openapi-designer

openapi-designer is a skill for Claude Code, Codex from AtulPurohit/Antigravity-Awesome-Skills. It costs 33 tokens per session (1,101 once invoked), scanned A, original, no licence file.

A guide for designing OpenAPI 3.1 specifications, machine-readable descriptions of REST APIs.

In plain words
What is it for?
Use it to define schemas, security, examples, webhooks, and documentation generation for REST APIs.
Why use it?
It helps keep an API's endpoints, data formats, security rules, examples, and documentation consistent.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to define schemas, security, examples, webhooks, and documentation generation for REST APIs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/atulpurohit/antigravity-awesome-skills/openapi-designer
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 AtulPurohit/Antigravity-Awesome-Skills --skill openapi-designer
Clone the repo
git clone --depth 1 https://github.com/AtulPurohit/Antigravity-Awesome-Skills

Made for: Claude Code, Codex.

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 openapi-designer

README.md
[![agentmods](https://agentmods.dev/badge/skills/atulpurohit/antigravity-awesome-skills/openapi-designer/github.svg)](https://agentmods.dev/skills/atulpurohit/antigravity-awesome-skills/openapi-designer)
Your own site
<a href="https://agentmods.dev/skills/atulpurohit/antigravity-awesome-skills/openapi-designer"><img src="https://agentmods.dev/badge/skills/atulpurohit/antigravity-awesome-skills/openapi-designer/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 openapi-designer

Your own site · 80×15
<a href="https://agentmods.dev/skills/atulpurohit/antigravity-awesome-skills/openapi-designer"><img src="https://agentmods.dev/badge/skills/atulpurohit/antigravity-awesome-skills/openapi-designer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,101 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 unknown 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 $0.00033 $0.01101
Opus 5 $0.00016 $0.00550
Sonnet 5 $0.00007 $0.00220
Haiku 4.5 $0.00003 $0.00110

Measured 7d ago against content hash d5d576c419ef, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

openapi-designer 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 7d 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.

plugins/dx-qa-automation/skills/openapi-designer/SKILL.md · 202 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 7d ago First seen · 202 lines · 33 tokens per session scan A d5d576c419ef

Subscribe to this mod's changes

openapi-designer is a skill published in the GitHub repository AtulPurohit/Antigravity-Awesome-Skills (3 stars, last pushed 2mo ago), with no licence file. It adds 33 tokens to every session and 1,101 once invoked, about $0.0002 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 2026-09-03.

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