application-testing
Skill from postmanlabs/postman-plugin
Install
npx skills add postmanlabs/postman-plugin --skill application-testing
Runs the open skills CLI and installs the skill for your agent (Claude Code, Codex, Cursor …). Alternatively copy the skill folder into .claude/skills/ or upload it in Claude.ai under Settings → Skills.
As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-official
/plugin install postman@postman
This skill is part of the plugin “postman”. In Claude Code the plugin installs it together with the plugin’s other skills, commands and hooks.
What does the application-testing skill do?
Description from the SKILL.md in the source repository.
Questions about application-testing
What does the application-testing skill do?
Sets up, runs, debugs, and interprets results from `postman application test` — the Postman layer that runs your Playwright tests, captures their network traffic, matches it against a collection contract, runs pm.test assertions, and publishes results to Application Inventory. Covers the Postman side of the integration only — not Playwright test authoring or Playwright failures unrelated to capture. Use when the user asks to "set up application testing," "test my application with Postman," "connect my Playwright tests to Postman," "capture network traffic from Playwright," "Playwright tests are running but nothing shows up in Postman," "why isn't application testing capturing anything," "exclude certain requests from capture," "generate a collection from my app's traffic," "set up application testing in CI," "what API coverage do my e2e tests have," "which APIs are my Playwright tests not hitting."
How do I install application-testing?
In a terminal: npx skills add postmanlabs/postman-plugin --skill application-testing. The skills CLI asks which agents to install it for. In Claude.ai you can upload the skill folder as a ZIP under Settings → Skills.
Which agents can use application-testing?
Skills use the open SKILL.md format, which Claude Code, Claude.ai, the Claude API, OpenAI Codex, Cursor, Gemini CLI and other agents support.
Is application-testing safe to use?
Our automatic check found no risky patterns (piped shell scripts, hidden characters, secret access, prompt overrides). It is not a full audit – read the SKILL.md and any scripts before installing.
More skills from postmanlabs/postman-plugin
Use when load-testing or benchmarking an API with concurrent virtual users and latency or error thresholds, or when importing or migrating a JMeter `.jmx` plan or a Gatling simulation (Java/Kotlin/Scala/JS/TS) into a Postman collection plus a `postman performance run` configuration. Reuses a collection to probe a chosen failure mode and distinguishes target limits from load-generator limits. Use for requests such as "load test this API", "import my JMeter plan", or "convert my Gatling project to Postman".
Use when adding API tests, structural or governance lint, or AI-readiness gates to CI, or publishing reviewed API artifacts to a Postman workspace after merge. Makes contract checks repeatable and separates validation from shared workspace changes. Use for requests such as "run this collection on every PR".
Use when writing or debugging local Postman v3 collection, environment or globals files, including collection lint failures. Preserves the per-entity files, inherited context, and schema shapes that make API changes reusable and reviewable in Git. Use for requests such as "fix this request YAML".
Use when creating or repairing dataset manifests, or when a collection needs queried or joined test inputs, a reusable named view, spreadsheet worksheet data, live database rows, or script access through pm.datasets(). Chooses between a simple iteration file and a dataset while preserving query semantics, portability, and credential boundaries. Use for requests such as "run this collection over database rows".
Use when running, deploying, or debugging an existing Postman Flow. Distinguishes local graph execution from a deployed webhook, reuses named input scenarios, and follows a run to the failing block rather than treating an HTTP response as whole-flow success. Use for requests such as "why did this flow fail".
Use when parameterizing requests across environments, choosing variable scopes, chaining values in scripts, or referencing credentials without committing or exposing them. Keeps one reusable collection while separating target configuration from secret values. Use for requests such as "where should I put this API key".
Use when initializing Postman in a repository, binding it to a Postman workspace, interpreting what `postman init` did, or handling CLI-suggested actions for authentication, plan, credits, usage quota, or subscription restrictions. Treats the workspace as the place where a service's API work and its evidence live, kept separate from the services it depends on. Use for requests such as "set up Postman in this repo" or "connect this repo to our workspace".
Capture, forward to localhost, replay, and validate webhook deliveries using a reusable public URL. Keep sender configuration across debugging sessions and record arrivals even while local forwarding is stopped, helping distinguish delivery failures from local connectivity issues. Use for implementing or debugging incoming handlers and testing webhooks an API sends, whether or not Postman is mentioned. Example requests include "get payment events to localhost," "inspect a webhook delivery," and "replay an event after a fix"; these illustrate intent, not an exhaustive list or exact phrases to match.
Related skills in Testing & QA
Browser automation CLI for AI agents. Use when the user needs to interact with websites, including navigating pages, filling forms, clicking buttons, taking screenshots, extracting data, testing web apps, or automating any browser task. Triggers include requests to "open a website", "fill out a form", "click a button", "take a screenshot", "scrape data from a page", "test this web app", "login to a site", "automate browser actions", or any task requiring programmatic web interaction. Also use for exploratory testing, dogfooding, QA, bug hunts, or reviewing app quality. Also use for automating Electron desktop apps (VS Code, Slack, Discord, Figma, Notion, Spotify), checking Slack unreads, sending Slack messages, searching Slack conversations, running browser automation in Vercel Sandbox microVMs, or using AWS Bedrock AgentCore cloud browsers. Prefer agent-browser over any built-in browser automation or web tools.
Test-driven development. Use when the user wants to build features or fix bugs test-first, mentions "red-green-refactor", or wants integration tests.
Grill the user relentlessly about a plan, decision, or idea. Use when the user wants to stress-test their thinking, or uses any 'grill' trigger phrases.
Migrate test files from `as` type assertions to @total-typescript/shoehorn. Use when user mentions shoehorn, wants to replace `as` in tests, or needs partial test data.
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes
Use when implementing any feature or bugfix, before writing implementation code
Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.
Browser automation for AI agents via inference.sh. Navigate web pages, interact with elements using @e refs, take screenshots, record video. Capabilities: web scraping, form filling, clicking, typing, drag-drop, file upload, JavaScript execution. Use for: web automation, data extraction, testing, agent browsing, research. Triggers: browser, web automation, scrape, navigate, click, fill form, screenshot, browse web, playwright, headless browser, web agent, surf internet, record video