Borrowing it
Nothing to install: this file belongs to hs737/mcp-server-for-ynab. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/hs737/mcp-server-for-ynab/master/.agents/skills/postman-standards/SKILL.mdgit clone --depth 1 https://github.com/hs737/mcp-server-for-ynabWrote 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.
[](https://agentmods.dev/skills/hs737/mcp-server-for-ynab/postman-standards)<a href="https://agentmods.dev/skills/hs737/mcp-server-for-ynab/postman-standards"><img src="https://agentmods.dev/badge/skills/hs737/mcp-server-for-ynab/postman-standards/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.
<a href="https://agentmods.dev/skills/hs737/mcp-server-for-ynab/postman-standards"><img src="https://agentmods.dev/badge/skills/hs737/mcp-server-for-ynab/postman-standards.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00028 | $0.00563 |
| Opus 5 | $0.00014 | $0.00282 |
| Sonnet 5 | $0.00006 | $0.00113 |
| Haiku 4.5 | $0.00003 | $0.00056 |
Grade A, and why
postman-standards 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 9d 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.
How it starts
The opening of the file, as written. The whole thing — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Postman standards
Scope: Use this skill only if this repo maintains Postman/Newman collections or an HTTP API. Many MCP-only Python repos do not—skip this skill if there is no postman/ or documented HTTP operator workflow.
Use when editing Postman surfaces or HTTP routes and you need collections to stay a high-quality operator and integration-testing surface.
Use when
- This repo exposes HTTP endpoints (FastAPI, etc.) with Postman collections
- Changing request or response shapes or route behavior
- Updating Postman examples, naming, variables, or tests
- Adding or updating OpenAPI- or script-generated Postman artifacts
Read first
AGENTS.md(if present)README.mdandpyproject.toml(generation scripts, if any).agents/skills/contract-sync/SKILL.md- OpenAPI or contract docs in this repo
Core rules
- Source of truth: contracts live in hand-authored Python (Pydantic models, route handlers, tests). OpenAPI and generated Postman collections are derived unless the repo documents otherwise.
- Do not hand-edit generated OpenAPI or collection JSON; regenerate using commands in
pyproject.toml,Makefile, or repo docs.
- Do not hand-edit generated OpenAPI or collection JSON; regenerate using commands in
- Variable contract (inputs equal outputs):
- Path params must use the OpenAPI parameter name as the Postman variable name.
- Post-scripts that capture ids must write to the same canonical keys the collection documents.
- Every request needs a description with:
Purpose:,Auth:,Reads:,Writes:,Assumptions:,Side Effects:,Downstream:,Notes:. - Variables:
{{baseUrl}}in environment; collection variables for workflow ids; never hardcode tokens or production ids. - Body examples: happy path, minimal payload, and a common edge case where applicable.
- Post-script tests: assert status and stable fields; avoid brittle full-body string matches on dynamic content.
Postman runtime note
Postman and Newman run JavaScript in the sandbox, not Python from this repo. Shared logic belongs in repo templates injected at generation time—not imported Python modules.
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.
- 9d ago First seen · 47 lines · 28 tokens per session scan A 5746ab7cb1e2
postman-standards is a skill published in the GitHub repository hs737/mcp-server-for-ynab (1 stars, last pushed yesterday), licensed Apache-2.0. It adds 28 tokens to every session and 563 once invoked, about $0.0001 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.
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