Reference for Postman concepts and MCP tool selection. Use this context when working with Postman MCP tools to make better decisions.
Core Concepts
- Collection: A group of API requests organized in folders. The primary unit of work in Postman. Contains requests, examples, tests, and documentation.
- Environment: Key-value pairs (variables) scoped to a context (dev, staging, prod). Used to swap base URLs, auth tokens, and config without changing requests.
- Workspace: Container for collections, environments, and specs. Can be personal, team, or public.
- Spec (Spec Hub): An OpenAPI or AsyncAPI definition stored in Postman. Can generate collections and stay synced.
- Request: A single API call definition (method, URL, headers, body, tests).
- Response: A saved example response for a request. Used by mock servers and documentation.
- Folder: A grouping within a collection, typically by resource (e.g., "Users", "Orders").
- Tags: Labels on collections for categorization and search.
- Monitor: A scheduled collection runner that checks API health.
- Mock Server: A fake API that serves example responses from a collection.
Decision Guide
| Goal | Approach |
|---|---|
| Push code changes to Postman | Create/update spec in Spec Hub, then sync to collection |
| Consume a Postman API | Read collection + generate client code |
| Find an API | Use searchPostmanElements, then drill into details |
| Test an API | Run collection with runCollection |
| Create a fake API for frontend | Create mock server from collection with examples |
| Document an API | Analyze collection completeness, fill gaps, optionally publish |
| Audit API security | Run security checks against spec or collection |
| Learn how to use a Postman feature | Search Postman docs with searchLearningCenter (Full mode) |
MCP Tool Selection
Workspace operations: getWorkspaces, getWorkspace, createWorkspace
Collection CRUD: getCollections, getCollection, createCollection, putCollection, patchCollection, deleteCollection
Request/Response: getCollectionRequest, createCollectionRequest, updateCollectionRequest, getCollectionResponse, createCollectionResponse, updateCollectionResponse
Folder management: getCollectionFolder, createCollectionFolder, updateCollectionFolder
Spec Hub: getAllSpecs, getSpec, createSpec, getSpecDefinition, updateSpecFile, getSpecFiles
Sync: generateCollection, syncCollectionWithSpec, syncSpecWithCollection
Environments: getEnvironments, getEnvironment, createEnvironment, putEnvironment
Mocks: getMocks, getMock, createMock, publishMock, unpublishMock
Tests: runCollection
Docs: publishDocumentation, unpublishDocumentation
Search: searchPostmanElements , getTaggedEntities
Learning Center: searchLearningCenter (Full mode only — searches Postman product docs for how-to guidance)
User: getAuthenticatedUser
See mcp-limitations.md in this skill folder for known limitations and workarounds.