skill-120

skill-120 is a skill for Claude Code, Codex from legendtkl/agentic-skill-router. It costs 20 tokens per session (206 once invoked), scanned A, original, MIT.

An assistant for building GraphQL mutations, which are API requests that create, change, or delete data. It also covers related API design topics such as REST, OpenAPI, authentication, and Swagger.

In plain words
What is it for?
Use it to design GraphQL mutation builders, follow common API patterns, generate configurations, and validate results against standards.
Why use it?
It gives developers step-by-step guidance, code, and configuration checks for a specialized API task.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to design GraphQL mutation builders, follow common API patterns, generate configurations, and validate results against standards.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/legendtkl/agentic-skill-router/skill-120
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 legendtkl/agentic-skill-router --skill skill-120
Clone the repo
git clone --depth 1 https://github.com/legendtkl/agentic-skill-router

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 skill-120

README.md
[![agentmods](https://agentmods.dev/badge/skills/legendtkl/agentic-skill-router/skill-120/github.svg)](https://agentmods.dev/skills/legendtkl/agentic-skill-router/skill-120)
Your own site
<a href="https://agentmods.dev/skills/legendtkl/agentic-skill-router/skill-120"><img src="https://agentmods.dev/badge/skills/legendtkl/agentic-skill-router/skill-120/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 skill-120

Your own site · 80×15
<a href="https://agentmods.dev/skills/legendtkl/agentic-skill-router/skill-120"><img src="https://agentmods.dev/badge/skills/legendtkl/agentic-skill-router/skill-120.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 206 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 $0.00020 $0.00206
Opus 5 $0.00010 $0.00103
Sonnet 5 $0.00004 $0.00041
Haiku 4.5 $0.00002 $0.00021

Measured 7d ago against content hash e175c20d3fd0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

skill-120 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.

experiments/dci-compare/skillrouter-skills/skill-120/SKILL.md · 35 lines

What it actually says

Graphql Mutation Builder

Purpose

This skill provides automated assistance for graphql mutation builder tasks within the API Development domain.

When to Use

This skill activates automatically when you:

  • Mention "graphql mutation builder" in your request
  • Ask about graphql mutation builder patterns or best practices
  • Need help with api development skills covering rest, graphql, openapi, authentication, and api design patterns.

Capabilities

  • Provides step-by-step guidance for graphql mutation builder
  • Follows industry best practices and patterns
  • Generates production-ready code and configurations
  • Validates outputs against common standards

Example Triggers

  • "Help me with graphql mutation builder"
  • "Set up graphql mutation builder"
  • "How do I implement graphql mutation builder?"

Part of the API Development skill category. Tags: api, rest, graphql, openapi, swagger

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 · 35 lines · 20 tokens per session scan A e175c20d3fd0

Subscribe to this mod's changes

skill-120 is a skill published in the GitHub repository legendtkl/agentic-skill-router (5 stars, last pushed 3mo ago), licensed MIT. It adds 20 tokens to every session and 206 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 2026-09-03.

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