postman-newman

postman-newman is a skill for Claude Code from aks-builds/quality-skills. It costs 127 tokens per session (2,336 once invoked), scanned A, original, MIT.

A tool for creating collections of API requests and checks, plus Newman, its command-line runner. Collections can be explored in Postman's interface and run locally or in continuous integration (CI).

In plain words
What is it for?
Use it to debug APIs interactively, build shared regression collections, chain requests with scripts, and run them in CI wherever Node.js is available. It can also support scheduled or ongoing API checks through Postman monitors.
Why use it?
It keeps request sequences, environments, variables, and assertions together so teams can repeat API checks instead of testing manually. Newman makes shared collections usable in automated builds.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the quality-skills plugin — 57 skills shipped together

Good fit Use it to debug APIs interactively, build shared regression collections, chain requests with scripts, and run them in CI wherever Node.js is available. It can also support scheduled or ongoing API checks through Postman monitors.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/aks-builds/quality-skills/postman-newman
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add aks-builds/quality-skills --skill postman-newman
Clone the repo
git clone --depth 1 https://github.com/aks-builds/quality-skills

Made for: Claude Code.

Or install quality-skills, the plugin that ships this one along with the rest of its 57 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for postman-newman

README.md
[![agentmods](https://agentmods.dev/badge/skills/aks-builds/quality-skills/postman-newman/github.svg)](https://agentmods.dev/skills/aks-builds/quality-skills/postman-newman)
Your own site
<a href="https://agentmods.dev/skills/aks-builds/quality-skills/postman-newman"><img src="https://agentmods.dev/badge/skills/aks-builds/quality-skills/postman-newman/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for postman-newman

Your own site · 80×15
<a href="https://agentmods.dev/skills/aks-builds/quality-skills/postman-newman"><img src="https://agentmods.dev/badge/skills/aks-builds/quality-skills/postman-newman.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 127 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,336 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00127 $0.02336
Opus 5 $0.00063 $0.01168
Sonnet 5 $0.00025 $0.00467
Haiku 4.5 $0.00013 $0.00234

Measured 11d ago against content hash 847cb98c8e87, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

postman-newman scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/postman-newman/SKILL.md · 213 lines

How it starts

The opening of the file, as written. The whole thing — 213 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Postman + Newman

You are an expert in Postman collections and Newman (the Postman CLI runner). Your goal is to help engineers structure collections that are useful in both Postman's UI and CI, write test scripts that catch real bugs, and avoid the common Postman anti-patterns (huge unmaintained collections, untested chains, hardcoded environments). Do not fabricate pm API methods, CLI flags, or collection schema fields. When uncertain, point the reader to learning.postman.com.

Initial Assessment

Check .agents/qa-context.md (fallback: .claude/qa-context.md) before answering. Pay attention to:

  • What's the goal? — Exploratory API debugging (Postman desktop is great), shared regression suite (collection + Newman in CI), or contract testing (consider pact-contract-testing instead).
  • Team familiarity — for engineers who code daily, a language-native HTTP client (supertest, pytest-api, rest-assured) is often easier to maintain than Postman scripts. For QA teams that lean on Postman UI workflows, collections are a strong fit.
  • CI provider — Newman runs anywhere Node runs. The reporter choice (htmlextra, junit) matters for CI consumption.
  • Compliance / data handling — Postman Cloud syncs collections and environments by default. If your org forbids syncing, configure local-only workspaces or use the API directly.

If the file does not exist, ask: solo or team usage, whether collections will run in CI via Newman, languages the team is fluent in, and whether Postman Cloud sync is allowed.


When to use Postman vs. a language-native client

Use Postman + Newman when… Use a language-native client when…
QA owns the suite and prefers a GUI Engineers own the suite and write code daily
You want fast exploratory + saved collection flow You want refactoring, types, and IDE support
Auth flows are complex and you want UI assistance You need test fixtures, parametrization, parallelism
Test data and chains live well in collections Test data lives well in code/fixtures/factories
You're sharing collections with non-engineers (PMs, support) Tests are tightly coupled to the application code

Read the full file on GitHub · 213 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 213 lines · 127 tokens per session scan A 847cb98c8e87

Subscribe to this mod's changes

postman-newman is a skill published in the GitHub repository aks-builds/quality-skills (2 stars, last pushed yesterday), licensed MIT. It adds 127 tokens to every session and 2,336 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.