api-designer

api-designer is a skill for Claude Code, Codex from buiphucminhtam/forgewright. It costs 73 tokens per session (6,267 once invoked), scanned A, original, no licence file.

An API design skill for planning how software services communicate, including REST, GraphQL, gRPC, and AsyncAPI interfaces.

In plain words
What is it for?
It helps design API endpoints, write OpenAPI specifications, and plan REST, GraphQL, gRPC, or event-based services.
Why use it?
It helps define consistent endpoints, data flows, errors, limits, and version changes before implementation.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/buiphucminhtam/forgewright/api-designer
Any agent
npx skills add buiphucminhtam/forgewright --skill api-designer
Clone the repo
git clone --depth 1 https://github.com/buiphucminhtam/forgewright

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 api-designer

README.md
[![agentmods](https://agentmods.dev/badge/skills/buiphucminhtam/forgewright/api-designer.svg)](https://agentmods.dev/skills/buiphucminhtam/forgewright/api-designer)
Your own site
<a href="https://agentmods.dev/skills/buiphucminhtam/forgewright/api-designer"><img src="https://agentmods.dev/badge/skills/buiphucminhtam/forgewright/api-designer.svg" alt="Measured on agentmods" height="20"></a>
Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,267 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00073 $0.06267
Opus 5 $0.00036 $0.03134
Sonnet 5 $0.00015 $0.01253
Haiku 4.5 $0.00007 $0.00627

Measured 5d ago against content hash dfdd00672524, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

api-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 5d 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/api-designer/SKILL.md · 964 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

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. 5d ago First seen · 964 lines · 73 tokens per session scan A dfdd00672524

Subscribe to this mod's changes

api-designer is a skill published in the GitHub repository buiphucminhtam/forgewright (49 stars, last pushed yesterday), with no licence file. It adds 73 tokens to every session and 6,267 once invoked, about $0.0004 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 2026-08-30.

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