any Postman-specific codegen guidance
|
|
|
|
### Step 3: Detect Project Language
|
|
|
|
If the user doesn't specify a language, detect from the project:
|
|
- `package.json` or `tsconfig.json` → TypeScript/JavaScript
|
|
- `requirements.txt` or `pyproject.toml` → Python
|
|
- `go.mod` → Go
|
|
- `Cargo.toml` → Rust
|
|
- `pom.xml` or `build.gradle` → Java
|
|
- `Gemfile` → Ruby
|
|
|
|
### Step 4: Generate Code
|
|
|
|
Generate a typed client class or module with:
|
|
- Method per endpoint with proper parameters
|
|
- Request/response types from collection schemas
|
|
- Authentication handling (from collection auth config)
|
|
- Error handling based on documented error responses
|
|
- Environment-based configuration (base URL from env vars)
|
|
- Pagination support if the API uses it
|
|
|
|
**Code conventions:**
|
|
- Match the project's existing style (imports, formatting, naming)
|
|
- Include JSDoc/docstrings from collection descriptions
|
|
- Use the project's HTTP library if one exists (axios, fetch, requests, etc.)
|
|
- Write to a sensible file path (e.g., `src/clients/<api-name>.ts`)
|
|
|
|
### Step 5: Present
|
|
|
|
```
|
|
Generated: src/clients/users-api.ts
|
|
|
|
Endpoints covered:
|
|
GET /users → getUsers(filters)
|
|
GET /users/{id} → getUser(id)
|
|
POST /users → createUser(data)
|
|
PUT /users/{id} → updateUser(id, data)
|
|
DELETE /users/{id} → deleteUser(id)
|
|
|
|
Types generated:
|
|
User, CreateUserRequest, UpdateUserRequest,
|
|
UserListResponse, ApiError
|
|
|
|
Auth: Bearer token (from USERS_API_TOKEN env var)
|
|
Base URL: from USERS_API_BASE_URL env var
|
|
```
|
|
|
|
## Error Handling
|
|
|
|
- **MCP not configured:** "Run `/postman:setup` to configure the Postman MCP Server."
|
|
- **Collection not found:** "No collection matching that name. Run `/postman:search` to find available APIs."
|
|
- **401 Unauthorized:** "Your Postman API key was rejected. Generate a new one at https://postman.postman.co/settings/me/api-keys and run `/postman:setup`."
|
|
- **Empty collection:** "This collection has no requests. Add endpoints in Postman or use `/postman:sync` to push a spec."
|
|
- **Language not detected:** Ask the user what language to generate.
|